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 piece, a rotating shaft, a connecting piece and a power assisting mechanism; the mounting piece is provided with a through hole; the rotating shaft is arranged in the through hole in a penetrating manner; the connecting piece is connected to the rotating shaft; the power-assisted mechanism comprises a power-assisted spring and a limiting piece; the spring body is provided with a through center hole, the rotating shaft penetrates through the center hole, the limiting piece is fixedly connected to the outer wall of the rotating shaft and located in the center hole, and the limiting piece is connected with the installation piece and the auxiliary spring. According to the turnover device provided by the utility model, through the auxiliary spring and the limiting piece, the auxiliary effect can be achieved when the seat backrest is turned upwards, the operation is labor-saving and simple, the buffering effect can be achieved when the seat backrest is turned downwards, the descending speed of the seat backrest is slowed down, and the service life of internal parts of the seat backrest can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a flipping device and a seat. Background Art

[0002] At present, consumers have higher and higher requirements for the space of automobiles. They hope that automobile seats can not only meet the riding requirements, but also have the function of folding and flipping to increase the interior space of the vehicle. Since the seat backrest is relatively heavy as a whole, it is laborious to flip the seat backrest through the flipping device. Especially for the elderly and children, it is difficult to operate. When the seat backrest is laid flat backward or forward, the speed is relatively fast, which is likely to affect the service life of the internal parts of the seat backrest. Summary of the Utility Model

[0003] Aiming at least to solve one of the technical problems existing in the prior art, the utility model aims to provide a flipping device and a seat with the flipping device. The flipping device is labor-saving and simple to operate, can slow down the speed when the seat backrest descends, and helps to extend the service life of the internal parts of the seat backrest.

[0004] To achieve the above object, the utility model provides a flipping device, which comprises a mounting member, a rotating shaft, a connecting member and an assisting mechanism. The mounting member has a through hole. The rotating shaft passes through the through hole. The connecting member is fixedly connected to the rotating shaft and is located on one side of the mounting member. The connecting member is used for connecting the seat backrest. The assisting mechanism comprises an assisting spring and a limiting member. The spring body has a through central hole. The rotating shaft passes through the central hole. The limiting member is fixedly connected to the outer wall of the rotating shaft and passes through the central hole. The limiting member is respectively connected to the mounting member and the assisting spring.

[0005] In some embodiments, the mounting member includes a mounting base, a first support rod, and a second support rod. The mounting base has the through hole. The first support rod is connected to the mounting base, and the second support rod is connected to the mounting base. The boosting spring includes a spring body, a first support arm, and a second support arm. The spring body has a through central hole. The first support arm is fixedly connected to one end of the spring body, and the second support arm is fixedly connected to the end of the spring body away from the first support arm. The first support rod passes through the central hole, and the second support rod passes through the central hole. The limiting member passes through the central hole and is located between the first support arm and the second support arm. The limiting member has a first limiting wall and a second limiting wall. The first limiting wall and the first support rod are on the same side of the first support arm, and the second limiting wall and the second support rod are on the same side of the second support arm. Wherein, the limiting member has: a first position, at this time the first support arm abuts against the first limiting wall, and the second support arm abuts against the second support rod; a second position, at this time the first support arm abuts against the first support rod, and the second support arm abuts against the second limiting wall.

[0006] In some embodiments, the mounting base includes a first side plate, a bottom plate, and a second side plate. The first side plate is connected to one end of the bottom plate, and the second side plate is connected to the end of the bottom plate away from the first side plate and is disposed opposite to the first side plate. Both the first side plate and the second side plate have the through hole. An installation groove is formed between the first side plate, the bottom plate, and the second side plate, and the boosting mechanism is disposed in the installation groove.

[0007] In some embodiments, the two ends of the first support rod are respectively connected to the first side plate and the second side plate, and the two ends of the second support rod are respectively connected to the first side plate and the second side plate.

[0008] In some embodiments, the flipping device further includes a driving motor, and the driving motor is connected to the rotating shaft and can drive the rotating shaft to rotate around the first axis.

[0009] In some embodiments, the rotating shaft includes a shaft body and an abutting portion. The abutting portion is fixedly connected to the outer wall of the shaft body. The abutting portion has an abutting wall. The shaft body passes through the through hole, and the limiting member is fixedly connected to the outer wall of the shaft body. The driving motor has an output shaft, and a driving hole is formed in the output shaft. The shaft body passes through the driving hole, and the abutting portion is disposed in the driving hole. Wherein, when the driving motor drives the output shaft to rotate around the first axis, the hole wall of the driving hole can abut against the abutting wall and drive the rotating shaft to rotate around the first axis, or there is a gap between the hole wall of the driving hole and the outer wall of the rotating shaft.

[0010] In some embodiments, the abutting wall includes a first abutting surface, a first connecting surface, and a second abutting surface that are sequentially connected in a first direction; the hole wall of the driving hole includes a driving surface; the driving motor drives the output shaft to rotate around the first axis, and can switch the output shaft between a first state, a second state, and a third state; wherein, when the output shaft is in the first state, the driving surface abuts against the first abutting surface and can drive the rotating shaft to rotate around the first axis in the first direction; when the output shaft is in the second state, there is a gap between the hole wall of the driving hole and the outer wall of the rotating shaft; when the output shaft is in the third state, the driving surface abuts against the second abutting surface and can drive the rotating shaft to rotate around the first axis in the second direction, and the second direction is opposite to the first direction.

[0011] In some embodiments, the driving surface has a planar structure, the first abutting surface has a planar structure, the first connecting surface has an arc-shaped surface structure, and the second abutting surface has a planar structure.

[0012] In some embodiments, the number of the abutting walls is multiple, and the multiple abutting walls are distributed at intervals around the first axis and in the first direction, and the number of the abutting walls is equal to the number of the driving surfaces; the abutting portion further has an avoiding wall for avoiding the hole wall of the driving hole; along the first direction, adjacent two abutting walls are connected by the avoiding wall.

[0013] The present utility model further provides a seat, and the seat includes the flipping device according to any one of the above.

[0014] Compared with the prior art, a flipping device in an embodiment of the present utility model has the following beneficial effects: (1) When the seat back is flipped upward, the assisting spring can be gradually stretched and release elastic potential energy, and the elastic potential energy can help the rotating shaft to rotate through the limiting member to offset part of the gravitational potential energy when the seat back is flipped upward, so that the strength of the user to flip the seat can be reduced to play an assisting role, and the operation is labor-saving and simple; when the seat back is flipped downward, the limiting member can be driven to rotate by the rotating shaft and the assisting spring can be gradually compressed, so as to convert part of the gravitational potential energy when the seat back is flipped downward into the elastic potential energy of the assisting spring, thereby being able to slow down the descending speed of the seat back to improve the maneuverability when the seat back is flipped, and being helpful for extending the service life of the internal parts of the seat back.

[0015] (2) By passing the limiting member through the central hole of the assisting spring, at least part of the limiting member can be located in the central hole, so that the installation space required by the assisting mechanism can be reduced, and the structure is compact. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a flipping device valve provided by an embodiment of the present utility model;

[0017] Figure 2 It is a top view of a flipping device provided by an embodiment of the present utility model;

[0018] Figure 3 It is an exploded view of a flipping device provided by an embodiment of the present utility model;

[0019] Figure 4 It is a side sectional view of a flipping device provided by an embodiment of the present utility model;

[0020] Figure 5 It is a schematic structural diagram of a mounting member provided by an embodiment of the present utility model;

[0021] Figure 6 It is a schematic structural diagram of a rotating shaft and a limiting member provided by an embodiment of the present utility model;

[0022] Figure 7 It is a side sectional view of a driving motor and a rotating shaft provided by an embodiment of the present utility model;

[0023] Figure 8 It is a side view of a driving motor provided by an embodiment of the present utility model;

[0024] Figure 9 It is a schematic diagram of the cooperation between an output shaft and a rotating shaft in a first state provided by an embodiment of the present utility model;

[0025] Figure 10 It is a schematic diagram of the cooperation between an output shaft and a rotating shaft in a second state provided by an embodiment of the present utility model;

[0026] Figure 11 It is a schematic diagram of the cooperation between an output shaft and a rotating shaft in a third state provided by an embodiment of the present utility model.

[0027] In the figure, 1 is a mounting member; 11 is a mounting base; 12 is a first support rod; 13 is a second support rod; 14 is a third support rod; 110 is a mounting groove; 111 is a first side plate; 112 is a bottom plate; 113 is a second side plate; 1111 is a through hole;

[0028] 2 is a rotating shaft; 20 is a first axis; 21 is a shaft main body; 22 is an abutting portion; 211 is a first shaft body; 212 is a second shaft body; 213 is a third shaft body; 214 is a fourth shaft body; 221 is an abutting wall; 222 is an avoiding wall; 2211 is a first abutting surface; 2212 is a first connecting surface; 2213 is a second abutting surface; 2221 is a second connecting surface; 2222 is an avoiding surface; 2223 is a third connecting surface; 22211 is an avoiding groove;

[0029] 3 is a connecting member;

[0030] 4. Boosting mechanism; 41. Boosting spring; 42. Limiting member; 411. Spring body; 412. First support arm; 413. Second support arm; 421. First limiting wall; 422. Second limiting wall; 4111. Central hole;

[0031] 5. Driving motor; 51. Output shaft; 511. Driving hole; 5111. Driving surface; 5112. Arc transition surface;

[0032] S. First direction; N. Second direction. Specific embodiments

[0033] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0036] In the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0039] Referring to "embodiments" in this application means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0040] As Figures 1 - 4 shown, a preferred flipping device in an embodiment of the present utility model includes a mounting member 1, a rotating shaft 2, a connecting member 3 and an assisting mechanism 4.

[0041] The mounting member 1 has a through hole 1111; the rotating shaft 2 is passed through the through hole 1111; the connecting member 3 is fixedly connected to the rotating shaft 2 and is located on one side of the mounting member 1, and the connecting member 3 is used for connecting a seat backrest; the assisting mechanism 4 includes an assisting spring 41 and a limiting member 42; the spring body 411 has a through central hole 4111, the rotating shaft 2 is passed through the central hole 4111, the limiting member 42 is fixedly connected to the outer wall of the rotating shaft 2 and is passed through the central hole 4111, and the limiting member 42 is respectively connected to the mounting member 1 and the assisting spring 41.

[0042] Based on this technical solution, when the seat back is turned upward, the assist spring 41 can gradually stretch and release elastic potential energy. The elastic potential energy can help the rotating shaft 2 rotate through the limiting member 42 to offset part of the gravitational potential energy when the seat back is turned upward, thereby reducing the force required for the user to turn the seat back to play an assisting role, and the operation is labor-saving and simple; when the seat back is turned downward, the rotating shaft 2 can drive the limiting member 42 to rotate and make the limiting member 42 gradually compress the assist spring 41, so as to convert part of the gravitational potential energy of the seat back when it is turned downward into the elastic potential energy of the assist spring 41, thereby being able to slow down the speed when the seat back descends to improve the maneuverability when the seat back is turned, and helping to extend the service life of the internal parts of the seat back.

[0043] By passing the limiting member 42 through the central hole 4111 of the assist spring 41, at least part of the limiting member 42 can be located within the central hole 4111, which can reduce the installation space required for the assist mechanism 4 and the structure is compact.

[0044] In this embodiment, the limiting member 42 is integrally formed on the outer wall of the rotating shaft 2.

[0045] In some other embodiments, the limiting member 42 can also be fixedly connected to the outer wall of the rotating shaft 2 by means of welding, screw connection, etc., which is not limited herein.

[0046] The first axis 20 is the central axis of the rotating shaft 2.

[0047] Refer to Figures 1 - 6 , the mounting member 1 provided by the embodiment of the present invention includes a mounting base 11, a first support rod 12 and a second support rod 13. The mounting base 11 has a through hole 1111. The first support rod 12 is connected to the mounting base 11 and passes through the central hole 4111, and the second support rod 13 is connected to the mounting base 11 and passes through the central hole 4111.

[0048] The mounting base 11 includes a first side plate 111, a bottom plate 112 and a second side plate 113. The first side plate 111 is connected to one end of the bottom plate 112. The second side plate 113 is connected to the end of the bottom plate 112 far from the first side plate 111 and is disposed opposite to the first side plate 111. Both the first side plate 111 and the second side plate 113 have through holes 1111; an installation groove 110 is formed between the first side plate 111, the bottom plate 112 and the second side plate 113, and the assist mechanism 4 is disposed in the installation groove 110. By disposing the assist mechanism 4 in the installation groove 110, the total installation space required for the mounting member 1 and the assist mechanism 4 can be reduced, and the structure is compact.

[0049] Both ends of the first support rod 12 are respectively connected to the first side plate 111 and the second side plate 113, and both ends of the second support rod 13 are respectively connected to the first side plate 111 and the second side plate 113. In this way, it is convenient for the assembly among the support rod, the mounting seat 11 and the boosting spring 41.

[0050] The mounting member 1 further includes a third support rod 14. The third support rod 14 is connected to the mounting seat 11 and passes through the central hole 4111. The third support rod 14 is located between the first support rod 12 and the second support rod 13, and the third support rod 14 and the first support rod 12 are on the same side of the first support arm 412, and the third support rod 14 and the second support rod 13 are on the same side of the second support arm 413.

[0051] The boosting spring 41 includes a spring body 411, a first support arm 412 and a second support arm 413. The spring body 411 has a penetrating central hole 4111. The first support arm 412 is fixedly connected to one end of the spring body 411, and the second support arm 413 is fixedly connected to the end of the spring body 411 far from the first support arm 412.

[0052] The limiting member 42 passes through the central hole 4111 and is located between the first support arm 412 and the second support arm 413. The limiting member 42 has a first limiting wall 421 and a second limiting wall 422. The first limiting wall 421 and the first support rod 12 are on the same side of the first support arm 412, and the second limiting wall 422 and the second support rod 13 are on the same side of the second support arm 413. Wherein, the limiting member 42 has: a first position, at this time the first support arm 412 abuts against the first limiting wall 421, and the second support arm 413 abuts against the second support rod 13; a second position, at this time the first support arm 412 abuts against the first support rod 12, and the second support arm 413 abuts against the second limiting wall 422.

[0053] Since the limiting member 42, the first support rod 12 and the second support rod 13 all pass through the central hole 4111, and the first support arm 412 and the second support arm 413 need to abut against the first support rod 12 and the second support rod 13 respectively; therefore, the first support arm 412 and the second support arm 413 are in a structure that is involuted towards the central hole 4111 relative to the spring body 411. This structure is more compact, which helps to further reduce the installation space required for the boosting mechanism 4.

[0054] In this embodiment, when the limiting member 42 is in the first position, the seat back is in the first flat state; when the limiting member 42 is in the second position, the seat back is in the second flat state.

[0055] When the seat backrest needs to be turned upward from the first flat state to the unfolded state: The seat backrest is driven to rotate upward around the first axis 20 through the rotating shaft 2 and the connecting member 3. The spring body 411 gradually extends through the first support arm 412 and releases the spring potential energy. The first support arm 412 can apply a thrust to the seat backrest to offset part of the gravitational potential energy when the seat backrest is turned upward, thereby reducing the effort of the user to turn the seat and playing a boosting role with simple operation.

[0056] When the limiting member 42 rotates with the rotating shaft 2 to a preset position, the boosting spring 41 returns to a preset state. This preset state can be the natural extension state of the boosting spring 41, that is, the state where the elastic member does not accumulate elastic potential energy, or the preset compression state of the boosting spring 41, that is, the state where the elastic member accumulates a preset elastic potential energy.

[0057] Attached Figure 4 The shown limiting member 42 is placed at the preset position. At this time, the first support arm 412 abuts against the first support rod 12 and the first limiting wall 421 simultaneously, and the second support arm 413 abuts against the second support rod 13 and the second limiting wall 422 simultaneously. When the limiting member 42 rotates with the rotating shaft 2 to cross the preset position and needs to be turned downward from the preset position to the first position, the first support arm 412 separates from the first support rod 12 and continues to abut against the first limiting wall 421, and the second support arm 413 separates from the second limiting wall 422 and continues to abut against the second support rod 13; when the limiting member 42 rotates with the rotating shaft 2 to cross the preset position and needs to be turned downward from the preset position to the second position, the first support arm 412 separates from the first limiting wall 421 and continues to abut against the first support rod 12, and the second support arm 413 separates from the second support rod 13 and continues to abut against the second limiting wall 422.

[0058] When the seat backrest needs to be turned downward from the unfolded state to the second flat state, the seat backrest is driven to rotate downward around the first axis 20 through the rotating shaft 2 and the connecting member 3. The rotation of the rotating shaft 2 drives the second limiting wall 422 to abut against the second support arm 413 and gradually applies pressure to the second support arm 413, resulting in the second support arm 413 gradually compressing the spring body 411 and converting part of the gravitational potential energy when the seat backrest is turned downward into the elastic potential energy of the spring body 411. By accumulating the elastic potential energy in the spring body 411 to offset part of the gravitational potential energy when the seat backrest is turned downward, the speed of the seat backrest's descent can be slowed down to play a buffering role, improving the maneuverability when the seat backrest is turned and helping to extend the service life of the internal parts of the seat.

[0059] Similarly, when the seat backrest needs to be flipped upward from the second flat state to the unfolded state, the spring body 411 gradually extends through the first support arm 412 and releases the spring potential energy to offset part of the gravitational potential energy of the upward flipping of the seat backrest, thus acting on the seat; when the seat backrest needs to be flipped downward from the unfolded state to the first flat state, the limiting member 42 gradually compresses the spring body 411 through the second support arm 413 to accumulate elastic potential energy to offset part of the gravitational potential energy when the seat backrest is flipped downward, thus playing a buffering role. Therefore, the flipping device provided by the present utility model can achieve two-way buffering and boosting of the seat backrest during the flipping process of the seat backrest through the boosting mechanism 4.

[0060] Referring to Figures 1 - 2 FIG. and Figures 6 - 11 As shown in the figure, the flipping device provided by the embodiment of the present utility model further includes a driving motor 5, and the driving motor 5 is connected to the rotating shaft 2 and can drive the rotating shaft 2 to rotate around the first axis 20. The use of the driving motor 5 can achieve automatic flipping of the seat backrest, which is convenient for use. The boosting mechanism 4 can play a boosting role during the process of the driving motor 5 driving the seat backrest to flip, so as to reduce the load of the driving motor 5.

[0061] In this embodiment, the driving motor 5 is fixedly connected to the mounting member 1 and is located on the side of the mounting member 1 away from the connecting member 3.

[0062] The rotating shaft 2 includes a shaft main body 21 and an abutting portion 22. The abutting portion 22 is fixedly connected to the outer wall of the shaft main body 21. The abutting portion 22 has an abutting wall 221. The shaft main body 21 passes through the through hole 1111, and the limiting member 42 is fixedly connected to the outer wall of the shaft main body 21; the driving motor 5 has an output shaft 51, and a driving hole 511 is opened in the output shaft 51. The shaft main body 21 passes through the driving hole 511, and the abutting portion 22 is arranged in the driving hole 511; wherein, when the driving motor 5 drives the output shaft 51 to rotate around the first axis 20, the hole wall of the driving hole 511 can abut against the abutting wall 221 and drive the rotating shaft 2 to rotate around the first axis 20, or there is a gap between the hole wall of the driving hole 511 and the outer wall of the rotating shaft 2.

[0063] Most of the flipping devices equipped with driving motors in the prior art adopt the method of fixedly connecting the rotating shaft 2 and the driving motor together. Although the flipping device adopting this fixed connection method can drive the rotating shaft 2 to rotate by inputting power at the end where the driving motor is located to adjust the angle of the seat backrest; however, when the flipping device adopting this fixed connection method drives the rotating shaft 2 to rotate by inputting power at the end where the connecting member 3 is located to adjust the angle of the seat backrest, the rotation of the rotating shaft 2 will drag the driving motor in the reverse direction, resulting in a great resistance of the driving motor to the rotation of the rotating shaft 2, so that it is more difficult to adjust the angle of the seat backrest by inputting power at the end where the connecting member 3 is located, and the adjustment flexibility of the angle of the seat backrest is poor.

[0064] The flipping device provided by the present utility model enables the hole wall of the driving hole 511 to be both in contact with the abutting wall 221 of the rotating shaft 2 and in an adjustable connection manner with a gap from the abutting wall 221 of the rotating shaft 2; when the driving motor 5 drives the output shaft 51 to rotate until the hole wall of the driving hole 511 abuts against the abutting portion 22, by inputting power at the end where the output shaft 51 is located to drive the rotating shaft 2 to rotate around the first axis 20, the storage and deployment of the seat back can be adjusted; when the driving motor 5 drives the output shaft 51 to rotate until there is a gap between the hole wall of the driving hole 511 and the outer wall of the rotating shaft 2, by inputting power at the end where the connecting member 3 is located to drive the rotating shaft 2 to rotate around the first axis 20, since there is a gap between the hole wall of the driving hole 511 and the outer wall of the rotating shaft 2, the rotation of the rotating shaft 2 will not drag the driving motor 5 in the reverse direction, thereby avoiding the driving motor 5 from generating resistance to the rotation of the rotating shaft 2 within a predetermined angle range (the predetermined angle range refers to the angle range where there is a gap between the hole wall of the driving hole 511 and the outer wall of the abutting portion 22), and further enabling the angle of the seat back to be easily adjusted by inputting power at the end where the connecting member 3 is located within the predetermined angle range, improving the adjustment flexibility of the angle of the seat back; therefore, the storage mechanism provided by the present utility model can easily adjust the angle of the seat back by inputting power at the end where the connecting member 3 is located within a predetermined angle range by providing the abutting portion 22 on the rotating shaft 2 and opening the driving hole 511 on the output shaft 51, thereby being able to improve the adjustment flexibility of the angle of the seat back.

[0065] By providing the abutting portion 22 on the rotating shaft 2 and providing the driving hole 511 on the output shaft 51, the flexible adjustment of the angle of the seat back within a predetermined angle range can be achieved, which has the advantages of simple structure, few components, and low production cost.

[0066] In this embodiment, the shaft main body 21 includes a first shaft body 211, a second shaft body 212, a third shaft body 213, and a fourth shaft body 214 connected in sequence. The first shaft body 211 is fixedly connected to the connecting member 3. The third shaft body 213 passes through the through hole 1111. The limiting member 42 is fixedly connected to the outer wall of the third shaft body 213. The abutting portion 22 is fixedly connected to the fourth shaft body 214. The fourth shaft body 214 passes through the driving hole 511.

[0067] In this embodiment, the diameter of the second shaft body 212 is greater than the diameter of the third shaft body 213. By adopting the method that the diameter of the second shaft body 212 is greater than the diameter of the third shaft body 213, the second shaft body 212 can play a positioning role during the assembly process of the third shaft body 213 passing through the through hole 1111, facilitating the quick and convenient assembly between the rotating shaft 2 and the mounting member 1.

[0068] Refer to Figures 6 - 11, the abutting wall 221 includes a first abutting surface 2211, a first connecting surface 2212, and a second abutting surface 2213 that are sequentially connected along the first direction S; the hole wall of the driving hole 511 includes a driving surface 5111; the driving motor drives the output shaft 51 to rotate around the first axis 20, enabling the output shaft 51 to switch between a first state, a second state, and a third state; wherein, when the output shaft 51 is in the first state, the driving surface 5111 abuts against the first abutting surface 2211 and can drive the rotating shaft 2 to rotate along the first direction S around the first axis 20; when the output shaft 51 is in the second state, there is a gap between the hole wall of the driving hole 511 and the outer wall of the rotating shaft 2; when the output shaft 51 is in the third state, the driving surface 5111 abuts against the second abutting surface 2213 and can drive the rotating shaft 2 to rotate along the second direction N around the first axis 20, and the second direction N is opposite to the first direction S.

[0069] In this embodiment, the first direction S is the clockwise direction, and the second direction N is the counterclockwise direction.

[0070] In some other embodiments, it is also possible to adopt the setting method where the first direction S is the counterclockwise direction and the second direction N is the clockwise direction, which is not limited herein.

[0071] When the output shaft 51 is placed in the first state, the driving motor 5 drives the output shaft 51 to rotate around the first axis 20 along the second direction N, and can switch the output shaft 51 from the first state to the second state;

[0072] When the output shaft 51 is placed in the second state, the driving motor 5 drives the output shaft 51 to rotate around the first axis 20 along the first direction S, and can switch the output shaft 51 from the second state to the first state; the driving motor 5 drives the output shaft 51 to rotate around the first axis 20 along the second direction N, and can switch the output shaft 51 from the second state to the third state; when the output shaft 51 is placed in the third state, the driving motor 5 drives the output shaft 51 to rotate around the first axis 20 along the first direction S, and can switch the output shaft 51 from the third state to the second state. The output shaft 51 has a predetermined position in the second state. When the output shaft 51 rotates by a first specified angle b along the first direction S around the first axis 20 from the predetermined position, the driving surface 5111 can be abutted against the first abutting surface 2211 to switch the output shaft 51 from the second state to the first state. When the output shaft 51 rotates by a second specified angle c along the second direction N around the first axis 20 from the predetermined position, the driving surface 5111 can be abutted against the second abutting surface 2213 to switch the output shaft 51 from the second state to the third state.

[0073] The output shaft 51 has a predetermined angle a at the predetermined position, and the predetermined angular interval D in which there is a gap between the hole wall of the driving hole 511 and the outer wall of the abutting portion 22 is between a - b and a + c. That is, a - b ≤ D ≤ a + c.

[0074] In this embodiment, the predetermined angle a = 115°, the first specified angle b = 20°, that is Figure 9 the output shaft 51 rotates 20° around the first axis 20 and in the second direction N to obtain Figure 10 . The second specified angle c = 20°, Figure 10 rotates 20° around the first axis 20 and in the second direction N to obtain Figure 11 . Since a = 115°, b = 20°, and c = 20°, the predetermined angle range D is between 95° and 135°, that is, D = 95° to 135°.

[0075] Optionally, the predetermined angle a can be any value that satisfies 0° ≤ a ≤ 180°, such as 0°, 5°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 180°, etc., and is not limited herein.

[0076] Optionally, the first specified angle b can be any value that satisfies 0° ≤ b ≤ 180°, such as 0°, 5°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 180°, etc., and is not limited herein.

[0077] Preferably, 10° ≤ b ≤ 30°.

[0078] Optionally, the second specified angle c can be any value that satisfies 0° ≤ c ≤ 180°, such as 0°, 5°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 180°, etc., and is not limited herein.

[0079] Preferably, 10° ≤ c ≤ 30°.

[0080] In this embodiment, the driving surface 5111 has a planar structure, the first abutting surface 2211 has a planar structure, the first connecting surface 2212 has an arc surface structure, and the second abutting surface 2213 has a planar structure. By using the planar driving surface 5111, the first abutting surface 2211, and the second abutting surface 2213, when the first abutting surface 2211 (or the second abutting surface 2213) abuts against the driving surface 5111, the first abutting surface 2211 (or the second abutting surface 2213) can be in close contact with the driving surface 5111 and have a large contact surface, so that the driving surface 5111 can effectively transmit the rotational torque to the first abutting surface 2211 (or the second abutting surface 2213), and further enable the output shaft 51 to drive the rotating shaft 2 more stably and reliably.

[0081] The first connecting surface 2212 with an arc surface structure can not only reduce the stress concentration at the connection position between the first abutting surface 2211 and the second abutting surface 2213, improve the durability of the abutting portion 22, but also avoid sharp features at the connection position between the first abutting surface 2211 and the second abutting surface 2213, so as to prevent the first connecting surface 2212 from scratching or damaging the driving surface 5111.

[0082] In this embodiment, the number of driving surfaces 5111 is multiple, and the multiple driving surfaces 5111 are spaced apart around the first axis 20.

[0083] In some other embodiments, the multiple driving surfaces 5111 can also be arranged in a manner of being sequentially connected around the first axis 20, that is, the multiple driving surfaces 5111 may not be spaced apart around the first axis 20.

[0084] In this embodiment, the hole wall of the driving hole 511 further includes an arc transition surface 5112, and the multiple driving surfaces 5111 are spaced apart around the first axis 20 and along the first direction S; along the first direction S, adjacent two driving surfaces 5111 are connected by the arc transition surface 5112.

[0085] In this embodiment, the driving hole 511 is a square hole, and the number of driving surfaces 5111 is four.

[0086] In this embodiment, the number of abutting walls 221 is multiple, and the multiple abutting walls 221 are spaced apart around the first axis 20 and along the first direction S, and the number of abutting walls 221 is equal to the number of driving surfaces 5111. By using multiple abutting walls 221 and multiple driving surfaces 5111, when the output shaft 51 is in the first state or the third state, more contact points and a larger contact surface can be provided between the hole wall of the driving hole 511 and the abutting portion 22, so that the output shaft 51 can more effectively transmit the rotational torque to the rotating shaft 2 through the driving hole 511, which helps to further improve the stability and reliability of the output shaft 51 driving the rotating shaft 2 to rotate.

[0087] In this embodiment, the abutting portion 22 further has an avoidance wall 222 for avoiding the hole wall of the driving hole 511; along the first direction S, adjacent two abutting walls 221 are connected by the avoidance wall 222.

[0088] The avoidance wall 222 includes a second connection surface 2221, an avoidance surface 2222, and a third connection surface 2223 that are sequentially connected along the first direction S. An avoidance groove 22211 with an opening facing the hole wall of the driving hole 511 is formed between the third connection surface 2223, the avoidance surface 2222, and the third connection surface 2223; one end of the second connection surface 2221 away from the avoidance surface 2222 is connected to the second abutting surface 2213 of the abutting wall 221, and one end of the third connection surface 2223 away from the avoidance surface 2222 is connected to the first abutting surface 2211 of the abutting wall 221.

[0089] By using the second connection surface 2221, the avoidance surface 2222, and the third connection surface 2223 that are sequentially connected and forming the avoidance groove 22211 with an opening facing the hole wall of the driving hole 511, the abutting wall 221 can be configured as the part that protrudes most towards the hole wall direction of the driving hole 511 in the abutting portion 22. Thus, when there is a gap between the abutting wall 221 and the hole wall of the driving hole 511, there is a gap between all the outer walls of the abutting portion 22 and the hole wall of the driving hole 511, ensuring that any outer wall of the abutting portion 22 other than the abutting wall 221 will not come into contact with the hole wall of the driving hole 511 during the rotation of the rotating shaft 2, which helps to ensure the smooth switching of the output shaft 51 between the first state, the second state, and the third state.

[0090] In this embodiment, the second connection surface 2221 has an arc surface structure, the third connection surface 2223 has an arc surface structure, and the avoidance surface 2222 has a curved surface structure. Specifically, the avoidance surface 2222 is a curved surface formed by sequentially connecting multiple arc surfaces.

[0091] The second connection surface 2221 with an arc surface structure can not only reduce the stress concentration at the connection position between the avoidance surface 2222 and the second abutting surface 2213, but also play a guiding role during the separation process of the second abutting surface 2213 from the driving surface 5111 (i.e., the process of the output shaft 51 switching from the third state to the second state), so that the second abutting surface 2213 can smoothly separate from the driving surface 5111, ensuring that the output shaft 51 can smoothly, stably, and reliably switch from the third state to the second state.

[0092] The third connection surface 2223 with an arc surface structure can not only reduce the stress concentration at the connection position between the avoidance surface 2222 and the first abutting surface 2211, but also play a guiding role during the separation process of the first abutting surface 2211 from the driving surface 5111 (i.e., the process of the output shaft 51 switching from the first state to the second state), so that the first abutting surface 2211 can smoothly separate from the driving surface 5111, enabling the output shaft 51 to smoothly, stably, and reliably switch from the first state to the second state.

[0093] The present utility model further provides a seat, and the seat includes a flipping device according to any one of the above.

[0094] The seat further includes a seat backrest, and the seat backrest is fixedly connected to the connecting member 3.

[0095] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A flipping device, characterized in that, Comprising: A mounting member (1), the mounting member (1) having a through hole (1111); A rotating shaft (2), the rotating shaft (2) being inserted through the through hole (1111); A connecting member (3), the connecting member (3) being fixedly connected to the rotating shaft (2) and located on one side of the mounting member (1), the connecting member (3) being used for connecting a seat back; An assisting mechanism (4), the assisting mechanism (4) comprising an assisting spring (41) and a limiting member (42); the assisting spring (41) having a through central hole (4111), the rotating shaft (2) being inserted through the central hole (4111), the limiting member (42) being fixedly connected to the outer wall of the rotating shaft (2) and inserted through the central hole (4111), the limiting member (42) connecting the mounting member (1) and the assisting spring (41) respectively.

2. The turnover device according to claim 1, wherein The mounting member (1) comprises a mounting base (11), a first support rod (12) and a second support rod (13), the mounting base (11) having the through hole (1111), the first support rod (12) being connected to the mounting base (11), the second support rod (13) being connected to the mounting base (11); The assisting spring (41) comprises a spring body (411), a first support arm (412) and a second support arm (413), the spring body (411) having a through central hole (4111), the first support arm (412) being fixedly connected to one end of the spring body (411), the second support arm (413) being fixedly connected to the end of the spring body (411) away from the first support arm (412), the first support rod (12) being inserted through the central hole (4111), the second support rod (13) being inserted through the central hole (4111); The limiting member (42) is inserted through the central hole (4111) and located between the first support arm (412) and the second support arm (413), the limiting member (42) having a first limiting wall (421) and a second limiting wall (422), the first limiting wall (421) and the first support rod (12) being on the same side of the first support arm (412), the second limiting wall (422) and the second support rod (13) being on the same side of the second support arm (413); Wherein, the limiting member (42) has: A first position, at this time the first support arm (412) abuts against the first limiting wall (421), and the second support arm (413) abuts against the second support rod (13); A second position, at this time the first support arm (412) abuts against the first support rod (12), and the second support arm (413) abuts against the second limiting wall (422).

3. The flipping device according to claim 2, characterized in that, The mounting base (11) includes a first side plate (111), a bottom plate (112), and a second side plate (113). The first side plate (111) is connected to one end of the bottom plate (112), and the second side plate (113) is connected to the end of the bottom plate (112) away from the first side plate (111) and is disposed opposite to the first side plate (111). Both the first side plate (111) and the second side plate (113) have the through holes (1111). An installation groove (110) is formed between the first side plate (111), the bottom plate (112), and the second side plate (113), and the boosting mechanism (4) is disposed in the installation groove (110).

4. The turnover device according to claim 3, characterized in that Both ends of the first support rod (12) are respectively connected to the first side plate (111) and the second side plate (113), and both ends of the second support rod (13) are respectively connected to the first side plate (111) and the second side plate (113).

5. The turnover device according to any one of claims 1-4, characterized in that It further includes a driving motor (5), and the driving motor (5) is connected to the rotating shaft (2) and can drive the rotating shaft (2) to rotate around the first axis (20).

6. The turnover device according to claim 5, wherein The rotating shaft (2) includes a shaft main body (21) and an abutting portion (22). The abutting portion (22) is fixedly connected to the outer wall of the shaft main body (21). The abutting portion (22) has an abutting wall (221). The shaft main body (21) passes through the through hole (1111), and the limiting member (42) is fixedly connected to the outer wall of the shaft main body (21). The driving motor (5) has an output shaft (51), and a driving hole (511) is formed in the output shaft (51). The shaft main body (21) passes through the driving hole (511), and the abutting portion (22) is disposed in the driving hole (511). Wherein, when the driving motor (5) drives the output shaft (51) to rotate around the first axis (20), the hole wall of the driving hole (511) can abut against the abutting wall (221) to drive the rotating shaft (2) to rotate around the first axis (20), or there is a gap between the hole wall of the driving hole (511) and the outer wall of the rotating shaft (2).

7. The turnover device according to claim 6, characterized in that, The abutting wall (221) includes a first abutting surface (2211), a first connecting surface (2212), and a second abutting surface (2213) connected in sequence along the first direction (S); the hole wall of the driving hole (511) includes a driving surface (5111); when the driving motor (5) drives the output shaft (51) to rotate around the first axis (20), the output shaft (51) can be switched between a first state, a second state, and a third state. Wherein, when the output shaft (51) is in the first state, the driving surface (5111) abuts against the first abutting surface (2211) and can drive the rotating shaft (2) to rotate around the first axis (20) in the first direction (S); when the output shaft (51) is in the second state, there is a gap between the hole wall of the driving hole (511) and the outer wall of the rotating shaft (2); when the output shaft (51) is in the third state, the driving surface (5111) abuts against the second abutting surface (2213) and can drive the rotating shaft (2) to rotate around the first axis (20) in the second direction (N), and the second direction (N) is opposite to the first direction (S).

8. The turnover device according to claim 7, characterized in that, The driving surface (5111) has a planar structure, the first abutting surface (2211) has a planar structure, the first connecting surface (2212) has an arc surface structure, and the second abutting surface (2213) has a planar structure.

9. The turnover device according to claim 7, characterized in that, The number of the abutting walls (221) is multiple, and the multiple abutting walls (221) are distributed at intervals around the first axis (20) and along the first direction (S), and the number of the abutting walls (221) is equal to the number of the driving surfaces (5111); The abutting portion (22) further has an avoidance wall (222) for avoiding the hole wall of the driving hole (511); along the first direction (S), adjacent two abutting walls (221) are connected by the avoidance wall (222).

10. A seat, characterized in that, It includes the flipping device according to any one of claims 1-9.

Images