Seat lock mechanism and vehicle

Abstract

The application relates to a seat locking mechanism and a vehicle, the seat locking mechanism comprising a cam, a stop piece and a limiting assembly, the cam comprising a main body part and a protruding part, the protruding part being connected to the main body part and rotating synchronously with the main body part, the circumferential surface of the main body part being concave to form an avoiding groove, the cam being configured to rotate around the axial direction of the main body part in a first direction and a second direction; the stop piece being fixedly arranged on one side of the main body part, and the stop piece being located on the rotating path of the protruding part rotating in the first direction; the limiting assembly being located on one side of the main body part, and the limiting assembly comprising a rotatable limiting crank, when the avoiding groove is located on the limiting crank, the limiting crank can be at least partially inserted into the avoiding groove to abut against the main body part in the second direction. The rotating angle of the protruding part rotating in the first direction to abut against the stop piece is equal to the rotating angle of the main body part rotating in the first direction to align the avoiding groove with the limiting crank. The above scheme avoids the shaking of the seat after being folded to affect the user experience.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to seat locking mechanisms and vehicles. Background Technology

[0002] With the upgrading of the automotive consumer market, high-end MPVs, with their comfortable driving experience and flexible space layout, are showing strong market demand in the business travel and family car sectors. In particular, as users' requirements for the utilization of interior space continue to increase, the folding and flipping function of the three rows of seats has become a key technology for optimizing interior space. It can effectively meet the needs of diverse usage scenarios such as carrying passengers and cargo, and is of great significance to improving the practicality and market competitiveness of vehicles.

[0003] Currently, the technology for folding and tilting three-row seats into the pit is widely used in the market, with the technical solutions mainly divided into two types: electric and manual. Electric tilting solutions are commonly found in luxury MPVs. This technology uses a motor to drive precise seat folding and relies on a motor locking function to fix the seats in the target position, providing users with a convenient and smooth operating experience. Manual tilting solutions, on the other hand, have gained a certain share in the economy MPV market due to their simple structure and controllable cost. They use a cable structure for unlocking, requiring manual force to tilt the seats backward into the pit.

[0004] However, existing technologies still have significant limitations. Electric folding solutions rely on complex motor drives and locking systems, resulting in high component costs and limiting the widespread application of this technology in low- and mid-range vehicles. While manual folding and seat-in-the-pit solutions offer cost advantages, the lack of a reliable locking mechanism means that the seats cannot be securely fixed after folding and sinking, making them prone to wobbling during vehicle operation. This not only affects passenger comfort but also poses safety hazards, failing to meet users' requirements for seat stability and safety. Utility Model Content

[0005] Therefore, it is necessary to provide a seat locking mechanism and vehicle to address the problem that existing vehicles cannot simultaneously achieve both stable rear seat flip-locking and economical costs.

[0006] A seat locking mechanism includes a cam, a stop, and a limiting assembly. The cam includes a main body and a protrusion. The protrusion is connected to the main body and rotates synchronously with it, protruding from the circumferential surface of the main body. A clearance groove is recessed on the circumferential surface of the main body. The cam is configured to rotate about the axial direction of the main body in a first direction and a second direction, the first and second directions being opposite. The stop is fixedly disposed on one side of the main body and is located on the rotation path of the protrusion in the first direction. The limiting assembly is located on one side of the main body and includes a rotatable limiting crank. When the clearance groove is aligned with the limiting crank, the limiting crank can at least partially insert into the clearance groove to abut against the main body in the second direction. The rotation angle of the protrusion in the first direction to abut against the stop is equal to the rotation angle of the main body in the first direction to align with the limiting crank.

[0007] In one embodiment, the limiting crank includes a limiting portion located at one end of the limiting crank near the main body portion, the limiting portion having a tendency to rotate toward the direction of the main body portion to abut against the circumferential surface of the main body portion.

[0008] In one embodiment, the limiting portion is located above the main body portion and overlaps the peripheral surface of the main body portion.

[0009] In one embodiment, the limiting component further includes an elastic element connected to the limiting crank and having a tendency to drive the limiting portion to rotate toward the direction of the main body portion to abut against the circumferential surface of the main body portion.

[0010] In one embodiment, the seat locking mechanism includes an unlocking member connected to the limiting crank, the unlocking member being connected to the limiting crank and capable of rotating the limiting crank to move out of the clearance groove.

[0011] In one embodiment, the limiting crank includes an unlocking part located at one end of the limiting crank away from the main body, and the unlocking member acts on the unlocking part and drives the limiting crank to rotate.

[0012] In one embodiment, the unlocking element is a pull rope connected to the unlocking part, and the pull rope is capable of transmitting a pulling force to rotate the unlocking part.

[0013] In one embodiment, the seat locking mechanism further includes a pull strap connected to the end of the pull cord away from the unlocking part.

[0014] A vehicle includes a seat locking mechanism as described in any of the above embodiments, and also includes a seat, the seat being rotatably disposed, the seat having a folded state, a cam being connected to the seat and rotating coaxially and synchronously, wherein when the seat is in the folded state, the protrusion abuts against the stop member in a first direction, and the main body abuts against a limiting component in a second direction.

[0015] In one embodiment, the seat is connected to a seat locking mechanism at each end of the rotation axis.

[0016] The seat locking mechanism provided in the above solution uses a stop on the first direction rotation path of the cam's protrusion and an clearance groove in the main body. A limiting crank that can rotate and insert into the clearance groove is provided on one side of the main body. By limiting the rotation angle between the protrusion and the stop and between the clearance groove and the limiting crank, when the protrusion abuts against the stop, the clearance groove is exactly aligned with the limiting crank. At this time, the limiting crank inserts into the clearance groove, thereby locking the cam in the first direction while the stop locks the cam in the second direction, achieving bidirectional locking of the cam. This ensures the height position of the seat after it enters the placement space and the stability of the seat after it is flipped and folded, preventing the seat from shaking after flipping and folding and affecting the user experience. At the same time, this solution adopts a simple structure, can be unlocked manually, has low production cost, and is easy to promote and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a seat in a vehicle according to one embodiment of this application.

[0018] Figure 2 for Figure 1 A structural diagram of the seat in its folded state.

[0019] Figure 3 This is a schematic diagram of the seat locking mechanism in one embodiment of this application.

[0020] Figure 4 for Figure 3 A structural schematic diagram of the seat locking mechanism from another perspective.

[0021] Figure 5 for Figure 3 Another structural schematic diagram of the seat locking mechanism.

[0022] Figure 6 for Figure 2 Diagram showing the status of the middle seat and seat locking mechanism Figure 1 .

[0023] Figure 7 for Figure 2 Diagram showing the status of the middle seat and seat locking mechanism Figure 2 .

[0024] Figure 8 for Figure 2 A structural schematic diagram of the seat from another perspective.

[0025] Figure 9 for Figure 8 Another structural diagram of the middle seat.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Seat locking mechanism; 110. Cam; 111. Main body; 1111. Clearance groove; 112. Protrusion; 120. Stop; 130. Limiting component; 131. Limiting crank; 1311. Limiting part; 1312. Unlocking part; 140. Unlocking element; 150. Strap; 200. Seat; 210. Backrest; 220. Seat cushion; 300. Floor; 400. Trunk; 500. Support. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figures 1 to 9 This illustration shows a partial structural diagram of a vehicle according to one embodiment of this application. The vehicle provided in this embodiment can be of any model and can employ any power source; no limitation is imposed. Figure 1 As shown, the vehicle includes a seat locking mechanism 100 as described in any of the following embodiments, and also includes a seat 200, a floor 300, and a trunk 400. In this embodiment, the seat 200 is connected between the trunk 400 and the floor 300, and the trunk 400 has a storage space for placing the seat 200 in a folded-down state. Figure 2 As shown, the seat 200 is rotatably mounted, and the seat 200 has the following features: Figure 2 As shown in the folded state, when seat 200 is folded, it is located within the storage space. It is understood that seat 200 also includes, for example, […]. Figure 1In the normal seating position shown, optionally, when the seat 200 is in the normal seating position, the seat 200 is fixed in position by being fixedly connected to the floor 300.

[0035] like Figure 2 As shown, in one embodiment, the seat 200 is connected to a seat locking mechanism 100 at each end of the rotation axis, thereby making the seat 200 more stable when it is in the flipped and folded state.

[0036] Combination Figure 3 and Figure 4 As shown, an embodiment of this application provides a seat locking mechanism 100, which can be applied to the aforementioned vehicle. In this embodiment, the seat locking mechanism 100 is fixedly connected to the floor 300 via a support 500, achieving a fixed installation of the entire mechanism. The seat locking mechanism 100 includes a cam 110, a stop member 120, and a limiting assembly 130. The cam 110 includes a main body 111 and a protrusion 112. The protrusion 112 is connected to the main body 111 and rotates synchronously with the main body 111. The protrusion 112 protrudes from the circumferential surface of the main body 111, combining with... Figure 4 and Figure 5 As shown, the peripheral surface of the main body 111 is recessed with a relief groove 1111.

[0037] Combination Figures 6 to 7 The cam 110 is configured to rotate about the axis of the main body 111 in a first direction and a second direction, which are opposite to each other. In this application specification and drawings, the first direction is described and illustrated as counterclockwise and the second direction is clockwise, but this is not intended to be limiting.

[0038] Combination Figure 6 and Figure 7 As shown, the cam 110 is connected to the seat 200 and rotates synchronously on the same axis, so that when the seat 200 flips, it can drive the cam 110 to rotate at the same angle.

[0039] like Figures 3 to 5 As shown, the stop member 120 is fixedly disposed on one side of the main body 111, and the stop member 120 is located on the rotation path of the protrusion 112 in the first direction. When the protrusion 112 rotates in the first direction to abut against the stop member 120, the stop member 120 can prevent the protrusion 112 from continuing to rotate in the first direction, thereby achieving the effect of locking the cam 110 in the first direction.

[0040] like Figures 3 to 5 As shown, the limiting component 130 is located on one side of the main body 111, and the limiting component 130 includes a rotatable limiting crank 131, combined with Figure 6As shown, when the clearance groove 1111 is positioned relative to the limiting crank 131, the limiting crank 131 can at least partially insert into the clearance groove 1111 to abut against the main body 111 in the second direction. When the limiting crank 131 is partially inserted into the clearance groove 1111, the groove wall of the clearance groove 1111 and the limiting crank 131 abut against each other in the second direction, thereby preventing the main body 111 from continuing to rotate in the second direction, thus achieving the effect of locking the cam 110 in the second direction.

[0041] The rotation angle of the protrusion 112 in the first direction to abut against the stop 120 is equal to the rotation angle of the main body 111 in the first direction to align with the limiting crank 131 in the clearance groove 1111. This ensures that when the protrusion 112 abuts against the stop 120, the clearance groove 1111 is exactly aligned with the limiting crank 131. At this time, the limiting crank 131 partially inserts into the clearance groove 1111, thereby locking the cam 110 in the first direction while the limiting crank 131 locks the cam 110 in the second direction, achieving bidirectional locking of the cam 110. This ensures the height position of the seat 200 after it enters the placement space and the stability of the seat 200 after it is flipped and folded.

[0042] Combination Figure 6 As shown, when the seat 200 is in the folded state, the protrusion 112 abuts against the stop member 120 in the first direction, and the main body 111 abuts against the limiting component 130 in the second direction. The stop member 120 locks the cam 110 in the first direction, and the limiting crank 131 locks the cam 110 in the second direction, thereby achieving bidirectional locking of the cam 110. This ensures the height position of the seat 200 after it enters the placement space and the stability of the seat 200 after it is flipped and folded, preventing the seat 200 from shaking after it is flipped and folded, which would affect the user experience.

[0043] like Figures 3 to 7 As shown, in one embodiment, the limiting crank 131 includes a limiting part 1311, which is located at one end of the limiting crank 131 near the main body 111. The limiting part 1311 has a tendency to rotate toward the direction of the main body 111 to abut against the circumferential surface of the main body 111, so that when the clearance groove 1111 is aligned with the limiting crank 131, the limiting crank 131 can be directly partially inserted into the clearance groove 1111, thereby achieving the effect of automatically locking the cam 110 in the second direction when the clearance groove 1111 and the limiting crank 131 are aligned.

[0044] like Figures 3 to 7 As shown, in one embodiment, the limiting part 1311 is located above the main body part 111, the limiting part 1311 overlaps the peripheral surface of the main body part 111, and the limiting part 1311 has a tendency to rotate toward the direction of the main body part 111 under the action of gravity to abut against the peripheral surface of the main body part 111.

[0045] In one embodiment, the limiting assembly 130 further includes an elastic element (not shown) connected to the limiting crank 131, which tends to rotate the limiting portion 1311 toward the direction of the main body 111 to abut against the circumferential surface of the main body 111. This results in a greater contact force between the limiting portion 1311 and the groove wall of the clearance groove 1111, thereby improving the locking effect of the limiting portion 1311 on the cam 110 in the second direction. Exemplarily, the elastic element may be a torsion spring acting on the limiting crank 131.

[0046] like Figures 3 to 7 As shown, in one embodiment, the seat locking mechanism 100 includes an unlocking member 140 connected to a limiting crank 131. The unlocking member 140 is connected to the limiting crank 131 and can drive the limiting crank 131 to rotate and move out of the clearance groove 1111. (As shown in Figure 6 and...) Figure 7 At the angle shown in the diagram, the unlocking component 140 can drive the limiting crank 131 to rotate counterclockwise, thereby moving it out of the clearance groove 1111. At this time, the locking state of the cam 110 in the second direction is released, and the seat 200 can move as shown in the diagram. Figure 7 As shown, flip upwards.

[0047] like Figures 3 to 7 As shown, in one embodiment, the limiting crank 131 includes an unlocking part 1312, which is located at the end of the limiting crank 131 away from the main body 111, as shown. Figure 6 and Figure 7 As shown, the unlocking part 1312 and the limiting part 1311 are located on both sides of the rotation axis of the limiting crank 131. The unlocking member 140 acts on the unlocking part 1312 and drives the limiting crank 131 to rotate. The unlocking member 140 has a pulling force that drives the unlocking part 1312 to rotate downward, thereby realizing the clockwise rotation of the unlocking part 1312. In other embodiments, the unlocking member 140 may also act directly on the limiting part 1311 and drive the limiting part 1311 to rotate upward clockwise.

[0048] like Figures 3 to 7 As shown, in one embodiment, the unlocking element 140 is a pull rope connected to the unlocking part 1312, and the pull rope can transmit the pulling force to rotate the unlocking part 1312. In other embodiments, the unlocking element 140 may also be a drive telescopic rod, etc.

[0049] like Figure 6 and Figure 7 As shown, in one embodiment, the seat locking mechanism 100 further includes a pull strap 150, which is connected to the end of the pull cord away from the unlocking part 1312. Figure 1 As shown, the seat 200 includes a seat cushion 220 and a backrest 210, as... Figure 8As shown, the pull cord is wrapped around the seat cushion 220 of the seat 200, and the pull strap 150 protrudes from the seat cushion 220 to facilitate... Figure 6 and Figure 7 With the seat 200 folded down, pulling the strap 150 causes the limit crank 131 to rotate, thereby unlocking the cam 110 in the second direction.

[0050] The seat locking mechanism 100 provided in the above solution provides a stop 120 on the first direction rotation path of the protrusion 112 of the cam 110, and a relief groove 1111 on the main body 111. A limiting crank 131 that can rotate and insert into the relief groove 1111 is provided on one side of the main body 111. By limiting the rotation angle between the protrusion 112 and the stop 120 and the rotation angle between the relief groove 1111 and the limiting crank 131, the relief groove 1111 is precisely aligned with the stop 120 when the protrusion 112 abuts against the stop 120. Located at the limiting crank 131, the limiting crank 131 partially inserts into the clearance groove 1111, thereby achieving the locking of the cam 110 in the first direction by the stop 120, and the locking crank 131 locking the cam 110 in the second direction, realizing the bidirectional locking of the cam 110. This ensures the height position of the seat 200 after it enters the placement space and the stability of the seat 200 after it is flipped and folded, preventing the seat 200 from shaking after flipping and folding and affecting the user experience. At the same time, this solution adopts a simple structure, can be unlocked manually, has low production cost, and is easy to promote and use.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A seat locking mechanism (100), characterized in that, The seat locking mechanism (100) includes: A cam (110) includes a main body (111) and a protrusion (112). The protrusion (112) is connected to the main body (111) and rotates synchronously with the main body (111). The protrusion (112) protrudes from the circumferential surface of the main body (111). The circumferential surface of the main body (111) is recessed with a relief groove (1111). The cam (110) is configured to rotate about the axial direction of the main body (111) in a first direction and a second direction, wherein the first direction and the second direction are opposite. A stop (120) is fixedly disposed on one side of the main body (111), and the stop (120) is located on the rotation path of the protrusion (112) in the first direction; and A limiting component (130) is located on one side of the main body (111), and the limiting component (130) includes a rotatable limiting crank (131). When the relief groove (1111) is located on the limiting crank (131), the limiting crank (131) is at least partially able to be inserted into the relief groove (1111) to abut against the main body (111) in a second direction. The rotation angle of the protrusion (112) in the first direction to abut against the stop (120) is equal to the rotation angle of the main body (111) in the first direction to align the clearance groove (1111) with the limiting crank (131).

2. The seat locking mechanism (100) according to claim 1, characterized in that, The limiting crank (131) includes a limiting part (1311) located at one end of the limiting crank (131) near the main body (111), and the limiting part (1311) has a tendency to rotate toward the direction of the main body (111) to abut against the circumferential surface of the main body (111).

3. The seat locking mechanism (100) according to claim 2, characterized in that, The limiting part (1311) is located above the main body part (111), and the limiting part (1311) overlaps the peripheral surface of the main body part (111).

4. The seat locking mechanism (100) according to claim 2 or 3, characterized in that, The limiting component (130) further includes an elastic element connected to the limiting crank (131) and having a tendency to drive the limiting part (1311) to rotate in the direction of the main body part (111) to abut against the circumferential surface of the main body part (111).

5. The seat locking mechanism (100) according to claim 1, characterized in that, The seat locking mechanism (100) includes an unlocking member (140) connected to the limiting crank (131). The unlocking member (140) is connected to the limiting crank (131) and can drive the limiting crank (131) to rotate to move out of the clearance groove (1111).

6. The seat locking mechanism (100) according to claim 5, characterized in that, The limiting crank (131) includes an unlocking part (1312), which is located at the end of the limiting crank (131) away from the main body (111). The unlocking member (140) acts on the unlocking part (1312) and drives the limiting crank (131) to rotate.

7. The seat locking mechanism (100) according to claim 6, characterized in that, The unlocking component (140) is a pull rope, which is connected to the unlocking part (1312) and can transmit the pulling force that pulls the unlocking part (1312) to rotate.

8. The seat locking mechanism (100) according to claim 7, characterized in that, The seat locking mechanism (100) also includes a pull strap (150) connected to the end of the pull cord away from the unlocking part (1312).

9. A vehicle, characterized in that, The system includes a seat locking mechanism (100) as described in any one of claims 1-8, and a seat (200) rotatably disposed, the seat (200) having a folded state, the cam (110) being connected to the seat (200) and rotating coaxially and synchronously, wherein when the seat (200) is in the folded state, the protrusion (112) abuts against the stop member (120) in a first direction, and the main body (111) abuts against the limiting assembly (130) in a second direction.

10. The vehicle according to claim 9, characterized in that, The seat (200) is connected to a seat locking mechanism (100) at each end of the rotation axis.

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