Limiting unlocking device and vehicle

Abstract

The utility model provides a limit unlocking device and a vehicle, the limit unlocking device is used for unlocking a seat guide rail by a floor lock when a seat cushion in a vehicle seat slides to a designated position on the seat guide rail, and the limit unlocking device comprises a stay wire unlocking part and a rotating part which are rotatably arranged on the seat guide rail, the moving part is arranged on the seat cushion; the stay wire unlocking part is provided with a bayonet for clamping an unlocking stay wire in a floor lock, and a first arc-shaped groove coaxial with the rotating part is formed in the stay wire unlocking part; a limiting body is arranged on the rotating part, and when the limiting body is arranged in the first arc-shaped groove in a penetrating manner, the rotation of the stay wire unlocking part can be locked; when the seat cushion slides to a designated position, the rotating part is driven by the moving part to rotate to a preset angle, the limiting body slides out of the first arc-shaped groove, and the pull wire unlocking part can be driven by external force to rotate so as to pull the unlocking pull wire to unlock the floor lock. According to the limiting unlocking device, the use quality of the seat can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seat technology, and in particular to a limit unlocking device. This utility model also relates to a vehicle equipped with the aforementioned limit unlocking device. Background Technology

[0002] As people's living standards continue to improve, their expectations for the performance and functions of vehicles are also constantly rising, with a particular emphasis on storage space. Some vehicles are designed with specially structured seats to maximize storage space. These seats feature seat rails that can rotate relative to the vehicle floor, with the seat cushion sliding along these rails. This allows for both fore-and-aft adjustment and the ability to flip the seat forward, expanding the storage space. When the seat is not in use, the seat rails are locked to the vehicle floor via a floor lock. The floor lock is equipped with a pull cable for unlocking, allowing the user to manually pull the cable to release the seat rails.

[0003] However, in some usage scenarios, if the seat is close to an object in front of it when it flips over, it may collide with the object after flipping over, causing damage to the seat or the object in front of it, thus affecting the quality of the seat's use. Utility Model Content

[0004] In view of this, the present invention aims to propose a limit unlocking device to improve the quality of use of the seat.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A limiting unlocking device is used to release the floor lock from the seat rail when the seat cushion in a vehicle seat slides to a designated position on the seat rail. The limiting unlocking device includes a pull-wire unlocking part and a rotating part rotatably disposed on the seat rail, and a moving part disposed on the seat cushion.

[0007] The pull-cord unlocking part has a slot for engaging the unlocking pull cord in the floor lock, and a first arc-shaped groove arranged coaxially with the rotating part is provided on the pull-cord unlocking part;

[0008] The rotating part is provided with a limiting body, and when the limiting body passes through the first arc-shaped groove, it can lock the rotation of the pull-wire unlocking part.

[0009] When the seat cushion slides to the designated position, the rotating part is driven by the moving part to rotate to a predetermined angle, the limiting body slides out of the first arc-shaped groove, and the pull-wire unlocking part can be driven to rotate by an external force to pull the unlocking pull wire to release the floor lock.

[0010] Furthermore, the limiting unlocking device also includes a first elastic reset part connected to the rotating part;

[0011] When the rotating part is driven to rotate to the predetermined angle by the moving part, the first elastic reset part stores energy, and when the first elastic reset part releases energy, it can drive the rotating part to reset, and the limiting body enters the first arc-shaped groove.

[0012] Furthermore, the first elastic reset part includes a first tension spring;

[0013] One end of the first tension spring is connected to the rotating shaft of the cable unlocking part, and the other end of the first tension spring is connected to the pin located on the rotating part.

[0014] Furthermore, the pull-wire unlocking part is provided with a second arc-shaped groove arranged coaxially with the pull-wire unlocking part;

[0015] The second arc-shaped groove is connected to one end of the first arc-shaped groove, and when the seat cushion slides to the designated position, the limiting body that slides out of the first arc-shaped groove enters the second arc-shaped groove.

[0016] Furthermore, when the limiting body enters the second arc-shaped groove, it can limit the rotation angle of the pull-wire unlocking part.

[0017] Furthermore, the rotating part includes a sector gear rotatably mounted on the seat guide rail, and the moving part includes a rack mounted on the seat cushion, the rack being meshed with the sector gear.

[0018] Furthermore, a second elastic reset part is provided between the pull-wire unlocking part and the seat guide rail;

[0019] When the pull-wire unlocking part is driven to rotate by the external force, the second elastic reset part stores energy and releases energy, which can drive the pull-wire unlocking part to reset.

[0020] Furthermore, the second elastic reset part includes a second tension spring;

[0021] One end of the second tension spring is connected to the cable unlocking part, and the other end of the second tension spring is connected to the connecting bracket fixed on the seat guide rail.

[0022] Furthermore, one end of the pull-cord unlocking part is provided with a hook, and the pull-cord unlocking part receives the drive of the external force through the hook.

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] The limiting unlocking device of this utility model is provided with a pull-wire unlocking part, a rotating part, and a moving part that cooperate with each other. By setting a limiting body on the rotating part and setting a first arc-shaped groove that can restrict the limiting body, the pull-wire unlocking part can only be driven to rotate to unlock the floor lock when the seat cushion slides to a designated position. When the seat cushion is not in the designated position, the floor lock cannot be unlocked and the seat cannot be flipped. When the seat cushion is in the designated position, the distance between the seat and the object in front is sufficient. After unlocking the floor lock, the seat can be flipped without colliding or interfering with the object in front, thereby improving the quality of use of the seat.

[0025] Secondly, a first elastic reset part connected to the rotating part is provided, which can reset the rotating part when the moving part disengages from the rotating part, and return the limiting body to the initial position of the first arc-shaped groove, ensuring that the rotating part rotates until the limiting body slides out of the first arc-shaped groove each time the moving part drives the rotating part to rotate. By providing a first tension spring connected between the rotating shaft of the pull-wire unlocking part and the pin of the rotating part, the rotating part can be reset under the elastic force of the first tension spring when it disengages from the moving part.

[0026] Furthermore, the second arc-shaped groove restricts the movement of the limiting body, thereby limiting the maximum rotation angle of the cable unlocking part. This minimizes the movement of the cable unlocking part without affecting its unlocking function, saving space. The use of a sector gear and rack provides high precision in the rack-driven gear rotation, and its simple, reliable structure and long service life ensure its effectiveness. A second elastic reset part is provided between the seat guide rail and the cable unlocking part, allowing it to automatically reset after being released by external force, facilitating the entry of the limiting body into the first arc-shaped groove.

[0027] Furthermore, by installing a second tension spring between the cable unlocking part and the connecting bracket, the cable unlocking part can be reset using elastic force, offering advantages such as stable elastic force generation and a compact structure. A hook is provided at one end of the cable unlocking part, facilitating the connection of attachments such as straps or chains, allowing the user to pull the attachment to rotate the cable unlocking part.

[0028] Another objective of this invention is to provide a vehicle in which the seat is equipped with the limiting and unlocking device described above.

[0029] The vehicle described in this utility model has the same beneficial effects as the limit unlocking device described above compared to the prior art, and will not be repeated here. Attached Figure Description

[0030] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0031] Figure 1 This is a schematic diagram of the limiting unlocking device according to Embodiment 1 of this utility model, in which the pull-wire unlocking part is in an unlockable state;

[0032] Figure 2 This is a schematic diagram of the limiting unlocking device according to Embodiment 1 of this utility model, in which the pull-wire unlocking part is in an unlockable state.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Unlocking section;

[0035] 101. First arc-shaped groove; 102. Second arc-shaped groove; 103. Bayonet; 104. Hook;

[0036] 2. Rotating part;

[0037] 201. Pin;

[0038] 3. Mobility Unit;

[0039] 4. First tension spring;

[0040] 5. Second tension spring;

[0041] 6. Limiting body;

[0042] 7. Connecting bracket;

[0043] 8. Install the bracket. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, 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.

[0046] Taking the vehicle in which the seat described in this utility model is located as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vehicle's vertical direction (also known as the height direction, or the Z-direction of the entire vehicle), horizontal direction (also known as the width direction, or the Y-direction of the entire vehicle), and front-back direction (also known as the length direction, or the X-direction of the entire vehicle). "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the vehicle outline, with the side of the vehicle outline closer to the middle of the vehicle being "inner," and the opposite being "outer."

[0047] Furthermore, in the description of this utility model, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0048] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] Example 1

[0050] This embodiment relates to a limit unlocking device to improve the quality of seat use.

[0051] In terms of overall structure, such as Figure 1 and Figure 2 As shown, the limiting unlocking device of this embodiment is used to release the floor lock from locking the seat rail when the seat cushion in the vehicle seat slides to a designated position on the seat rail. The limiting unlocking device includes a pull-wire unlocking part 1 and a rotating part 2 rotatably provided on the seat rail, and a moving part 3 provided on the seat cushion.

[0052] The pull-cord unlocking part 1 has a latch 103 for mounting the unlocking pull cord of the floor lock, and a first arc-shaped groove 101 arranged coaxially with the rotating part 2 is provided on the pull-cord unlocking part 1. The rotating part 2 is provided with a limiting body 6, and when the limiting body 6 passes through the first arc-shaped groove 101, it can lock the rotation of the pull-cord unlocking part 1.

[0053] When the seat cushion slides to the designated position, the rotating part 2 is driven by the moving part 3 to rotate to a predetermined angle, the limiting body 6 slides out of the first arc-shaped groove 101, and the pull-wire unlocking part 1 can be driven to rotate by external force to pull the unlocking pull wire to release the floor lock.

[0054] As described above, the limiting unlocking device of this embodiment includes a pull-cord unlocking part 1, a rotating part 2, and a moving part 3 that cooperate with each other. By providing a limiting body 6 on the rotating part 2 and a first arc-shaped groove 101 that can restrict the limiting body 6, the pull-cord unlocking part 1 can only be driven to rotate and unlock the floor lock when the seat cushion slides to a designated position. When the seat cushion is not in the designated position, the floor lock cannot be unlocked, and the seat cannot be flipped. When the seat cushion is in the designated position, the distance between the seat and the object in front is sufficient. After unlocking the floor lock, the seat can be flipped without colliding or interfering with the object in front, thereby improving the quality of use of the seat.

[0055] Based on the above overall introduction, please refer to Figure 1 and Figure 2 As shown, specifically, the designated position of the seat cushion on the seat rail is the position of the seat cushion when there is sufficient distance between the seat and the object in front. Preferably, the designated position can be the rearmost end of the sliding trajectory of the seat cushion on the seat rail. In practice, the user can push the seat cushion back to its limit position to unlock the floor lock, which is relatively simple to operate. In addition, the limiting body 6 in this embodiment is a cylinder, and its circumferential outer wall contacts and slides relative to the groove wall of the first arc-shaped groove 101, resulting in less sliding friction and thus less resistance to the rotation of the rotating part 2.

[0056] Furthermore, to ensure effective cooperation between the moving part 3 and the rotating part 2, the limiting unlocking device also includes a first elastic reset part connected to the rotating part 2. When the rotating part 2 is driven to rotate to a predetermined angle by the moving part 3, the first elastic reset part stores energy, and when the first elastic reset part releases energy, it can drive the rotating part 2 to reset, and the limiting body 6 enters the first arc-shaped groove 101. By providing the first elastic reset part connected to the rotating part 2, the moving part 3 can reset the rotating part 2 when it disengages from the rotating part 2, and the limiting body 6 returns to the initial position of the first arc-shaped groove 101, so as to ensure that the moving part 3 can cause the rotating part 2 to rotate until the limiting body 6 slides out of the first arc-shaped groove 101 each time it drives the rotating part 2 to rotate.

[0057] Understandably, if the first elastic reset part is not provided, when the seat cushion moves forward until the moving part 3 disengages from the rotating part 2, the rotating part 2 may rotate due to vibrations generated by the vehicle's movement. This would cause the mating position between the moving part 3 and the rotating part 2 to change when the seat cushion moves backward until the moving part 3 re-engages the rotating part 2. Consequently, the moving part 3 cannot drive the rotating part 2 to rotate by a sufficient angle, the limiting body 6 cannot disengage from the first arc-shaped groove 101, the cable unlocking part 1 cannot be pulled, and the limiting unlocking device loses its unlocking function.

[0058] Preferably, the first elastic reset part includes a first tension spring 4. One end of the first tension spring 4 is connected to the rotating shaft of the cable unlocking part 1, and the other end of the first tension spring 4 is connected to the pin 201 located on the rotating part 2. By setting the first tension spring 4 between the rotating shaft of the cable unlocking part 1 and the pin 201 of the rotating part 2, the rotating part 2 can be reset under the elastic force of the first tension spring 4 when it is disengaged from the moving part 3. The tension spring has the advantages of stable elastic force generation and compact structure, and has hook-like structures at both ends, which can be directly hung on the rotating shaft of the cable unlocking part 1 and the pin 201 of the rotating part 2 respectively, making installation and disassembly convenient. Of course, the first elastic reset part can also be an elastic object such as an elastic rope, as long as it can store energy when stretched by the rotating part 2 and pull the rotating part 2 to reset when released. In addition, in order to make the hook-like structure of the second tension spring 5 more reliable, slots can be made on the rotating shaft of the cable unlocking part 1 and the pin 201 of the rotating part 2 to embed the hook-like structure of the second tension spring 5.

[0059] Secondly, regarding the specific structure of the pull-cord unlocking part 1, in this embodiment, the pull-cord unlocking part 1 is provided with a second arc-shaped groove 102 arranged coaxially with the pull-cord unlocking part 1. The second arc-shaped groove 102 is connected to one end of the first arc-shaped groove 101, and when the seat cushion slides to the designated position, the limiting body 6 that slides out of the first arc-shaped groove 101 enters the second arc-shaped groove 102. When the limiting body 6 enters the second arc-shaped groove 102, it can limit the rotation angle of the pull-cord unlocking part 1. By setting the second arc-shaped groove 102, the movement of the limiting body 6 can be limited, thereby limiting the maximum rotatable angle of the pull-cord unlocking part 1. Without affecting the unlocking function of the pull-cord unlocking part 1, the movement of the pull-cord unlocking part 1 is smaller, saving space. Specifically, the second arc-shaped groove 102 is connected to one end of the first arc-shaped groove 101 near the rotation axis of the pull-cord unlocking part 1, which makes the size of the second arc-shaped groove 102 smaller, thereby reducing the external dimensions of the corresponding position of the pull-cord unlocking part 1.

[0060] To facilitate user operation of the pull-cord unlocking part 1, one end of the pull-cord unlocking part 1 is provided with a hook 104, and the pull-cord unlocking part 1 receives external force through the hook 104. Providing a hook 104 at one end of the pull-cord unlocking part 1 facilitates the connection of a connecting object such as a strap or chain, allowing the user to pull the connecting object to drive the pull-cord unlocking part 1 to rotate. Preferably, in this embodiment, the pull-cord unlocking part 1 is a long strip, with one end rotatably connected to the seat slide rail, and the other end integrally formed with a hook 104. A strap for the user to pull is hung on the hook 104. The hook 104 has a C-shaped structure with two interlaced ends, preventing the strap from easily falling off during use.

[0061] Furthermore, regarding the specific cooperation between the rotating part 2 and the moving part 3, the rotating part 2 includes a sector gear rotatably mounted on the seat guide rail, and the moving part 3 includes a rack mounted on the seat cushion, with the rack meshing with the sector gear. The combination of the sector gear and rack provides high precision in the rotation of the gear driven by the rack, and the structure is simple, reliable, and has a long service life. The specific number of teeth and size of the sector gear can be set according to the rotatable angle of the rotating part 2, ensuring that each tooth of the sector gear participates in the transmission. Compared to using a complete gear, this reduces the size, saving manufacturing costs and space. In this embodiment, the seat guide rail has a mounting bracket 8, and the sector gear is rotatably connected to the mounting bracket 8.

[0062] Furthermore, to improve the ease of use of the limit unlocking device, a second elastic reset part is provided between the cable unlocking part 1 and the seat guide rail. When the cable unlocking part 1 is driven to rotate by an external force, the second elastic reset part stores energy and releases energy, which can drive the cable unlocking part 1 to reset. The provision of the second elastic reset part between the seat guide rail and the cable unlocking part 1 enables the cable unlocking part 1 to automatically reset after the external force is released, so that the limit body 6 can enter the first arc-shaped groove 101.

[0063] Preferably, the second elastic reset part includes a second tension spring 5. One end of the second tension spring 5 is connected to the cable unlocking part 1, and the other end of the second tension spring 5 is connected to the connecting bracket 7 fixed on the seat guide rail. By connecting the second tension spring 5 between the cable unlocking part 1 and the connecting bracket 7, the cable unlocking part 1 can be reset by elastic force. The tension spring has the advantages of stable elastic force generation and compact structure, and has hook-like structures at both ends for easy installation and disassembly. Specifically, the cable unlocking part 1 has a through hole for hooking the second tension spring 5. The connecting bracket 7 has two through holes, and the two through holes form a connecting structure for hooking the tension spring.

[0064] It should be noted that the second elastic reset part can also be an elastic object such as an elastic rope, as long as it can be stretched and stored by the pull-wire unlocking part 1, and the energy released will pull the pull-wire unlocking part 1 to reset. The second elastic reset part can also be a compression spring, which is compressed and stores energy when the pull-wire unlocking part 1 rotates to unlock, and extends to push the pull-wire unlocking part 1 to rotate and reset when the energy is released.

[0065] For example, in this embodiment, the pull-wire unlocking part 1 is partially bent in the width direction and has a bayonet 103. The end of the unlocking pull wire is fitted into the bayonet 103. The connecting bracket 7 has a clearance notch for the unlocking pull wire to pass through, so as to prevent the connecting bracket 7 from interfering with the unlocking pull wire.

[0066] The limiting unlocking device in this embodiment includes a pull-cord unlocking part 1, a rotating part 2, and a moving part 3 that cooperate with each other. By providing a limiting body 6 on the rotating part 2 and a first arc-shaped groove 101 that can restrict the limiting body 6, the pull-cord unlocking part 1 can only be driven to rotate and unlock the floor lock when the seat cushion slides to a designated position. When the seat cushion is not in the designated position, the seat rail cannot be unlocked, and the seat cannot be flipped. When the seat cushion is in the designated position, there is sufficient distance between the seat and the object in front, and after unlocking the seat rail, the seat can be flipped without colliding or interfering with the object in front, thereby improving the quality of use of the seat.

[0067] Example 2

[0068] This embodiment relates to a vehicle in which the seat is equipped with the limiting unlocking device of Embodiment 1.

[0069] In this embodiment, the rear seats of the vehicle are foldable and equipped with the limiting and unlocking device of Embodiment 1. This allows the rear seats to be folded only when there is sufficient space in front, and the folded seats will not collide or interfere with objects in front, thus improving the quality of vehicle use.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A limiting and unlocking device, used to release the floor lock from the seat rail when the seat cushion in a vehicle seat slides to a designated position on the seat rail, characterized in that: It includes a pull-wire unlocking part (1) and a rotating part (2) rotatably mounted on the seat rail, and a moving part (3) mounted on the seat cushion; The pull-cord unlocking part (1) has a slot (103) for engaging the unlocking pull cord in the floor lock, and a first arc-shaped groove (101) is provided on the pull-cord unlocking part (1) and arranged coaxially with the rotating part (2); The rotating part (2) is provided with a limiting body (6), and when the limiting body (6) passes through the first arc groove (101), it can lock the rotation of the pull wire unlocking part (1). When the seat cushion slides to the designated position, the rotating part (2) is driven by the moving part (3) to rotate to a predetermined angle, the limiting body (6) slides out of the first arc groove (101), and the pull-wire unlocking part (1) can be driven to rotate by an external force to pull the unlocking pull wire to release the floor lock.

2. The limiting and unlocking device according to claim 1, characterized in that: It also includes a first elastic reset part connected to the rotating part; When the rotating part (2) is driven to rotate to the predetermined angle by the moving part (3), the first elastic reset part stores energy, and when the first elastic reset part releases energy, it can drive the rotating part (2) to reset, and the limiting body (6) enters the first arc-shaped groove (101).

3. The limiting and unlocking device according to claim 2, characterized in that: The first elastic reset part includes a first tension spring (4); One end of the first tension spring (4) is connected to the rotating shaft of the pull-wire unlocking part (1), and the other end of the first tension spring (4) is connected to the pin (201) located on the rotating part (2).

4. The limiting and unlocking device according to claim 1, characterized in that: The pull-wire unlocking part (1) is provided with a second arc-shaped groove (102) arranged coaxially with the pull-wire unlocking part (1); The second arc-shaped groove (102) is connected to one end of the first arc-shaped groove (101), and when the seat cushion slides to the designated position, the limiting body (6) that slides out of the first arc-shaped groove (101) enters the second arc-shaped groove (102).

5. The limiting and unlocking device according to claim 4, characterized in that: When the limiting body (6) enters the second arc-shaped groove (102), it can limit the rotation angle of the pull-wire unlocking part (1).

6. The limiting and unlocking device according to claim 1, characterized in that: The rotating part (2) includes a sector gear rotatably mounted on the seat guide rail, and the moving part (3) includes a rack mounted on the seat cushion, the rack being meshed with the sector gear.

7. The limiting and unlocking device according to claim 1, characterized in that: A second elastic reset part is provided between the pull-wire unlocking part (1) and the seat guide rail; When the pull-wire unlocking part (1) is driven to rotate by the external force, the second elastic reset part stores energy and releases energy, which can drive the pull-wire unlocking part (1) to reset.

8. The limiting and unlocking device according to claim 7, characterized in that: The second elastic reset part includes a second tension spring (5); One end of the second tension spring (5) is connected to the cable unlocking part (1), and the other end of the second tension spring (5) is connected to the connecting bracket (7) fixed on the seat guide rail.

9. The limiting and unlocking device according to any one of claims 1 to 8, characterized in that: One end of the pull-wire unlocking part (1) is provided with a hook (104), and the pull-wire unlocking part (1) receives the drive of the external force through the hook (104).

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

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