Seat structure and vehicle

Abstract

The application relates to the technical field of vehicle seats, and provides a seat structure and a vehicle. The seat structure comprises a mounting seat, a backrest rotatably arranged on the mounting seat, and a torsion rod arranged between the mounting seat and the backrest; the mounting seat is used for being connected with a vehicle body, the torsion rod is arranged along the width direction of the backrest, one end of the torsion rod is connected with the backrest, the other end of the torsion rod is connected with the mounting seat after penetrating through the backrest, and the torsion rod has a pre-tightening force for driving the backrest to overturn forward. According to the application, the torsion rod has the pre-tightening force for driving the backrest to overturn forward, when the inclination angle of the backrest is adjusted, the backrest is always helped to be attached to the back of a passenger under the driving of the torsion rod, so that the passenger can conveniently adjust the backrest to a comfortable inclination angle, the seat posture adjustment convenience is improved, and the vehicle quality is improved. Moreover, the torsion rod is adopted to provide the pre-tightening force for driving the backrest to overturn forward, the pre-tightening force is more stable in release, and the structure of the torsion rod is simple, so that the design and implementation are facilitated.

Description

Technical Field

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

[0002] As the core component that comes into contact with passengers, the comfort and functionality of seats are important factors affecting vehicle quality.

[0003] In related technologies, the design and development of seats usually focus on seat comfort and safety, resulting in deficiencies in seat posture adjustment and poor convenience of seat posture adjustment, which is not conducive to improving vehicle quality. Utility Model Content

[0004] In view of this, this application aims to propose a seat structure to improve the convenience of seat posture adjustment, thereby contributing to the improvement of vehicle quality.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A seat structure includes a mounting base, a backrest rotatably mounted on the mounting base, and a torsion bar disposed between the mounting base and the backrest; The mounting bracket is used to connect to the vehicle body. The torsion bar is arranged along the width direction of the backrest, and one end of the torsion bar is connected to the backrest. The other end of the torsion bar passes through the backrest and is connected to the mounting bracket, so that the torsion bar has a preload force to drive the backrest to flip forward.

[0006] Furthermore, the torsion bar includes a main body segment extending along the width direction of the backrest, and a bent segment and a connecting segment sequentially disposed at one end of the main body segment; the bent segment passes through the backrest, and the connecting segment is inserted into the mounting base.

[0007] Furthermore, the backrest is provided with a limiting member that extends along the axial direction of the main body segment; the limiting member is sleeved outside the main body segment and can limit the radial displacement of the main body segment.

[0008] Furthermore, the limiting member includes a limiting tube extending axially along the main body segment, and a limiting sleeve fixed in the limiting tube; the main body segment is inserted into the limiting sleeve and is coaxially arranged with the limiting tube.

[0009] Furthermore, the limiting sleeve includes two oppositely arranged parts and a connecting rib disposed between one end of the two parts; the other ends of the two parts can be moved away from each other so that the main body segment can enter the limiting sleeve.

[0010] Furthermore, the limiting sleeve includes a body that is interference-inserted into the limiting tube, and a flange provided at one end of the body; the body is provided with toothed ribs spaced apart along its circumference, the toothed ribs abutting against the inner wall of the limiting tube, and the flange is used to limit the insertion displacement of the limiting sleeve.

[0011] Furthermore, the connecting segment extends axially along the main body segment, and the mounting base is provided with a mounting hole; the mounting hole is rectangular, and the connecting segment abuts against the front sidewall of the mounting hole.

[0012] Furthermore, the frame of the backrest has a connecting tube, and one end of the torsion bar connected to the backrest has a bent section; the bent section is inserted into the connecting tube and abuts against the two opposite side walls of the connecting tube.

[0013] Furthermore, the curved section is wavy and has alternating first and second protrusions; the first protrusion abuts against the front sidewall of the connecting pipe, and the second protrusion abuts against the lower rear sidewall of the connecting pipe.

[0014] Compared with related technologies, this application has the following advantages: (1) The seat structure described in this application, by setting a torsion bar between the mounting base and the backrest, and making the torsion bar have a preload force to drive the backrest to flip forward, helps to keep the backrest always against the passenger's back when adjusting the backrest tilt angle, so that the passenger can adjust the backrest to a comfortable tilt angle, which helps to improve the convenience of seat posture adjustment, thereby helping to improve vehicle quality. At the same time, by using the torsion bar to provide a preload force for the backrest to flip forward, the flipping action of the backrest can be made smoother, and the torsion bar structure is simple and easy to design and implement.

[0015] (2) By setting the torsion bar to include a bent section and a connecting section, and having the bent section pass through the backrest, the generation and maintenance of the torsion bar preload can be facilitated. Furthermore, by setting the bent section to pass through the backrest, the axial movement of the torsion bar along the main body section can be effectively avoided, which helps improve the installation stability of the torsion bar. At the same time, by setting the main body section to be distributed along the width direction, the torsion bar can provide a more uniform preload to the backrest along the width direction.

[0016] (3) By setting a limiting piece on the main body section, the displacement of the main body section along its radial direction can be effectively avoided, so that the force of the torsion bar on the backrest can be transmitted in the preset direction, which helps to ensure the stability of the torsion bar and makes the backrest flipping process smooth and reliable.

[0017] (4) By setting limiting components including limiting tubes and limiting sleeves, the force exerted by the torsion bar on the backrest can be transmitted in the preset direction, while the setting of the limiting tube can also protect the main body section, thereby further ensuring the stability of torque transmission.

[0018] (5) By setting the limiting sleeve, which includes separate parts and connecting ribs, when setting the limiting sleeve on the main body section, it is not necessary to pass the limiting sleeve through one end of the torsion bar. Instead, it is only necessary to open the two parts to set the limiting sleeve in the preset position of the main body section. This improves the convenience of installation and maintenance of the limiting sleeve. At the same time, the setting of the connecting ribs makes it less likely for the two parts to misalign after they are fitted together, so as to achieve stable limiting of the torsion bar.

[0019] (6) By setting toothed ribs on the main body, the locating sleeve can be effectively prevented from moving axially along the locating tube, and the relative rotation between the locating sleeve and the locating tube can be effectively prevented, which helps to ensure the stability of the locating sleeve installed in the locating tube. In addition, by setting a flange on the main body, the main body can be effectively inserted into the locating tube, while the locating sleeve can be completely inserted into the locating tube, which facilitates the installation and maintenance of the locating sleeve.

[0020] (7) By setting mounting holes on the mounting base and setting connecting sections to abut against the front side wall of the mounting holes, the connection between the torsion bar and the mounting base is facilitated, which helps to improve assembly efficiency.

[0021] (8) By setting a connecting pipe and a bending section, it is possible to fix one end of the torsion bar on the backrest, and it can effectively simplify the assembly between the torsion bar and the backrest, and also facilitate the later disassembly and maintenance of the torsion bar.

[0022] (9) By setting the curved section with a first protrusion and a second protrusion, the relative rotation between the end of the torsion bar connected to the curved section and the backrest can be effectively prevented. At the same time, the first protrusion and the second protrusion abut against the inner wall of the connecting pipe, which helps to improve the stability of the torsion bar installed in the connecting pipe.

[0023] This application also proposes a vehicle having a seat structure as described above.

[0024] The vehicle described in this application, by providing a torsion bar between the mounting seat and the backrest, and having a preload force that drives the backrest to flip forward, helps to keep the backrest always against the passenger's back when adjusting the backrest tilt angle, so that the passenger can adjust the backrest to a comfortable tilt angle, which helps to improve the convenience of seat posture adjustment, thereby helping to improve the quality of the vehicle. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the seat structure described in the embodiments of this application; Figure 2 for Figure 1 Another perspective view of the structure shown; Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 This is a diagram showing the state of the torsion bar being installed in the mounting hole according to an embodiment of this application; Figure 5 for Figure 4 A magnified view of part B in the middle section; Figure 6 This is a diagram showing the state where the torsion bar described in this application embodiment is not installed in the mounting hole; Figure 7 For this Figure 6 A magnified view of part C in the middle; Figure 8 This is a schematic diagram of the bent section passing through the backrest as described in the embodiments of this application; Figure 9 This is a schematic diagram of the connecting segment passing through the mounting hole according to an embodiment of this application; Figure 10 This is a schematic diagram of the bent section inserted into the connecting pipe according to an embodiment of this application; Figure 11 This is a schematic diagram showing the limiting member being disposed on the main body segment according to an embodiment of this application; Figure 12 This is a part drawing of the limiting member described in the embodiments of this application; Figure 13 This is a schematic diagram of the limiting sleeve being installed on the torsion bar according to an embodiment of this application; Figure 14 This is a part drawing of the limiting sleeve described in the embodiments of this application; Figure 15 This is a schematic diagram showing the limiting sleeve in an open state according to an embodiment of this application; Figure 16 This is a cross-sectional view of the first and second protrusions described in the embodiments of this application disposed within the connecting pipe; Figure 17 This is a side view of the first and second protrusions described in the embodiments of this application disposed within the connecting pipe; Figure 18 This is a schematic diagram of the limiting tube sleeved on the main body section according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Mounting base; 101. Mounting hole; 2. Backrest; 2a. Through hole; 201. Frame; 201a. Slot; 3. Torsion bar; 301. Main body section; 302. Bending section; 303. Connecting section; 304. Bending section; 3041. First protrusion; 3042. Second protrusion; 4. Limiting component; 401. Limiting tube; 402. Limiting sleeve; 402a. Split body; 402b. Connecting rib; 4021. Body; 4022. Flange; 4023. Toothed rib; 4a. Clearance hole; 4b. Clearance groove; 5. Connecting pipe; 6. Backrest lock; 7. Rotary bearing; y, width direction; Detailed Implementation

[0027] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0029] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are 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 on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0031] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0033] An embodiment of the first aspect of this application provides a seat structure installed inside a vehicle for passengers to sit on. Furthermore, through its innovative structural design, when a passenger needs to adjust the tilt angle of the seat back 2, the seat back 2 can be driven to rest against the passenger's back to adjust the seat back 2 to a suitable tilt angle, which helps to improve the convenience of seat posture adjustment and thus helps to improve vehicle quality.

[0034] In related technologies, the design and development of vehicle seats usually focus on the ergonomic design of the seats or seat ventilation and massage, in order to improve seat comfort and safety. However, insufficient attention is paid to seat posture adjustment, making it difficult to adjust the seat back to a suitable tilt angle, resulting in poor seat posture adjustment convenience, which is not conducive to improving vehicle quality.

[0035] In view of this, in order to overcome the shortcomings of related technologies, the seat structure of this embodiment combines... Figures 1 to 4 As shown, the overall design includes a mounting base 1, a backrest 2 rotatably mounted on the mounting base 1, and a torsion bar 3 located between the mounting base 1 and the backrest 2.

[0036] The mounting base 1 is used to connect with the vehicle body. The torsion bar 3 is set along the width direction y of the backrest 2. One end of the torsion bar 3 is connected to the backrest 2, and the other end of the torsion bar 3 passes through the backrest 2 and is connected to the mounting base 1, so that the torsion bar 3 has a preload force to drive the backrest 2 to flip forward.

[0037] Therefore, by setting a torsion bar 3 between the mounting base 1 and the backrest 2, and giving the torsion bar 3 a preload that drives the backrest 2 to flip forward, when the backrest 2 tilt angle needs to be adjusted, the torsion bar 3 helps to keep the backrest 2 always against the passenger's back. This allows the passenger to feel the tilt change of the backrest 2 in real time when adjusting the tilt angle, making it easier to adjust the backrest 2 to a comfortable tilt angle. In particular, when the backrest 2 is adjusted from a large tilt angle to a small tilt angle, that is, when the backrest 2 flips from back to front, the torsion bar 3 ensures that the backrest 2 is always against the passenger's back, which helps to improve the convenience of seat posture adjustment and thus helps to improve vehicle quality.

[0038] Meanwhile, by selecting to set the torsion bar 3 to provide the pre-tightening force for the backrest 2 to flip forward, the flipping action of the backrest 2 can be made smoother, eliminating the need to manually pry the backrest 2 forward, which can further improve the convenience of adjusting the posture of the backrest 2. Moreover, the torsion bar 3 has a simple structure and is easy to design and implement.

[0039] It is worth noting that, in order to effectively ensure the fatigue resistance and stability of the torsion bar 3, in this embodiment, as a specific implementation of the torsion bar 3, the torsion bar 3 can be made of spring steel. Of course, it is understood that the use of spring steel for the torsion bar 3 is only one optional implementation of this application. Other materials can also be selected, as long as the torsion bar 3 can have a preload force to drive the backrest 2 to flip forward.

[0040] It is also worth noting that the torsion bar 3 drives the backrest 2 to flip forward, meaning that along the length of the vehicle body, the torsion bar 3 can drive the backrest 2 to flip towards the side closer to the front of the vehicle. It can be understood that the preload of the torsion bar 3 can drive the backrest 2 to flip forward, meaning it can push the backrest 2 itself to flip forward. However, when a passenger needs to flip the backrest 2 backward to adjust it, the passenger's back pressing against the backrest 2 can overcome the preload and smoothly adjust the tilt angle of the backrest 2.

[0041] Based on the above description, similar to existing technologies, the backrest 2 typically includes a frame 201, a foam body disposed on the frame 201, and a protective cover covering the foam body. It is understood that the mounting seat 1 is located on one side of the backrest 2 and is rotatably connected to the backrest 2; that is, the mounting seat 1 connects to the frame 201 to achieve the connection between that side of the backrest 2 and the vehicle body. Similarly, the other side of the backrest 2 also needs to be connected to the vehicle body. In this embodiment, a pivot seat 7 is provided between the other side of the backrest 2 and the vehicle body. The other side of the backrest 2 is rotatably connected to the vehicle body via the pivot seat 7; that is, the pivot seat 7 connects to the frame 201 to achieve the connection between the backrest 2 and the vehicle body.

[0042] Based on the above overview, combined with Figures 4 to 13As shown, specifically, the torsion bar 3 includes a main body section 301 extending along the width direction y of the backrest 2, and a bent section 302 and a connecting section 303 sequentially disposed at one end of the main body section 301. The bent section 302 passes through the backrest 2, and the connecting section 303 is inserted into the mounting base 1.

[0043] Therefore, by configuring the torsion bar 3 to include a bent section 302 and a connecting section 303, and by having the bent section 302 pass through the backrest 2, the generation and maintenance of the preload of the torsion bar 3 are facilitated. Furthermore, by having the bent section 302 pass through the backrest 2, the axial movement of the torsion bar 3 along the main body section 301 can be effectively prevented, thus improving the installation stability of the torsion bar 3. Simultaneously, by distributing the main body section 301 along the width direction y, the torsion bar 3 can provide a more uniform preload to the backrest 2 along the width direction y.

[0044] It is understandable that, in order to effectively ensure the connection strength between the main body section 301, the bent section 302 and the connecting section 303, in this embodiment, the main body section 301, the bent section 302 and the connecting section 303 are formed by bending a whole section of threaded steel.

[0045] It is worth noting that, in order to facilitate the bending section 302 to pass through the backrest 2 and enable the backrest 2 to rotate relative to the bending section 302, a through hole 2a is provided on the backrest 2 to avoid the bending section 302. When the torsion bar 3 is installed on the backrest 2, one end of the torsion bar 3 can be inserted into the through hole 2a, and the position of the torsion bar 3 can be continuously adjusted until the bending section 302 is located in the through hole 2a.

[0046] It is understood that in this embodiment, the backrest 2 can be rotatably connected to the vehicle body through the installation seat 1 and the pivot seat 7, and the torsion bar 3 can ensure that the backrest 2 is always against the passenger's back when adjusting the tilt angle. Its main purpose is to improve the convenience of seat posture adjustment.

[0047] Based on the above overview, to ensure that the backrest 2 maintains its adjusted posture after angle adjustment, this embodiment includes a backrest lock 6 on the side of the backrest 2 closest to the vehicle body. The backrest lock 6 allows the backrest 2 to be adjusted and rotated within a certain range and locks it to the vehicle body, thus maintaining both the adjusted posture and the adjusted tilt angle. In specific implementations, the style, model, and installation method of the backrest lock 6 can refer to existing backrest lock 6 designs to achieve the adjustment and maintenance of the backrest 2's angle.

[0048] In some of the exemplary implementations, combined with Figure 1 and 10 to Figure 13As shown, a limiting member 4 is provided on the backrest 2, and the limiting member 4 extends along the axial direction of the main body section 301. The limiting member 4 is sleeved on the outside of the main body section 301 and can limit the radial displacement of the main body section 301.

[0049] Therefore, by setting the limiting member 4 on the main body section 301, the situation of displacement of the main body section 301 along its radial direction can be effectively avoided, so that the force of the torsion bar 3 on the backrest 2 can be transmitted in the preset direction, which helps to ensure the stability of the torsion bar 3 and makes the backrest 2 flipping process smooth and reliable.

[0050] In some of the exemplary implementations, combined with Figure 10 and Figure 11 As shown, the limiting member 4 includes a limiting tube 401 extending axially along the main body section 301, and a limiting sleeve 402 fixed in the limiting tube 401. The main body section 301 is inserted into the limiting sleeve 402 and is coaxially arranged with the limiting tube 401.

[0051] Based on the above introduction, by setting the limiting component 4, including the limiting tube 401 and the limiting sleeve 402, the force exerted by the torsion bar 3 on the backrest 2 can be transmitted in the preset direction. At the same time, the setting of the limiting tube 401 can also protect the main body section 301, thereby further ensuring the stability of the torque transmission. Moreover, the structure is simple and easy to design and implement.

[0052] It is worth noting that, as an optional setting method for the limiting tube 401, in this embodiment, it is preferred to set the limiting tube 401 to be fixed on the backrest 2. The specific fixing method can be welding, bonding or binding, etc., as long as the relative position between the limiting tube 401 and the backrest 2 can be maintained.

[0053] In some of the exemplary implementations, combined with Figures 10 to 15 As shown, the limiting sleeve 402 includes two opposing parts 402a and a connecting rib 402b located between one end of the two parts 402a. The other ends of the two parts 402a can be moved away from each other so that the main body segment 301 can enter the limiting sleeve 402.

[0054] Therefore, by setting the limiting sleeve 402 to include a split body 402a and a connecting rib 402b, when the limiting sleeve 402 is set on the main body section 301, it is not necessary to pass the limiting sleeve 402 through one end of the torsion bar 3. Instead, it is only necessary to open the two split bodies 402a to set the limiting sleeve 402 in the preset position of the main body section 301. This improves the convenience of installation and maintenance of the limiting sleeve 402.

[0055] Meanwhile, the connecting rib 402b makes it easy for the two parts 402a to be aligned and fitted together, and makes it less likely for the two parts 402a to misalign after fitting together, so as to achieve stable positioning of the torsion bar 3.

[0056] It is worth noting that, in order to effectively ensure the connection strength between the two parts 402a and the connecting rib 402b, in this embodiment, the two parts 402a and the connecting rib 402b are integrally formed.

[0057] It is understandable that, in order for the ends of the two separate parts 402a without the connecting rib 402b to move closer or further apart, the connecting rib 402b should have a certain degree of toughness, that is, it should not easily break when bent. Specifically, in this embodiment, as an optional molding material for the connecting rib 402b, it can be made of nylon, ABS resin, or other raw materials. With this configuration, when the two separate parts 402a and the connecting rib 402b are integrally molded, the connecting rib 402b can have a certain degree of toughness, allowing the two separate parts 402a to open or close. At the same time, it also allows the two separate parts 402a to have a certain degree of rigidity, ensuring the connection stability between the limiting sleeve 402 and the limiting tube 401, and effectively limiting the radial movement of the main body segment 301.

[0058] Of course, it is also understandable that the above are only exemplary materials that can be selected when molding the limiting sleeve 402. The limiting sleeve 402 can also be made of other materials so that the connecting rib 402b is not easy to break when it bends, and the limiting sleeve 402 as a whole has a certain rigidity.

[0059] In some of the exemplary implementations, combined with Figure 12 and Figure 14 As shown, the limiting sleeve 402 includes a body 4021 that is interference-fitted into the limiting tube 401, and a flange 4022 provided at one end of the body 4021. The body 4021 is provided with toothed ribs 4023 spaced apart along its circumference. The toothed ribs 4023 abut against the inner wall of the limiting tube 401, and the flange 4022 is used to limit the insertion displacement of the limiting sleeve 402.

[0060] Therefore, by providing toothed ribs 4023 on the body 4021, the connection strength between the body 4021 and the limiting tube 401 is increased, thereby effectively preventing the limiting sleeve 402 from moving axially along the limiting tube 401 and effectively avoiding the situation where the limiting sleeve 402 and the limiting tube 401 rotate relative to each other, which helps to ensure the stability of the limiting sleeve 402 installed in the limiting tube 401.

[0061] Furthermore, by providing a flange 4022 on the main body 4021, the main body 4021 can be effectively inserted into the limiting tube 401, while avoiding the situation where the limiting sleeve 402 is completely inserted into the limiting tube 401, thereby facilitating the installation and maintenance of the limiting sleeve 402.

[0062] It is worth noting that when the limiting sleeve 402 includes a body 4021 that can be inserted into the limiting tube 401, in order to facilitate the insertion of the body 4021 into the limiting tube 401, it is preferable to set the limiting tube 401 as a round tube. Compared with a rectangular tube, it is not necessary to make the corners of the body 4021 correspond to the corners of the limiting tube 401, thus facilitating the insertion between the body 4021 and the limiting tube 401.

[0063] Based on the above overall description, in a preferred embodiment of the limiting sleeve 402, the two separate parts 402a and the connecting rib 402b are configured as a body 4021 with a flange 4022, and toothed ribs 4023 are arranged at intervals around the body 4021. This configuration facilitates the installation of the limiting sleeve 402 on the torsion bar 3, effectively ensures the connection stability between the limiting sleeve 402 and the limiting tube 401, and facilitates the assembly and disassembly of the limiting sleeve 402 and the limiting tube 401.

[0064] Understandably, in combination Figure 14 and Figure 15 As shown, after the two separate parts 402a are merged to form the main body 4021, a clearance hole 4a for avoiding the torsion bar 3 is formed on the main body 4021. Furthermore, when the two separate parts 402a are opened, the clearance hole 4a is divided into a clearance groove 4b.

[0065] In some of the exemplary implementations, combined with Figures 2 to 5 As shown, the connecting section 303 extends along the axial direction of the main body section 301, and the mounting base 1 is provided with a mounting hole 101; the mounting hole 101 is rectangular, and the connecting section 303 abuts against the front side wall of the mounting hole 101.

[0066] Therefore, by providing a mounting hole 101 on the mounting base 1 and providing a connecting section 303 abutting against the front side wall of the mounting hole 101, the connection between the torsion bar 3 and the mounting base 1 is facilitated, without the need for welding or snap-fit ​​connection to achieve the connection between the connecting section 303 and the mounting base 1, thereby helping to improve assembly efficiency.

[0067] It is understandable that the mounting hole 101 is rectangular, which is only one optional implementation of the mounting hole 101. In specific implementation, the mounting hole 101 can also be other shapes, so that when the end of the torsion bar 3 without the connecting rod is fixed on the backrest 2, the connecting section 303 can be inserted into the mounting hole 101, and thus can provide preload to the torsion bar 3.

[0068] In some of the exemplary implementations, combined with Figure 1 , Figure 4 , Figure 6 , Figure 13 as well as Figure 16As shown, the frame 201 of the backrest 2 has a connecting pipe 5, and the end of the torsion bar 3 connected to the backrest 2 is provided with a bent section 304; the bent section 304 is inserted into the connecting pipe 5 and abuts against the two opposite side walls of the connecting pipe 5.

[0069] Therefore, by setting the connecting pipe 5 and the bending section 304, it is possible to fix one end of the torsion bar 3 on the backrest 2, effectively simplify the assembly between the torsion bar 3 and the backrest 2, and facilitate the later disassembly and maintenance of the torsion bar 3.

[0070] It is understood that the inclusion of the bending section 304 in the torsion bar 3 and the connecting pipe 5 in the backrest 2 is only a preferred embodiment. In actual implementation, other methods can also be used, as long as the end of the main body section 301 away from the bending section 302 is connected to the backrest 2. When the torsion bar 3 is made of spring steel, by providing the bending section 304 and the connecting pipe 5, the situation of welding the torsion bar 3 to the frame 201 can be effectively avoided, thereby effectively preventing the torsion bar 3 made of spring steel from cracking due to welding.

[0071] It is worth noting that, as an optional implementation of the connection between the connecting pipe 5 and the frame 201, in this embodiment, the connecting pipe 5 is connected to the frame 201 through a reinforcing pipe. Specifically, the reinforcing pipe is n-shaped, and its free end is located on the side closer to the torsion bar 3. Simultaneously, a slot 201a is provided at the end of the reinforcing pipe near the connecting pipe 5, and the connecting pipe 5 is snapped into and fixed within the slot 201a, thus achieving the connection with the reinforcing pipe. This arrangement helps to ensure that the preload of the torsion bar 3 is evenly distributed on the backrest 2 through the reinforcing pipe when adjusting the backrest 2's tilt angle.

[0072] It is also worth noting that, in combination Figure 18 As shown, in this embodiment, when the torsion bar 3 includes a bent section 304 and the limiting member 4 includes a limiting tube 401, preferably, the limiting tube 401 is sleeved outside the bent section 304 and can move axially along the main body section 301 to be sleeved outside the main body section 301. This arrangement facilitates the sleeved placement of the limiting tube 401 on the torsion bar 3 with the bent section 304, making the torsion bar 3 easy to assemble.

[0073] In some of the exemplary implementations, combined with Figure 16 and Figure 17 As shown, the curved section 304 is wavy and has alternating first protrusions 3041 and second protrusions 3042; the first protrusion 3041 abuts against the front sidewall of the connecting pipe 5, and the second protrusion 3042 abuts against the rear sidewall of the connecting pipe 5.

[0074] Therefore, by setting the curved section 304 to have a first protrusion 3041 and a second protrusion 3042, it is possible to effectively prevent the end of the torsion bar 3 connected to the curved section 304 from rotating relative to the backrest 2. At the same time, the first protrusion 3041 and the second protrusion 3042 abut against the inner wall of the connecting pipe 5, which helps to improve the stability of the torsion bar 3 installed in the connecting pipe 5.

[0075] Understandably, the curved section 304 is wavy, with a first protrusion 3041 abutting against the front wall of the connecting pipe 5 and a second protrusion 3042 abutting against the rear wall of the connecting pipe 5. The main purpose is to effectively prevent the curved section 304 from swaying or rotating within the connecting pipe 5. Of course, there can be a gap between the curved section 304 and the inner wall of the connecting pipe 5 to facilitate insertion of the curved section 304 into the connecting pipe 5. In a specific implementation, as another optional embodiment, the curved section 304 can be of any curved shape, such as a V-shape or an N-shape, to effectively prevent rotation within the connecting pipe 5, allowing the torsion bar 3 to maintain preload and drive the backrest 2 to flip.

[0076] Based on the above overview, as an optional embodiment of assembling the torsion bar 3 onto the backrest 2, firstly, the limiting tube 401 is fitted onto the torsion bar 3 from the end with the bent section 304. Secondly, the connecting section 303 is passed through the through hole 2a, and the torsion bar 3 is adjusted until the bent section 302 is located within the through hole 2a. Then, the bent section 304 is inserted into the connecting tube 5. Simultaneously, the limiting sleeve 402 is fitted onto the torsion bar 3, and the limiting sleeve 402 is connected to the limiting tube 401. (Refer to...) Figure 6 and Figure 7 As shown, at this point, the torsion bar 3 is in a free state. Finally, torsion bar 3 is twisted to insert connecting section 303 into mounting hole 101, completing the installation of torsion bar 3. (Refer to...) Figure 4 and Figure 5 As shown, at this point, the torsion bar 3 changes from a free state to an assembled state, thereby giving the torsion bar 3 a preload. Of course, it is understood that the above is only a preferred embodiment for assembling the torsion bar 3; in actual assembly, other methods can be used to install the torsion bar 3 to achieve the final assembly of the torsion bar 3.

[0077] It is worth noting that, regarding the seat structure of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 18As shown, it may include, for example, a mounting base 1, a backrest 2 rotatably mounted on the mounting base 1, and a torsion bar 3 disposed between the mounting base 1 and the backrest 2; the mounting base 1 is used to connect to the vehicle body, the torsion bar 3 is disposed along the width direction y of the backrest 2, and one end of the torsion bar 3 is connected to the backrest 2, and the other end of the torsion bar 3 passes through the backrest 2 and is connected to the mounting base 1, so that the torsion bar 3 has a preload force to drive the backrest 2 to flip forward.

[0078] The torsion bar 3 includes a main body segment 301 extending along the width direction y of the backrest 2, and a bent segment 302 and a connecting segment 303 sequentially disposed at one end of the main body segment 301. A limiting member 4 is provided on the backrest 2, extending axially along the main body segment 301. The limiting member 4 is sleeved on the outside of the main body segment 301 and can limit the radial displacement of the main body segment 301.

[0079] The limiting member 4 includes a limiting tube 401 extending axially along the main body section 301, and a limiting sleeve 402 fixed in the limiting tube 401; the main body section 301 is inserted into the limiting sleeve 402 and is coaxially arranged with the limiting tube 401.

[0080] Furthermore, the limiting sleeve 402 includes two opposing parts 402a and a connecting rib 402b located between one end of the two parts 402a; the other ends of the two parts 402a can be moved away from each other so that the main body segment 301 can enter the limiting sleeve 402. The two parts 402a and the connecting rib 402b are configured as a body 4021 with a flange 4022, and toothed ribs 4023 are provided at intervals in the circumference of the body 4021.

[0081] In the preferred embodiment of the above seat structure, the specific settings and arrangements of the mounting base 1, torsion bar 3, limiting member 4, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the mounting base 1, torsion bar 3, and limiting member 4, etc., can also be referred to the descriptions in the above exemplary embodiments.

[0082] The seat structure of this embodiment adopts the design described above. A torsion bar 3 is installed between the mounting base 1 and the backrest 2, and the torsion bar 3 has a preload force to drive the backrest 2 to flip forward. When it is necessary to adjust the tilt angle of the backrest 2, the torsion bar 3 helps to keep the backrest 2 always against the passenger's back, so that the passenger can feel the tilt change of the backrest 2 in real time when adjusting the tilt angle, thus making it easy to adjust the backrest 2 to a comfortable tilt angle. In particular, when the backrest 2 is adjusted from a large tilt angle to a small tilt angle, that is, when the backrest 2 flips from back to front, the torsion bar 3 ensures that the backrest 2 is always against the passenger's back, which helps to improve the convenience of seat posture adjustment, thereby helping to improve the quality of the vehicle.

[0083] Meanwhile, the torsion bar 3 is selected to provide a preload force for the backrest 2 to flip forward, which makes the release of the preload force more stable. In addition, the torsion bar 3 has a simple structure and is easy to design and implement.

[0084] An embodiment of the second aspect of this application provides a vehicle having a seating structure as described in the first aspect.

[0085] The vehicle in this embodiment, by providing the seat structure as described in the first aspect, can help improve the convenience of seat posture adjustment, thereby helping to improve vehicle quality.

[0086] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A seat structure, characterized in that: It includes a mounting base (1), a backrest (2) rotatably mounted on the mounting base (1), and a torsion bar (3) disposed between the mounting base (1) and the backrest (2); The mounting base (1) is used to connect to the vehicle body. The torsion bar (3) is arranged along the width direction (y) of the backrest (2). One end of the torsion bar (3) is connected to the backrest (2), and the other end of the torsion bar (3) passes through the backrest (2) and is connected to the mounting base (1), so that the torsion bar (3) has a preload force to drive the backrest (2) to flip forward.

2. The seat structure according to claim 1, characterized in that: The torsion bar (3) includes a main body section (301) extending along the width direction (y) of the backrest (2), and a bent section (302) and a connecting section (303) sequentially disposed at one end of the main body section (301); The bent section (302) passes through the backrest (2), and the connecting section (303) is inserted into the mounting base (1).

3. The seat structure according to claim 2, characterized in that: The backrest (2) is provided with a limiting member (4), which extends along the axial direction of the main body section (301); The limiting member (4) is sleeved outside the main body segment (301) and can limit the radial displacement of the main body segment (301).

4. The seat structure according to claim 3, characterized in that: The limiting member (4) includes a limiting tube (401) extending axially along the main body section (301) and a limiting sleeve (402) fixed in the limiting tube (401); The main body segment (301) is inserted into the limiting sleeve (402) and is coaxially arranged with the limiting tube (401).

5. The seat structure according to claim 4, characterized in that: The limiting sleeve (402) includes two oppositely arranged parts (402a) and a connecting rib (402b) disposed between one end of the two parts (402a); The other ends of the two said split parts (402a) can be moved away from each other so that the main body segment (301) can enter the limiting sleeve (402).

6. The seat structure according to claim 4, characterized in that: The limiting sleeve (402) includes a body (4021) that is interference-inserted into the limiting tube (401), and a flange (4022) provided at one end of the body (4021); The body (4021) is provided with toothed ribs (4023) spaced apart along its circumference. The toothed ribs (4023) abut against the inner wall of the limiting tube (401). The flange (4022) is used to limit the insertion displacement of the limiting sleeve (402).

7. The seat structure according to claim 2, characterized in that: The connecting segment (303) extends along the axial direction of the main body segment (301), and the mounting base (1) is provided with mounting holes (101); The mounting hole (101) is rectangular, and the connecting section (303) abuts against the front sidewall of the mounting hole (101).

8. The seat structure according to any one of claims 1 to 7, characterized in that: The frame (201) of the backrest (2) has a connecting tube (5), and the end of the torsion bar (3) connected to the backrest (2) has a bent section (304). The curved section (304) is inserted into the connecting pipe (5) and abuts against the two opposite side walls of the connecting pipe (5).

9. The seat structure according to claim 8, characterized in that: The curved section (304) is wavy and has alternating first protrusions (3041) and second protrusions (3042); The first protrusion (3041) abuts against the front sidewall of the connecting pipe (5), and the second protrusion (3042) abuts against the rear sidewall of the connecting pipe (5).

10. A vehicle, characterized in that: The vehicle is equipped with a seat structure as described in any one of claims 1 to 9.

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