Seat transverse movement state switching mechanism and passenger vehicle seat comprising same

Abstract

This application discloses a seat lateral movement state switching mechanism and a bus seat including the same. The mechanism is mounted on a seat frame and used to switch the seat's state. It includes: a connecting plate disposed between parallel and opposite seat frames, with a limiting stop on the connecting plate; a switching plate disposed on the connecting plate, comprising a pressing plate and an unlocking plate, with a non-zero included angle between the pressing plate and the unlocking plate; the pressing plate protruding relative to the seat frame; the unlocking plate extending between adjacent seat frames; and a limiting hole corresponding to the limiting stop on the unlocking plate, which engages with the limiting stop; the pressing plate, when pressed, can disengage the unlocking plate from the limiting stop; and an elastic element disposed on the unlocking plate, having an abutting end that abuts against the seat to provide a force for engaging the unlocking plate with the limiting stop when the pressing plate is released, thereby achieving convenient unlocking and locking of the seat.

Description

Technical Field

[0001] This application relates to the field of vehicle seat adjustment devices, and particularly to a seat lateral movement state switching mechanism and a bus seat including the same. Background Technology

[0002] Regarding the unlocking and locking functions of seat lateral movement, existing technologies mainly have the following drawbacks:

[0003] Regarding the slide rail structure, the slide rail lateral movement and open structure make it easier to maintain, but there is a risk of foreign object intrusion; the lateral stiffness is poor, and the 0.5mm track gap is relatively large, which can easily cause shaking; when the slide rail moves out laterally, the upper and lower rails will be misaligned, affecting the strength and making them easy to peel off; the ball bearing circulation friction leads to increased wear and tear, and the accuracy will decrease after long-term use.

[0004] Regarding the separate unlocking mechanism, placing it at the front of the seat results in an external design that affects the overall aesthetics of the seat; the upward-pushing operation is not ergonomic and cannot achieve button-press unlocking, making it inconvenient to operate. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a seat lateral movement state switching mechanism and a bus seat including the same, which is mounted on a seat frame and used to switch the seat's state. The seat lateral movement state switching mechanism includes:

[0006] A connecting plate is disposed between the parallel and oppositely arranged seat frames, and the connecting plate is provided with limiting points;

[0007] A switching plate is disposed on the connecting plate. The switching plate includes a pressing plate and an unlocking plate. A non-zero included angle is provided between the pressing plate and the unlocking plate. The pressing plate protrudes relative to the seat frame, and the unlocking plate extends between adjacent seat frames. The unlocking plate has a limiting hole corresponding to the limiting stop point, and the limiting hole can engage with the limiting stop point. The pressing plate can drive the unlocking plate to disengage from the limiting stop point when pressed.

[0008] An elastic element is disposed on the unlocking plate. The elastic element has an abutting end that abuts against the seat to provide a force for engaging the unlocking plate with the limiting stop when the pressing element is released.

[0009] Preferably, a bushing is provided on the limiting stop to reduce noise during the assembly and disassembly of the limiting hole and the limiting stop.

[0010] Preferably, the bushing is made of polyurethane and has a thickness in the range of 1-3 mm.

[0011] Preferably, it also includes a mounting plate, which includes a plate body and two protrusions. The two protrusions are disposed opposite to each other at both ends of the plate body. The protrusions are provided with mounting holes. The mounting plate is connected to the unlocking plate by bolts passing through the mounting holes.

[0012] The elastic element is wound around the bolt, the plate body and the seat are fixedly connected, the plate body is provided with a through hole, and the abutting end passes through the through hole and abuts against the seat.

[0013] Preferably, the seat also includes a transverse guide rod disposed on the seat frame and parallel to the seat frame, wherein the seat is connected to the guide rod so as to be able to move along the extension direction of the guide rod while the press plate is pressed.

[0014] Preferably, the stiffness coefficient of the elastic element is between 10 and 20 N / mm.

[0015] Preferably, the pressing stroke of the pressing element is in the range of 8-12mm, so that the unlocking plate can be flipped 5°-10°.

[0016] Preferably, the limiting stop is made of Q235 steel with a thickness of 2-5mm.

[0017] A passenger seat, comprising the seat lateral movement state switching mechanism described in any of the preceding claims.

[0018] Preferably, the seat lateral movement switching mechanism is symmetrically arranged in the armrests on both sides of the seat.

[0019] Based on the above technical solution, the seat lateral movement state switching mechanism and the bus seat including the same described in this application have the following beneficial effects:

[0020] Through the linked design of the pressing plate and the unlocking plate, the seat can be easily unlocked and locked by simply pressing the pressing plate, switching between fixed and movable states. The entire operation is simple and intuitive, requiring no complicated steps or additional tools. Furthermore, the limiting points on the connecting plate and the limiting holes on the unlocking plate work together to reliably engage when the unlocking plate is subjected to the force of the elastic element, firmly fixing the seat in the predetermined position and preventing accidental movement during travel, thus ensuring passenger safety. Compared to traditional unlocking mechanisms, this pressing design is more ergonomic, easier and less strenuous to operate, and the cushioning effect of the elastic element reduces impact and noise during unlocking and locking, improving passenger comfort and quietness. In addition, the mechanism has a simple structure and fewer parts, facilitating manufacturing, installation, and maintenance, reducing the failure rate and extending service life. In summary, the seat lateral movement switching mechanism, through its ingenious structural design, achieves convenient unlocking and locking of the seat, improving seat reliability and safety, while also enhancing passenger comfort and experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a partial structural diagram of the seat lateral movement state switching mechanism provided in the embodiments of this application.

[0023] Figure 2 yes Figure 1 The cross-sectional view at point AA.

[0024] Figure 3 This is a schematic diagram of the overall structure of the seat lateral movement state switching mechanism provided in the embodiments of this application.

[0025] Figure 4 yes Figure 3 Cross-sectional view at point BB.

[0026] Figure 5 This is a three-dimensional structural diagram of the seat lateral movement switching mechanism.

[0027] The reference numerals in the attached drawings are as follows: 100, seat frame; 11, seat bracket; 200, seat lateral movement switching mechanism; 21, connecting plate; 211, limit stop; 22, switching plate; 221, unlocking plate; 222, pressing plate; 223, limit hole; 23, elastic element; 231, abutting end; 24, mounting plate; 241, plate body; 242, protrusion; 243, through hole; 244, bolt; 25, lateral movement guide rod; X, pressing direction of the pressing plate; Y, flipping direction of the unlocking plate. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0030] like Figures 1-5 As shown in the figure, this application discloses a seat lateral movement state switching mechanism 200, which is disposed on the seat frame 100 and used to switch the state of the seat. The figure shows a seat bracket 11, and the seat is connected to the seat lateral movement state switching mechanism 200 through the seat bracket 11. The seat lateral movement state switching mechanism 200 includes:

[0031] A connecting plate 21 is disposed between the parallel and oppositely arranged seat frames 100, and a limiting stop 211 is provided on the connecting plate 21;

[0032] A switching plate 22 is disposed on the connecting plate 21. The switching plate 22 includes a pressing plate 222 and an unlocking plate 221. The pressing plate 222 and the unlocking plate 221 have a non-zero included angle. The pressing plate 222 protrudes relative to the seat frame 100. The unlocking plate 221 extends into the space between adjacent seat frames 100. The unlocking plate 221 has a limiting hole 223 corresponding to the limiting stop 211. The limiting hole 223 can engage with the limiting stop 211. The pressing plate 222 can drive the unlocking plate 221 to disengage from the limiting stop 211 when pressed.

[0033] An elastic element 23 is disposed on the unlocking plate 221. The elastic element 23 has an abutting end 231, which abuts against the seat to provide a force for engaging the unlocking plate 221 with the limiting stop 211 when the pressing element is released.

[0034] It is understandable that the connecting plate 21 is installed between the two seat frames 100 to serve as a connection and support. The connecting plate 21 is provided with a limit stop 211 to lock the unlocking plate 221, thereby fixing the switching plate 22 and the elastic element 23.

[0035] It is understood that the switching plate 22 is a bent structure, and the pressing plate 222 is the end for pressing operation. There is an angle between the pressing plate 222 and the unlocking plate 221. This angle design makes it easier for the pressing plate 222 to be pressed down, and thus makes it easier for the unlocking plate 221 to be flipped. Therefore, the pressing plate 222 protrudes from the seat frame 100 for easy operation. The unlocking plate 221 extends into the seat frame 100 and interacts with the limiting stop 211 on the connecting plate 21. Furthermore, the unlocking plate 221 has a limiting hole 223, the position and size of which correspond to the limiting stop 211 on the connecting plate 21. When the unlocking plate 221 is flipped to the appropriate position, the limiting hole 223 can engage with the limiting stop 211 to fix the seat.

[0036] Therefore, the working principle of the seat lateral movement switching mechanism 200 is as follows: When the pressing plate 222 is pressed, through the special structural design of the switching plate 22, the pressing plate 222 will drive the unlocking plate 221 to flip, so that the unlocking plate 221 overcomes the locking force of the limit stop 211, thereby disengaging the connection between the unlocking plate 221 and the limit stop 211, thus unlocking the seat; if the seat needs to be moved, the pressing plate 222 needs to be pressed continuously; when the pressing plate 222 is released, the elastic element 23 will generate elastic force, pushing the unlocking plate 221 to flip back to the initial state, so that the limit hole 223 engages with the limit stop 211 again, thereby fixing the seat.

[0037] Preferably, the connecting plate 21 can be a long strip of metal plate, with both ends fixed between the two seat frames 100 by bolts 244, or welded between the two seat frames 100; the limiting stop point 211 can be a small protrusion or pin welded on the connecting plate 21 or fixed by other means.

[0038] Therefore, by adopting the above-described structure and through the linkage design of the pressing plate 222 and the unlocking plate 221, the seat can be easily unlocked and locked simply by pressing the pressing plate 222, thus switching between fixed and movable states. The entire operation is simple and intuitive, requiring no complicated steps or additional tools. Furthermore, the limiting stop 211 on the connecting plate 21 and the limiting hole 223 on the unlocking plate 221 cooperate with each other, reliably engaging when the unlocking plate 221 is subjected to the force of the elastic element 23, firmly fixing the seat in the predetermined position and preventing accidental movement during travel, ensuring passenger safety. At the same time, compared to traditional unlocking mechanisms, this pressing design is more ergonomic, easier and less strenuous to operate, and the cushioning effect of the elastic element 23 reduces impact and noise during unlocking and locking, improving passenger comfort and quietness. In addition, the mechanism has a simple structure, fewer parts, and is easy to manufacture, install, and maintain, reducing the failure rate and extending its service life. In summary, the seat lateral movement switching mechanism 200, through its ingenious structural design, enables convenient operation of unlocking and locking the seat, improves the reliability and safety of the seat, and also enhances the comfort and experience of riding.

[0039] In a preferred embodiment, a bushing is provided on the limiting stop 211 to reduce noise during the assembly and disassembly of the limiting hole 223 and the limiting stop 211.

[0040] Preferably, the bushing is made of polyurethane with a thickness between 1 and 3 mm, and more preferably 2 mm.

[0041] It is understandable that when the limiting hole 223 on the unlocking plate 221 engages or disengages from the limiting stop 211, the direct contact between the two metal parts will produce a loud impact sound. The bushing design can effectively absorb this impact force, reduce the direct collision between the metal parts, and thus reduce noise.

[0042] Therefore, polyurethane is used as the shock absorption and noise reduction material. Utilizing its good elasticity and wear resistance, the polyurethane bushing can effectively absorb impact force when the limiting hole 223 and the limiting stop 211 are disassembled or assembled, reducing direct collisions between metal parts. This significantly reduces noise, improves ride quietness and comfort, and maintains stable performance during frequent disassembly and assembly, extending the bushing's service life and reducing maintenance and replacement frequency. Furthermore, a bushing thickness between 1-3mm is ideal. A bushing that is too thin may not provide sufficient cushioning and noise reduction, while a bushing that is too thick may affect the normal engagement of the limiting hole 223 and the limiting stop 211, or even cause malfunction. Therefore, a thickness range of 1-3mm ensures that the bushing effectively reduces noise while guaranteeing the normal operation of the mechanism.

[0043] like Figure 5 As shown, the seat lateral movement state switching mechanism 200 also includes a mounting plate 24. The mounting plate 24 includes a plate body 241 and two protrusions 242. The two protrusions 242 are disposed opposite to each other at both ends of the plate body 241. The protrusions 242 are provided with mounting holes. The mounting plate 24 is connected to the unlocking plate 221 by bolts 244 passing through the mounting holes.

[0044] The elastic element 23 is wound around the bolt 244, the plate body 241 and the seat are fixedly connected, the plate body 241 is provided with a through hole 243, and the abutting end 231 passes through the through hole 243 and abuts against the seat.

[0045] Understandably, the plate body 241 of the mounting plate 24 is used to provide support and a base for installation. The two protrusions 242 are used to fix the elastic element 23 and the unlocking plate 221. In this way, after the bolt 244 passes through the mounting hole on the protrusion 242 of the mounting plate 24 and the elastic element 23, the mounting plate 24 and the unlocking plate 221 are fixed.

[0046] Understandably, the abutting end 231 of the elastic member 23 passes through the through hole 243 on the mounting plate 24 body 241 and abuts against the seat. In this way, when the pressing plate 222 is released, the elastic force of the elastic member 23 can push the unlocking plate 221 back to its original position, so that the limiting hole 223 engages with the limiting stop 211.

[0047] In this embodiment, connection holes are provided at the four corners of the plate body 241, and it is fixed to the seat bracket 11 by four M8 bolts 244.

[0048] Therefore, the mounting plate 24 is fixedly connected to the seat bracket 11 via its plate body 241, providing a stable base for the entire seat lateral movement switching mechanism 200. The connection method of the two protrusions 242 and the bolt 244 reliably fixes the unlocking plate 221 to the mounting plate 24, further enhancing the stability of the mechanism and ensuring reliable operation of the mechanism during seat lateral movement. In addition, by wrapping the elastic element 23 around the bolt 244 and abutting the abutting end 231 through the through hole 243 and abutting against the seat, the bolt 244 and the through hole 243 are cleverly used to fix the elastic element 23 in a suitable position and ensure that it can play an effective role. The elastic force of the elastic element 23 can ensure that the unlocking plate 221 can automatically reset after the pressing plate 222 is released, so that the limiting hole 223 and the limiting stop 211 can reliably engage, ensuring the locking effect of the seat.

[0049] like Figure 3 As shown, the seat lateral movement state switching mechanism 200 also includes a lateral movement guide rod 25, which is disposed on the seat frame 100 and parallel to the seat frame 100. The seat is connected to the guide rod so that it can move along the extension direction of the guide rod when the pressing plate 222 is pressed.

[0050] Understandably, the lateral guide rod 25 provides precise guidance and stable support for the lateral movement of the seat, ensuring that the seat moves along the predetermined trajectory during movement, avoiding deviation and swaying, and improving the smoothness and safety of movement.

[0051] In this embodiment, the diameter of the transverse guide rod 25 is 22mm and the stroke is 60mm, thereby ensuring that the movement trajectories of the transverse guide rod 25, the switching plate 22, the mounting plate 24, and the elastic element 23 are matched.

[0052] Therefore, by connecting the seat to the transverse guide rod 25 and setting the transverse guide rod 25 parallel to the seat frame 100, it can be ensured that the seat can move smoothly along the extension direction of the transverse guide rod 25 after the press plate 222 is pressed to unlock, reducing resistance during the movement and making the operation easier and less strenuous.

[0053] In other embodiments, a locking block can be provided at the end of the transverse guide rod 25, so that the locking block and the unlocking plate 221 are engaged at the limit stop 211 to form mechanical interference, thereby achieving locking.

[0054] In a preferred embodiment, the stiffness coefficient of the elastic element 23 is between 10 and 20 N / mm, preferably k = 15 N / mm.

[0055] In this embodiment, the elastic element 23 is a return spring, and the bolt 244 includes an M6 bolt 244 nut, to assemble the unlocking plate 221, the mounting plate 24 and the elastic element 23 into a modular unit.

[0056] By limiting the stiffness coefficient of the elastic element 23 to between 10-20 N / mm, it is made neither too soft nor too hard, but in a moderate range. If the stiffness coefficient is too small, the elastic element 23 will be too soft, and the pressing plate 222 may dent due to slight pressure during normal use, leading to accidental unlocking and affecting safety. If the stiffness coefficient is too large, the elastic element 23 will be too hard, requiring a lot of force to press and unlock, which will reduce the convenience of operation and increase user fatigue, especially for passengers with less strength.

[0057] Therefore, the above-described structural form can provide good tactile feedback because the moderate stiffness coefficient provides a clear pressing feel. The user can clearly feel the displacement of the pressing plate 222 and the deformation of the elastic element 23, thereby determining whether the unlocking was successful. Furthermore, the moderate stiffness coefficient can effectively avoid false triggering caused by external factors such as vibration and impact, improving the reliability of the seat lateral movement switching mechanism 200.

[0058] In a preferred embodiment, the pressing stroke of the pressing member is between 8-12mm, allowing the unlocking plate 221 to rotate 5°-10°, as can be seen in the following figure. Figure 4 The pressing direction of the middle pressing plate is X, and the flipping direction of the unlocking plate is Y.

[0059] Understandably, the distance the pressing element moves when it is pressed is between 8 and 12 millimeters. This range of travel is to ensure that the unlocking plate 221 can be flipped smoothly and can be flipped between 5° and 10°. This flipping angle is to allow the limiting structure on the unlocking plate 221 to completely disengage from the limiting stop 211, thereby achieving unlocking.

[0060] Because if the downward stroke is too small, the unlocking plate 221 may not be able to rotate at a sufficient angle, causing the limiting hole 223 to not completely disengage from the limiting stop 211, thus preventing unlocking; if the downward stroke is too large, it may complicate the mechanism design, increase costs, and the excessive stroke may also make the operation less sensitive. Furthermore, if the rotation angle is too small, the limiting hole 223 may not be able to completely disengage from the limiting stop 211, leading to unlocking failure; if the rotation angle is too large, it may cause the unlocking plate 221 to interfere with other components, causing damage.

[0061] Therefore, the 8-12mm downward stroke provides sufficient rotation space for the unlocking plate 221, ensuring it can smoothly disengage from the limit stop 211 and achieve a reliable unlocking action. This ensures both the reliability of unlocking and avoids excessive stroke that could complicate the mechanism. A rotation angle range of 5°-10° ensures that the unlocking plate 221 can precisely disengage from the limit stop 211, guaranteeing complete disengagement of the limit hole 223 and the limit stop 211 while avoiding damage to other components due to excessive rotation angle. Simultaneously, a moderate rotation angle ensures the mechanism remains stable in both unlocked and locked states.

[0062] In a preferred embodiment, the limiting stop 211 is made of Q235 steel with a thickness of 2-5mm, preferably 3mm. Q235 steel is a commonly used carbon structural steel with good strength and rigidity, capable of withstanding the forces and impacts generated during seat lateral movement. It also has a certain degree of wear resistance, resisting friction between the limiting stop 211 and the limiting hole 223, thus extending its service life. The thickness range of 2-5mm ensures that the limiting stop 211 will not deform or be damaged under normal use conditions, ensuring that it can reliably perform its limiting function.

[0063] In this embodiment, the limiting stop 211 is welded to the connecting plate 21.

[0064] This application also discloses a bus seat, which includes the seat lateral movement state switching mechanism 200 described above.

[0065] As a preferred embodiment, the seat lateral movement switching mechanism 200 is symmetrically arranged in the armrests on both sides of the seat. This symmetrical design improves operational convenience and allows users to choose which side to operate the lateral movement from, increasing comfort and freedom of movement. Furthermore, the symmetrical arrangement ensures more even force distribution on both sides of the seat, preventing uneven force distribution caused by prolonged operation on one side, thereby improving the stability and durability of the seat structure.

[0066] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A seat lateral movement state switching mechanism, characterized in that, It is mounted on the seat frame (100) and used to switch the state of the seat. The seat lateral movement state switching mechanism (200) includes: A connecting plate (21) is disposed between the parallel and opposite seat frames (100), and a limiting stop (211) is provided on the connecting plate (21). A switching plate (22) is disposed on the connecting plate (21). The switching plate (22) includes a pressing plate (222) and an unlocking plate (221). There is a non-zero included angle between the pressing plate (222) and the unlocking plate (221). The pressing plate (222) protrudes from the seat frame (100). The unlocking plate (221) extends into the space between adjacent seat frames (100). The unlocking plate (221) is provided with a limiting hole (223) corresponding to the limiting stop (211). The limiting hole (223) can engage with the limiting stop (211). The pressing plate (222) can drive the unlocking plate (221) to disengage from the limiting stop (211) when pressed. An elastic element (23) is disposed on the unlocking plate (221). The elastic element (23) has an abutting end (231) that abuts against the seat to provide a force for engaging the unlocking plate (221) with the limiting stop (211) when the pressing plate (222) is released.

2. The seat lateral movement state switching mechanism according to claim 1, characterized in that, A bushing is provided on the limiting stop (211) to reduce the noise when the limiting hole (223) and the limiting stop (211) are disassembled or assembled.

3. The seat lateral movement state switching mechanism according to claim 2, characterized in that, The bushing is made of polyurethane and has a thickness between 1 and 3 mm.

4. The seat lateral movement state switching mechanism according to claim 1, characterized in that, It also includes a mounting plate (24), which includes a plate body (241) and two protrusions (242). The two protrusions (242) are disposed opposite to each other at both ends of the plate body (241). The protrusions (242) are provided with mounting holes. The mounting plate (24) is connected to the unlocking plate (221) by bolts (244) passing through the mounting holes. The elastic element (23) is wound around the bolt (244), the plate body (241) and the seat are fixedly connected, the plate body (241) is provided with a through hole (243), and the abutting end (231) passes through the through hole (243) and abuts against the seat.

5. The seat lateral movement state switching mechanism according to claim 1, characterized in that, It also includes a transverse guide rod (25), which is disposed on the seat frame (100) and parallel to the seat frame (100). The seat and the guide rod are connected so that the seat can move along the extension direction of the guide rod while the press plate (222) is pressed.

6. The seat lateral movement state switching mechanism according to claim 1, characterized in that, The stiffness coefficient of the elastic element (23) is between 10-20 N / mm.

7. The seat lateral movement state switching mechanism according to claim 1, characterized in that, The pressing stroke of the pressing plate (222) is in the range of 8-12mm, which allows the unlocking plate (221) to be rotated by 5°-10°.

8. The seat lateral movement state switching mechanism according to claim 1, characterized in that, The limiting stop (211) is made of Q235 steel with a thickness of 2-5mm.

9. A passenger car seat, characterized in that, It includes the seat lateral movement state switching mechanism (200) as described in any one of claims 1-8.

10. The passenger seat according to claim 9, characterized in that, The seat lateral movement switching mechanism (200) is symmetrically arranged in the armrests on both sides of the seat.

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