Folding locking structure for seat, seat and vehicle

Abstract

The invention discloses a turnover locking structure for a seat, the seat with the turnover locking structure and a vehicle, the turnover locking structure comprises a mounting seat, a transmission part and a retainer, and the transmission part is hinged to the mounting seat and used for being connected with a part to be turned over; a first clamping groove and a second clamping groove are formed in the outer edge of the transmission part in the circumferential direction of the hinged end of the transmission part and the mounting base, are arranged at intervals in the circumferential direction of the hinged end and are concave inwards in the radial direction of the hinged end; the retainer is movably connected to the mounting seat and has a first closer position and a second farther position relative to the transmission part, and when the first clamping groove or the second clamping groove of the transmission part rotates to face the retainer, the retainer can move between the first position and the second position so as to be clamped to the corresponding clamping groove to limit rotation of the transmission part. Or the transmission part is separated from the corresponding clamping groove, so that the transmission part can rotate relative to the mounting seat. The folding locking structure is convenient to operate, firm in connection after locking, stable in structure and capable of effectively preventing shaking and abnormal sound of the part to be folded.

Description

Technical Field

[0001] The present application relates to the technical field of seat components, and in particular to a folding and locking structure for a seat, a seat and a vehicle. Background Art

[0002] The seat cushion of a seat usually has a folding function. Before folding, it is horizontal for users to sit on. After folding, it is vertical or leaning against the seat back so that it can be folded with the seat back for storage. It is widely used on seats of various vehicles. The traditional folding method usually hinges the seat cushion with the seat base. Although it is easy to operate, the seat cushion is movable relative to the base or backrest in the horizontal or folded position, and is easy to shake when the user sits or stores it.

[0003] In this regard, the related art designs a lock bolt at the bottom of the front end of the seat cushion, and the base has a structural lock, so that the seat cushion can be locked with the base in a horizontal state to prevent shaking when the user sits; when folding, the lock bolt needs to be separated from the structural lock, and then the seat cushion needs to be lifted and folded toward the backrest. In this case, the seat cushion in the folded position is still movable relative to the base and the backrest, and often produces abnormal noises due to shaking when moving in vehicles such as vehicles, affecting the riding experience. The related art is to fix the folded seat cushion by stretching an elastic strap arranged under the seat cushion and hooking it on the headrest rod to achieve fixation. This fixing solution is not only inconvenient to operate, but also has a poor appearance, which seriously affects the user experience. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide a folding and locking structure for a seat, a seat and a vehicle, which can lock the folding member after it is folded, effectively preventing it from shaking and making abnormal noises.

[0005] According to one aspect of the embodiment of the present application, a folding locking structure for a seat is provided, comprising: a mounting seat; a transmission member for connecting a to-be-folded member; the transmission member is hinged to the mounting seat, with the hinged end of the transmission member and the mounting seat as the first hinged portion, and a first clamping groove and a second clamping groove are provided on the outer edge of the transmission member along the circumference of the first hinged portion; the first clamping groove and the second clamping groove are arranged at intervals in the circumference of the first hinged portion and are concave in the radial direction of the first hinged portion; and a stopper, which is movably connected to the mounting seat and has a first position and a second position relative to the transmission member, and the first position is arranged closer to the first hinged portion than the second position in the first direction; the first direction is perpendicular to the axial direction of the first hinged portion; the stopper is configured to be able to move between the first position and the second position along a preset direction when the transmission member rotates around the first hinged portion until the first clamping groove or the second clamping groove faces the stopper; wherein, when the stopper is at the first position, it can be clamped in the first clamping groove or the second clamping groove; when the stopper is at the second position, it can be disengaged from the corresponding clamping groove, so that the transmission member can rotate relative to the mounting seat.

[0006] In an exemplary embodiment of the present application, an elastic member is further included, wherein two active ends of the elastic member are respectively connected to the stop member and the mounting seat, and are configured to reset the stop member to the first position.

[0007] In an exemplary embodiment of the present application, the stop member includes a locking portion and a connecting portion, the locking portion is suitable for being engaged with the transmission member; the connecting portion has a first connecting end, a second connecting end and a third connecting end, the first connecting end is connected to the locking portion, the second connecting end is connected to the elastic member, and the third connecting end is extended to one side of the first connecting end or the second connecting end, and is hinged to the mounting seat.

[0008] In an exemplary embodiment of the present application, the hinged end of the third connecting end and the mounting seat is used as the second hinged part, the axial direction of the second hinged part is parallel to the axial direction of the first hinged part, and the clamping contact part of the stopper and the transmission part is located in the same rotation plane as the first hinged part and the second hinged part.

[0009] In an exemplary embodiment of the present application, the locking portion has a first clamping end and a second clamping end, and the first clamping end is located on a side of the locking portion away from the third connection end, and the second clamping end is located on a side of the locking portion close to the third connection end; the side of the first clamping end away from the second clamping end is constructed as an inclined slope, and the slope is inclined in a first direction toward a side close to the first hinged portion and in a second direction toward a side close to the second hinged portion; wherein the second direction is perpendicular to both the first direction and the axial direction of the first hinged portion.

[0010] In an exemplary embodiment of the present application, a limiting mechanism is also included, which is connected to the mounting seat and has a movable end, and the movable end is connected to the stop member so as to move synchronously with the stop member; the limiting mechanism is configured to have a first state and a second state that can be switched between each other, and the state is switched when the movable end moves to a preset stroke along the first direction; wherein, when the limiting mechanism is in the second state, it can limit the movable end to restrict the stop member connected thereto from moving between the first position and the second position.

[0011] In an exemplary embodiment of the present application, a limiting mechanism includes a slider and a slide rod, a mounting seat is provided with a first slide groove extending along a first direction, the slider is connected to the stopper as a movable end, and is slidably connected to the first slide groove; the slider is provided with a second slide groove, the slide rod has a first end and a second end distributed along the first direction, the first end is hinged to the mounting seat, and the second end is slidably connected to the second slide groove; the second slide groove is formed as an annular closed slide groove, and a first inflection point group, a second inflection point group, a third inflection point group and a fourth inflection point group are sequentially provided along a preset trajectory of the second slide groove, when the second end is located in the first inflection point group, the stopper is located in the first position; when the second end is located in the third inflection point group, the stopper is located in the second position; when the second end is located in the second inflection point group or the fourth inflection point group, the stopper is located in the third position, and the third position is located in the first direction compared to the second The position is set away from the first hinge part; the second slide groove is configured so that when the first force is applied to the slider along the first direction, the second end can slide along the preset trajectory of the second slide groove to the second inflection point group or the fourth inflection point group; when the second force is applied to the slider along the first direction, the second end can slide along the preset trajectory of the second slide groove to the first inflection point group or the third inflection point group; the first force and the second force are in opposite directions in the first direction; wherein, the slide groove section starting from the fourth inflection point group and passing through the first inflection point group to the second inflection point group as the end point is the first trajectory section, and the slide groove section starting from the second inflection point group and passing through the third inflection point group to the fourth inflection point group as the end point is the second trajectory section, when the second end is located in the first trajectory section, the limiting mechanism is in the first state; when the second end is located in the second trajectory section, the limiting mechanism is in the second state.

[0012] In an exemplary embodiment of the present application, the slider is slidably hinged to the stopper; the hinged end of the slider and the stopper is a third hinged portion, and the sliding direction of the third hinged portion does not overlap with the first direction.

[0013] In an exemplary embodiment of the present application, the first end passes through the mounting seat and is bent along the first direction toward the side where the elastic member is located to form a hook portion; the elastic member is a compression spring, one end of the compression spring is sleeved on the end of the stop member away from the transmission member, and the other end of the compression spring is sleeved on the hook portion.

[0014] In an exemplary embodiment of the present application, the first card slot and the second card slot are provided with a flange protruding radially outward along the first hinge portion at a circumferential interval, and the flange is configured so that when the transmission member rotates around the mounting seat, the flange can push the stop member along the first direction and drive the limiting mechanism to switch from the second state to the first state.

[0015] The second aspect of the present application discloses a seat, including a seat cushion body, a seat frame and the above-mentioned folding and locking structure, wherein the mounting seat is connected to the seat frame, and the seat cushion body as a foldable member is connected to a transmission member.

[0016] The third aspect of the present application discloses a seat, including an armrest body, a seat frame and the above-mentioned folding and locking structure, wherein the mounting seat is connected to the seat frame, and the armrest body as a foldable member is connected to a transmission member.

[0017] A fourth aspect of the present application discloses a vehicle comprising the above-mentioned seat.

[0018] The folding locking structure of the present application realizes the flat laying or folding of the part to be folded by hingedly connecting the transmission part to the mounting seat; then a first slot and a second slot are set on the periphery of the hinged end of the transmission part to determine the angles of flat laying and folding, and a stopper is set to be movably connected with the mounting seat accordingly. When the slot of the transmission part is rotated to face the stopper, the stopper can move along a preset direction. In this way, by changing the position of the stopper in the preset direction so that it is engaged in the first slot or the second slot, or disengaged from the corresponding slot, the hinged connection between the transmission part and the mounting seat can be locked or unlocked. Not only is the operation convenient and quick, but the locking part is located on the periphery of the hinged end. After locking, the connection is firm and the structure is stable, which can effectively prevent shaking, abnormal noise and the like.

[0019] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram showing the connection between the folding locking structure and the seat frame according to an embodiment of the present application is shown;

[0022] Figure 2 An exploded view of the folding locking structure according to an embodiment of the present application is shown;

[0023] Figure 3 A schematic diagram showing the connection between the to-be-folded member and the transmission member according to an embodiment of the present application is shown;

[0024] Figure 4 A schematic diagram showing the connection between the stopper, the elastic member, the limiting mechanism and the mounting seat according to the embodiment of the present application is shown;

[0025] Figure 5A schematic diagram showing a state of the folding locking structure according to an embodiment of the present application when the stopper is located at a first position;

[0026] Figure 6 A schematic diagram of the internal structure of the folding locking structure according to an embodiment of the present application when the stopper is located at the first position is shown;

[0027] Figure 7 A schematic diagram showing a state of the folding locking structure according to an embodiment of the present application when the stopper is located at the second position;

[0028] Figure 8 A schematic diagram of the internal structure of the folding locking structure according to the embodiment of the present application when the stopper is located at the second position is shown;

[0029] Fig. 9 A schematic diagram showing the connection between the stopper and the second slot according to an embodiment of the present application is shown;

[0030] Fig.10 A schematic diagram showing the connection between the stopper and the first slot according to an embodiment of the present application is shown;

[0031] Fig.11 A schematic diagram of the structure of the second chute described in an embodiment of the present application is shown;

[0032] Fig.12 A schematic diagram showing the internal structure of the folding locking structure described in the embodiment of the present application when the limiting mechanism is in the second state;

[0033] Fig.13 A schematic diagram of the internal structure of the folding locking structure described in an embodiment of the present application when the stopper is located at the third position is shown.

[0034] Description of Figure Numbers:

[0035] 1-mounting seat, 11-first slide slot,

[0036] 2-transmission member, 21-first hinged part, 211-hinge member 1, 212-hinge member 2, 213-bushing, 22-first slot, 23-second slot, 24-flange,

[0037] 3-stopper, 31-locking part, 311-first clamping end, 3111-inclined surface, 312-second clamping end, 3121-vertical surface, 32-connecting part, 321-first connecting end, 322-second connecting end, 323-third connecting end, 33-second hinged part, 331-hinge part three, 332-hinge part four,

[0038] 4- Elastic parts,

[0039] 5-limiting mechanism, 51-movable end, 52-slider, 521-second slide slot, 522-third hinged portion, 5221-hinge piece five, 5222-hinge piece six, 53-sliding rod, 531-first end, 5311-hook portion, 5312-limiting sleeve, 532-second end, 54-pressing rod,

[0040] A-first inflection point group, A1-first upper inflection point, A2-first lower inflection point, B-second inflection point group, B1-second upper inflection point, B2-second lower inflection point, C-third inflection point group, C1-third upper inflection point, C2-third lower inflection point, D-fourth inflection point group, D1-fourth upper inflection point, D2-fourth lower inflection point,

[0041] 6-part to be folded, 61-fixing part 1, 62-fixing part 2, 7-seat frame.

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0044] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0045] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0046] like Figures 1 to 9As shown, this embodiment provides a folding locking structure for a seat, including a mounting seat 1, a transmission member 2 and a stopper 3, wherein the transmission member 2 is used to connect the to-be-folded member 6, and is hingedly connected to the mounting seat 1 through a hinge 1 211, a hinge 212 and a bushing 213; the hinged end of the transmission member 2 and the mounting seat 1 is a first hinged portion 21, and along the circumference of the first hinged portion 21, a first clamping groove 22 and a second clamping groove 23 of the same shape and size are provided on the outer edge of the transmission member 2, the first clamping groove 22 and the second clamping groove 23 are arranged at intervals in the circumference of the first hinged portion 21, and are concave in the radial direction of the first hinged portion 21; the stopper 3 is movably connected to the mounting seat 1, and has a first position and a second position relative to the mounting seat 1, and the first position In the first direction S1, it is closer to the first hinge part 21 than the second position; wherein the first direction S1 is perpendicular to the axial direction of the first hinge part 21, and is preferably the radial direction of the first hinge part 21; the stop member 3 is configured so that when the transmission member 2 rotates around the first hinge part 21 to the first slot 22 or the second slot 23 toward the stop member 3, the stop member 3 can move between the first position and the second position along a preset direction; wherein when the stop member 3 moves to the first position, it can be engaged in the first slot 22 or the second slot 23 of the transmission member 2 to limit the rotation of the transmission member 2 and the mounting seat 1 at the hinge; when the stop member 3 moves to the second position, it can have no motion interference with the transmission member 2, so that the transmission member 2 can rotate relative to the mounting seat 1. In this way, by moving the stop member 3 along the preset direction and changing the position of the stop member 3 in the first direction S1, so that it is engaged in the first slot 22 or the second slot 23, or disengaged from the corresponding slot, the rotation of the transmission member 2 and the mounting seat 1 at the hinge can be locked or unlocked, which not only improves the convenience and smoothness of the folding and locking operation, but also the radial engaging method ensures a firm connection and a stable structure after locking, which can effectively prevent the occurrence of shaking, abnormal noise and the like.

[0047] For example, Figures 1 to 3 As shown, the foldable member 6 is fixedly connected to the transmission member 2 through the fixing member 1 61 and the fixing member 2 62 so as to move synchronously with the transmission member 2; the transmission member 2 is hinged to the mounting seat 1 in the horizontal direction, and the axial direction of the hinged end of the transmission member 2 and the mounting seat 1 is parallel to the left and right direction of the seat frame 7, so that the transmission member 2 can pivot relative to the mounting seat 1 in the plane formed by the front-to-back direction and the up-and-down direction of the seat frame 7, thereby driving the foldable member 6 to rotate around the first hinge portion 21 along the Figure 1 The device can be turned forward and downward in the direction shown to be laid flat, and can be turned backward and upward around the first hinge 21 to be folded. Figures 5 to 9As shown, in this embodiment, the first direction S1 is the up-down direction, the angle between the first slot 22 and the second slot 23 about the rotation center of the first hinge 21 is slightly greater than 90°, and when the folding member 6 rotates around the first hinge 21 to be in a flat position, the first slot 22 is opened downward, and when the folding member 6 rotates around the first hinge 21 to be in a folding position, the second slot 23 is opened downward; the stopper 3 is located below the first hinge 21, and the first position and the second position are distributed up and down with different heights in the first direction S1, i.e., the up-down direction, and the second position is located below the first position; as shown in FIG. Figure 5 and Figure 6 As shown, the transmission member 2 is rotated around the first hinge portion 21 until the first slot 22 faces the stopper 3. At this time, the foldable member 6 is in a flat position relative to the mounting seat 1. The stopper 3 is moved along the preset direction to the first position to engage with the first slot 22, so that the foldable member 6 can be locked in the flat position. When unlocking is required, Figure 7 and Figure 8 As shown, the stopper 3 is moved in the reverse direction to the second position, and the stopper 3 is disengaged from the first slot 22, and the transmission member 2 can be rotated relative to the mounting seat 1 to realize the folding of the folding member 6; Fig. 9 As shown, when the transmission member 2 is rotated around the first hinged portion 21 until the second clamping groove 23 faces the stopper 3, the to-be-folded member 6 is in the folded position relative to the mounting seat 1, and the stopper 3 is moved along the preset direction to the first position to engage with the second clamping groove 23, so that the to-be-folded member 6 can be locked in the folded position. In other embodiments, the angle between the first clamping groove 22 and the second clamping groove 23 with respect to the rotation center of the first hinged portion 21 can also be set to other angles. By designing the angle between the first clamping groove 22 and the second clamping groove 23 with respect to the rotation center of the first hinged portion 21, the angle of the to-be-folded member 6 lying flat and folding relative to the mounting seat 1 can be determined, and the design can be performed according to the centroid position of the specific structure and the specific structural requirements, which will not be repeated here.

[0048] It can be understood that the stop member 3 can achieve movement along the preset direction through its own structure. For example, the button switch can be configured as the stop member 3 and fixedly installed on the mounting seat 1 or the seat frame 7. A corresponding slide groove or slide rail can also be set on the mounting seat 1 or the seat frame 7 to make the stop member 3 slidably connected to the mounting seat 1 or the seat frame 7. In this way, the preset direction can be the first direction S1. By applying external force to the stop member 3, it can achieve its up and down movement along the preset direction, i.e., the first direction S1, so that it can be engaged in the first slot 22 or the second slot 23, or disengaged from the corresponding slot, so that the rotation of the transmission member 2 and the mounting seat 1 at the first hinge 21 can be locked or unlocked, which will not be repeated here.

[0049] It can also be understood that after the stopper 3 is disengaged from the corresponding slot, the stopper 3 may not contact the transmission member 2, or may abut against the circumferential surface of the transmission member 2 at the first hinged portion 21, as long as it does not interfere with the relative rotation of the transmission member 2 and the mounting seat 1. Preferably, the top of the locking portion 31 adapted to be engaged with the first slot 22 or the second slot 23 is configured as an arc with the rotation center of the first hinged portion 21 as the origin, and the circumferential surface of the transmission member 2 at the first hinged portion 21 is also configured as an arc with the rotation center of the first hinged portion 21 as the origin, so that when the transmission member 2 rotates around the first hinged portion 21, the stopper 3 and the circumferential surface of the transmission member 2 abutting against it at the first hinged portion 21 are smoothly connected.

[0050] In some embodiments, Figure 1 and Figure 2 As shown, the folding locking structure further includes an elastic member 4, the two active ends of which are respectively connected to the stop member 3 and the mounting seat 1, and are configured to reset the stop member 3 to the first position. In this way, the elastic potential energy of the elastic member 4 can be used to keep the stop member 3 in the tendency to reset to the first position, so that the stop member 3 and the transmission member 2 are firmly connected after being clamped, and the structure is stable, effectively preventing the occurrence of shaking, abnormal noise, etc. When unlocking is required, the stop member 3 can be pressed or pulled in a preset direction to move it from the first position to the second position, thereby disengaging from the first slot 22 or the second slot 23 to unlock the rotation of the transmission member 2 and the mounting seat 1 at the hinge; when pressing or pulling the stop member 3 stops, the stop member 3 abuts against the circumferential surface of the transmission member 2 at the first hinge portion 21, and when the transmission member 2 rotates to the first slot 22 or the second slot 23 toward the stop member 3, the elastic member 4 resets the stop member 3 to the first position along the preset direction based on elastic deformation, and the stop member 3 is engaged with the corresponding slot and then restored to the lock, thereby realizing automatic locking of the folding locking structure and further improving the convenience and smoothness of the locking operation.

[0051] It is understandable that the elastic member 4 may be a compression spring, a tension spring or an elastic sheet, etc., and may be adaptively selected according to the force application method and application direction, and may reset the stopper 3 to the first position along a preset direction when the first card slot 22 or the second card slot 23 is rotated toward the stopper 3. Preferably, the two action ends of the elastic member 4 are distributed along the first direction S1, and may provide an elastic force distributed along the first direction S1. For example, in this embodiment, a compression spring is used as the elastic member 4 and is arranged below the stop member 3. Its upper end is connected to the lower end of the stop member 3, and the lower end is connected to the mounting seat 1. At this time, the preset direction is also the first direction S1. Based on the elastic force of the elastic member 4 itself, the stop member 3 can be maintained in the first position. By pressing the stop member 3, it moves downward along the first direction S1 to the second position. The transmission member 2 is rotatable relative to the mounting seat 1, and the elastic member 4 is compressed to store energy. After the pressing stops, the elastic member 4 presses the stop member 3 against the circumferential surface of the transmission member 2 at the first hinged portion 21. When the transmission member 2 rotates to the first slot 22 or the second slot 23 toward the stop member 3, the elastic member 4 restores the deformation to move the stop member 3 upward along the first direction S1 to the first position, so as to be clamped and fixed with the transmission member 2 to complete the locking.

[0052] In some embodiments, Figure 2 , Figure 4 and Fig.10 As shown, the stop member 3 includes a locking portion 31 and a connecting portion 32, the locking portion 31 is suitable for being engaged with the transmission member 2, and its shape is adapted to the shapes of the first slot 22 and the second slot 23; the connecting portion 32 has a first connecting end 321, a second connecting end 322 and a third connecting end 323, the first connecting end 321 is connected to the locking portion 31, the second connecting end 322 is connected to the elastic member 4, the third connecting end 323 is extended to one side of the first connecting end 321 or the second connecting end 322, and is hinged to the mounting base 1 through a hinge three 331 and a hinge four 332. In this way, by hingedly connecting the stop member 3 to the mounting seat 1, the linear movement of the stop member 3 in the first direction S1 is converted into a rotational movement around the third connection end 323 and the hinged end of the mounting seat 1. The preset direction is the circumferential movement direction around the hinged end of the third connection end 323 and the mounting seat 1. The stop member 3 can pivot between the first position and the second position around the hinged end of the third connection end 323 and the mounting seat 1. At this time, the third connection end 323 and the hinged end of the mounting seat 1 can serve as a connection point to limit the stop member 3 and provide partial lateral force support, thereby reducing the elastic force requirement of the elastic member 4 and improving the convenience of the unlocking operation.

[0053] For example, Fig.10As shown, the connecting portion 32 is in a T-shaped structure, wherein the first connecting end 321 and the second connecting end 322 are distributed up and down along the first direction S1, and the second connecting end 322 is located below the first connecting end 321. In this way, the locking portion 31 is connected to or integrally formed above the first connecting end 321 as a special molding member for engaging with the transmission member 2, and the elastic member 4 is connected to the bottom of the second connecting end 322 as an elastic force provider, so that the locking portion 31 maintains a tendency to return upward to the first position; the third connecting end 323 is extended and arranged at the first connecting end 3 The third connection end 323 is provided on one side of the locking member 21 and is hinged to the mounting seat 1 at the far end in the extension direction; the extension direction of the third connection end 323 forms a preset angle with the first direction S1. In this embodiment, when the locking portion 31 is engaged with the transmission member 2, the preset angle between the extension direction of the third connection end 323 and the first direction S1 is 90°. In this way, when the locking portion 31 is engaged or disengaged with the transmission member 2, the displacement of the locking portion 31 in the first direction S1 can be increased, and the displacement of the locking portion 31 in the second direction S2 can be reduced, thereby improving the smoothness of the locking / unlocking operation. Among them, the second direction S2 is a direction perpendicular to the first direction S1 and the axial direction of the first hinged portion 21. Through the above-mentioned setting, the hinged end of the third connection end 323 and the mounting seat 1 as a limit connection point can provide partial lateral force support for the stop member 3, thereby achieving the purpose of reducing the elastic force requirement of the elastic member 4 and improving the convenience of the unlocking operation.

[0054] In some embodiments, Figures 5 to 10 As shown, the hinged end of the third connection end 323 and the mounting seat 1 is the second hinged portion 33, the rotation center axis of the second hinged portion 33 is parallel to the rotation center axis of the first hinged portion 21, and the clamping contact portion of the stopper 3 and the transmission member 2 is located in the same rotation plane as the first hinged portion 21 and the second hinged portion 33, that is, the rotation plane of the transmission member 2 at the first hinged portion 21 is coplanar with the rotation plane of the stopper 3 at the second hinged portion 33. In this way, when the locking portion 31 is clamped in the first clamping groove 22 or the second clamping groove 23, the torque generated by the transmission member 2 based on the rotation tendency can act on the stopper 3 along the length extension direction of the third connection end 323, and the force generated by the torque is transmitted to the second hinged portion 33 along the direction perpendicular to the rotation axis of the second hinged portion 33, thereby avoiding the situation where the shear stress generated due to the different rotation planes of the hinged portions causes the stopper 3 and the second hinged portion 33 to have local stress concentration, and effectively improving the connection stability and bearing capacity of the stopper 3.

[0055] Furthermore, if Fig.10As shown, the locking portion 31 has a first clamping end 311 and a second clamping end 312, and the first clamping end 311 is located on a side of the locking portion 31 away from the third connection end 323, and the second clamping end 312 is located on a side of the locking portion 31 close to the third connection end 323; the side of the first clamping end 311 away from the second clamping end 312 is constructed as an inclined slope 3111, and the slope 3111 is inclined in the first direction S1 toward the side close to the first hinge portion 21 and in the second direction S2 toward the side close to the second hinge portion 33; and the first clamping groove 22 and the second clamping groove 23 are both formed into a shape adapted to the locking portion 31, and have a shape matched with the first clamping end 311 and the second clamping end 312, so as to be suitable for clamping with the locking portion 31; wherein the second direction S2 is perpendicular to both the first direction S1 and the axial direction of the first hinge portion 21. By setting the inclined surface 3111 of the first clamping end 311, it is possible to avoid or reduce the interference of the transmission member 2 with the rotation of the stop member 3 during unlocking, thereby improving the smoothness of the unlocking operation.

[0056] For example, Fig.10 As shown, in the present embodiment, the second hinged portion 33 is arranged at the rear and lower part of the first hinged portion 21 shown in the figure, and its height position in the first direction S1 is lower than the clamping contact portion between the stopper 3 and the transmission member 2; taking the case where the locking portion 31 is clamped in the first clamping groove 22 as an example, at this time, the locking portion 31 is pressed and held in the first position by the elastic member 4; when the transmission member 2 wants to rotate counterclockwise around the first hinged portion 21, the front end of the first clamping groove 22, that is, the side of the first clamping groove 22 in the second direction S2 away from the second hinged portion 33, abuts against the first clamping end 311, and the torque generated by the transmission member 2 based on the counterclockwise rotation tendency can be regarded as the pressure transmitted along the connecting portion 32 to the second hinged portion 33, which is transmitted to the mounting seat 1 through the limiting connection of the second hinged portion 33 and offset or at least partially. The first hinge part 33 is connected to the first engaging groove 22 at the rear end of the first engaging groove 22, and the second engaging end 312 is abutted against the second engaging end 312. The torque generated by the clockwise rotation tendency of the transmission member 2 can be regarded as a pulling force acting on the second hinge part 33 along the connecting part 32, which is transmitted to the mounting seat 1 through the limiting connection of the second hinge part 33 and offset or at least partially offset. At the same time, the remaining torque generated by the transmission member 2 based on the rotation tendency is converted into a component force acting downward on the locking part 31 along the first direction S1, which is offset by the upward elastic force provided by the elastic member 4, thereby ensuring the effective engagement between the stop member 3 and the transmission member 2 and preventing it from shaking, detaching or making abnormal noises. When unlocking is required, the stop member 3 is pressed downward along the first direction S1. At this time, based on the setting of the inclined surface 3111 of the first clamping end 311, the interference between the front end of the first clamping slot 22 and the first clamping end 311 can be avoided or reduced, so that the stop member 3 can rotate smoothly around the second hinge part 33, thereby disengaging the locking part 31 from the first clamping slot 22 and completing the unlocking.

[0057] In some embodiments, Fig.10 As shown, the side of the second clamping end 312 away from the first clamping end 311 can also be constructed as a vertical surface 3121 parallel to the first direction S1, and the first clamping groove 22 and the second clamping groove 23 of the transmission member 2 have corresponding shapes that match the vertical surface 3121. In this way, on the one hand, the clamping strength and connection stability between the second clamping end 312 and the transmission member 2 can be improved, and on the other hand, interference with the transmission member 2 when the stop member 3 is reset to the first position can be avoided, thereby improving the smoothness of the reset lock.

[0058] Furthermore, the inclined surface 3111 of the first clamping end 311 can be set in a direction parallel to the tangent direction of the rotation direction of the second hinged portion 33. At this time, a force arm line is made through the axis of the second hinged portion 33 and is perpendicular to the inclined surface 3111. The shape of the connecting portion 32 is adjusted so that the force arm line is located inside the connecting portion 32. In this way, when the transmission member 2 is clamped with the stopper 3 and is about to rotate counterclockwise around the first hinged portion 21, the front end of the clamping groove is in surface contact with the inclined surface 3111, so that the transmission member 2 is The force applied by the inclined surface 3111 passes entirely or at least partially through the axis of the second hinge part 33. Since the torque generated by this part of the force on the second hinge part 33 is zero, the locking part 31 will not rotate around the second hinge part 33. The torque generated by the transmission part 2 based on the counterclockwise rotation tendency is regarded as the pressure transmitted to the second hinge part 33 along the connecting part 32, which can be balanced by the reaction force of the second hinge part 33, thereby further reducing the elastic force requirement of the elastic part 4 and improving the convenience of the unlocking operation.

[0059] In some embodiments, Figures 2 to 11As shown, the folding locking structure also includes a limiting mechanism 5, which is connected to the mounting seat 1 and has a movable end 51, and the movable end 51 is connected to the stop member 3 to move synchronously with the stop member 3; the limiting mechanism 5 is configured to have a first state and a second state that can be switched to each other, and when the movable end 51 moves to a preset stroke along the first direction S1, the limiting mechanism 5 can switch states, for example, from the first state to the second state, or from the second state to the first state; wherein, when the limiting mechanism 5 is in the first state, the stop member 3 is allowed to move between the first position and the second position, so that when the slot of the transmission member 2, such as the first slot 22, is turned toward the stop member 3, the elastic member 4 can reset the stop member 3 to the first position; and when the limiting mechanism 5 is in the second state, the limiting mechanism 5 can limit the movable end 51 to limit the stop member 3 connected thereto from moving between the first position and the second position, and the elastic member 4 can only reset the stop member 3 and keep it in the second position. In this way, by driving the movable end 51 in the first direction S1 to a preset stroke through external force such as manual pressing, the use state of the limiting mechanism 5 can be switched, and then the limiting position of the movable end 51 in the first direction S1 can be adjusted. Since the movable end 51 can drive the connected stop member 3 to move synchronously while moving, the limiting mechanism 5 can limit the stop member 3 by limiting the movable end 51; after the external force is removed, the stop member 3 can be reset and maintained in the first position or the second position under the action of the elastic member 4, so that the transmission member 2 can be maintained in a locked state or an unlocked state.

[0060] For example, Figure 2 , Figures 4 to 11As shown, the limiting mechanism 5 includes a slider 52 and a slide bar 53. The mounting seat 1 is provided with a first slide groove 11 extending along the first direction S1. The slider 52 is connected to the stopper 3 as a movable end and is slidably connected to the first slide groove 11. The slider 52 is provided with a second slide groove 521. The slide bar 53 is extended along the first direction S1 and has a first end 531 and a second end 532 distributed along the first direction S1. The first end 531 is located below the second end 532 and is hinged to the mounting seat 1 at the lower side of the first slide groove 11. The second end 532 is slidably connected to the second slide groove 521. The second slide groove 521 is formed as an annular closed slide groove, and a first inflection point group A, a second inflection point group B, a third inflection point group C and a fourth inflection point group D are sequentially arranged along the preset track of the second slide groove 521. When the second end 532 is located at the first inflection point group A, the stopper 3 is located at the first position; when the second end 532 is located at the third inflection point group C, the stopper 3 is located at the second position; when the second end 532 is located at the second inflection point group B or the fourth inflection point group D, the stopper 3 is located at the third position, and the third position is arranged farther away from the first hinged portion 21 in the first direction S1 than the second position; the second slide groove 521 is configured When a first force is applied to the slider 52 along the first direction S1, the second end 532 can slide along the preset track of the second slide groove 521 to the second inflection point group B or the fourth inflection point group D; when a second force is applied to the slider 52 along the first direction S1, the second end 532 can slide along the preset track of the second slide groove 521 to the first inflection point group A or the third inflection point group C; wherein the first force and the second force are in opposite directions in the first direction S1; under the repeated driving of the first force and the second force, the second end 532 of the slide rod 53 can slide along the preset track of the second slide groove 521 The preset trajectory of 1 passes through the first inflection point group A, the second inflection point group B, the third inflection point group C and the fourth inflection point group D in sequence and then returns to the first inflection point group A to realize a motion cycle; the chute section starting from the fourth inflection point group D and passing through the first inflection point group A to the second inflection point group B is the first trajectory section, and the chute section starting from the second inflection point group B and passing through the third inflection point group C to the fourth inflection point group D is the second trajectory section. When the second end 532 is located in the first trajectory section, the limiting mechanism 5 is in the first state; when the second end 532 is located in the second trajectory section, the limiting mechanism 5 is in the second state.In this embodiment, when the slider 52 is pressed to move downward, the force driving the slider 52 to move downward is greater than the force of the elastic member 4 driving the slider 52 to move upward, which can be regarded as applying a first downward force F1 to the slider 52 along the first direction S1. At this time, the slider 52 moves downward along the first slide groove 11, and the second end 532 can slide from the first inflection point group A to the second inflection point group B or from the third inflection point group C to the fourth inflection point group D along the preset trajectory of the second slide groove 521; when the second end 532 of the slide rod 53 reaches the second inflection point group B or the fourth inflection point group D, it reaches the preset stroke, and the limit mechanism 5 can then switch from the first state to the fourth inflection point group D. The second state or switches from the second state to the first state; and when the external force is removed, the force of the elastic member 4 driving the slider 52 to move upward is greater than the force pressing and driving the slider 52 to move downward, which can be regarded as applying a second upward force F2 to the slider 52 along the first direction S1. At this time, the slider 52 moves upward along the first slide groove 11, and the second end 532 can slide from the fourth inflection point group D to the first inflection point group A or from the second inflection point group B to the third inflection point group C along the preset trajectory of the second slide groove 521. The stop member 3 is also reset and held in the first position or the second position by the elastic member 4, so that the transmission member 2 can be maintained in the locked state or the unlocked state.

[0061] More specifically, in this embodiment, the inflection point configuration of the second slide groove 521 is as follows: Fig.11As shown, the first inflection point group A and the third inflection point group C are located on the straight line of the first direction S1, and the first inflection point group A is located below the third inflection point group C; the second inflection point group B is located at the upper left of the third inflection point group C, the fourth inflection point group D is located at the upper right of the third inflection point group C, and the second inflection point group B and the fourth inflection point group D are located at the same height position in the first direction S1; wherein the first inflection point group A includes a first upper inflection point A1 and a first lower inflection point A2, and the first upper inflection point A1 is located above the right of the first lower inflection point A2; the second inflection point group B includes a second upper inflection point B1 and a second lower inflection point B2. B2, the second upper turning point B1 is located at the upper right of the second lower turning point B2; the third turning point group C includes the third upper turning point C1 and the third lower turning point C2, and the third upper turning point C1 is located at the upper left of the third lower turning point C2; the fourth turning point group D includes the fourth upper turning point D1 and the fourth lower turning point D2, and the fourth upper turning point D1 is located at the upper right of the fourth lower turning point D2; based on the above-mentioned turning point settings, the second end 532 of the sliding rod 53 can only move from the first turning point group A to the second turning point group B to the third turning point group C to the fourth turning point group D and then back to the first turning point group A, and move clockwise in this cycle. It can be understood that the height positions of the second inflection point group B and the fourth inflection point group D in the first direction S1 are preferably located at the same height, that is, the distance from the third lower inflection point C2 to the second upper inflection point B1 in the first direction S1 is equal to the distance from the third lower inflection point C2 to the fourth upper inflection point D1 in the first direction S1, and the second end 532 reaches the second upper inflection point B1 or the fourth upper inflection point D1 when it reaches the preset stroke. In this way, when the second end 532 reaches the second upper inflection point B1, it enters the second trajectory segment, and the limiting mechanism 5 switches from the first state to the second state; when the second end 532 reaches the second upper inflection point B1, it enters the first trajectory segment, and the limiting mechanism 5 switches from the second state to the first state.

[0062] It can be understood that, in other embodiments, the inflection point configuration of the second slide groove 521 can be adaptively selected according to the method and direction of applying the force. For example, the inflection point configuration of the second slide groove 521 is mirror-symmetrical with the above-mentioned configuration as a whole in the horizontal direction, and the movement cycle of the second end 532 in the second slide groove 521 is correspondingly changed to counterclockwise movement, which can also realize the state switching of the limit mechanism 5; the inflection point configuration of the second slide groove 521 can also be mirror-symmetrical in the up and down directions about its rotation center, and the movement cycle of the second end 532 in the second slide groove 521 can be changed corresponding to the specific inflection point direction, which will not be repeated here.

[0063] It can also be understood that in other embodiments, the limit mechanism 5 can also be a straight key self-locking mechanism similar to a push-type ballpoint pen, using its own structure to achieve movement along the first direction S1, and at the same time, its movable end 51 can be reset by using a spring carried by its own structure, or can be reset by using an elastic member 4 without a spring, which will not be described in detail here. Figure 2 and Figure 4As shown, the limiting mechanism 5 further includes a pressing rod 54 , which can be hinged on the slider 52 . The pressing rod 54 extends out of the mounting seat 1 , so that the user can press the slider 52 to drive the slider 52 to move downward.

[0064] In some embodiments, Figure 2 , Figure 4 and Fig.10 As shown, when the limiting mechanism 5 composed of the above-mentioned slider 52 and the slide rod 53 is applied to the stopper 3 hinged on the mounting seat 1, since the stopper 3 rotates around the second hinge portion 33, its first connecting end 321 and the second connecting end 322 will produce circumferential movement, that is, displacement in the first direction S1 and the second direction S2, and the slider 52 can only move up and down in the first slide groove 11 along the first direction S1, and is limited by the first slide groove 11 in the second direction S2 and cannot move. Therefore, in order to reduce the interference between the movement of the slider 52 and the rotation of the stopper 3, in this embodiment, the slider 52 and the stopper 3 are slidably hinged by the hinge member 5221 and the hinge member 6 5222, and the hinge end of the slider 52 and the stopper 3 is the third hinge portion 522, and the hinge end of the third hinge portion 522 is the hinge end of the slider 52 and the stopper 3. The hinge hole can be formed as a waist-shaped hole, and the length direction of the waist-shaped hole is set to not coincide with the first direction S1, for example, toward the second direction S2 or parallel to the second direction S2, so that the sliding direction of the third hinge part 522 does not coincide with the first direction S1; the size of the hinge part six 5222 is larger than the width of the waist-shaped hole, and the cylindrical hinge part five 5221 formed on the slider 52 is passed through the waist-shaped hole and the hinge part six 5222 to be fixedly connected, so that the slider 52 is slidingly hinged with the stopper 3, so that the slider 52 can rotate relative to the stopper 3 and move slightly in the second direction S2. At the same time, when the stopper 3 is hinged to the mounting seat 1 through the second hinge part 33 and rotates around it, the slider 52 can also move in the first slide groove 11 along the first direction S1, so that the mutual movement between the two is smooth and fluent.

[0065] It is understandable that the slider 52 and the first slide groove 11 may also be made of plastic, using the toughness and resilience of the plastic to meet and adapt to the requirement of a small lateral displacement generated in the second direction S2.

[0066] In some embodiments, Figure 2 and Figure 4As shown, when the limiting mechanism 5 composed of the slider 52 and the slide bar 53 is applied to the stopper 3 connected to the mounting seat 1, the first end 531 of the slide bar 53 can also pass through the mounting seat 1 and bend along the first direction S1 to the side where the elastic member 4 is located to form a hook portion 5311; the elastic member 4 is a compression spring, one end of the compression spring is sleeved on the end of the stopper 3 away from the transmission member 2, and the other end of the compression spring is sleeved on the hook portion 5311. In this way, the slide bar 53 can be used to limit the elastic member 4, and the spatial orientation of each mechanism component can be reasonably arranged. Under the requirement of ensuring the effective connection of each movable mechanism, the space occupation of the overall structure can be reduced. Preferably, the end of the hook portion 5311 is also sleeved with a limiting sleeve 5312, which is a rubber sleeve. On the one hand, it can prevent the elastic member 4 from falling off from the hook portion 5311, and on the other hand, it can limit the axial movement of the first end 531 at the penetration point of the mounting seat 1, thereby improving the connection stability between the slide bar 53 and the mounting seat 1.

[0067] In some embodiments, Fig.12 and Fig.13 As shown, the first clamping groove 22 and the second clamping groove 23 are provided with flanges 24 protruding radially outward along the first hinged part 21 at the circumferential interval; the flange 24 is generally in an arc shape with low sides and high middle, and can smoothly connect with the circumferential surface of the transmission member 2 at the first hinged part 21; the flange 24 is configured so that when the transmission member 2 rotates around the mounting seat 1, the flange 24 can move the stopper 3 along the first direction S1 and drive the limit mechanism 5 to switch from the second state to the first state. By linking the rotational movement of the transmission member 2 around the mounting seat 1 with the state switching of the limit mechanism 5, the limit mechanism 5 can be automatically switched from the second state to the first state. In this way, when the folding member 6 is rotated to the flat position or the folding position, the folding locking structure can be automatically locked, further improving the convenience and smoothness of the locking operation.

[0068] Specifically, the linkage process between the rotation of the transmission member 2 around the mounting seat 1 and the state switching of the limiting mechanism 5 is as follows:

[0069] like Figure 6 As shown, the foldable member 6 is in a flat position relative to the mounting seat. At this time, the limiting mechanism 5 is in the first state. The stopper 3 is supported by the elastic member 4 in the first position and is clamped in the first clamping groove 22 of the transmission member 2, so as to lock the transmission member 2 and the foldable member 6 connected thereto in the flat position. First, the movable end 51 of the limiting mechanism 5 is pressed downward to a preset stroke. Driven by the movable end 51, the stopper 3 rotates counterclockwise around the second hinge portion 33 in a preset direction and moves downward in the first direction S1 to exceed the second position. After the pressing is released, as shown in FIG. Fig.12As shown, the limiting mechanism 5 switches from the first state to the second state, and the movable end 51 is limited by the limiting mechanism 5, so that the stopper 3 is reset by the elastic member 4 and maintained in the second position. At this time, the transmission member 2 can rotate relative to the mounting seat 1; then, the folding member 6 and the transmission member 2 are rotated clockwise around the first hinge portion 21, as shown in FIG. Fig.13 As shown, based on the setting of the flange 24, when the transmission member 2 rotates around the mounting seat 1, the flange 24 can push the stop member 3 downward along the first direction S1, so that the stop member 3 moves further from the second position along the preset direction to a position away from the first hinge portion 21, thereby driving the movable end 51 connected to the stop member 3 to move along the first direction S1 to a preset stroke. At this time, the limiting mechanism 5 switches from the second state to the first state, and the limiting of the movable end 51 is released; finally, the folding member 6 and the transmission member 2 continue to rotate clockwise around the first hinge portion 21. At this time, the limiting mechanism 5 is in the first state, allowing the stop member 3 to move between the first position and the second position. Fig. 9 As shown, when the transmission member 2 rotates to the point where the part to be folded 6 is in the folding position relative to the mounting seat, the second slot 23 of the transmission member 2 faces the stop member 3, and the stop member 3 is reset upward and engaged in the second slot 23 under the action of the elastic member 4, and is supported in the first position by the elastic member 4, so that the transmission member 2 and the part to be folded 6 connected thereto are locked in the folding position, thereby realizing automatic locking of the folding locking structure.

[0070] It can be understood that when the limiting mechanism 5 composed of the above-mentioned slider 52 and the slide rod 53 is applied to the stop member 3 slidably connected to the mounting seat 1, the projection distance of the moving path of the second end 532 from the third lower inflection point C2 to the fourth upper inflection point D1 in the first direction S1 is taken as the first spacing, and the radial outward protrusion dimension of the flange 24 along the first hinge part 21 (that is, the difference between the length between the far end of the flange 24 and the rotation center of the first hinge part 21 and the radius of the circumferential surface of the transmission member 2 at the first hinge part 21) is the same as the first spacing, so that the flange 24 can move the stop member 3 to the third position along the first direction S1, and the slider 52 correspondingly moves downward along the first direction S1 until the second end 532 of the slide rod 53 reaches the fourth inflection point group D, thereby realizing the automatic switching of the limiting mechanism 5 from the second state to the first state.

[0071] It is also understandable that Fig.13As shown, when the limiting mechanism 5 composed of the slider 52 and the slide rod 53 is applied to the stopper 3 hinged on the mounting seat 1, since the first clamping end 311 and the second clamping end 312 at the top of the locking portion 31 have different radial distances relative to the rotation center of the second hinged portion 33, when the stopper 3 rotates around the second hinged portion 33, the movement distance of the first clamping end 311 in the first direction S1 is greater than the movement distance of the second clamping end 312 in the first direction S1. Therefore, the height of the second clamping end 312 can also be set to be slightly higher than the first clamping end 311, that is, when the stopper 3 is in the first position, the second clamping end 312 is in the second position. The height position of one direction S1 is higher than the height position of the first clamping end 311 in the first direction S1, and the size of the flange 24 can be reduced according to the height of the second clamping end 312, and can be presented as an arc with the rotation center of the first hinge part 21 as the origin. In this way, on the one hand, the flange 24 can be used to move the second clamping end 312 to move the stop member 3 to the third position, thereby realizing the automatic switching of the limiting mechanism 5 from the second state to the first state; on the other hand, the clamping strength and connection stability of the second clamping end 312 and the transmission member 2 can be improved, thereby ensuring that the folding locking structure is firmly connected and has a stable structure after locking.

[0072] In another embodiment, a seat is provided, including a seat cushion body, a seat frame 7 and the above-mentioned folding and locking structure, the mounting seat 1 is connected to the seat frame 7, and the seat cushion body is connected to the transmission member 2 as a folding member 6, so that the folding and locking structure can be applied to the seat cushion to achieve the folding and locking of the seat cushion. For other structures and working principles of the folding and locking structure, please refer to the above-mentioned description of the embodiment of the folding and locking structure. Since the folding and locking structure has the above-mentioned technical effects, the seat having the folding and locking structure should also have the corresponding technical effects, which will not be repeated here.

[0073] In another embodiment, a seat is provided, including an armrest body, a seat frame 7 and the above-mentioned folding and locking structure, the mounting seat 1 is connected to the seat frame 7, and the armrest body is connected to the transmission member 2 as a folding member 6, so that the folding and locking structure can be applied to the seat armrest to achieve the folding and locking of the seat armrest. For other structures and working principles of the folding and locking structure, please refer to the above-mentioned description of the embodiment of the folding and locking structure. Since the folding and locking structure has the above-mentioned technical effects, the seat having the folding and locking structure should also have the corresponding technical effects, which will not be repeated here.

[0074] In addition, the embodiment of the present invention further provides a vehicle, including at least the above-mentioned seat. For other structures and working principles of the seat, please refer to the above-mentioned description of the embodiment of the seat. Since the seat has the above-mentioned technical effects, the vehicle having the seat should also have the corresponding technical effects, which will not be repeated here.

[0075] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the description of the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

[0077] The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradicting each other.

[0078] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made according to the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A folding locking structure for a seat, characterized in that: include: Mounting seat; A transmission member, used to connect the member to be folded; the transmission member is hinged to the mounting seat, with the hinged end of the transmission member and the mounting seat as a first hinged portion, and a first clamping groove and a second clamping groove are provided on the outer edge of the transmission member along the circumference of the first hinged portion; the first clamping groove and the second clamping groove are spaced apart in the circumference of the first hinged portion, and are concave in the radial direction of the first hinged portion; and a stopper, movably connected to the mounting seat, and having a first position and a second position relative to the transmission member, wherein the first position is arranged closer to the first hinge portion than the second position in a first direction; and the first direction is perpendicular to the axial direction of the first hinge portion; The stopper is configured to be able to move between the first position and the second position along a preset direction when the transmission member rotates around the first hinge portion until the first slot or the second slot faces the stopper; wherein, When the stopper is located at the first position, it can be engaged in the first slot or the second slot; When the stopper is located at the second position, it can be disengaged from the corresponding slot, so that the transmission member can rotate relative to the mounting seat.

2. The folding and locking structure for a seat according to claim 1, characterized in that: It also includes an elastic member, wherein two active ends of the elastic member are respectively connected to the stop member and the mounting seat, and are configured to reset the stop member to the first position.

3. The folding and locking structure for a seat according to claim 2, characterized in that: The stop member includes a locking portion and a connecting portion, the locking portion is suitable for being clamped with the transmission member; the connecting portion has a first connecting end, a second connecting end and a third connecting end, the first connecting end is connected to the locking portion, the second connecting end is connected to the elastic member, and the third connecting end is extended to one side of the first connecting end or the second connecting end and is hinged to the mounting seat.

4. The folding and locking structure for a seat according to claim 3, characterized in that: The hinged end of the third connecting end and the mounting seat is used as the second hinged part, the axial direction of the second hinged part is parallel to the axial direction of the first hinged part, and the clamping contact part of the stopper and the transmission part is located in the same rotation plane as the first hinged part and the second hinged part.

5. The folding and locking structure for a seat according to claim 4, characterized in that: The locking portion has a first clamping end and a second clamping end, and the first clamping end is located on a side of the locking portion away from the third connection end, and the second clamping end is located on a side of the locking portion close to the third connection end; the side of the first clamping end away from the second clamping end is constructed as an inclined slope, and the slope is inclined in the first direction toward a side close to the first hinged portion and in the second direction toward a side close to the second hinged portion; wherein the second direction is perpendicular to both the first direction and the axial direction of the first hinged portion.

6. The folding and locking structure for a seat according to any one of claims 2 to 5, characterized in that: It also includes a limiting mechanism, which is connected to the mounting seat and has a movable end, and the movable end is connected to the stop member so as to move synchronously with the stop member; the limiting mechanism is configured to have a first state and a second state that can be switched between each other, and to switch states when the movable end moves to a preset stroke along the first direction; wherein, when the limiting mechanism is in the second state, it can limit the movable end so as to restrict the stop member connected thereto from moving between the first position and the second position.

7. The folding and locking structure for a seat according to claim 6, characterized in that: The limiting mechanism includes a slider and a slide bar, the mounting seat is provided with a first slide groove extending along the first direction, the slider is connected to the stopper as the movable end, and is slidably connected to the first slide groove; the slider is provided with a second slide groove, the slide bar has a first end and a second end distributed along the first direction, the first end is hinged to the mounting seat, and the second end is slidably connected to the second slide groove; The second slide groove is formed as an annular closed slide groove, and a first inflection point group, a second inflection point group, a third inflection point group and a fourth inflection point group are sequentially arranged along a preset track of the second slide groove, when the second end is located at the first inflection point group, the stopper is located at the first position; when the second end is located at the third inflection point group, the stopper is located at the second position; when the second end is located at the second inflection point group or the fourth inflection point group, the stopper is located at the third position, and the third position is arranged farther away from the first hinge portion than the second position in the first direction; The second slide groove is configured such that when a first force is applied to the slider along the first direction, the second end can slide along a preset track of the second slide groove to the second inflection point group or the fourth inflection point group; when a second force is applied to the slider along the first direction, the second end can slide along a preset track of the second slide groove to the first inflection point group or the third inflection point group; the first force and the second force are opposite in direction to each other in the first direction; Among them, the slide section starting from the fourth inflection point group and passing through the first inflection point group to the second inflection point group as the end point is the first track segment, and the slide section starting from the second inflection point group and passing through the third inflection point group to the fourth inflection point group as the end point is the second track segment. When the second end is located in the first track segment, the limiting mechanism is in the first state; when the second end is located in the second track segment, the limiting mechanism is in the second state.

8. The folding and locking structure for a seat according to claim 7, characterized in that: The slider is slidably hinged to the stopper; the hinged ends of the slider and the stopper serve as a third hinged portion, and the sliding direction of the third hinged portion does not coincide with the first direction.

9. The folding and locking structure for a seat according to claim 7, characterized in that: The first end passes through the mounting seat and is bent along the first direction toward the side where the elastic member is located to form a hook portion; the elastic member is a compression spring, one end of the compression spring is sleeved on an end of the stop member away from the transmission member, and the other end of the compression spring is sleeved on the hook portion.

10. The folding and locking structure for a seat according to claim 6, characterized in that: The first and second card slots are provided with flanges protruding radially outward along the first hinged portion at circumferential intervals, and the flanges are configured so that when the transmission member rotates around the mounting seat, the flanges can push the stop member along the first direction and drive the limiting mechanism to switch from the second state to the first state.

11. A seat, characterized in that: It comprises a cushion body, a seat frame and the folding and locking structure described in any one of claims 1 to 10, wherein the mounting seat is connected to the seat frame, and the cushion body as the part to be folded is connected to the transmission part.

12. A seat, characterized in that: It comprises an armrest body, a seat frame and the folding and locking structure described in any one of claims 1 to 10, wherein the mounting seat is connected to the seat frame, and the armrest body as the part to be folded is connected to the transmission part.

13. A vehicle, characterized in that: Comprising a seat as claimed in claim 11 or 12.

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