Turnover device and seat

Abstract

The utility model relates to the technical field of seats, and discloses a turnover device and a seat, the turnover device comprises a mounting seat, a rotating shaft, a connecting piece and a power assisting assembly; a first through hole is formed in the mounting seat; the rotating shaft is arranged in the first through hole in a penetrating manner; the connecting piece is fixed on the rotating shaft; the power assisting assembly comprises a first limiting rod, a second limiting rod, a limiting seat and a first power assisting spring, the limiting seat is fixed to the rotating shaft and provided with a first limiting wall and a second limiting wall, the rotating shaft is sleeved with the first power assisting spring, and the first power assisting spring is provided with a first acting arm and a second acting arm; according to the turnover device provided by the embodiment of the utility model, the first limiting rod, the second limiting rod, the limiting seat and the first auxiliary spring are adopted, so that a power assisting function can be achieved in the turnover process of the backrest, the external force required by upward turnover of the backrest is reduced, the operation is labor-saving, and the use convenience of the backrest is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially relates to a turnover device and seat. BACKGROUND

[0002] Under the background of today's economic development, the car has become an indispensable part of people's life. With the continuous improvement of living standards, the use of the car population is increasingly widespread, and different needs have emerged; Among them, the turnover device is important for realizing the upward unfolding and downward folding of the backrest.

[0003] However, the existing turnover device has many problems; Part of the turnover device is not equipped with power-assisted function, so that the backrest lacks power in the turnover process, resulting in the operation of the backrest upward turning being very laborious, reducing the convenience of the seat and affecting the user experience. UTILITY MODEL CONTENT

[0004] To solve at least one of the technical problems in the prior art, the utility model aims to provide a turnover device and seat, which is labor-saving and convenient to use.

[0005] In order to achieve the above purpose, the utility model provides a turnover device, which comprises a mounting seat, a rotating shaft, a connecting piece and a power-assisted assembly; The mounting seat is provided with a first through hole; The rotating shaft has a first axis, and the rotating shaft is arranged in the first through hole and can rotate around the first axis; The connecting piece is fixed to the rotating shaft and located on one side of the mounting seat; The power-assisted assembly comprises a first limiting rod, a second limiting rod, a limiting seat and a first power spring, the first limiting rod is fixed to the mounting seat and located on one side of the rotating shaft, the second limiting rod is fixed to the mounting seat and located on the side of the rotating shaft away from the first limiting rod, the limiting seat is fixed to the rotating shaft, the limiting seat has a first limiting wall and a second limiting wall, the first limiting wall and the first limiting rod are located on the same side of the rotating shaft, the second limiting wall and the second limiting rod are located on the same side of the rotating shaft, and the first power spring is sleeved on the rotating shaft, the first power spring has a first acting arm and a second acting arm; Wherein, the limiting seat has: a first position, at this time, the first acting arm abuts against the first limiting wall, and the second acting arm abuts against the second limiting rod; A second position, at this time, the first acting arm abuts against the first limiting rod, and the second acting arm abuts against the second limiting wall.

[0006] In some embodiments, the assisting assembly further comprises a second assisting spring, the second assisting spring is sleeved on the rotating shaft, the second assisting spring has a third acting arm and a fourth acting arm; when the limiting seat is in the first position, the third acting arm abuts against the first limiting wall, and the fourth acting arm abuts against the second limiting rod; when the limiting seat is in the second position, the third acting arm abuts against the first limiting rod, and the fourth acting arm abuts against the second limiting wall.

[0007] In some embodiments, the turnover device further comprises a first fastener; the rotating shaft is provided with a mounting groove, the mounting groove has opposite first and second groove walls, and the first and second groove walls are both provided with a first mounting hole; the connecting piece comprises a first connecting part and a second connecting part, the second connecting part is fixed to one end of the first connecting part, the first connecting part is arranged in the mounting groove, and the first connecting part is provided with a second mounting hole; and the first fastener is arranged through the first and second mounting holes to fix the connecting piece to the rotating shaft.

[0008] In some embodiments, the mounting seat comprises a bottom plate, a first side plate and a second side plate, the first side plate is connected to one end of the bottom plate, the second side plate is connected to an end of the bottom plate away from the first side plate and is arranged opposite to the first side plate, an accommodating groove is formed between the bottom plate, the first side plate and the second side plate, the limiting seat and the first assisting spring are arranged in the accommodating groove, two ends of the first limiting rod are connected to the first side plate and the second side plate respectively, two ends of the second limiting rod are connected to the first side plate and the second side plate respectively, and the first side plate and the second side plate are both provided with the first through hole.

[0009] In some embodiments, the limiting seat comprises a first fixing part and a limiting plate, the first fixing part is fixed to the rotating shaft, and the limiting plate is fixed to the first fixing part; the limiting plate has the first limiting wall and the second limiting wall.

[0010] In some embodiments, the turnover device further comprises a driving motor, the driving motor is connected to the rotating shaft and can drive the rotating shaft to rotate around the first axis.

[0011] The utility model also provides a seat, seat includes according to any one of above-mentioned turnover device, seat further includes backrest and seat pad, the backrest is hinged on the seat pad, and the connecting piece is fixed to the backrest.

[0012] In some embodiments, the seat further comprises a locking device, the locking device is connected to the backrest.

[0013] In some embodiments, the locking device comprises a guide rail plate, a lock base, a clamping shaft, a limiting member, an elastic member, an opening lever and a clasp; the guide rail plate is provided with a plurality of clamping slots arranged in sequence along a guide direction and uniformly spaced; the lock base is slidingly connected to the guide rail plate, and the lock base is provided with a second through hole; the clamping shaft comprises a shaft body and a limiting portion, the shaft body has opposite first and second ends, and the limiting portion is fixed to the outer wall of the shaft body; the limiting member comprises a second fixed portion and a limiting portion, the second fixed portion is fixed to the side of the lock base away from the guide rail plate, the limiting portion is fixed to one end of the second fixed portion and is spaced apart from the lock base, the limiting portion is provided with a third through hole, the first end is arranged in the second through hole and embedded in the clamping slot, the second end is arranged in the third through hole, and the limiting portion is located between the limiting portion and the lock base; the elastic member is sleeved on the shaft body, and the two ends of the elastic member are connected to the limiting portion and the limiting portion respectively; the opening lever is connected to the limiting portion and is used to drive the clamping shaft to move, so that the first end is separated from the clamping slot; one end of the clasp is fixed to the lock base, and the other end of the clasp away from the lock base is detachably connected to the backrest.

[0014] In some embodiments, the opening lever comprises a fixed seat, a fulcrum shaft and a lever member, the fixed seat is fixed to the side of the limiting member away from the lock base, and the fulcrum shaft has a second axis; the lever member comprises a resistance arm, a third connecting portion and a power arm, the resistance arm is connected to the clamping shaft and located between the limiting portion and the lock base, the third connecting portion is fixed to one end of the resistance arm away from the clamping shaft, and the power arm is fixed to one end of the third connecting portion away from the resistance arm; the third connecting portion is rotatably connected to the fixed seat through the fulcrum shaft, so that the lever member can rotate around the second axis.

[0015] The utility model discloses a kind of turnover device compared with prior art, its beneficial effect is at: by adopting first limit rod, second limit rod, limit seat and first power-assisted spring, since limit seat is fixed in pivot, therefore the rotation of pivot can drive limit seat rotation, so that the abutment position of first action arm and second action arm can be changed by the rotation of limit seat, further can realize the storage and release of the elastic potential of first power-assisted spring, to play power-assisted function by power-assisted assembly in the turnover process of backrest, reduce the external force required when backrest is turned up, it is labor-saving to operate, improve the use convenience of backrest;Since first limit rod and second limit rod are respectively located at the two sides of pivot, first limit rod and first limit wall are arranged on the same side, and second limit rod and second limit wall are arranged on the same side, therefore power-assisted assembly not only can play power-assisted function in the upward turning process of backrest, but also can play buffering effect in the downward turning process of backrest, slow down the speed when backrest is lowered to improve the manipulability when backrest is turned down, so that backrest is more stable in the turnover process, improve safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of a kind of turnover device provided by the utility model embodiment;

[0017] Figure 2 It is the top view of a kind of turnover device provided by the utility model embodiment;

[0018] Figure 3 It is the side view of a kind of turnover device provided by the utility model embodiment;

[0019] Figure 4 It is the explosion view of a kind of turnover device provided by the utility model embodiment;

[0020] Figure 5 It is the structure schematic view of mounting seat provided by the utility model embodiment;

[0021] Figure 6 It is the structure schematic view of pivot provided by the utility model embodiment;

[0022] Figure 7 It is the structure schematic view of limit seat provided by the utility model embodiment;

[0023] Figure 8 It is the structure schematic view of seat provided by the utility model embodiment;

[0024] Figure 9 It is the first structure schematic view of locking device provided by the utility model embodiment;

[0025] Figure 10 It is the top view of locking device provided by the utility model embodiment;

[0026] Figure 11 Figure 2 is a second structural schematic view of the locking device provided by the embodiment of the present application;

[0027] Figure 12 Figure 3 is an exploded view of the locking device provided by the embodiment of the present application;

[0028] Figure 13 Figure 4 is a structural schematic view of the lever provided by the embodiment of the present application.

[0029] In the figure, 100, turnover device;

[0030] 1, mounting seat; 11, bottom plate; 12, first side plate; 13, second side plate; 14, accommodating groove; 15, first through hole;

[0031] 2, rotating shaft; 21, mounting groove; 211, first groove wall; 212, second groove wall; 213, first mounting hole;

[0032] 3, connecting piece; 31, first connecting part; 32, second connecting part; 311, second mounting hole; 321, third mounting hole;

[0033] 4, power assisting assembly; 41, first limiting rod; 42, second limiting rod; 43, limiting seat; 44, first power assisting spring; 45, second power assisting spring; 46, shaft sleeve; 431, first fixed part; 432, limiting plate; 4321, first limiting wall; 4322, second limiting wall; 441, first acting arm; 442, second acting arm; 451, third acting arm; 452, fourth acting arm;

[0034] 5, first fastener;

[0035] 6, driving motor;

[0036] 200, locking device;

[0037] 201, guide rail plate; 2011, clamping groove;

[0038] 202, lock catch base; 2021, second through hole;

[0039] 203, clamping shaft; 2031, shaft main body; 2032, limiting part; 20311, first end; 20312, second end;

[0040] 204, limiting piece; 2041, second fixed part; 2042, limiting part; 20421, third through hole;

[0041] 205, elastic piece;

[0042] 206, opening lever; 2061, fixed seat; 2062, fulcrum shaft; 2063, lever piece; 20631, resistance arm; 20632, third connecting part; 20633, power arm;

[0043] 207, buckle ring;

[0044] 300, backrest;

[0045] 400, seat cushion. DETAILED DESCRIPTION

[0046] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0047] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on 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 therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0049] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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 internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise", "have" and "include" or any variation thereof, is intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises, has or includes a list of elements is not necessarily limited to the elements in the list.

[0052] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another.

[0053] As Figures 1-7 The utility model discloses an embodiment preferably a turnover device 100, including mounting seat 1, pivot 2, connecting piece 3 and power assisting component 4.

[0054] Mounting seat 1 is set up with first through hole 15;Pivot 2 has first axis, pivot 2 is threaded in first through hole 15 and can rotate around first axis;Connecting piece 3 is fixed to pivot 2 and is located one side of mounting seat 1;Power assisting component 4 includes first limit rod 41, second limit rod 42, limit seat 43 and first power assisting spring 44, first limit rod 41 is fixed to mounting seat 1 and is located one side of pivot 2, second limit rod 42 is fixed to mounting seat 1 and is located one side of pivot 2 away from first limit rod 41, limit seat 43 is fixed to pivot 2, limit seat 43 has first limit wall 4321 and second limit wall 4322, first limit wall 4321 and first limit rod 41 are located the same side of pivot 2, second limit wall 4322 and second limit rod 42 are located the same side of pivot 2, first power assisting spring 44 is sleeved on pivot 2, and first power assisting spring 44 has first action arm 441 and second action arm 442.

[0055] The limiting seat 43 has a first position, in which the first action arm 441 abuts against the first limiting wall 4321, and the second action arm 442 abuts against the second limiting rod 42; and a second position, in which the first action arm 441 abuts against the first limiting rod 41, and the second action arm 442 abuts against the second limiting wall 4322.

[0056] Based on the technical scheme, the first limiting rod 41, the second limiting rod 42, the limiting seat 43 and the first power-assisted spring 44 are adopted. Since the limiting seat 43 is fixed to the rotating shaft 2, the rotation of the rotating shaft 2 drives the limiting seat 43 to rotate, so that the abutting positions of the first action arm 441 and the second action arm 442 can be changed through the rotation of the limiting seat 43, and the elastic potential energy of the first power-assisted spring 44 can be stored and released, so that the power-assisted assembly 4 can play a power-assisted function in the overturning process of the backrest 300, the required external force in the upward overturning of the backrest 300 is reduced, the operation is labor-saving, and the use convenience of the backrest 300 is improved. Since the first limiting rod 41 and the second limiting rod 42 are respectively located on the two sides of the rotating shaft 2, the first limiting rod 41 and the first limiting wall 4321 are arranged on the same side, and the second limiting rod 42 and the second limiting wall 4322 are arranged on the same side, the power-assisted assembly 4 not only can play a power-assisted function in the upward overturning of the backrest 300, but also can play a buffering function in the downward overturning of the backrest 300, so as to slow down the speed of the backrest 300 in the downward overturning to improve the maneuverability of the backrest 300 in the downward overturning, and make the backrest 300 more stable in the overturning process, and improve the safety.

[0057] The first axis is the central axis of the rotating shaft 2.

[0058] In the embodiment, the first power-assisted spring 44 is a torsion spring.

[0059] In other embodiments, the first power-assisted spring 44 can also be a tensile spring, a compression spring or any spring capable of playing a power-assisted function in the overturning process of the seat through the storage and release of elastic potential energy, which is not limited herein.

[0060] The power-assisted assembly 4 further comprises a second power-assisted spring 45, which is sleeved on the rotating shaft 2, and has a third action arm 451 and a fourth action arm 452. When the limiting seat 43 is in the first position, the third action arm 451 abuts against the first limiting wall 4321, and the fourth action arm 452 abuts against the second supporting rod. When the limiting seat 43 is in the second position, the third action arm 451 abuts against the first limiting rod 41, and the fourth action arm 452 abuts against the second limiting wall 4322.

[0061] The abutting position of the third action arm 451 and the fourth action arm 452 is changed by rotating the limiting seat 43, so that the elastic potential energy of the second assisting spring 45 is stored and released, and the assisting assembly 4 can play a greater assisting function in the process of turning the seat, further reducing the external force required when the backrest 300 is turned upward, and further improving the use convenience of the backrest 300.

[0062] In the embodiment, the second assisting spring 45 is a torsion spring.

[0063] In other embodiments, the second assisting spring 45 can also be a tensile spring, a compression spring, or any spring capable of storing and releasing elastic potential energy to play an assisting role in the process of turning the seat, which is not limited here.

[0064] In the embodiment, the elastic coefficients of the first assisting spring 44 and the second assisting spring 45 are different.

[0065] In other embodiments, the elastic coefficients of the first assisting spring 44 and the second assisting spring 45 can also be the same.

[0066] In the embodiment, the first assisting spring 44 is a large spring, and the second assisting spring 45 is a small spring, which is arranged between the first assisting spring 44 and the rotating shaft.

[0067] In the embodiment, the assisting assembly 4 further comprises a shaft sleeve 46, which is arranged between the second assisting spring 45 and the rotating shaft 2.

[0068] The turning device 100 further comprises a first fastener 5.

[0069] The rotating shaft 2 is provided with a mounting groove 21 having opposite first and second groove walls 211 and 212, and the first and second groove walls 211 and 212 are both provided with a first mounting hole 213; the connecting piece 3 comprises a first connecting part 31 and a second connecting part 32, the second connecting part 32 is fixed to one end of the first connecting part 31, the first connecting part 31 is arranged in the mounting groove 21, and the first connecting part 31 is provided with a second mounting hole 311; the first fastener 5 is arranged in the first mounting hole 213 and the second mounting hole 311 to fix the connecting piece 3 to the rotating shaft 2.

[0070] The first fastener 5 is arranged to make the installation process simple and efficient. During installation, the first connecting part 31 is placed into the installation groove 21, the first fastener 5 is inserted through the first mounting hole 213 and the second mounting hole 311, and the installation is completed. This method greatly shortens the installation time, improves the installation efficiency, and reduces the installation cost. At the same time, through the cooperation of the first connecting part 31 and the installation groove 21, and the fastening effect of the first fastener 5, the connecting piece 3 can withstand a larger external force, ensuring the reliability of the seat during the overturning process.

[0071] The overturning device 100 further comprises a second fastener (not shown), and the second connecting part 32 is provided with a third mounting hole 321. The second fastener passes through the third mounting hole to fix the connecting piece 3 to the backrest 300.

[0072] The mounting seat 1 comprises a bottom plate 11, a first side plate 12 and a second side plate 13. The first side plate 12 is connected to one end of the bottom plate 11, and the second side plate 13 is connected to the end of the bottom plate 11 away from the first side plate 12 and is arranged opposite to the first side plate 12. The bottom plate 11, the first side plate 12 and the second side plate 13 form an accommodation groove 14 therebetween. The limiting seat 43 and the first assisting spring 44 are arranged in the accommodation groove 14. The two ends of the first limiting rod 41 are respectively connected to the first side plate 12 and the second side plate 13. The two ends of the second limiting rod 42 are respectively connected to the first side plate 12 and the second side plate 13. The first side plate 12 and the second side plate 13 are both provided with a first through hole 15.

[0073] The accommodation groove 14 accommodates the limiting seat 43 and the first assisting spring 44, which not only effectively utilizes the space, but also avoids the interference of the assisting assembly 4 with other components. This arrangement enables the backrest 300 overturning device 100 to realize more functions in a limited space, improving the space utilization.

[0074] The limiting seat 43 comprises a first fixing part 431 and a limiting plate 432. The first fixing part 431 is fixed to the rotating shaft 2, and the limiting plate 432 is fixed to the first fixing part 431. The limiting plate 432 has a first limiting wall 4321 and a second limiting wall 4322.

[0075] In this embodiment, the limiting plate 432 is a circular arc limiting plate 432.

[0076] The first fixing part 431 is provided with a square hole through which the rotating shaft 2 passes and which is adapted to the square mounting part of the rotating shaft 2. The first fixing part 431 is sleeved on the rotating shaft 2 through the square hole and rotates with the rotating shaft 2.

[0077] The overturning device 100 further comprises a driving motor 6, which is connected to the rotating shaft 2 and can drive the rotating shaft 2 to rotate around the first axis.

[0078] The backrest 300 can be automatically turned over through the driving motor 6, and the backrest 300 is convenient to use; the first assisting spring 44 can play an assisting function in the turning-over process of the seat body to reduce the external force required for turning over the backrest 300, so that the driving motor 6 with smaller output power and smaller size can be used to realize the automatic turning over of the backrest 300.

[0079] The utility model also provides a seat, the seat includes the turning-over device 100 according to any one of the above, still include backrest 300 and seat cushion 400, backrest 300 is hinged on seat cushion 400, connecting piece 3 is fixed in backrest 300.

[0080] The seat further comprises a locking device 200 connected to the backrest 300, and the locking device 200 is used to lock and fix the backrest 300 at a preset angle.

[0081] The end of the locking device 200 away from the backrest 300 is used to be connected to a fixed position (such as a fixed position of a vehicle body, etc.).

[0082] When the turning-over device 100 unfolds the seat to a preset position, the backrest 300 can be locked and fixed by the locking device 200 to limit the movement of the backrest 300, so as to limit the backrest 300 at a preset angle, and make the backrest 300 of the seat better adapt to the needs of different users; no matter in a resting, working or relaxing state, the user can adjust the angle of the backrest 300 through the turning-over device 100 according to his own comfort, and then lock and fix the backrest 300 through the locking device 200, so that the user can effectively relieve fatigue at the comfortable angle of the backrest 300 and improve the riding experience.

[0083] The locking device 200 comprises a guide rail plate 201, a lock catch base 202, a clamping shaft 203, a limiting piece 204, an elastic piece 205, an opening lever 206 and a clasp 207.

[0084] The guide rail plate 201 is provided with a plurality of clamping grooves 2011 arranged in sequence along the guide direction and uniformly spaced.

[0085] The lock catch base 202 is slidably connected to the guide rail plate 201, and the lock catch base 202 is provided with a second through hole 2021.

[0086] The clamping shaft 203 comprises a shaft body 2031 and a limiting portion 2032, the shaft body 2031 has opposite first and second ends 20311 and 20312, and the limiting portion 2032 is fixed to the outer wall of the shaft body 2031.

[0087] The limiting member 204 comprises a second fixing portion 2041 and a limiting portion 2042. The second fixing portion 2041 is fixed to the side of the lock base 202 away from the guide plate 201. The limiting portion 2042 is fixed to one end of the second fixing portion 2041 and is arranged in a spaced manner with the lock base 202. The limiting portion 2042 is provided with a third through hole 20421. The first end 20311 is arranged through the second through hole 2021 and is embedded into the clamping groove 2011. The second end 20312 is arranged through the third through hole 20421. The limiting portion 2032 is located between the limiting portion 2042 and the lock base 202.

[0088] The elastic member 205 is sleeved on the shaft body 2031. The two ends of the elastic member 205 are connected with the limiting portion 2032 and the limiting portion 2042 respectively.

[0089] The opening lever 206 is connected with the limiting portion 2032 and is used to drive the clamping shaft 203 to move, so that the first end 20311 is separated from the clamping groove 2011. One end of the buckle 207 is fixed to the lock base 202. The end of the buckle 207 away from the lock base 202 is detachably connected with the backrest 300.

[0090] In this way, when it is needed to lock and fix the backrest 300 at a preset angle by the locking device 200, the backrest 300 can be first driven to rotate around the first axis by the turnover device 100 to rotate the backrest 300 to the preset angle. Then, the clamping shaft 203 is driven to move by the opening lever 206, so that the first end 20311 is separated from the clamping groove 2011, so that the lock base 202 can slide along the guide plate 201. When the lock base 202 slides along the guide plate 201 to the preset locking position corresponding to the preset angle, the buckle 207 is connected to the backrest 300 and the driving of the clamping member by the opening lever 206 is stopped. One clamping shaft 203 is inserted into one clamping groove 2011 in alignment with the clamping shaft 203 under the elastic force of the elastic member 205 sleeved on the clamping shaft 203, so as to limit the lock base 202 at the fixed position of the guide plate 201, fix the angle of the backrest 300 relative to the seat cushion 400, and realize the locking and fixing of the backrest 300 at the preset angle. When it is needed to fold the backrest 300 by the turnover device 100, the buckle 207 can be detached from the backrest 300 to make the locking device 200 separate from the backrest 300. Then, the backrest 300 is folded by the turnover device 100.

[0091] The opening lever 206 comprises a fixed seat 2061, a fulcrum shaft 2062 and a lever piece 2063, the fixed seat 2061 is fixed to the side of the limiting piece 204 away from the lock base 202, the fulcrum shaft 2062 has a second axis; the lever piece 2063 comprises a resistance arm 20631, a third connecting part 20632 and a power arm 20633, the resistance arm 20631 is connected to the clamping shaft 203 and located between the limiting part 2032 and the lock base 202, the third connecting part 20632 is fixed to the end of the resistance arm 20631 away from the clamping shaft 203, the power arm 20633 is fixed to the end of the third connecting part 20632 away from the resistance arm 20631; the third connecting part 20632 is rotatably connected to the fixed seat 2061 through the fulcrum shaft 2062, so that the lever piece 2063 can rotate around the second axis.

[0092] The second axis is the central axis of the fulcrum shaft 2062.

[0093] The above only is the preferred implementation of the present application, it should be pointed out, for the ordinary skilled person in the art, without departing from the technical principles of the present application, on the premise of, can make a number of improvements and substitutions, these improvements and substitutions also should be considered as the protection scope of the present application.

Claims

1. A flipping device, characterized in that, include: Mounting base (1), wherein the mounting base (1) is provided with a first through hole (15); A rotating shaft (2) having a first axis, the rotating shaft (2) passing through the first through hole (15) and being able to rotate around the first axis; A connector (3) is fixed to the rotating shaft (2) and located on one side of the mounting base (1); The assist component (4) includes a first limiting rod (41), a second limiting rod (42), a limiting seat (43), and a first assist spring (44). The first limiting rod (41) is fixed to the mounting base (1) and located on one side of the rotating shaft (2). The second limiting rod (42) is fixed to the mounting base (1) and located on the side of the rotating shaft (2) away from the first limiting rod (41). The limiting seat (43) is fixed to the rotating shaft (2). The seat (43) has a first limiting wall (4321) and a second limiting wall (4322). The first limiting wall (4321) and the first limiting rod (41) are located on the same side of the rotating shaft (2). The second limiting wall (4322) and the second limiting rod (42) are located on the same side of the rotating shaft (2). The first assist spring (44) is sleeved on the rotating shaft (2). The first assist spring (44) has a first action arm (441) and a second action arm (442). The limiting seat (43) has the following features: In the first position, the first actuating arm (441) abuts against the first limiting wall (4321), and the second actuating arm (442) abuts against the second limiting rod (42). In the second position, the first actuating arm (441) abuts against the first limiting rod (41), and the second actuating arm (442) abuts against the second limiting wall (4322).

2. The flipping device according to claim 1, characterized in that, The assist component (4) further includes a second assist spring (45), which is sleeved on the rotating shaft (2). The second assist spring (45) has a third action arm (451) and a fourth action arm (452). When the limiting seat (43) is in the first position, the third actuating arm (451) abuts against the first limiting wall (4321), and the fourth actuating arm (452) abuts against the second limiting rod (42); when the limiting seat (43) is in the second position, the third actuating arm (451) abuts against the first limiting rod (41), and the fourth actuating arm (452) abuts against the second limiting wall (4322).

3. The flipping device according to claim 1, characterized in that, It also includes the first fastener (5); The rotating shaft (2) is provided with a mounting groove (21), the mounting groove (21) has a first groove wall (211) and a second groove wall (212) opposite to each other, and both the first groove wall (211) and the second groove wall (212) are provided with a first mounting hole (213); The connector (3) includes a first connecting part (31) and a second connecting part (32). The second connecting part (32) is fixed to one end of the first connecting part (31). The first connecting part (31) is disposed in the mounting groove (21). The first connecting part (31) has a second mounting hole (311). The first fastener (5) passes through the first mounting hole (213) and the second mounting hole (311) to fix the connector (3) to the shaft (2).

4. The flipping device according to claim 1, characterized in that, The mounting base (1) includes a base plate (11), a first side plate (12), and a second side plate (13). The first side plate (12) is connected to one end of the base plate (11), and the second side plate (13) is connected to the end of the base plate (11) away from the first side plate (12) and is disposed opposite to the first side plate (12). A receiving groove (14) is formed between the base plate (11), the first side plate (12), and the second side plate (13). The limiting seat (43) and the first assist spring (44) are both disposed in the receiving groove (14). The two ends of the first limiting rod (41) are respectively connected to the first side plate (12) and the second side plate (13), and the two ends of the second limiting rod (42) are respectively connected to the first side plate (12) and the second side plate (13). The first side plate (12) and the second side plate (13) are both provided with the first through hole (15).

5. The flipping device according to claim 1, characterized in that, The limiting seat (43) includes a first fixing part (431) and a limiting plate (432). The first fixing part (431) is fixed to the rotating shaft (2), and the limiting plate (432) is fixed to the first fixing part (431). The limiting plate (432) has a first limiting wall (4321) and a second limiting wall (4322).

6. The flipping device according to any one of claims 1-5, characterized in that, It also includes a drive motor (6), which is connected to the rotating shaft (2) and can drive the rotating shaft (2) to rotate around the first axis.

7. A type of seat, characterized in that, The device includes a flipping device (100) according to any one of claims 1-6, and further includes a backrest (300) and a seat cushion (400), wherein the backrest (300) is hinged to the seat cushion (400), and the connector (3) is fixed to the backrest (300).

8. The seat according to claim 7, characterized in that, It also includes a locking device (200) connected to the backrest (300).

9. The seat according to claim 8, characterized in that, The locking device (200) includes a guide rail plate (201), a locking base (202), a snap-fit ​​shaft (203), a limiting member (204), an elastic member (205), an opening lever (206), and a buckle (207); The guide rail plate (201) has multiple slots (2011) arranged sequentially and evenly spaced along the guide direction; The locking base (202) is slidably connected to the guide rail plate (201), and the locking base (202) has a second through hole (2021); The snap-fit ​​shaft (203) includes a shaft body (2031) and a limiting part (2032). The shaft body (2031) has a first end (20311) and a second end (20312) opposite to each other. The limiting part (2032) is fixed to the outer wall of the shaft body (2031). The limiting member (204) includes a second fixing part (2041) and a limiting part (2042). The second fixing part (2041) is fixed to the side of the locking base (202) away from the guide rail plate (201). The limiting part (2042) is fixed to one end of the second fixing part (2041) and spaced apart from the locking base (202). The limiting part (2042) has a third through hole (20421). The first end (20311) passes through the second through hole (2021) and is embedded in the slot (2011). The second end (20312) passes through the third through hole (20421). The limiting part (2032) is located between the limiting part (2042) and the locking base (202). The elastic element (205) is sleeved on the shaft body (2031), and the two ends of the elastic element (205) are respectively connected to the limiting part (2032) and the restricting part (2042); The opening lever (206) is connected to the limiting part (2032) and is used to drive the snap-fit ​​shaft (203) to move so that the first end (20311) disengages from the snap-fit ​​groove (2011); One end of the buckle (207) is fixed to the latch base (202), and the end of the buckle (207) away from the latch base (202) is detachably connected to the backrest (300).

10. The seat according to claim 9, characterized in that, The opening lever (206) includes a fixed seat (2061), a fulcrum shaft (2062), and a lever member (2063). The fixed seat (2061) is fixed to the side of the limiting member (204) away from the locking base (202). The fulcrum shaft (2062) has a second axis. The lever (2063) includes a resistance arm (20631), a third connecting part (20632), and a power arm (20633). The resistance arm (20631) is connected to the snap-fit ​​shaft (203) and located between the limiting part (2032) and the locking base (202). The third connecting part (20632) is fixed to the end of the resistance arm (20631) away from the snap-fit ​​shaft (203). The power arm (20633) is fixed to the end of the third connecting part (20632) away from the resistance arm (20631). The third connecting part (20632) is rotatably connected to the fixed base (2061) through the fulcrum shaft (2062) so that the lever (2063) can rotate around the second axis.

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