Electric turnover mechanism and seat

Abstract

The utility model relates to the technical field of seats, and discloses an electric turnover mechanism and a seat, the electric turnover mechanism comprises a mounting piece, a first rotating shaft, a connecting piece, a turnover motor, a second rotating shaft, a transmission assembly and a spring boosting assembly; the mounting piece comprises a mounting frame; the first rotating shaft and the second rotating shaft are arranged on the mounting frame in a penetrating manner; the connecting piece is connected to the first rotating shaft; the overturning motor is connected with the first rotating shaft; the transmission assembly comprises a first gear and a second gear, and the first gear and the second gear are fixed to the first rotating shaft and the second rotating shaft respectively. The spring boosting assembly is connected with the mounting frame and the second rotating shaft. According to the electric turnover mechanism provided by the utility model, automatic turnover of the seat body is realized through the first rotating shaft, the connecting piece and the turnover motor, and the electric turnover mechanism is convenient to use; and through the second rotating shaft, the first gear, the second gear and the spring boosting assembly, the output power of the turnover motor for driving the seat body to turn over can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an electric flipping mechanism and a seat. Background Art

[0002] In the design process of vehicle seats, in order to facilitate the sitting and lying needs of users, and for the rear seats of vehicles to have more space when stacking goods, a flipping mechanism needs to be provided; the flipping mechanisms in the prior art generally adopt the manual flipping method, which is inconvenient to use. Summary of the Utility Model

[0003] Aiming at least to solve one of the technical problems existing in the prior art, the utility model provides an electric flipping mechanism, which can realize the automatic flipping of the seat body and is convenient to use.

[0004] To achieve the above object, the utility model provides an electric flipping mechanism having a first direction. The electric flipping mechanism includes a mounting member, a first rotating shaft, a connecting member, a flipping motor, a second rotating shaft, a transmission assembly, and a spring assist assembly; the mounting member includes a mounting frame; the first rotating shaft is disposed through the mounting frame along the first direction; the connecting member is connected to the first rotating shaft and is used for connecting the seat body; the flipping motor is connected to the first rotating shaft and can drive the first rotating shaft to rotate around a first axis, and the first axis is parallel to the first direction; the second rotating shaft is disposed through the mounting frame along the first direction; the transmission assembly includes a first gear and a second gear, the first gear is sleeved and fixed on the first rotating shaft, the second gear is sleeved and fixed on the second rotating shaft and meshes with the first gear; the spring assist assembly is respectively connected to the mounting frame and the second rotating shaft.

[0005] In some embodiments, the spring assist assembly includes a limiting member and a first spring; the limiting member is fixedly connected to the second rotating shaft, and the limiting member has a first limiting wall and a second limiting wall; the first spring includes a first body portion, a first acting arm, and a second acting arm, the first body portion is sleeved on the second rotating shaft, and the first acting arm and the second acting arm are respectively connected to both ends of the second rotating shaft; the mounting frame has a first supporting wall and a second supporting wall, the first limiting wall and the first supporting wall are located on the first side of the second rotating shaft, and the second limiting wall and the second supporting wall are located on the second side of the second rotating shaft; wherein, the limiting member has: a first position, at this time the first acting arm abuts against the first supporting wall, and the second acting arm abuts against the second limiting wall; a second position, at this time the first acting arm abuts against the first limiting wall, and the second acting arm abuts against the second supporting wall.

[0006] In some embodiments, the spring assist assembly further includes a second spring. The second spring includes a second body portion, a third acting arm, and a fourth acting arm. The second body portion is sleeved on the second rotating shaft. The third acting arm and the fourth acting arm are respectively connected to two ends of the second body portion. Wherein, when the limiting member is in the first position, the third acting arm abuts against the first supporting wall, and the fourth acting arm abuts against the second limiting wall. When the limiting member is in the second position, the third acting arm abuts against the second limiting wall, and the fourth acting arm abuts against the second supporting wall.

[0007] In some embodiments, the second body portion is located between the outer wall of the second rotating shaft and the inner wall of the first body portion.

[0008] In some embodiments, the limiting member includes a first connecting portion and a limiting portion. The limiting portion is connected to the first connecting portion. The first connecting portion is provided with a through fixing hole. The first connecting portion is sleeved and fixed on the second rotating shaft through the fixing hole. The limiting portion has the first limiting wall and the second limiting wall.

[0009] In some embodiments, the second rotating shaft includes a first shaft portion, a fixing portion, and a second shaft portion that are sequentially connected along the first direction. The first connecting portion is sleeved and fixed on the fixing portion through the fixing hole. Wherein, the first direction is perpendicular to the first plane. Along the first direction, the orthographic projection of the fixing portion on the first plane is within the range of the orthographic projection of the first shaft portion on the first plane, and the orthographic projection of the second shaft portion on the first plane is within the range of the orthographic projection of the fixing portion on the first plane.

[0010] In some embodiments, the fixing hole is a square fixing hole, and the fixing portion is a square fixing portion that matches the square fixing hole.

[0011] In some embodiments, the mounting bracket includes a first mounting portion, a second mounting portion, a second connecting portion, a first supporting portion, and a second supporting portion. Two ends of the second connecting portion are respectively connected to the first mounting portion and the second mounting portion. The first mounting portion and the second mounting portion are both provided with first through holes. The first rotating shaft passes through the first through holes. The first mounting portion and the second mounting portion are both provided with second through holes. The second rotating shaft passes through the second through holes. The first supporting portion is located on the first side of the second rotating shaft and has the first supporting wall. The first supporting portion is connected to the first mounting portion and / or the second mounting portion. The second supporting portion is located on the second side of the second rotating shaft and has the second supporting wall. The second supporting portion is connected to the first mounting portion and / or the second mounting portion.

[0012] In some embodiments, the mounting member further includes a mounting base, the mounting frame is connected to the mounting base, and the mounting base is used to be connected to the vehicle body.

[0013] The present utility model also provides a seat, which includes the electric flipping mechanism described in any one of the above, and further includes a seat body, and the seat body is connected to the connecting member.

[0014] Compared with the prior art, the electric flipping mechanism provided by the embodiment of the present utility model has the following beneficial effects: (1) The flipping motor can drive the first rotating shaft to rotate around the first axis, thereby driving the connecting member to drive the seat body to rotate around the first axis, so as to realize the automatic flipping of the seat body, which is convenient to use.

[0015] (2) By sleeving and fixing the first gear and the second gear on the first rotating shaft and the second rotating shaft respectively, the rotation of the first rotating shaft can be transmitted to the second rotating shaft and drive the second rotating shaft to rotate. By connecting the spring assisting assembly to the mounting frame and the second rotating shaft respectively, the elastic potential energy of the spring assisting assembly can be stored and released through the rotation of the second rotating shaft. Thus, part of the gravitational potential energy when the seat body flips can be offset by the storage and release of the elastic potential energy, so that the spring assisting assembly can play a assisting role in the process of the flipping motor flipping the seat body, reduce the output power required for the flipping motor to drive the seat body to flip, and further enable an automatic flipping of the seat body to be realized by using a flipping motor with a smaller output power and a smaller volume. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is an exploded view of an electric flipping mechanism provided by an embodiment of the present utility model;

[0018] Figure 3 is a structural diagram of the second rotating shaft provided by an embodiment of the present utility model;

[0019] Figure 4 is a structural diagram of the mounting frame provided by an embodiment of the present utility model;

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

[0021] Figure 6 is a structural diagram of the seat provided by an embodiment of the present utility model.

[0022] In the figure, 100, electric flipping mechanism; 200, seat body; 300, mechanical flipping mechanism; 400, pit.

[0023] 1. Mounting member; 11. Mounting frame; 12. Mounting base; 111. First mounting portion; 112. Second mounting portion; 113. Second connecting portion; 114. First supporting portion; 115. Second supporting portion; 1111. First through hole; 1112. Second through hole; 1141. First supporting wall; 1151. Second supporting wall;

[0024] 2. First rotating shaft;

[0025] 3. Connecting member;

[0026] 4. Tipping motor;

[0027] 5. Second rotating shaft; 51. First shaft portion; 52. Fixed portion; 53. Second shaft portion;

[0028] 6. Transmission assembly; 61. First gear; 62. Second gear;

[0029] 7. Spring assist assembly; 71. Limiting member; 72. First spring; 73. Second spring; 711. First connecting portion; 712. Limiting portion; 721. First body portion; 722. First acting arm; 723. Second acting arm; 731. Second body portion; 732. Third acting arm; 733. Fourth acting arm; 7111. Fixing hole; 7121. First limiting wall; 7122. Second limiting wall;

[0030] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0031] The following combines the drawings and embodiments to further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 utility model.

[0033] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating 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.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the 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 other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates 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 that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of the embodiments of the present utility model, the term "and / or" is merely an association relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0037] As Figures 1 - 5 shown, a preferred electric flipping mechanism 100 in the embodiments of the present utility model has a first direction X. The electric flipping mechanism 100 includes a mounting member 1, a first rotating shaft 2, a connecting member 3, a flipping motor 4, a second rotating shaft 5, a transmission assembly 6 and a spring assisting assembly 7.

[0038] The mounting member 1 includes a mounting frame 11; the first rotating shaft 2 is disposed through the mounting frame 11 along the first direction X; the connecting member 3 is connected to the first rotating shaft 2 and is used for connecting the seat body 200; the flipping motor 4 is connected to the first rotating shaft 2 and can drive the first rotating shaft 2 to rotate around the first axis, and the first axis is parallel to the first direction X; the second rotating shaft 5 is disposed through the mounting frame 11 along the first direction X; the transmission assembly 6 includes a first gear 61 and a second gear 62. The first gear 61 is sleeved and fixed on the first rotating shaft 2, and the second gear 62 is sleeved and fixed on the second rotating shaft 5 and meshes with the first gear 61; the spring assisting assembly 7 is respectively connected to the mounting frame 11 and the second rotating shaft 5.

[0039] Based on this technical solution, the flipping motor 4 can drive the first rotating shaft 2 to rotate around the first axis, thereby driving the connecting member 3 to drive the seat body 200 to rotate around the first axis, so as to realize the automatic flipping of the seat body 200, which is convenient to use. By sleeving and fixing the first gear 61 and the second gear 62 on the first rotating shaft 2 and the second rotating shaft 5 respectively, the rotation of the first rotating shaft 2 can be transmitted to the second rotating shaft 5 to drive the second rotating shaft 5 to rotate. By connecting the spring assist assembly 7 to the mounting bracket 11 and the second rotating shaft 5 respectively, the elastic potential energy of the spring assist assembly 7 can be stored and released by the rotation of the second rotating shaft 5, so that part of the gravitational potential energy during the flipping of the seat body 200 can be offset by the storage and release of the elastic potential energy, so that the spring assist assembly 7 can play a boosting role during the process of the flipping motor 4 flipping the seat body 200, reducing the output power required for the flipping motor 4 to drive the seat body 200 to flip, and further enabling the use of a flipping motor 4 with a smaller output power and a smaller volume to realize the automatic flipping of the seat body 200.

[0040] The first axis is the central axis of the first rotating shaft 2.

[0041] Refer to Figures 1 - 2 , the mounting member 1 provided by the embodiment of the present invention further includes a mounting seat 12, the mounting bracket 11 is connected to the mounting seat 12, and the mounting seat 12 is used to connect to the vehicle body.

[0042] Refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the spring assist assembly 7 provided by the embodiment of the present invention includes a limiting member 71 and a first spring 72; the limiting member 71 is fixedly connected to the second rotating shaft 5, and the limiting member 71 has a first limiting wall 7121 and a second limiting wall 7122; the first spring 72 includes a first body portion 721, a first acting arm 722 and a second acting arm 723, the first body portion 721 is sleeved on the second rotating shaft 5, and the first acting arm 722 and the second acting arm 723 are respectively connected to both ends of the second rotating shaft 5; the mounting bracket 11 has a first supporting wall 1141 and a second supporting wall 1151, the first limiting wall 7121 and the first supporting wall 1141 are located on the first side of the second rotating shaft 5, and the second limiting wall 7122 and the second supporting wall 1151 are located on the second side of the second rotating shaft 5; wherein, the limiting member 71 has: a first position, at this time the first acting arm 722 abuts against the first supporting wall 1141, and the second acting arm 723 abuts against the second limiting wall 7122; a second position, at this time the first acting arm 722 abuts against the first limiting wall 7121, and the second acting arm 723 abuts against the second supporting wall 1151.

[0043] In this embodiment, when the limiting member 71 is in the first position, the seat is in the stowed state; when the limiting member 71 is in the second position, the seat is in the deployed state.

[0044] When the seat is in the stowed state, the limiting member 71 is in the first position, the first acting arm 722 abuts against the first support wall 1141, the second acting arm 723 abuts against the second limiting wall 7122, and the first spring 72 stores elastic potential energy; when the flipping motor 4 drives the seat body 200 to flip upward around the first axis through the first rotating shaft 2 and the connecting member 3 to deploy the seat body 200, the rotation of the first rotating shaft 2 is transmitted to the second rotating shaft 5 through the meshing of the first gear 61 and the second gear 62 and drives the second rotating shaft 5 to rotate. The second rotating shaft 5 drives the limiting member 71 to rotate and causes the first spring 72 to release elastic potential energy; the released elastic potential energy can assist the second rotating shaft 5 to continue rotating through the limiting member 71, so as to assist the continuous rotation of the first rotating shaft 2 to offset part of the gravitational potential energy when the seat body 200 flips upward, and further reduce the output power of the flipping motor 4, so that a flipping motor 4 with a smaller output power and a smaller volume can be used to realize the automatic flipping of the seat.

[0045] When the limiting member 71 flips to the preset position, the first spring 72 returns to the preset state. The preset state can be either the natural stretching state of the first spring 72, that is, the state where the first spring 72 does not store elastic potential energy, or the minimum compression state of the first spring 72, that is, the state where the first spring 72 stores the minimum elastic potential energy.

[0046] When the limiting member 71 crosses the preset position and needs to flip from the preset position to the second position, the first acting arm 722 separates from the first support wall 1141 and abuts against the first limiting wall 7121, the second acting arm 723 separates from the second limiting wall 7122 and abuts against the second support wall 1151, and the first spring 72 stores elastic potential energy to offset part of the gravitational potential energy when the seat body 200 flips downward, slowing down the speed when the seat body 200 descends to improve the maneuverability when the seat body 200 flips, until the limiting member 71 is in the second position and the seat is in the deployed state.

[0047] The first spring 72 can be any spring such as a torsion spring, a tension spring, a compression spring, etc. that can assist in the flipping process of the flipping mechanism through the storage and release of elastic potential energy, and is not limited here.

[0048] The spring assist assembly 7 further includes a second spring 73. The second spring 73 includes a second body portion 731, a third acting arm 732, and a fourth acting arm 733. The second body portion 731 is sleeved on the second rotating shaft 5, and the third acting arm 732 and the fourth acting arm 733 are respectively connected to both ends of the second body portion 731. Among them, when the limiting member 71 is in the first position, the third acting arm 732 abuts against the first support wall 1141, and the fourth acting arm 733 abuts against the second limiting wall 7122. When the limiting member 71 is in the second position, the third acting arm 732 abuts against the second limiting wall 7122, and the fourth acting arm 733 abuts against the second support wall 1151. Using the second spring 73 can improve the assisting effect of the spring assist assembly 7 on the flipping motor 4.

[0049] The second spring 73 can be any spring such as a torsion spring, a tension spring, a compression spring, etc. that can assist in the flipping process of the flipping mechanism by storing and releasing elastic potential energy, and is not limited here.

[0050] The second body portion 731 is located between the outer wall of the second rotating shaft 5 and the inner wall of the first body portion 721. In this way, a smaller installation space can be occupied and the structure is compact.

[0051] Refer to Figures 1 - 3 In this embodiment, the second rotating shaft 5 provided by the embodiment of the present utility model includes a first shaft portion 51, a fixing portion 52, and a second shaft portion 53 that are sequentially connected along the first direction X. The connecting portion is sleeved and fixed on the fixing portion 52 through the fixing hole 7111. Among them, the first direction X is perpendicular to the first plane. Along the first direction X, the orthographic projection of the fixing portion 52 on the first plane is within the range of the orthographic projection of the first shaft portion 51 on the first plane, and the orthographic projection of the second shaft portion 53 on the first plane is within the range of the orthographic projection of the fixing portion 52 on the first plane. In this way, by using the orthographic projections of the fixing portion 52 and the second shaft portion 53 on the first plane to limit, the outer diameter of the second shaft portion 53 can be made smaller than the aperture of the fixing hole 7111, so that the limiting member 71 can be installed on the fixing portion 52 along the direction from the second shaft portion 53 to the fixing portion 52. By using the orthographic projections of the fixing portion 52 and the first shaft portion 51 on the first plane to limit, the end face of the second shaft portion 53 close to the fixing portion 52 can play a role in limiting and positioning the limiting member 71 during the process of installing the limiting member 71 on the fixing portion 52, which is convenient for accurately installing the limiting member 71 on the fixing portion 52.

[0052] The electric flipping mechanism further includes a second direction Y and a third direction Z. The second direction Y and the third direction Z intersect and form a first plane.

[0053] In this embodiment, the first body portion 721 is sleeved on the first shaft portion 51, and the second body portion 731 is located between the outer wall of the first shaft portion 51 and the inner wall of the first body portion 721.

[0054] Refer to Figure 1 、 Figure 2 and Figure 4 In the embodiment of the present utility model, the mounting bracket 11 provided includes a first mounting portion 111, a second mounting portion 112, a second connecting portion 113, a first supporting portion 114 and a second supporting portion 115. The two ends of the second connecting portion 113 are respectively connected to the first mounting portion 111 and the second mounting portion 112. Both the first mounting portion 111 and the second mounting portion 112 are provided with first through holes 1111, and the first rotating shaft 2 is inserted through the first through holes 1111. Both the first mounting portion 111 and the second mounting portion 112 are provided with second through holes 1112, and the second rotating shaft 5 is inserted through the second through holes 1112. The first supporting portion 114 is located on the first side of the second rotating shaft 5 and has a first supporting wall 1141. The first supporting portion 114 is connected to the first mounting portion 111 and the second mounting portion 112. The second supporting portion 115 is located on the second side of the second rotating shaft 5 and has a second supporting wall 1151. The second supporting portion 115 is connected to the first mounting portion 111 and the second mounting portion 112.

[0055] In some other embodiments, the first supporting portion 114 can also be only connected to the first mounting portion 111, or the first supporting portion 114 can be only connected to the second mounting portion 112.

[0056] In some other embodiments, the second supporting portion 115 can also be only connected to the first mounting portion 111, or the second supporting portion 115 can be only connected to the second mounting portion 112.

[0057] Refer to Figure 1 、 Figure 2 and Figure 5 In the embodiment of the present utility model, the limiting member 71 provided includes a first connecting portion 711 and a limiting portion 712. The limiting portion 712 is connected to the first connecting portion 711. The first connecting portion 711 is provided with a through fixing hole 7111. The first connecting portion 711 is sleeved and fixed on the second rotating shaft 5 through the fixing hole 7111. The limiting portion 712 has a first limiting wall 7121 and a second limiting wall 7122. The sleeve fixing is convenient for the disassembly and installation between the limiting member 71 and the second rotating shaft 5.

[0058] In this embodiment, the fixing hole 7111 is a square fixing hole 7111, and the fixing portion 52 is a square fixing portion 52 that matches the square fixing hole 7111. By using the square fixing hole 7111 and the square fixing portion 52, it is only necessary to sleeved the limiting member 71 onto the square fixing portion 52 through the square fixing hole 7111, which can avoid relative rotation between the second rotating shaft 5 and the limiting member 71, without the need for additional settings, and the installation is convenient and fast.

[0059] In some of these embodiments, the fixing hole 7111 can also be a triangular fixing hole 7111, a rhombic fixing hole 7111, or any shape that can prevent relative rotation between the second rotating shaft 5 and the limiting member 71 without additional settings.

[0060] In some other embodiments, the fixing hole 7111 can also be a circular fixing hole 7111. However, when the mounting hole is a circular fixing hole 7111, additional settings such as interference fit, keying, welding, screws, etc. are required to prevent relative rotation between the second rotating shaft 5 and the limiting member 71.

[0061] Referring to Figure 6 , the present utility model also provides a seat. The seat includes the electric flipping mechanism 100 of any one of the above, and further includes a seat body 200. The seat body 200 is connected to the connecting member 3.

[0062] In this embodiment, the seat further includes a mechanical flipping mechanism 300. The electric flipping assist mechanism is connected to one side of the seat body 200, and the mechanical flipping assist mechanism is connected to the other side of the seat body 200. Through the coordinated cooperation of the electric flipping mechanism 100 and the mechanical flipping mechanism 300, the seat body 200 is flipped downward and stored and hidden in the pit 400 or flipped upward from the pit and unfolded.

[0063] 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 replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. An electric flip mechanism having a first direction (X), characterized in that: include: A mounting member (1), wherein the mounting member (1) comprises a mounting frame (11); A first rotating shaft (2), the first rotating shaft (2) passing through the mounting frame (11) along the first direction (X); A connecting member (3), the connecting member (3) being connected to the first rotating shaft (2) and being used for connecting the seat body (200); a flip motor (4), the flip motor (4) being connected to the first rotating shaft (2) and capable of driving the first rotating shaft (2) to rotate around a first axis, wherein the first axis is parallel to the first direction (X); A second rotating shaft (5), the second rotating shaft (5) passing through the mounting frame (11) along the first direction (X); A transmission assembly (6), the transmission assembly (6) comprising a first gear (61) and a second gear (62), the first gear (61) being sleeved and fixed on the first rotating shaft (2), the second gear (62) being sleeved and fixed on the second rotating shaft (5) and meshing with the first gear (61); A spring booster assembly (7), wherein the spring booster assembly (7) is respectively connected to the mounting frame (11) and the second rotating shaft (5).

2. The electric turning mechanism according to claim 1, characterized in that: The spring assist assembly (7) comprises a limiting member (71) and a first spring (72); the limiting member (71) is fixedly connected to the second rotating shaft (5), and the limiting member (71) has a first limiting wall (7121) and a second limiting wall (7122); the first spring (72) comprises a first body portion (721), a first action arm (722) and a second action arm (723), the first body portion (721) is sleeved on the second rotating shaft (5), and the first action arm (722) and the second action arm (723) are respectively connected to two ends of the second rotating shaft (5); the mounting frame (11) comprises a first supporting wall (1141) and a second supporting wall (1151), the first limiting wall (7121) and the first supporting wall (1141) are located on a first side of the second rotating shaft (5), and the second limiting wall (7122) and the second supporting wall (1151) are located on a second side of the second rotating shaft (5); Wherein, the limiting member (71) has: a first position, at which the first action arm (722) abuts against the first support wall (1141), and the second action arm (723) abuts against the second limiting wall (7122); In the second position, the first acting arm (722) abuts against the first limiting wall (7121), and the second acting arm (723) abuts against the second supporting wall (1151).

3. The electric turning mechanism according to claim 2, characterized in that: The spring assist assembly (7) further comprises a second spring (73), the second spring (73) comprising a second body portion (731), a third action arm (732) and a fourth action arm (733), the second body portion (731) being sleeved on the second rotating shaft (5), the third action arm (732) and the fourth action arm (733) being respectively connected to two ends of the second body portion (731); Wherein, when the limiting member (71) is placed in the first position, the third acting arm (732) abuts against the first supporting wall (1141), and the fourth acting arm (733) abuts against the second limiting wall (7122); when the limiting member (71) is placed in the second position, the third acting arm (732) abuts against the second limiting wall (7122), and the fourth acting arm (733) abuts against the second supporting wall (1151).

4. The electric turning mechanism according to claim 3, characterized in that: The second body portion (731) is located between the outer wall of the second rotating shaft (5) and the inner wall of the first body portion (721).

5. The electric turning mechanism according to claim 2, characterized in that: The limiting member (71) comprises a first connecting portion (711) and a limiting portion (712); the limiting portion (712) is connected to the first connecting portion (711); the first connecting portion (711) is provided with a penetrating fixing hole (7111); the first connecting portion (711) is sleeved and fixed on the second rotating shaft (5) through the fixing hole (7111); and the limiting portion (712) has the first limiting wall (7121) and the second limiting wall (7122).

6. The electric turning mechanism according to claim 5, characterized in that: The second rotating shaft (5) comprises a first shaft portion (51), a fixing portion (52) and a second shaft portion (53) which are sequentially connected along the first direction (X), and the first connecting portion (711) is sleeved and fixed on the fixing portion (52) through the fixing hole (7111); The first direction (X) is perpendicular to the first plane, and along the first direction (X), the orthographic projection of the fixing portion (52) on the first plane is within the range of the orthographic projection of the first axis portion (51) on the first plane, and the orthographic projection of the second axis portion (53) on the first plane is within the range of the orthographic projection of the fixing portion (52) on the first plane.

7. The electric turning mechanism according to claim 6, characterized in that: The fixing hole (7111) is a square fixing hole (7111), and the fixing portion (52) is a square fixing portion (52) that matches the square fixing hole (7111).

8. The electric turning mechanism according to claim 2, characterized in that: The mounting frame (11) comprises a first mounting portion (111), a second mounting portion (112), a second connecting portion (113), a first supporting portion (114) and a second supporting portion (115); two ends of the second connecting portion (113) are respectively connected to the first mounting portion (111) and the second mounting portion (112); the first mounting portion (111) and the second mounting portion (112) are both provided with a first through hole (1111); the first rotating shaft (2) is passed through the first through hole (1111); the first mounting portion (111) and the second mounting portion (112) are both provided with a second through hole (1111); 1112), the second rotating shaft (5) is passed through the second through hole (1112), the first supporting portion (114) is located on the first side of the second rotating shaft (5) and has the first supporting wall (1141), the first supporting portion (114) is connected to the first mounting portion (111) and / or the second mounting portion (112), the second supporting portion (115) is located on the second side of the second rotating shaft (5) and has the second supporting wall (1151), and the second supporting portion (115) is connected to the first mounting portion (111) and / or the second mounting portion (112).

9. The electric turning mechanism according to claim 1, characterized in that: The mounting member (1) further comprises a mounting seat (12), the mounting frame (11) being connected to the mounting seat (12), and the mounting seat (12) being used for being connected to a vehicle body.

10. A seat, characterized in that: It comprises the electric flipping mechanism according to any one of claims 1 to 9, and also comprises a seat body (200), wherein the seat body (200) is connected to the connecting member (3).

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