Locking mechanism, seat and vehicle

Abstract

The present disclosure relates to the technical field of vehicles, in particular to a locking mechanism, a seat and a vehicle. The locking mechanism provided by the present disclosure comprises a first connecting rod, a second connecting rod and a clamping piece. An upper end of the first connecting rod is provided with a first rotary connecting part, and a lower end of the first connecting rod is rotatably connected with the clamping piece. One end of the second connecting rod is rotatably connected with a middle region of the first connecting rod, and an end portion of the second connecting rod away from the one end rotatably connected with the first connecting rod is provided with a locking piece. The clamping piece is provided with a mounting part and a clamping part matched with the locking piece. When the locking piece slides to the position of the clamping part, the locking piece is clamped and matched with the clamping part. When the locking piece rotates to the clamping part and is clamped with the clamping part, the first connecting rod and the second connecting rod are locked, and there is no activity after being locked, so that complete locking can be realized, the passengers in the back row are facilitated to get in and out, the safety of passengers can be ensured, and collision injury can be avoided.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more particularly to a locking mechanism, a seat, and a vehicle. Background Technology

[0002] Easy-entry seats, also known as seats with easy entry, are seats that can be lifted and slid forward to create enough space for rear passengers to enter. Traditional easy-entry seats usually do not self-lock when flipped forward, relying on an internal assist structure to hold the seat in place, which poses a safety risk. Summary of the Invention

[0003] To address the aforementioned technical problems, this disclosure provides a locking mechanism, a seat, and a vehicle.

[0004] The first aspect of this disclosure provides a locking mechanism, including a first link, a second link, and a locking member.

[0005] The upper end of the first connecting rod has a first rotating connection portion, and the lower end of the first connecting rod is rotatably connected to the engaging member;

[0006] One end of the second link is rotatably connected to the middle region of the first link, and a locking element is provided at the end of the second link away from the end rotatably connected to the first link;

[0007] The engaging component is provided with an mounting portion and a snap-fit ​​portion adapted to the locking component. When the locking component slides to the snap-fit ​​portion position, it engages with the snap-fit ​​portion.

[0008] Furthermore, the locking member includes a protrusion, and the engaging portion includes a groove. The protrusion engages with the groove so that when the protrusion engages with the groove, the first connecting rod and the second connecting rod are locked together.

[0009] Furthermore, the first connecting rod and the second connecting rod are connected by a pivot, and the pivot is fitted with a first return spring, the two ends of which are respectively connected to the first connecting rod and the second connecting rod.

[0010] Furthermore, the length of the second link is greater than half the length of the first link.

[0011] Furthermore, the second link is rotatably connected to the first link at one-third of its length.

[0012] Furthermore, the protrusion is cylindrical.

[0013] Furthermore, along the sliding direction, the groove is formed with a first inclined surface;

[0014] Along the sliding direction, the groove has a second inclined surface.

[0015] Furthermore, it also includes a slide rail assembly, the engaging member of the locking mechanism is fixed on the slide rail assembly, and the slide rail assembly is provided with a return mechanism, which is used to separate the locking member from the engaging part.

[0016] A second aspect of this disclosure provides a seat, including the locking mechanism described in the first aspect; a first rotatable connection portion of the first link is rotatably connected to the seat frame.

[0017] This disclosure provides a third aspect of a vehicle, including the locking mechanism described in the first aspect or the seat described in the second aspect.

[0018] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0019] The locking mechanism provided in this embodiment includes a first link, a second link, and a locking member. The upper end of the first link has a first rotatable connecting portion, and the lower end of the first link is rotatably connected to the locking member. One end of the second link is rotatably connected to the middle region of the first link, and a locking member is provided at the end of the second link away from the rotatably connected end of the first link. The locking member has a mounting portion and a locking portion adapted to the locking member. When the locking member slides to the locking portion position, it engages with the locking portion. The locking member engages with the locking portion so that when the locking member rotates to the locking portion and engages with it, the first link and the second link are locked. The first rotatable connecting portion is used to connect to the seat frame. When the seat flips forward, the first link rotates around the locking member, and the second link rotates around the first link. The locking member at the end of the second link rotates toward the locking portion until it engages with the locking portion. After the locking member engages with the locking portion, the first link and the second link are locked. In this embodiment, the locking member engages with the latching part to lock the seat when it flips forward, which effectively limits the seat's movement. Once locked, there is no room for movement, allowing for complete locking. This facilitates entry and exit for rear passengers and is easy to operate. It has the advantages of simple structure, easy operation, low cost, and high stability. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

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

[0022] Figure 1This is an exploded view of the seat described in an embodiment of this disclosure;

[0023] Figure 2 This is a structural schematic diagram of the seat described in an embodiment of this disclosure;

[0024] Figure 3 This is a side view of the seat described in an embodiment of this disclosure;

[0025] Figure 4 This is another side view of the seat described in an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of another structure of the seat described in an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the locking state of the locking mechanism in the seat described in the embodiments of this disclosure.

[0028] Reference numerals: 1. Seat frame; 21. Upper slide rail; 22. Lower slide rail; 31. First link; 32. Second link; 321. Locking element; 33. Third link; 34. Fourth link; 4. Engaging element; 41. Engaging part; 51. Paddle; 511. Drive part; 512. Actuating part; 52. Actuating seat; 521. Abutment surface; 53. First return spring; 54. Second return spring; 55. Support frame. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0031] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the locking mechanism includes a first connecting rod 31, a second connecting rod 32, and a locking member 4. The upper end of the first connecting rod 31 has a first rotating connection portion, and the lower end of the first connecting rod 31 is rotatably connected to the locking member 4. One end of the second connecting rod 32 is rotatably connected to the middle region of the first connecting rod 31, and a locking member 321 is provided at the end of the second connecting rod 32 away from the end rotatably connected to the first connecting rod 31. The locking member 4 has a mounting portion and a locking portion 41 adapted to the locking member 321. When the locking member 321 slides to the locking portion 41, it engages with the locking portion 41. When the locking member 321 rotates to the locking portion 41 and engages with it, the first connecting rod 31 and the second connecting rod 32 are locked. The first rotating connection portion is used to connect to the seat frame. When the seat flips forward, the first connecting rod 31 rotates around the locking member 4, and the second connecting rod 32 rotates around the first connecting rod 31 (to...). Figure 3 The locking member 321, located at the end of the second connecting rod 32 (clockwise), rotates toward the engaging part 41 until the locking member 321 engages with the engaging part 41. After the locking member 321 engages with the engaging part 41, the first connecting rod 31 and the second connecting rod 32 are locked together. In this embodiment, the locking member 321 engages with the engaging part 41 to lock the seat when it flips forward, which provides a good limiting effect on the seat. After locking, there is no room for movement, and it can achieve complete locking, which facilitates the entry and exit of rear passengers. It is also easy to operate and has the advantages of simple structure, easy operation, low cost, and high stability.

[0032] In some specific embodiments, the locking member 321 includes a protrusion, and the engaging part 41 includes a groove. The protrusion and the groove engage to lock the first connecting rod 31 and the second connecting rod 32. That is, when the protrusion falls into the groove, the angle α between the force direction of the slide rail assembly on the second connecting rod 32 and the two-force direction of the second connecting rod 32 is less than the friction self-locking angle, thus locking the mechanism. When the seat flips forward, the first connecting rod 31 rotates around the slide rail assembly, and the second connecting rod 32 rotates around the first connecting rod 31. The protrusion at the end of the second connecting rod 32 rotates toward the groove until the protrusion engages with the groove. After the locking member 321 engages with the engaging part 41, the first connecting rod 31 and the second connecting rod 32 are locked. The locking when the seat flips forward is achieved by the engagement of the protrusion and the groove. Once locked, there is no room for movement, achieving complete locking. Optionally, the locking member 321 can be a columnar protrusion. Optionally, the locking element 321 is a pin, which engages with the groove. The seat provided in this embodiment has fewer components compared to existing easy-access seat structures, and is easy and quick to assemble. It can provide good support and limit the seat after it is reversed forward, locking it in a designated position to ensure occupant safety and avoid collision injuries.

[0033] In some specific embodiments, the first connecting rod 31 and the second connecting rod 32 are connected by a pivot, and a first return spring 53 is sleeved on the pivot. The two ends of the first return spring 53 are connected to the first connecting rod 31 and the second connecting rod 32, respectively. When return to its original position is required, the locking member 321 disengages from the locking part 41, that is, the protrusion disengages from the groove. Under the action of the first return spring 53, the second connecting rod 32 rotates around the first connecting rod 31 (towards...). Figure 3 (In the counterclockwise direction) to unlock and return the mechanism to its original position. The torque of the first return spring 53 can provide a force to rotate the second link 32, making it easier for the locking member 321 to disengage from the locking part 41.

[0034] In some specific embodiments, the length of the second link 32 is greater than half the length of the first link 31. That is, the length of the second link 32 is greater than half the length of the first link 31, which facilitates the rotation of the first link 31 around the slide rail assembly and the rotation of the second link 32 around the first link 31, so that the locking member 321 engages with the locking part 41.

[0035] In some specific embodiments, the second link 32 is rotatably connected to the first link 31 at one-third of its length, which facilitates the first link 31 to rotate around the slide rail assembly and the second link 32 to rotate around the first link 31, so that the locking member 321 is engaged with the locking part 41.

[0036] In some specific embodiments, the protrusion is cylindrical to facilitate the locking member 321 to engage with the snap-fit ​​part 41.

[0037] In some specific embodiments, the groove has a first inclined surface along the sliding direction; and a second inclined surface along the sliding direction, which facilitates the locking member 321 and the locking part 41 to engage and disengage.

[0038] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the seat provided in this embodiment includes a seat frame 1 and a slide rail assembly. A locking mechanism is provided between the seat frame 1 and the slide rail assembly. The first rotating connection part of the first link 31 is rotatably connected to the seat frame.

[0039] In some specific embodiments, the locking mechanism's engaging member 4 is fixed to the slide rail assembly, which is equipped with a return mechanism. This return mechanism separates the locking member 321 from the engaging part 41. When return is required, the return mechanism disengages the locking member 321 from the engaging part 41, thus unlocking the locking mechanism. Since the rotating shaft is fitted with a first return spring 53, whose two ends are connected to the first connecting rod 31 and the second connecting rod 32 respectively, after the return mechanism disengages the locking member 321 from the engaging part 41, the torque of the first return spring 53 provides a force for the second connecting rod 32 to rotate, facilitating its rotation and thus disengaging the locking member 321 from the engaging part 41.

[0040] In some specific embodiments, the slide rail assembly includes an upper slide rail 21 and a lower slide rail 22, which are slidably engaged. A locking element is disposed on the upper slide rail 21. When the seat frame 1 is pushed forward, the upper slide rail 21 can slide forward relative to the lower slide rail 22. A first connecting rod 31 rotates around the slide rail assembly, and a second connecting rod 32 rotates around the first connecting rod 31. Figure 3 In a clockwise direction, the locking member 321 located at the end of the second connecting rod 32 rotates toward the engaging part 41 until the locking member 321 engages with the engaging part 41. The engagement of the locking member 321 with the engaging part 41 locks the seat when it flips forward, effectively limiting its movement. This allows the seat to flip forward, creating sufficient space for passengers to easily access the rear seats. It features a simple structure, ease of operation, low cost, and high stability. When the seat needs to be returned to its usable state, the seat frame 1 is pushed backward, causing the upper slide rail 21 to slide backward relative to the lower slide rail 22. The return mechanism disengages the locking member 321 from the engaging part 41, unlocking the locking mechanism. This embodiment uses friction self-locking to lock the seat in its highest position and can break the self-lock at a pre-set position to unlock and return to its original position.

[0041] Optionally, the engaging component 4 is connected to the upper slide rail 21 by fasteners or by welding. The lower end of the first connecting rod 31 is rotatably connected to the engaging component 4, and the engaging part 41 is provided on the engaging component 4.

[0042] In some specific embodiments, the return mechanism includes a lever 51 and a lever seat 52. The lever seat 52 is fixedly connected to the lower slide rail 22. The lever seat 52 and the lower slide rail 22 can be connected by welding or by fasteners. The lever 51 is rotatably connected to the upper slide rail 21. Optionally, the lever 51 is rotatably connected to the upper slide rail 21 or the engaging member 4. The lever 51 is connected to the upper slide rail 21 or the engaging member 4 via a rotating shaft. The lever 51 includes a driving part 511 and a lever part 512. The driving part 511 abuts against the lever seat 52. The lever part 512 is used to separate the locking member 321 from the engaging part 41 when the lever seat 52 drives the driving part 511 to rotate. When the seat needs to be returned to its usable position, the seat frame 1 is pushed backward, causing the upper slide rail 21 to slide backward relative to the lower slide rail 22. The actuating seat 52 abuts against the paddle 51 and pushes the paddle 51 to rotate around the pivot. As the paddle 51 rotates, the actuating part pushes or pries the locking member 321, causing the locking member 321 to separate from the latching part 41. By pushing the paddle 51 with the drive seat, the locking member 321 is disengaged from the latching part 41, thus unlocking the locking mechanism. This embodiment of the present disclosure achieves locking of the seat in its highest position through friction self-locking, and the self-locking can be broken at a pre-set position to unlock and return the seat to its original position.

[0043] In some specific embodiments, the actuating seat 52 includes an abutting surface 521 that abuts against the paddle 51. The abutting surface 521 is inclined, which facilitates the actuating seat 52 to give the paddle 51 a stable pushing force, so that the paddle 51, while rotating, pushes or pries the locking member 321, thereby separating the locking member 321 from the latching part 41.

[0044] In some specific embodiments, a second return spring 54 is provided between the paddle 51 and the upper slide rail 21, with both ends of the second return spring 54 connected to the upper slide rail 21 and the paddle 51, respectively. Optionally, the second return spring 54 is disposed between the paddle 51 and the engaging member 4, with both ends of the second return spring 54 connected to the engaging member 4 and the paddle 51, respectively. When it is necessary to return the seat to the use state, the seat frame 1 is pushed backward, the upper slide rail 21 slides backward relative to the lower slide rail 22, the actuating seat 52 abuts against the paddle 51 and pushes the paddle 51 to rotate around the pivot. Figure 3 In a clockwise direction, when the paddle 51 rotates, the second return spring 54 is stretched. Simultaneously, the paddle 51's actuating part pushes or pries the locking member 321, causing the locking member 321 to separate from the latching part 41. When the upper slide rail 21 slides forward relative to the lower slide rail 22, the actuating seat 52 and the paddle 51 gradually separate. Under the elastic restoring force of the second return spring 54, the paddle 51 rotates... Figure 3 The counterclockwise direction of the latching part 41 is avoided so that the locking part and the latching part 41 can be latched together, that is, the lever 51 avoids the groove so that the protrusion and the groove can be latched together.

[0045] In some specific embodiments, the seat further includes a third link 33 and a fourth link 34. The two ends of the third link 33 are rotatably connected to the seat frame 1 and the upper slide rail 21, respectively, and the two ends of the fourth link 34 are also rotatably connected to the seat frame 1 and the upper slide rail 21, respectively. Optionally, a support frame 55 is fixed to the upper slide rail 21. The support frame 55 is connected to the upper slide rail 21 by fasteners or welding, and the third link 33 and the fourth link 34 are rotatably connected to the support frame 55.

[0046] In summary, the seat provided in this embodiment has fewer components compared to existing easy-access seat structures, and is quick and easy to assemble. It provides good support and locking function after the seat is reversed forward, ensuring occupant safety and preventing collision injuries. Returning to its original position simply requires sliding the seat backward to the designated position, making operation convenient.

[0047] The vehicle provided in this embodiment includes the seat provided in this embodiment. Since the vehicle and the seat provided in this embodiment have the same advantages, they will not be described again here.

[0048] The components of this invention are fewer than those of existing easy-access seat structures, and assembly is convenient and quick.

[0049] The seat is designed to provide excellent support and limit its movement after it has been reversed forward, locking it in place to ensure occupant safety and prevent collision injuries. To return to its original position, simply slide the seat backward to the designated location; the operation is very convenient.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0051] The above are merely specific embodiments of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking mechanism, characterized in that, Includes the first link, the second link, and the locking mechanism. The upper end of the first connecting rod has a first rotating connection portion, and the lower end of the first connecting rod is rotatably connected to the engaging member; One end of the second link is rotatably connected to the middle region of the first link, and a locking element is provided at the end of the second link away from the end rotatably connected to the first link; The engaging component is provided with an mounting portion and a snap-fit ​​portion adapted to the locking component. When the locking component slides to the snap-fit ​​portion position, it engages with the snap-fit ​​portion. It also includes a slide rail assembly, the engaging member of the locking mechanism is fixed on the slide rail assembly, the slide rail assembly is provided with a return mechanism, the return mechanism is used to separate the locking member from the engaging part; The slide rail assembly includes an upper slide rail and a lower slide rail, which are slidably engaged; the engaging member is disposed on the upper slide rail. The return mechanism includes a lever and a lever seat. The lever seat is fixedly connected to the lower slide rail, and the lever is rotatably connected to the upper slide rail. The lever is connected to the upper slide rail or the locking member via a rotating shaft. The first rotating connection part is used to connect with the seat frame; The paddle includes a driving part and a toggle part. The driving part abuts against the toggle seat. The toggle part is used to separate the locking member from the latching part when the toggle seat drives the driving part to rotate. When the seat needs to be returned to the use state, the seat frame is pushed backward, the upper slide rail slides backward relative to the lower slide rail, the toggle seat abuts against the paddle and pushes the paddle to rotate around the pivot. While the paddle is rotating, the toggle part pushes or pries the locking member to separate the locking member from the latching part.

2. The locking mechanism according to claim 1, characterized in that, The locking member includes a protrusion, and the engaging portion includes a groove. The protrusion engages with the groove so that when the protrusion engages with the groove, the first connecting rod and the second connecting rod are locked together.

3. The locking mechanism according to claim 1, characterized in that, The first connecting rod and the second connecting rod are connected by a rotating shaft. The rotating shaft is fitted with a first return spring, and the two ends of the first return spring are respectively connected to the first connecting rod and the second connecting rod.

4. The locking mechanism according to claim 1, characterized in that, The length of the second link is greater than half the length of the first link.

5. The locking mechanism according to claim 1, characterized in that, The second link is rotatably connected to the first link at one-third of its length.

6. The locking mechanism according to claim 2, characterized in that, The protrusion is cylindrical.

7. The locking mechanism according to claim 2, characterized in that, Along the sliding direction, the groove is formed with a first inclined surface; Along the sliding direction, the groove has a second inclined surface.

8. A type of seat, characterized in that, It includes a seat frame and a locking mechanism as described in any one of claims 1 to 7; the first rotating connection portion of the first link is rotatably connected to the seat frame.

9. A vehicle, characterized in that, Includes the locking mechanism as described in any one of claims 1 to 7; Or, including the seat as described in claim 8.

Images