Seat arm folding locking mechanism, seat and vehicle

Abstract

The application discloses a seat armrest folding locking mechanism, a seat and a vehicle. The seat armrest folding locking mechanism comprises: a first limiting device comprising a first limiting surface and a first moving surface; a second limiting device comprising a second limiting surface capable of being correspondingly arranged with the first limiting surface and the first moving surface; one of the first limiting device and the second limiting device is used for being connected with a main body of the seat, and the other is used for being connected with a seat armrest; a guide device capable of guiding the first limiting device and the second limiting device to relatively approach and move away from each other; when the first limiting surface and the second limiting surface are correspondingly arranged, the first limiting device and the second limiting device relatively approach each other, the first limiting surface and the second limiting surface form a positioning and cooperating structure, and the first limiting device and the second limiting device are relatively locked; when the second limiting surface and the first moving surface are correspondingly arranged, the guide device guides the first limiting device and the second limiting device to relatively move away from each other, and the first limiting device and the second limiting device can relatively move.

Description

Technical Field

[0001] This invention relates to the field of automotive equipment technology, and in particular to a seat armrest folding locking mechanism, a seat, and a vehicle. Background Technology

[0002] With the development of the automotive industry, there are more and more seat configurations in cars, and foldable seat armrests are increasingly being used in the rear seats of cars to improve passenger comfort.

[0003] Currently, seat armrests generally use folding locks to achieve folding and locking functions. The main structure of these folding locks is open, only restricting the armrest from moving away from the seat body. However, due to poor versatility and other issues, a gap still exists between the armrest and the seat body. During bumpy driving, the armrest is prone to wobbling, causing impacts between it and the seat body, resulting in abnormal noises and other problems.

[0004] Therefore, how to prevent the armrests of the seat from wobbling is a problem that urgently needs to be solved by those in this technical field. Summary of the Invention

[0005] In view of this, the present invention provides a seat armrest folding locking mechanism to prevent the seat armrest from wobbling. The present invention also provides a seat and a vehicle having the above-described seat armrest folding locking mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A seat armrest folding locking mechanism includes:

[0008] A first limiting device, comprising a first limiting surface and a first movable surface;

[0009] The second limiting device includes a second limiting surface that can be disposed corresponding to the first limiting surface and the first moving surface; one of the first limiting device and the second limiting device is used to connect with the main body of the seat, and the other is used to connect with the armrest of the seat.

[0010] A guiding device, which can guide the first limiting device and the second limiting device to move closer and further apart;

[0011] in,

[0012] When the first limiting surface and the second limiting surface are respectively set, the guiding device guides the first limiting device and the second limiting device to move closer to each other, and the first limiting surface and the second limiting surface form a positioning and mating structure, so that the first limiting device and the second limiting device are locked relative to each other.

[0013] When the second limiting surface is set in relation to the first moving surface, the guiding device guides the first limiting device and the second limiting device to move away from each other, and the first moving surface and the second limiting surface form a relative moving structure, so that the first limiting device and the second limiting device can move relative to each other.

[0014] Optionally, in the above-mentioned seat armrest folding locking mechanism, the first limiting device includes an annular structure, and the first limiting surface and the first moving surface are located on the inner wall of the annular structure and arranged along the circumference of the annular structure;

[0015] The second limiting device is located inside the annular structure, and the second limiting surface faces the inner wall of the annular structure.

[0016] Optionally, in the above-mentioned seat armrest folding locking mechanism, the first limiting device further includes a guide plate located within the annular structure, and the guide plate has a first guide structure;

[0017] The second limiting device has a second guide structure that slides in cooperation with the first guide structure.

[0018] Optionally, in the above-mentioned seat armrest folding locking mechanism, the first guide structure is a groove structure with limiting surfaces at both ends;

[0019] The second guide structure is a boss structure, and the second guide structure can make limiting contact with the limiting surface.

[0020] Optionally, in the above-mentioned seat armrest folding locking mechanism, the number of the second limiting devices is multiple and they are arranged circumferentially along the annular structure.

[0021] Optionally, in the above-mentioned seat armrest folding locking mechanism, when the first limiting surface and the second limiting surface are respectively provided, the guide device can drive the first limiting device and the second limiting device to move closer to each other, and the first limiting surface and the second limiting surface are in concave-convex cooperation.

[0022] When the second limiting surface is set in correspondence with the first moving surface, the guide device can drive the first limiting device and the second limiting device to move away from each other, and the first moving surface and the second limiting surface slide together.

[0023] Optionally, in the above-mentioned seat armrest folding locking mechanism, the first limiting surface and the second limiting surface are meshing teeth that can engage with each other;

[0024] The first movable surface is a smooth surface.

[0025] Optionally, in the above-mentioned seat armrest folding locking mechanism, the guide device includes:

[0026] A cam component, the outer surface of which has a cam pushing surface, a guide pushing surface, and a clearance structure that can contact the second guide structure of the second limiting device. When the second guide structure moves along the arrangement direction of the first limiting surface and the first moving surface, it can push the cam pushing surface to make the cam component rotate. The guide pushing surface can push the second guide structure closer to the first limiting device. The clearance structure can make the second guide structure move away from the first limiting device while in contact with the second guide structure.

[0027] A rotating shaft coaxially connected to the cam component;

[0028] An elastic reset assembly connected to the rotating shaft is used to reset the cam component and the first limiting device.

[0029] Optionally, in the above-mentioned seat armrest folding locking mechanism, the elastic reset component includes:

[0030] A slide plate fixed relative to the first limiting device, the slide plate having a first sliding structure, the second limiting device slidingly engaging with the first sliding structure and being able to move in directions approaching and away from the first limiting device;

[0031] A return spring, one end of which is connected to the rotating shaft or the cam component, and the other end of which is fixed relative to the slide plate.

[0032] Optionally, in the above-mentioned seat armrest folding locking mechanism, the guide device further includes an unlocking component, the unlocking component having an unlocking surface facing the outer surface of the cam component, and the second limiting device is located between the unlocking surface and the outer surface of the cam component;

[0033] The unlocking surface has an unlocking push surface capable of pushing the second guide structure toward the avoidance structure.

[0034] The present invention also provides a seat, including a seat body and a seat armrest, and further including a seat armrest folding locking mechanism as described in any of the above claims.

[0035] Optionally, in the above-described seat, the armrest is rotatably connected to the seat body via a connecting shaft;

[0036] The seat armrest folding locking mechanism is provided at one end of the connecting shaft; or, the seat armrest folding locking mechanism is provided at both ends of the connecting shaft.

[0037] The present invention also provides a vehicle including a seat, said seat being the seat described above.

[0038] As can be seen from the above technical solution, the seat armrest folding and locking mechanism provided by the present invention, when the seat armrest is folded and retracted relative to the main body of the seat, drives the seat armrest to rotate relative to the main body of the seat through external force or a driving device, causing the first limiting device and the second limiting device to move relative to each other, so that the second limiting surface of the second limiting device switches between corresponding to the first limiting surface and the first moving surface of the first limiting device. Since the first limiting surface and the second limiting surface are correspondingly set, the guiding device guides the first limiting device and the second limiting device to move closer to each other, and the first limiting surface and the second limiting surface form a positioning and cooperation structure, so that the first limiting device and the second limiting device are locked relative to each other, realizing the relative locking of the first limiting device and the second limiting device. That is, the seat armrest is directly positioned relative to the main body of the seat, effectively avoiding the wobbling of the seat armrest, and thus avoiding problems such as abnormal noise caused by the wobbling of the seat armrest.

[0039] The seat and vehicle provided by this invention have the same technical effects as the aforementioned seat armrest folding and locking mechanism, and will not be described in detail here. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 An exploded view of the seat armrest folding locking mechanism provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the first state of the seat armrest folding locking mechanism provided in an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the second state of the seat armrest folding locking mechanism provided in an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the second limiting device provided in an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the structure of the first limiting device provided in an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the first mating structure of the first limiting device and the second limiting device provided in an embodiment of the present invention;

[0047] Figure 7A schematic diagram illustrating the cooperation between the unlocking component and the second limiting device provided in an embodiment of the present invention;

[0048] Figure 8 This is a schematic diagram of the second cooperation structure between the first limiting device and the second limiting device provided in an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram of the structure of the second high-position limiting device provided in an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of the structure of the second low-position limiting device provided in an embodiment of the present invention;

[0051] Figure 11 This is a schematic diagram of the first mating structure between the rotating shaft and the cam component provided in an embodiment of the present invention;

[0052] Figure 12 This is a schematic diagram of the second mating structure between the rotating shaft and the cam component provided in an embodiment of the present invention;

[0053] Figure 13 This is a schematic diagram of the first mating structure of the second limiting device, the first limiting device, and the cam component provided in an embodiment of the present invention;

[0054] Figure 14 This is a schematic diagram of the second cooperation structure between the second limiting device, the first limiting device, and the cam component provided in an embodiment of the present invention;

[0055] Figure 15 A schematic diagram of the mating structure of the reset spring, slide plate, and rotating shaft provided in an embodiment of the present invention;

[0056] Figure 16 This is a schematic diagram of the cooperation structure between the cam component, the unlocking component, and the rotating shaft provided in an embodiment of the present invention;

[0057] Figure 17 This is a schematic diagram of the cooperation structure between the second limiting device and the unlocking component provided in an embodiment of the present invention;

[0058] Figure 18 This is another structural schematic diagram of the first limiting device provided in an embodiment of the present invention;

[0059] Figure 19 A schematic diagram of the cooperation structure between the first limiting device and the sheath provided in an embodiment of the present invention;

[0060] Figure 20 A cross-sectional view of the first limiting device and the sheath provided in an embodiment of the present invention;

[0061] Figure 21 for Figure 20 An enlarged schematic diagram of part A in the middle;

[0062] Figure 22 A schematic diagram of the combined structure of the seat armrest folding locking mechanism and the connecting shaft provided in an embodiment of the present invention;

[0063] Figure 23 This is a schematic diagram of the structure of a seat armrest provided in an embodiment of the present invention;

[0064] in,

[0065] 1-Return spring; 11-Inner end of disc spring; 12-Outer end of disc spring; 2-Slide plate; 21-Positioning protrusion; 22-Spring hanging boss; 3-Second limiting device; 301-Second limiting surface; 302-Second guide structure; 31-Second high-position limiting device; 311-Second high-position limiting surface; 312-Second high-position guide structure; 32-Second low-position limiting device; 321-Second low-position limiting surface; 322-Second low-position guide structure; 4-Rotating shaft; 41-Positioning port; 5-Cam Components; 50-Limiting guide surface; 51-Cam pushing surface; 52-Guiding pushing surface; 53-Avoidance structure; 54-Claw groove; 6-Unlocking component; 61-Claw; 62-Unlocking surface; 7-First limiting device; 701-First limiting surface; 702-First moving surface; 703-First guiding structure; 704-First positioning protrusion; 705-First limiting outer ring; 8-Sheath; 801-Inner wall of sheath; 802-Gap; 100-Seat armrest folding locking mechanism; 200-Connecting shaft. Detailed Implementation

[0066] This invention discloses a folding and locking mechanism for seat armrests to prevent them from wobbling. This invention also provides a seat and a vehicle incorporating the aforementioned folding and locking mechanism for seat armrests.

[0067] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0068] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a seat armrest folding locking mechanism, including a first limiting device 7, a second limiting device 3, and a guide device.

[0069] The first limiting device 7 includes a first limiting surface 701 and a first moving surface 702; the second limiting device 3 includes a second limiting surface 301 that can be correspondingly provided with the first limiting surface 701 and the first moving surface 702; one of the first limiting device 7 and the second limiting device 3 is used to connect with the main body of the seat, and the other is used to connect with the armrest of the seat; the guiding device can guide the first limiting device 7 and the second limiting device 3 to move closer and further apart.

[0070] When the first limiting surface 701 and the second limiting surface 301 are set in correspondence, the guide device guides the first limiting device 7 and the second limiting device 3 to move closer to each other, and the first limiting surface 701 and the second limiting surface 301 form a positioning and cooperating structure, so that the first limiting device 7 and the second limiting device 3 are locked relative to each other.

[0071] When the second limiting surface 301 is set in correspondence with the first moving surface 702, the guiding device guides the first limiting device 7 and the second limiting device 3 to move away from each other, and the first moving surface 702 and the second limiting surface 301 form a relative moving structure, so that the first limiting device 7 and the second limiting device 3 can move relative to each other.

[0072] The seat armrest folding locking mechanism provided in this embodiment of the invention, when the seat armrest is folded and retracted relative to the main body of the seat, is driven to rotate relative to the main body of the seat by external force or a driving device. This causes the first limiting device 7 and the second limiting device 3 to move relative to each other, and the second limiting surface 301 of the second limiting device 3 switches between correspondingly being set with the first limiting surface 701 and the first moving surface 702 of the first limiting device 7. When the first limiting surface 701 and the second limiting surface 301 are correspondingly set, the guiding device guides the first limiting device 7 and the second limiting device 3 to move closer to each other. The first limiting surface 701 and the second limiting surface 301 form a positioning and mating structure, so that the first limiting device 7 and the second limiting device 3 are locked relative to each other. This achieves the relative locking of the first limiting device 7 and the second limiting device 3, that is, directly positioning the seat armrest relative to the main body of the seat, effectively preventing the seat armrest from shaking, and thus avoiding problems such as abnormal noise caused by the shaking of the seat armrest.

[0073] Furthermore, when the seat armrest is unfolded relative to the main body of the seat, the seat armrest is also rotated relative to the main body of the seat by external force or driving device, so that the first limiting device 7 and the second limiting device 3 move relative to each other. When the second limiting surface 301 and the first moving surface 702 are set to correspond, the guide device guides the first limiting device 7 and the second limiting device 3 to move away from each other. The first moving surface 702 and the second limiting surface 301 form a relative moving structure, so that the first limiting device 7 and the second limiting device 3 can move relative to each other, thereby unlocking the positioning of the seat armrest and the main body of the seat, so that the seat armrest can unfold to the corresponding position under the action of gravity and other forces.

[0074] Furthermore, the first limiting device 7 includes an annular structure, with a first limiting surface 701 and a first moving surface 702 located on the inner wall of the annular structure and arranged circumferentially along the annular structure; the second limiting device 3 is located on the inner side of the annular structure, with the second limiting surface 301 facing the inner wall of the annular structure. The central axis of the first limiting device 7 is compatible with the rotation axis 4 of the seat armrest relative to the main body of the seat. This configuration further improves the structural compactness.

[0075] Of course, the first limiting device 7 can also be a block structure. The first limiting device 7 and the second limiting device 3 are located at the non-rotation axis 4 of the seat armrest and the main body of the seat. By locking and unlocking the first limiting device 7 and the second limiting device 3, the relative locking and unlocking between the seat armrest and the main body of the seat can also be achieved. This will not be described in detail here and is within the scope of protection.

[0076] like Figure 4 , Figure 5 and Figure 6 As shown, the first limiting device 7 further includes a guide plate located within the annular structure, the guide plate having a first guide structure 703; the second limiting device 3 has a second guide structure 302 that slides in cooperation with the first guide structure 703.

[0077] Preferably, the first guide structure 703 is an arc-shaped groove, the center of which coincides with the center of the annular structure. The second guide structure 302 is a protruding structure, capable of moving along the arc-shaped extension direction of the first guide structure 703 (circumferential direction of the annular structure), thereby switching between a state where the second limiting surface 301 corresponds to the first limiting surface 701 and a state where the second limiting surface 301 corresponds to the first moving surface 702. The width of the arc-shaped groove (radial direction of the annular structure) is greater than the width of the first guide structure 703, enabling the first guide structure 703 to move along the width direction of the arc-shaped groove, thereby achieving relative movement of the first limiting device 7 and the second limiting device 3 towards and away from each other.

[0078] Of course, the first guide structure 703 can also be set as a protruding structure and the second guide structure 302 can be set as a groove structure.

[0079] Alternatively, the first guide structure 703 can be configured as a sloping groove or a sloping block, and the second guide structure 302 can be configured as a structure that cooperates with its concave and convex parts to achieve a guiding function.

[0080] To improve the positioning effect, the first guide structure 703 is a groove structure with limiting surfaces at both ends; the second guide structure 302 is a boss structure, capable of making limiting contact with the limiting surfaces. It can be understood that when the second guide structure 302 is in limiting contact with the limiting surfaces, the second limiting surface 301 corresponds to the first limiting surface 701, thereby guiding the first limiting device 7 and the second limiting device 3 closer together under the action of the guide device, so that the first limiting surface 701 and the second limiting surface 301 form a positioning fit structure.

[0081] Of course, a limiting component or limiting structure can also be set separately, so that the second limiting device 3 is restricted from continuing to move along the arrangement direction of the first limiting surface 701 and the first moving surface 702 when the second limiting surface 301 is set in a state corresponding to the first limiting surface 701.

[0082] To improve the coordination effect, the number of second limiting devices 3 is multiple and they are arranged circumferentially along the ring structure.

[0083] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, there are three second limiting devices 3, namely one second high-position limiting device 31 and two second low-position limiting devices 32.

[0084] In this embodiment, the second limiting surface of the second high limiting device 31 is the second high limiting surface 311, which faces upward, and the second limiting surface of the second low limiting device 32 is the second low limiting surface 321, which faces downward.

[0085] To ensure the stability of the second high-position limiting device 31, the second guide structure of the second high-position limiting device 31 is a second high-position guide structure 312, which has a fan-shaped cross-sectional area. The second guide structure of the second low-position limiting device 32 is a second low-position guide structure 322, which has a circular cross-sectional area.

[0086] The difference between the second high-position limiting device 31 and the second low-position limiting device 32 can be determined by the length of the second guide structure thereon. For example, the length of the second high-position guide structure 312 is greater than the length of the second low-position guide structure 322.

[0087] The difference between the second high-position limiting device 31 and the second low-position limiting device 32 can also be their specific positions. For example, when the first limiting surface 701 and the second limiting surface 301 are correspondingly set, the second high-position limiting device 31 is located above the center line of the annular structure, and the second low-position limiting device 32 is located below the center line of the annular structure. That is, the second low-position limiting device 32 can approach the first limiting device 7 under the action of gravity, while the second high-position limiting device 31 needs to be additionally equipped with a device that can push it upward.

[0088] The cross-sectional diameter of the second low-position guide structure 322 is equal to the cross-sectional diameter of the second high-position guide structure 312.

[0089] Of course, the second high-position guide structure 312 and the second low-position guide structure 322 can also be set to other structures. No specific restrictions are imposed here, and all are within the scope of protection.

[0090] Both the second high-position limiting device 31 and the second low-position limiting device 32 have groove structures on their side walls.

[0091] The groove structure is used to improve impact resistance. Specifically, the hardness of the second high-position limiting device 31 and the second low-position limiting device 32 (slider) is higher than that of the slide plate 2. When the slider and the slide plate 2 impact each other, the slide plate 2 deforms (elastic deformation) and gets stuck in the groove structure of the slider, preventing the slider from retracting and failing.

[0092] like Figure 2 and Figure 3 As shown, when the first limiting surface 701 and the second limiting surface 301 are correspondingly set, the guide device can drive the first limiting device 7 and the second limiting device 3 to move closer to each other, and the first limiting surface 701 and the second limiting surface 301 are in concave-convex cooperation.

[0093] When the second limiting surface 301 is set in correspondence with the first moving surface 702, the guide device can drive the first limiting device 7 and the second limiting device 3 to move away from each other, and the first moving surface 702 and the second limiting surface 301 slide together.

[0094] That is, when the first limiting surface 701 and the second limiting surface 301 are correspondingly set, the first limiting device 7 and the second limiting device 3 are in relative contact to avoid the first limiting device 7 and the second limiting device 3 shaking and producing abnormal noise.

[0095] Preferably, the first limiting surface 701 and the second limiting surface 301 are meshing teeth that can mesh with each other; the first moving surface 702 is a smooth surface. Of course, the first limiting surface 701 and the second limiting surface 301 can also be configured as a concave-convex fit structure, for example, the first limiting surface 701 has a concave structure and the second limiting surface 301 has a convex surface that matches it.

[0096] The first moving surface 702 can also be a surface with a guide groove or a guide protrusion, wherein the guide groove or guide protrusion extends circumferentially along the annular structure of the first limiting device 7, and the first limiting surface 701 can cooperate with the guide groove or guide protrusion and move circumferentially along the annular structure of the first limiting device 7.

[0097] like Figure 1 , Figure 3 , Figure 11 and Figure 12 As shown, in the seat armrest folding locking mechanism provided in this embodiment of the invention, the guide device includes a cam component 5, a rotating shaft 4, and an elastic reset component.

[0098] The outer surface of the cam component 5 has a cam pushing surface 51, a guide pushing surface 52, and a clearance structure 53 that can contact the second guide structure 302. When the second guide structure 302 moves along the arrangement direction of the first limiting surface 701 and the first moving surface 702, it can push the cam pushing surface 51 to make the cam component 5 rotate. The guide pushing surface 52 can push the second guide structure 302 closer to the first limiting device 7. The clearance structure 53 can make the second guide structure 302 move away from the first limiting device 7 while in contact with the second guide structure 302. The rotating shaft 4 is coaxially connected to the cam component 5. The elastic reset assembly is connected to the rotating shaft 4 and is used to reset the cam component 5 and the first limiting device 7.

[0099] like Figure 13 and Figure 14 As shown, taking the cooperation between the second high-position limiting device 31 and the cam component 5 as an example:

[0100] The cam pushing surface 51 can push the second high-position limiting device 31 to move circumferentially along the first limiting device 7. Specifically, when the second high-position limiting device 31 is correspondingly set with the first limiting surface 701, it is limited circumferentially along the first limiting device 7. Under the reset action of the elastic reset component, the cam component 5 rotates clockwise to reset, the bottom structure of the second high-position limiting device 31 moves out of the avoidance structure 53, and the guide pushing surface 52 contacts the second high-position limiting device 31, thereby pushing the second high-position limiting device 31 upward, so that the second high-position limiting surface 311 cooperates with the first limiting surface 701 to form a locking structure.

[0101] A limiting guide surface 50 is also provided between the avoidance structure 53 and the guide pushing surface 52. The functions of the limiting guide surface 50 and the cam pushing surface 51 can be interchanged depending on the moving direction of the second high-position limiting device 31, which will not be described in detail here.

[0102] like Figure 12As shown, the rotating shaft 4 is interference-fitted with the cam component 5. Specifically, the inner bore of the cam component 5 has small teeth or a rough surface, and the shoulder 402 of the rotating shaft 4 is interference-fitted with the inner bore of the cam component 5.

[0103] In this embodiment, the elastic reset assembly includes a slide plate 2 and a reset spring 1. The slide plate 2 is fixed relative to the first limiting device, and the slide plate 2 has a first sliding structure. The second limiting device 3 is slidably engaged with the first sliding structure and can move in directions approaching and away from the first limiting device 7.

[0104] One end of the return spring 1 is connected to the rotating shaft 4 or the cam component 5, and the other end of the return spring 1 is fixed relative to the slide plate 2.

[0105] In this embodiment, the slide plate 2 is used to directly connect with one of the seat body and the seat armrest to realize the connection between the second limiting device 3 and the above-mentioned components (one of the seat body and the seat armrest).

[0106] The slide plate 2 has a positioning protrusion 21 on the side facing away from the second limiting device 3, and a positioning groove is provided on the mounting position of one of the seat body and the seat armrest to achieve the positioning of the slide plate 2.

[0107] like Figure 15 As shown, the return spring 1 is preferably a disc spring, with the inner end 11 of the disc spring being inserted into the positioning port 41 of the rotating shaft 4, and the outer end 12 of the disc spring being engaged with the hanging spring boss 22 of the slide plate 2.

[0108] like Figure 3 , Figure 16 and Figure 17 As shown, preferably, the guide device further includes an unlocking component 6, which has an unlocking surface 62 facing the outer surface of the cam component 5, and the second limiting device 3 is located between the unlocking surface 62 and the outer surface of the cam component 5.

[0109] The unlocking surface 62 has an unlocking push surface that can push the second guide structure 302 toward the avoidance structure 53.

[0110] The inner ring of the unlocking component 6 has a pawl 61, and the outer surface of the cam component 5 has a pawl groove 54. The pawl 61 and the pawl groove 54 cooperate to make the unlocking component 6 and the cam component 5 circumferentially positioned.

[0111] like Figure 18 and Figure 19As shown, the first guide structure 703 of the first limiting device 7 is a groove formed by stamping or other means. Thus, the side of the first limiting device 7 facing away from the first guide structure 703 forms a first positioning protrusion 704. When the first limiting device 7 is directly connected to the main body of the seat and the other armrest of the seat (the slide plate 2 is used to directly connect to one of the main body of the seat and the armrest of the seat), the main body of the seat and the other armrest of the seat have corresponding positioning grooves, so that the first limiting device 7 can be effectively positioned with them.

[0112] like Figure 20 and Figure 21 As shown, a protective sleeve 8 is provided on the outer side of the first limiting outer ring 705 of the first limiting device 7, and the inner wall 801 of the protective sleeve 8 is opposite to the first limiting outer ring 705 and there is a gap 802 between them.

[0113] Preferably, the sheath 8 can be positioned relative to the slide plate 2 to constrain the relative movement of the first limiting device 7 and the slide plate 2 in the axial direction.

[0114] The present invention also provides a seat, including a seat body and seat armrests, and further including any of the seat armrest folding locking mechanisms described above. Since the aforementioned seat armrest folding locking mechanisms have the above-described technical effects, a seat having the aforementioned seat armrest folding locking mechanisms should also have the same technical effects, and will not be described in detail here.

[0115] To ensure stability, the seat armrests are rotatably connected to the seat body via a connecting shaft. A seat armrest folding and locking mechanism can be installed at one end of the connecting shaft. That is, a seat armrest folding and locking mechanism is installed on one side of the seat armrest, and the relative control between the seat armrest and the seat body is achieved through a single seat armrest folding and locking mechanism to lock the seat armrest.

[0116] The other end of the connecting shaft may not have any other structure, only enabling a rotatable connection between the seat armrest and the seat body. Alternatively, other structures may be provided at the other end of the connecting shaft; these will not be described in detail here and are all within the scope of protection.

[0117] Alternatively, a folding locking mechanism can be installed on both sides of the seat armrest. That is, a folding locking mechanism can be installed at both ends of the connecting shaft.

[0118] like Figure 11 , Figure 22 and Figure 23As shown, there are two seat armrest folding locking mechanisms 100, symmetrically installed on both sides of the connecting shaft 200. The two ends of the connecting shaft 200 are square tubes, which are positioned and engaged with the ends of the rotating shaft 4 of the seat armrest folding locking mechanism 100. The two sides of the armrest frame 300 of the seat armrest are respectively engaged with the two seat armrest folding locking mechanisms 100.

[0119] Furthermore, the number of armrests is two, and they are symmetrically arranged on both sides of the seat body.

[0120] In the first embodiment, both armrests are connected to the seat body via an armrest folding locking mechanism. That is, the armrest folding locking mechanism is applied to the armrests on both sides of the seat.

[0121] In the second embodiment, one of the two armrests is connected to the seat body via a folding locking mechanism. The other armrest can be fixedly connected to the seat body, or it can be connected to the seat body via other connecting mechanisms.

[0122] In the third embodiment, there is one armrest located on one side of the seat body, and the armrest is connected to the seat body via a folding locking mechanism. That is, the seat has an armrest on one side, while the other side is unused. This embodiment is particularly suitable for installation in vehicles. Specifically, the armrest is located on the inner side of the seat.

[0123] The present invention also provides a vehicle including a seat, which is the seat described above. Similarly, the vehicle described above has the same technical effects as the seat described above, and will not be described in detail here.

[0124] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0125] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A folding locking mechanism for a seat armrest, characterized in that, include: A first limiting device, comprising a first limiting surface and a first movable surface; The second limiting device includes a second limiting surface that can be disposed corresponding to the first limiting surface and the first moving surface; one of the first limiting device and the second limiting device is used to connect with the main body of the seat, and the other is used to connect with the armrest of the seat. A guiding device, which can guide the first limiting device and the second limiting device to move closer and further apart; in, When the first limiting surface and the second limiting surface are respectively set, the guiding device guides the first limiting device and the second limiting device to move closer to each other, and the first limiting surface and the second limiting surface form a positioning and mating structure, so that the first limiting device and the second limiting device are locked relative to each other. When the second limiting surface is set in correspondence with the first moving surface, the guiding device guides the first limiting device and the second limiting device to move away from each other, and the first moving surface and the second limiting surface form a relative moving structure, so that the first limiting device and the second limiting device can move relative to each other.

2. The seat armrest folding locking mechanism as described in claim 1, characterized in that, The first limiting device includes an annular structure, and the first limiting surface and the first moving surface are located on the inner wall of the annular structure and arranged along the circumference of the annular structure; The second limiting device is located inside the annular structure, and the second limiting surface faces the inner wall of the annular structure.

3. The seat armrest folding locking mechanism as described in claim 2, characterized in that, The first limiting device further includes a guide plate located within the annular structure, the guide plate having a first guiding structure; The second limiting device has a second guide structure that slides in cooperation with the first guide structure.

4. The seat armrest folding locking mechanism as described in claim 3, characterized in that, The first guide structure is a groove structure with limiting surfaces at both ends; The second guide structure is a boss structure, and the second guide structure can make limiting contact with the limiting surface.

5. The seat armrest folding locking mechanism as described in claim 2, characterized in that, The number of the second limiting devices is multiple and they are arranged circumferentially along the ring structure.

6. The seat armrest folding locking mechanism as described in any one of claims 1-5, characterized in that, When the first limiting surface and the second limiting surface are respectively provided, the guide device can drive the first limiting device and the second limiting device to move closer to each other, and the first limiting surface and the second limiting surface are in concave-convex cooperation. When the second limiting surface is set in correspondence with the first moving surface, the guide device can drive the first limiting device and the second limiting device to move away from each other, and the first moving surface and the second limiting surface slide together.

7. The seat armrest folding locking mechanism as described in claim 6, characterized in that, The first limiting surface and the second limiting surface are meshing teeth that can engage with each other; The first movable surface is a smooth surface.

8. The seat armrest folding locking mechanism as described in claim 6, characterized in that, The guiding device includes: A cam component, the outer surface of which has a cam pushing surface, a guide pushing surface, and a clearance structure that can contact the second guide structure of the second limiting device. When the second guide structure moves along the arrangement direction of the first limiting surface and the first moving surface, it can push the cam pushing surface to make the cam component rotate. The guide pushing surface can push the second guide structure closer to the first limiting device. The clearance structure can make the second guide structure move away from the first limiting device while in contact with the second guide structure. A rotating shaft coaxially connected to the cam component; An elastic reset assembly connected to the rotating shaft is used to reset the cam component and the first limiting device.

9. The seat armrest folding locking mechanism as described in claim 8, characterized in that, The elastic reset component includes: A slide plate fixed relative to the first limiting device, the slide plate having a first sliding structure, the second limiting device slidingly engaging with the first sliding structure and being able to move in directions approaching and away from the first limiting device; A return spring, one end of which is connected to the rotating shaft or the cam component, and the other end of which is fixed relative to the slide plate.

10. The seat armrest folding locking mechanism as described in claim 8 or 9, characterized in that, The guide device further includes an unlocking component having an unlocking surface facing the outer surface of the cam component, and the second limiting device is located between the unlocking surface and the outer surface of the cam component; The unlocking surface has an unlocking push surface capable of pushing the second guide structure toward the avoidance structure.

11. A seat, comprising a seat body and seat armrests, characterized in that, It also includes the seat armrest folding locking mechanism as described in any one of claims 1-10.

12. The seat as claimed in claim 11, characterized in that, The armrest of the seat is rotatably connected to the body of the seat via a connecting shaft; The seat armrest folding locking mechanism is provided at one end of the connecting shaft; or, the seat armrest folding locking mechanism is provided at both ends of the connecting shaft.

13. A vehicle, including a seat, characterized in that, The seat is the seat as described in claim 11 or 12.

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