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 locking mechanism; the rotating shaft is rotationally connected to the mounting piece; the connecting piece is fixedly connected to the rotating shaft; the locking mechanism comprises a first gear, a sleeve, a second gear and a driving assembly, the first gear is fixedly connected to the mounting part, the rotating shaft is arranged on the first gear in a penetrating mode, the sleeve is fixedly connected to the outer wall of the rotating shaft in a sleeving mode, the second gear is slidably connected to the outer wall of the sleeve, and the driving assembly is fixedly connected to the second gear. The driving assembly is connected to the second gear; compared with a traditional locking mode that a lock hook and a pawl abut against each other, the locking mechanism of the turnover device can provide stronger locking force by means of the locking mode that the first gear and the second gear are meshed with each other, and therefore the seat body can be better prevented from rotating under the unexpected condition, and the safety and reliability of the seat can be better improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially is involved in a kind of turnover device and seat. BACKGROUND

[0002] In current automobile consumption market, the demand of consumer to automobile interior space is increasing, not only expect automobile seat to satisfy basic riding demand, more request it to have folding turnover function, to improve the flexibility and availability of in-car space in this way;The folding turnover function of seat is realized by using turnover device in prior art, and the locking mechanism of turnover device is used to firmly lock the seat body to prevent the rotation of seat body under unexpected circumstances.

[0003] The locking mechanism of existing turnover device is usually composed of shell, cover plate, lock hook, pawl, first pivot, second pivot, lock hook torsion spring and pawl torsion spring;The shell and cover plate cooperate to form a containing cavity, and the above-mentioned lock hook, pawl and other components are arranged in the containing cavity;Specific connection mode is that the lock hook is rotatably connected with the shell through the first pivot, and the pawl is rotatably connected with the shell through the second pivot;The pawl is provided with a pawl torsion spring, which promotes the rotation of the pawl in the counterclockwise direction;The lock hook is also provided with a lock hook torsion spring, which promotes the rotation of the lock hook in the clockwise direction;When the locking mechanism is in the locked state, the lock hook and the pawl are arranged in the clockwise direction in sequence, and the pawl abuts against the lock hook to limit the rotation of the lock hook to achieve the locking purpose;When the locking mechanism is in the unlocked state, the pawl is rotated in the clockwise direction by overcoming the elastic force of the pawl torsion spring through external force, and the pawl is separated from the lock hook to release the limitation of the lock hook, and the lock hook is rotated in the clockwise direction under the action of the elastic force of the lock hook torsion spring to achieve the unlocking purpose;However, when the locking mechanism is in the locked state, if the lock hook is impacted in the counterclockwise direction, the lock hook will transmit the impact to the pawl, which will cause the pawl to overcome the spring force in the counterclockwise direction and move in the clockwise direction, resulting in the separation of the pawl and the lock hook, and thus the pawl cannot continue to limit the movement of the lock hook, causing the rapid rotation of the lock hook under the action of the spring force in the clockwise direction, and finally leading to the automatic unlocking of the locking mechanism, which will cause the rotation of the seat body under unexpected circumstances, affecting the safety and reliability of the seat. SUMMARY

[0004] To solve at least one of the technical problems existing in the prior art, the utility model aims to provide a turnover device and a seat with the turnover device, which can better prevent the rotation of the seat body under unexpected circumstances and improve the safety and reliability of the seat.

[0005] In order to achieve the above object, the utility model provides a kind of turnover device, including mounting, pivot, connecting piece and locking mechanism;The pivot has first axis, the pivot is rotatably connected to the mounting and can rotate around the first axis;The connecting piece is fixedly connected to the pivot and is used to connect seat body, the connecting piece is located in one side of the mounting;The locking mechanism includes first gear, sleeve, second gear and drive assembly, the first gear is fixedly connected to the mounting and is located between the mounting and the connecting piece, the pivot is arranged in the first gear, the sleeve is fixedly sleeved on the outer wall of the pivot and can rotate along with the pivot, the sleeve is located between the first gear and the connecting piece, the second gear is slidably connected to the outer wall of the sleeve and can rotate along with the sleeve, the drive assembly is connected to the second gear;Wherein, the drive assembly can drive the second gear to slide along the sleeve, to make the second gear close to the first gear and mesh with the first gear, or make the second gear away from the first gear and disengage from the first gear.

[0006] In some embodiments, one end face of the first gear towards the second gear has a plurality of first tooth portions distributed around the first axis, a first tooth groove is formed between adjacent two first tooth portions, one end face of the second gear towards the first gear has a plurality of second tooth portions distributed around the first axis, the second tooth portions are used for embedding the first tooth groove, a second tooth groove for embedding the first tooth portion is formed between adjacent two second tooth portions.

[0007] In some embodiments, the outer wall of the sleeve is provided with a guide sliding key;The second gear has a through mounting hole, and a sliding groove for slidingly cooperating with the guide sliding key is recessed on the hole wall of the mounting hole.

[0008] In some embodiments, the drive assembly includes a knob, a connecting shaft, a pull wire, a drive motor and a first elastic member, the knob is rotatably connected to the sleeve through the connecting shaft, one end of the knob abuts against the second gear, and the other end is fixedly connected with the pull wire, and the end of the pull wire away from the knob is connected to the drive motor;The two ends of the first elastic member are connected with the first gear and the second gear respectively;Wherein, the drive motor can tighten the pull wire, to drive the knob to rotate around the connecting shaft through the pull wire, so that the knob can drive the second gear to slide along the sleeve and close to the first gear;The drive motor can loosen the pull wire, so that the first elastic member can drive the second gear to slide along the sleeve and away from the first gear.

[0009] In some embodiments, the number of connecting shafts is two; the toggle member comprises a connecting portion and two toggle portions, the sleeve is located between the two toggle portions, one of the toggle portions is rotationally connected to the sleeve by one of the connecting shafts, the pull wire is fixedly connected to the connecting portion, and the two ends of the connecting portion are fixedly connected to the two toggle portions respectively, and the end of the toggle portion away from the connecting portion abuts against the second gear.

[0010] In some embodiments, the drive assembly further comprises a buckle member and a protective sleeve, the buckle member is fixedly connected to the connecting member, one end of the protective sleeve is buckled to the buckle member, and the other end of the protective sleeve is fixedly connected to the drive motor, and the pull wire is arranged in the protective sleeve.

[0011] In some embodiments, the end of the second gear away from the first gear is recessed to be provided with a mounting groove, and the end of the first elastic member extends into the mounting groove and is connected to the groove wall of the mounting groove.

[0012] In some embodiments, the number of mounting grooves is multiple, the mounting grooves are distributed around the first axis, the number of first elastic members is multiple, and one of the first elastic members is connected to one of the mounting grooves.

[0013] In some embodiments, the drive assembly comprises a toggle member, a connecting shaft, a pull wire, a drive motor, a second elastic member and a limiting member, the limiting member is fixedly connected to the outer wall of the sleeve and located between the second gear and the connecting member, the toggle member is hingedly connected to the second gear by the connecting shaft, the second elastic member is sleeved on the sleeve and located between the second gear and the limiting member, the two ends of the second elastic member are connected to the second gear and the limiting member respectively, one end of the pull wire is fixedly connected to the toggle member, and the other end of the pull wire is connected to the drive motor; wherein the drive motor can tighten the pull wire, so as to drive the toggle member to pull the second gear to slide along the sleeve and away from the first gear through the pull wire; the drive motor can loosen the pull wire, so that the second elastic member can drive the second gear to slide along the sleeve and close to the first gear.

[0014] In some embodiments, the turnover device further comprises a turnover motor, the turnover motor is connected to the rotating shaft and can drive the rotating shaft to rotate around the first axis.

[0015] The utility model also provides a seat, the seat comprises the turnover device according to any one of the above, still includes seat body, the connecting member is fixedly connected to the seat body.

[0016] The utility model discloses a kind of turnover devices compared with prior art, its beneficial effect is in at:(1), since first gear is fixedly connected in mounting piece, first gear is fixedly unmoved relative to mounting piece;Since sleeve sleeve is fixed in rotating shaft and can follow rotating shaft movement, sleeve is locked and cannot rotate, which causes rotating shaft also cannot rotate;Since second gear is slidably connected on the outer wall of sleeve and can follow sleeve movement, second gear is locked and cannot rotate, which causes sleeve also cannot rotate, i.e., rotating shaft, sleeve and second gear can synchronous rotation or synchronous locking;When needing to lock seat body, second gear is driven along sleeve to approach first gear and engage with first gear by driving assembly, rotation of second gear is limited by the engagement between first gear and second gear, to limit rotation of sleeve and rotating shaft, further limit connecting piece to drive seat body rotation, realize the locking of seat body, reach the purpose that prevent seat body from rotating in non-expected condition;When needing to unlock seat body, second gear is driven along sleeve to be away from first gear and disengage with first gear by driving assembly, so that second gear can rotate, so that sleeve and rotating shaft can rotate, further make connecting piece can drive seat body rotation, realize the unlocking of seat body, so that seat body can rotate in expected condition;Therefore, the turnover device provided by the utility model can realize the locking and unlocking of seat body by first gear, sleeve, second gear and driving assembly, simple structure, less parts, simple assembly.

[0017] (2), the locking mechanism of the turnover device provided by the utility model relies on the locking mode of mutual engagement between first gear and second gear, compared with the locking mode of mutual resistance of traditional lock hook and pawl, can provide stronger locking force, to better prevent seat body from rotating in non-expected condition, help to improve the safety and reliability of seat. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of a kind of turnover device provided by the utility model embodiment one;

[0019] Figure 2 It is the side view of a kind of turnover device provided by the utility model embodiment one;

[0020] Figure 3 It is the explosion view of a kind of turnover device provided by the utility model embodiment one;

[0021] Figure 4 It is the structure schematic view of first gear provided by the utility model embodiment one;

[0022] Figure 5 It is the structure schematic view of sleeve provided by the utility model embodiment one;

[0023] Figure 6 is a structural schematic view of the second gear provided by the embodiment one of the utility model;

[0024] Figure 7 is an assembly drawing of the driving part and the connecting shaft provided by the embodiment one of the utility model;

[0025] Figure 8 is a structural schematic view of a turnover device provided by the embodiment two of the utility model;

[0026] Figure 9 is a side view of a turnover device provided by the embodiment two of the utility model;

[0027] Figure 10 is an exploded view of a turnover device provided by the embodiment two of the utility model;

[0028] Figure 11 is a connecting schematic view of the sleeve and the limiting part provided by the embodiment two of the utility model;

[0029] Figure 12 is a structural schematic view of a seat provided by the embodiment three of the utility model.

[0030] In the drawing, 100, turnover device;

[0031] 1, mounting part;

[0032] 2, connecting part;

[0033] 3, locking mechanism; 31, first gear; 32, sleeve; 33, second gear; 34, driving assembly; 311, first tooth part; 312, first tooth groove; 321, guide sliding key; 331, second tooth part; 332, second tooth groove; 333, mounting hole; 334, sliding slot; 335, mounting slot; 341, driving part; 342, connecting shaft; 343, pull wire; 344, driving motor; 345, first elastic part; 346, buckle part; 347, protective sleeve; 348, limiting part; 349, second elastic part; 3411, driving part; 3412, connecting part;

[0034] 4, turnover motor;

[0035] 5, rotating shaft;

[0036] 200, seat body; 201, seat cushion; 202, backrest. DETAILED DESCRIPTION

[0037] The specific implementation of the utility model will be described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0038] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply 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 utility model.

[0039] The terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features.

[0040] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0043] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0044] Example 1

[0045] like Figures 1-7 As shown, the first embodiment of this utility model provides a flipping device 100, which includes a mounting component 1, a rotating shaft 5, a connecting component 2, and a locking mechanism 3.

[0046] The rotating shaft 5 has a first axis, and the rotating shaft 5 is rotatably connected to the mounting part 1 and can rotate about the first axis.

[0047] The connector 2 is fixedly connected to the pivot 5 and is used to connect the seat body 200. The connector 2 is located on one side of the mounting part 1.

[0048] The locking mechanism 3 includes a first gear 31, a sleeve 32, a second gear 33, and a drive assembly 34. The first gear 31 is fixedly connected to the mounting member 1 and located between the mounting member 1 and the connecting member 2. The rotating shaft 5 passes through the first gear 31. The sleeve 32 is sleeved and fixed on the outer wall of the rotating shaft 5 and can rotate with the rotating shaft 5. The sleeve 32 is located between the first gear 31 and the connecting member 2. The second gear 33 is slidably connected to the outer wall of the sleeve 32 and can rotate with the sleeve 32. The drive assembly 34 is connected to the second gear 33. The drive assembly 34 can drive the second gear 33 to slide along the sleeve 32, so that the second gear 33 approaches the first gear 31 and meshes with the first gear 31, or moves the second gear 33 away from the first gear 31 and disengages from the first gear 31.

[0049] According to the technical scheme, the first gear 31 is fixedly connected to the mounting piece 1, so the first gear 31 is fixed relative to the mounting piece 1; the sleeve 32 is sleeved and fixed to the rotating shaft 5 and can move along with the rotating shaft 5, so the sleeve 32 is locked and cannot rotate, which causes the rotating shaft 5 to also be unable to rotate; the second gear 33 is slidingly connected to the outer wall of the sleeve 32 and can rotate along with the sleeve 32, so the second gear 33 is locked and cannot rotate, which causes the sleeve 32 to also be unable to rotate, that is, the rotating shaft 5, the sleeve 32 and the second gear 33 can synchronously rotate or be synchronously locked; when it is required to lock the seat body 200, the second gear 33 is driven by the driving assembly 34 to move along the sleeve 32 to be close to the first gear 31 and to be engaged with the first gear 31, the second gear 33 is limited to rotate by the engagement between the first gear 31 and the second gear 33, so the sleeve 32 and the rotating shaft 5 are limited to rotate, and then the connecting piece 2 drives the seat body 200 to rotate, the locking of the seat body 200 is realized, and the purpose of preventing the seat body 200 from rotating in an unintended situation is achieved; when it is required to unlock the seat body 200, the second gear 33 is driven by the driving assembly 34 to move along the sleeve 32 to be away from the first gear 31 and to be disengaged from the first gear 31, so the second gear 33 can rotate, the sleeve 32 and the rotating shaft 5 can rotate, and then the connecting piece 2 can drive the seat body 200 to rotate, the unlocking of the seat body 200 is realized, and the seat body 200 can rotate in an intended situation; therefore, the overturning device 100 provided by the utility model can realize the locking and unlocking of the seat body 200 by the first gear 31, the sleeve 32, the second gear 33 and the driving assembly 34, the structure is simple, the parts are few, and the assembly is simple.

[0050] The locking mechanism 3 of the overturning device provided by the utility model relies on the locking mode of the mutual engagement between the first gear 31 and the second gear 33, compared with the locking mode that the traditional lock hook and the pawl are mutually resisted, can provide stronger locking force, so that the rotation of the seat body in an unintended situation can be better prevented, and the safety and reliability of the seat can be improved.

[0051] The first axis is the central axis of the rotating shaft 5. The mounting piece 1 is used for being fixedly connected to the vehicle body of a vehicle.

[0052] Referring to Figures 1-3 The overturning device 100 further comprises an overturning motor 4, the overturning motor 4 is connected to the rotating shaft 5 and can drive the rotating shaft 5 to rotate around the first axis. The overturning motor 4 can realize the automatic overturning of the overturning device 100, and the use is convenient.

[0053] Referring to Figure 1 Fig. and Figure 6The one end surface of the first gear 31 towards the second gear 33 is provided with a plurality of first tooth portions 311 distributed around the first axis, and a first tooth groove 312 is formed between two adjacent first tooth portions 311. The one end surface of the second gear 33 towards the first gear 31 is provided with a plurality of second tooth portions 331 distributed around the first axis, and the second tooth portions 331 are used to be embedded in the first tooth grooves 312. A second tooth groove 332 for embedding the first tooth portions 311 is formed between two adjacent second tooth portions 331.

[0054] By setting the plurality of first tooth portions 311 on the one end surface of the first gear 31 towards the second gear 33 and the plurality of second tooth portions 331 on the one end surface of the second gear 33 towards the first gear 31, when the second tooth portions 331 are embedded in the first tooth grooves 312 and the first tooth portions 311 are embedded in the second tooth grooves 332, the mutual embedding between the plurality of first gears 31 and the plurality of second gears 33 is tight and comprehensive. Compared with the common gear meshing mode, this meshing mode increases the contact area and frictional force. This makes it difficult for the relative displacement between the first gear 31 and the second gear 33 to increase when the seat body 200 bears various external forces in various directions, thereby helping to further prevent the seat body 200 from rotating in an unintended situation and providing more reliable locking protection for the seat body 200.

[0055] By setting the plurality of first tooth portions 311, the plurality of first tooth grooves 312, the plurality of second tooth portions 331 and the plurality of second tooth grooves 332 distributed around the first axis, the turnover device 100 can adapt to different use scenarios of different seats. Because the number of tooth portions and tooth grooves is large, a plurality of different meshing position combinations can be provided. In actual application, the locking angle and position of the seat can be flexibly adjusted according to the size, weight and turnover requirement of different vehicle seats, thereby improving the universality and adaptability of the turnover device 100.

[0056] Referring to Figures 1-3 , and Figures 5-6 The outer wall of the sleeve 32 is provided with a guide sliding key 321. The second gear 33 has a through mounting hole 333, and the hole wall of the center hole is recessed to be provided with a sliding groove 334 slidingly matched with the guide sliding key 321.

[0057] By setting the guide sliding key 321 on the sleeve 32 and the sliding groove 334 on the second gear 33, the second gear 33 can slide along the sleeve 32 and rotate with the sleeve 32.

[0058] The guide sliding key 321 can provide accurate guidance for the movement of the second gear 33 through the sliding fit of the guide sliding key 321 and the sliding groove 334 of the second gear 33. When the driving assembly 34 drives the second gear 33 to move along the sleeve 32, the guide sliding key 321 slides in the sliding groove 334, strictly limiting the movement trajectory of the second gear 33, so that the second gear 33 can only move smoothly in the preset direction, avoiding unstable conditions such as deviation and shaking of the second gear 33 during movement, ensuring the accurate meshing of the second gear 33 and the first gear 31, so that the action of the entire locking mechanism 3 is more reliable, and the stability and smoothness of the seat turnover device 100 during operation are improved.

[0059] Optionally, the number of guide sliding keys 321 is one or more, and the number of sliding grooves 334 is one or more. One guide sliding key 321 and one sliding groove 334 are in sliding fit.

[0060] Preferably, the number of guide sliding keys 321 is multiple, and the multiple guide sliding keys 321 are uniformly distributed around the first axis, and the number of sliding grooves 334 is multiple.

[0061] In this embodiment, the number of guide sliding keys 321 is six, and the six guide sliding keys 321 are uniformly distributed around the first axis, and the number of sliding grooves 334 is six.

[0062] Referring to Figures 1-3 , and Figure 7 , in this embodiment, the driving assembly 34 includes a push piece 341, a connecting shaft 342, a pull wire 343, a driving motor 344, and a first elastic member 345. The push piece 341 is rotationally connected to the sleeve 32 through the connecting shaft 342. One end of the push piece 341 abuts against the second gear 33, and the other end is fixedly connected with the pull wire 343. The end of the pull wire 343 away from the push piece 341 is connected to the driving motor 344. The two ends of the first elastic member 345 are connected with the first gear 31 and the second gear 33, respectively. The driving motor 344 can tighten the pull wire 343 to drive the push piece 341 to rotate around the connecting shaft 342 through the pull wire 343, so that the push piece 341 can drive the second gear 33 to slide along the sleeve 32 and approach the first gear 31. The driving motor 344 can loosen the pull wire 343, so that the first elastic member 345 can drive the second gear 33 to slide along the sleeve 32 and away from the first gear 31.

[0063] In this embodiment, the driving assembly 34 is a normally open type driving assembly. When the driving motor 344 of the driving assembly 34 does not tighten the pull wire 343, the first elastic member 345 of the driving assembly 34 keeps the second gear 33 and the first gear 31 in a separated state.

[0064] In other embodiments, the driving assembly 34 can also be a device that can realize the function of driving the second gear 33 to slide along the sleeve 32, including but not limited to a linear module, an electric cylinder, a pneumatic cylinder, etc.

[0065] In the first embodiment, the first elastic member 345 is a compression spring.

[0066] In other embodiments, the first elastic member 345 can also be a first elastic member 345 that can be used to drive the second gear 33 to slide along the sleeve 32 and away from the first gear 31, including but not limited to a telescopic spring, a tension spring, a pressure spring, etc., and other first elastic members 345 that can realize this function should also be considered within the protection scope of the present application.

[0067] The number of connecting shafts 342 is two;

[0068] The pulling element 341 includes a connecting portion 3412 and two pulling portions 3411, the sleeve 32 is located between the two pulling portions 3411, one pulling portion 3411 is rotationally connected to the sleeve 32 through one connecting shaft 342, the pulling wire 343 and the connecting portion 3412 are fixedly connected, the two ends of the connecting portion 3412 are fixedly connected to the two pulling portions 3411 respectively, and the end of the pulling portion 3411 away from the connecting portion 3412 abuts against the second gear 33.

[0069] By arranging two connecting shafts 342, arranging the sleeve 32 between the two pulling portions 3411, and arranging each pulling portion 3411 to be rotationally connected to the sleeve 32 through one connecting shaft 342, this structure can provide more stable support to the pulling element 341 during rotation. Compared with a single connecting shaft 342, two connecting shafts 342 can prevent the pulling element 341 from tilting or shaking when subjected to force, ensure that the pulling element 341 always rotates along a predetermined track, and thus provide stable and accurate driving force to the second gear 33, effectively guaranteeing the accuracy and stability of the meshing and disengaging actions of the second gear 33 and the first gear 31, and improving the reliability of the entire seat turnover device 100 during operation.

[0070] In the first embodiment, the connecting shaft 342 is a stepped bolt.

[0071] In other embodiments, the connecting shaft 342 can be a cylindrical bolt, a pin, a cylindrical shaft, a hollow shaft, a spline shaft, etc.

[0072] The driving assembly 34 further comprises a buckle member 346 and a protective sleeve 347, the buckle member 346 is fixedly connected to the connecting member 2, one end of the protective sleeve 347 is buckled to the buckle member 346, and the other end of the protective sleeve 347 is fixedly connected to the driving motor 344, and the pull wire 343 is arranged in the protective sleeve 347. The protective sleeve 347 can protect the pull wire 343, reduce the direct contact between the pull wire 343 and the surrounding components, reduce the wear of the pull wire 343 caused by friction, prolong the service life of the pull wire 343, and ensure the stability and reliability of the power transmission of the driving assembly 34.

[0073] By arranging the buckle member 346 and buckling one end of the protective sleeve 347 to the buckle member 346, the position of the protective sleeve 347 can be limited, so that the protective sleeve 347 can be limited in the predetermined space range during the overturning process of the seat body 200, thereby helping to avoid interference between the protective sleeve 347 and the surrounding components during the overturning process of the seat body 200.

[0074] One end of the second gear 33 facing the first gear 31 is recessed in a direction away from the first gear 31 and provided with a mounting groove 335, and one end of the first elastic member 345 extends into the mounting groove 335 and is connected with the groove wall of the mounting groove 335. By arranging the mounting groove 335 on the second gear 33, the mounting groove 335 can provide a precise and stable mounting position for the first elastic member 345; by arranging the first elastic member 345 in the mounting groove 335 and connecting it with the groove wall, the close cooperation can enhance the connection strength between the first elastic member 345 and the second gear 33, avoid displacement or falling of the first elastic member 345 under stress, and ensure that the first elastic member 345 always works stably.

[0075] The number of mounting grooves 335 is multiple, the multiple mounting grooves 335 are distributed around the first axis, the number of first elastic members 345 is multiple, and one first elastic member 345 is connected with one mounting groove 335. By arranging multiple mounting grooves 335 distributed around the first axis, and connecting one first elastic member 345 with one mounting groove 335, the elastic force can act on the second gear 33 more uniformly; when the second gear 33 slides along the sleeve 32 under the action of the driving assembly 34, multiple first elastic members 345 work cooperatively to provide stable force to the second gear 33 from multiple positions. This uniform force distribution can avoid the inclination or movement deviation of the second gear 33 caused by uneven stress of a single first elastic member 345, ensure that the second gear 33 always keeps stable during movement, and thus make the meshing and disengaging actions of the second gear 33 and the first gear 31 more accurate and reliable, and improve the working stability and accuracy of the entire locking mechanism 3.

[0076] Through the one-to-one connection of the plurality of first elastic members 345 and the plurality of mounting grooves 335, the connection stability between the second gear 33 and the first elastic member 345 can be enhanced; in the process of frequent work of the turnover device 100, a single first elastic member 345 may be damaged or its performance may be degraded due to bearing too much force or long-term fatigue; while the plurality of first elastic members 345 act simultaneously, not only the stress is dispersed, but also when a certain first elastic member 345 fails, other first elastic members 345 can still maintain the function, so that the locking mechanism 3 will not fail due to the problem of individual first elastic members 345, greatly improving the stability and reliability of the entire turnover device 100 under complex working conditions, and reducing the risk of equipment failure.

[0077] Embodiment Two

[0078] Reference Figures 8-11 Unlike embodiment one, the driving assembly 34 provided by embodiment two is a normally closed driving assembly. Specifically, the normally closed driving assembly comprises a toggle member 341, a connecting shaft 342, a pull wire 343, a driving motor 344, a second elastic member 349, and a limiting member 348. The limiting member 348 is fixedly connected to the outer wall of the sleeve 32 and located between the second gear 33 and the connecting member 2. The toggle member 341 is hingedly connected to the second gear 33 through the connecting shaft 342. The second elastic member 349 is sleeved on the sleeve 32 and located between the second gear 33 and the limiting member 348. The two ends of the second elastic member 349 are respectively connected to the second gear 33 and the limiting member 348. One end of the pull wire 343 is fixedly connected to the toggle member 341, and the other end is connected to the driving motor 344. The driving motor 344 can tighten the pull wire 343 to drive the toggle member 341 to pull the second gear 33 to slide along the sleeve 32 and away from the first gear 31 through the pull wire 343. The driving motor 344 can loosen the pull wire 343, so that the second elastic member 349 can drive the second gear 33 to slide along the sleeve 32 and approach the first gear 31.

[0079] In this embodiment two, the driving assembly 34 is a normally closed driving assembly. When the driving motor 344 of the driving assembly 34 does not tighten the pull wire 343, the second elastic member 349 of the driving assembly 34 keeps the second gear 33 and the first gear 31 in the meshing state.

[0080] In this embodiment three, the limiting member 348 is integrally formed on the outer wall of the sleeve 32.

[0081] In other embodiments, the limiting member 348 can also be fixedly connected to the outer wall of the sleeve 32 by any connection method such as welding, screw connection, pin connection, etc.

[0082] In this embodiment three, the limiting member 348 has a circular ring structure.

[0083] In the third embodiment, the toggle member 341 comprises a connecting portion 3412 and two toggle portions 3411, the second gear 33 is located between the two toggle portions 3411, one toggle portion 3411 is hinged to the second gear through a connecting shaft 342, the pull wire 343 and the connecting portion 3412 are fixedly connected, and two ends of the connecting portion 3412 are fixedly connected with the two toggle portions 3411 respectively.

[0084] Embodiment three

[0085] Referring to Figure 12 The third embodiment of the utility model also provides a seat, the seat comprises the turnover device 100 of any one of the above, further comprising a seat body 200, the connecting piece 2 is fixedly connected to the seat body 200.

[0086] The seat body 200 comprises a seat cushion 201 and a backrest 202, and the backrest 202 is rotationally connected to the seat cushion 201.

[0087] In the third embodiment, the connecting piece 2 is fixedly connected to the backrest 202.

[0088] The above only is the preferred embodiment of the utility model, it should be pointed out, for the ordinary skilled person in the prior art, on the premise of not departing from the technical principle of the utility model, can also make a number of improvements and substitutions, these improvements and substitutions also should be regarded as the protection range of the utility model.

Claims

1. A turnover device (100), characterized in that The utility model relates to a seat locking mechanism, including: mount (1); Rotary shaft (5) have first axis, rotary shaft (5) are rotatably connected to mount (1) and can rotate around first axis; Connecting piece (2) are fixedly connected to rotary shaft (5) and are used for connecting seat body (200), connecting piece (2) are located one side of mount (1); Locking mechanism (3) include first gear (31), sleeve (32), second gear (33) and drive assembly (34), first gear (31) are fixedly connected to mount (1) and are located between mount (1) and connecting piece (2), rotary shaft (5) are arranged in first gear (31), sleeve (32) are fixedly sleeved on the outer wall of rotary shaft (5) and can rotate along with rotary shaft (5), sleeve (32) are located between first gear (31) and connecting piece (2), second gear (33) are slidably connected on the outer wall of sleeve (32) and can rotate along with sleeve (32), drive assembly (34) are connected to second gear (33); Wherein, drive assembly (34) can drive second gear (33) along sleeve (32) and slide, so that second gear (33) is close to first gear (31) and is engaged with first gear (31), or make second gear (33) away from first gear (31) and disengage with first gear (31).

2. The turnover device (100) according to claim 1, characterized in that The end face of first gear (31) towards second gear (33) has a plurality of first tooth parts (311) distributed around first axis, first tooth groove (312) is formed between adjacent two first tooth parts (311), the end face of second gear (33) towards first gear (31) has a plurality of second tooth parts (331) distributed around first axis, second tooth part (331) is used for embedding first tooth groove (312), second tooth groove (332) for embedding first tooth part (311) is formed between adjacent two second tooth parts (331).

3. The turnover device (100) according to claim 1, characterized in that The outer wall of sleeve (32) is provided with guide sliding key (321); Second gear (33) has mounting hole (333) through, and the hole wall of mounting hole (333) is recessed and is provided with sliding groove (334) slidingly matched with guide sliding key (321).

4. The turnover device (100) according to claim 1, characterized in that Drive assembly (34) includes knob (341), connecting shaft (342), pull wire (343), drive motor (344) and first elastic member (345), knob (341) is rotatably connected to sleeve (32) through connecting shaft (342), one end of knob (341) is abutted on second gear (33), the other end is fixedly connected with pull wire (343), one end of pull wire (343) away from knob (341) is connected to drive motor (344); Two ends of the first elastic member (345) are connected with the first gear (31) and the second gear (33) respectively; The driving motor (344) can tighten the pull wire (343) to drive the poking member (341) to rotate around the connecting shaft (342) through the pull wire (343), so that the poking member (341) can drive the second gear (33) to slide along the sleeve (32) and approach the first gear (31); the driving motor (344) can loosen the pull wire (343), so that the first elastic member (345) can drive the second gear (33) to slide along the sleeve (32) and move away from the first gear (31).

5. The turnover device (100) according to claim 4, characterized in that The number of the connecting shafts (342) is two; The poking member (341) comprises a connecting part (3412) and two poking parts (3411), the sleeve (32) is located between the two poking parts (3411), one of the poking parts (3411) is rotationally connected to the sleeve (32) through one of the connecting shafts (342), the pull wire (343) and the connecting part (3412) are fixedly connected, two ends of the connecting part (3412) are fixedly connected with the two poking parts (3411) respectively, and one end of the poking part (3411) away from the connecting part (3412) abuts against the second gear (33).

6. The turnover device (100) according to claim 4, characterized in that One end of the second gear (33) away from the first gear (31) is recessed and provided with a mounting groove (335), one end of the first elastic member (345) extends into the mounting groove (335) and is connected with a groove wall of the mounting groove (335); The number of the mounting grooves (335) is multiple, the mounting grooves (335) are distributed around the first axis, and the number of the first elastic members (345) is multiple, one of the first elastic members (345) is connected with one of the mounting grooves (335) correspondingly.

7. The turnover device (100) according to claim 1, characterized in that The driving assembly (34) comprises a poking member (341), a connecting shaft (342), a pull wire (343), a driving motor (344), a second elastic member (349) and a limiting member (348), the limiting member (348) is fixedly connected to an outer wall of the sleeve (32) and located between the second gear (33) and the connecting member (2), the poking member (341) is hingedly connected to the second gear (33) through the connecting shaft (342), the second elastic member (349) is sleeved on the sleeve (32) and located between the second gear (33) and the limiting member (348), two ends of the second elastic member (349) are connected with the second gear (33) and the limiting member (348) respectively, one end of the pull wire (343) is fixedly connected with the poking member (341), and the other end is connected with the driving motor (344); The driving motor (344) can tighten the pull wire (343) to drive the puller (341) to pull the second gear (33) to slide along the sleeve (32) and away from the first gear (31) through the pull wire (343); the driving motor (344) can loosen the pull wire (343) to enable the second elastic member (349) to drive the second gear (33) to slide along the sleeve (32) and close to the first gear (31).

8. Turnover device (100) according to any one of claims 4-7, characterized in that The driving assembly (34) further comprises a buckle member (346) and a protective sleeve (347), the buckle member (346) is fixedly connected to the connecting member (2), one end of the protective sleeve (347) is buckled to the buckle member (346), and the other end is fixedly connected to the driving motor (344), and the pull wire (343) is arranged in the protective sleeve (347).

9. The turnover device (100) according to claim 1, characterized in that The device further comprises a turnover motor (4) connected to the rotating shaft (5) and capable of driving the rotating shaft (5) to rotate around the first axis.

10. A seat, characterized by The device further comprises a seat body (200), and the connecting member (2) is fixedly connected to the seat body (200).

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