An external unlocking mechanism, a sliding rail and a use method of the external unlocking mechanism

Abstract

The application discloses an external unlocking mechanism, which comprises a locking card, an unlocking rod assembly, a driving assembly and an unlocking support, and further provides a slide rail, which comprises a fixed rail, a sliding rail and the external unlocking mechanism, and further provides a use method of the external unlocking mechanism, which comprises the following steps: unlocking, adjusting a position and locking in place. The application has the advantages that the external unlocking mechanism can effectively prevent the locking card from being accidentally locked due to accidental release of the driving assembly during movement of the seat, ensures that the seat cannot be mistakenly locked during movement of the seat, improves operation convenience and safety, and thus achieves the advantage that the seat position can be conveniently and greatly adjusted, and the external unlocking mechanism is particularly suitable for occasions where the seat needs to be moved for a long distance. The external unlocking mechanism is arranged outside the slide rail, the arrangement difficulty and complexity of the unlocking mechanism in the slide rail are reduced, the manufacturing cost is effectively reduced, and the external unlocking mechanism has high reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unlocking mechanisms, in particular to an external unlocking mechanism, a slide rail and a use method of the external unlocking mechanism. BACKGROUND

[0002] In the process of using a car seat, in order to meet different use scenarios, it is often necessary to adjust the position of the seat. In a car seat, a slide rail is an important mechanical component, and the slide rail is usually installed under the seat for adjusting the position of the seat forward and backward. With the continuous improvement of the level of the automobile industry, people have higher requirements for the convenience of using the seat and the reliability of the seat slide rail.

[0003] The Chinese patent application file with publication number CN109278595A discloses an external unlocking manual sliding car seat slide rail. It includes a control lever and a slide rail, the slide rail includes a left slide rail and a right slide rail, the left slide rail and the right slide rail are symmetrically arranged on both sides of the control lever, and are connected with the control lever through a core-pulling rivet. The left slide rail and the right slide rail each include a slide channel, a slide core, a lock tooth plate, an unlocking pressure assembly, a mounting gasket, a retainer, a control lever support plate, a control lever connecting plate and a return torsion spring.

[0004] In a traditional seat, the car seat can be locked at any time when the slide rail moves to any position, but the car seat sometimes needs to be adjusted by a large margin. Especially in the use process of the middle row seat in the car, when the rear row needs to be seated or carry goods, the middle row seat needs to be moved forward by a large margin to ensure that the rear row has enough space, and when the rear row does not need to be used, the middle row seat needs to be moved backward by a large margin to increase the seating space of the middle row and improve the seating comfort of the passengers in the middle row. When the seat position needs to be adjusted by a large margin, the external unlocking manual sliding car seat slide rail in the above-mentioned is prone to terminate sliding due to the mislocking of the slide rail, causing inconvenience in use. Therefore, there is a problem of inconvenient large margin adjustment of the seat position in the prior art. SUMMARY

[0005] In order to solve the above technical problems, the purpose of the present application is to provide an external unlocking mechanism, which includes a locking piece, an unlocking lever assembly, a driving assembly and an unlocking bracket, to provide a slide rail, which includes a fixed rail, a sliding rail and the external unlocking mechanism in the above-mentioned, and to provide a use method of the external unlocking mechanism, which includes the following steps: unlocking, adjusting the position, locking in place. The external unlocking mechanism has the advantage of facilitating large margin adjustment of the seat position.

[0006] To achieve the above-mentioned purposes, the technical solutions adopted by the present application are as follows:

[0007] The external unlocking mechanism comprises a lock, a unlocking lever assembly, a driving assembly and a pressing assembly, the pressing assembly is fixedly connected with the unlocking lever assembly and is connected with the lock, characterized in that: further comprising an unlocking support, the unlocking lever assembly is provided with an unlocking sliding pin, the top of the unlocking support is provided with an unlocking sliding surface abutting against the unlocking sliding pin, the two ends of the unlocking support are respectively provided with a first locking area and a second locking area, the unlocking support is provided with a first guide plate and a second guide plate, the first guide plate and the second guide plate are respectively located at the two ends of the unlocking support close to the first locking area and the second locking area, the first guide plate and the second guide plate are inclined downward along the direction away from the unlocking support, and the first guide plate and the second guide plate are both abutted against the unlocking sliding pin.

[0008] By such an arrangement, the lock can be effectively prevented from being accidentally locked due to accidental release of the driving assembly during movement of the seat, so that the seat is not mistakenly locked during movement, the operation convenience and safety are improved, and the seat position can be conveniently and greatly adjusted, which is especially suitable for occasions where the seat needs to be moved for a long distance. The external unlocking mechanism is arranged outside the slide rail, the arrangement difficulty and complexity of the unlocking mechanism in the slide rail are saved, the manufacturing cost is effectively reduced, and the reliability is high.

[0009] Preferably, the driving assembly comprises a clamping plate and an unlocking cable, the unlocking cable comprises a steel wire rope and a sleeve, the steel wire rope is arranged in the sleeve, the sleeve is connected with the clamping plate, and the steel wire rope is connected with the unlocking lever assembly.

[0010] By such an arrangement, the function of moving the unlocking lever assembly by the driving assembly is realized, the steel wire rope is protected, and the spatial arrangement of the unlocking cable is facilitated.

[0011] Preferably, the driving assembly further comprises an unlocking handle, and the unlocking handle is connected with the steel wire rope.

[0012] By such an arrangement, the effect of facilitating movement of the unlocking lever assembly is achieved, and the seat position can be conveniently adjusted.

[0013] Preferably, the pressing assembly is provided with an elastic member for driving the pressing assembly to flip away from the lock.

[0014] By such an arrangement, the pressing assembly can be prevented from shaking and pressing the lock to cause accidental unlocking, and the safety is improved.

[0015] Preferably, the unlocking sliding pin comprises a sliding pin shaft and a rotating plastic sleeve, the sliding pin shaft is fixedly connected with the unlocking lever assembly, the rotating plastic sleeve is rotatably connected with the sliding pin shaft, and the rotating plastic sleeve abuts against the unlocking sliding surface.

[0016] By such an arrangement, the resistance, vibration and noise can be reduced, and the product quality can be improved.

[0017] As preferred, the rotating plastic sleeve is provided with a through slot near one end of the unlocking rod assembly, the unlocking rod assembly is provided with a clamping block at the through slot, and the sliding pin shaft is provided with a clamping groove matched with the clamping block.

[0018] By such an arrangement, the resistance of the clamping block during the clamping process is reduced, and the rotating plastic sleeve can be conveniently installed on the sliding pin shaft.

[0019] As preferred, the pressing assembly includes a rotating shaft, a pressing plate and a fixing frame, the unlocking rod assembly is fixedly connected with the pressing plate, the rotating shaft is hingedly connected with the pressing plate, the rotating shaft is fixedly connected with the fixing frame, the unlocking rod assembly is fixedly connected with the rotating shaft, and the two ends of the rotating shaft are fixedly connected with the pressing plate respectively.

[0020] By such an arrangement, the synchronization of the locking and limiting of the two groups of sliding rails is ensured by a simple structure and fewer parts, the reliability is higher, and the manufacturing cost is reduced.

[0021] A sliding rail includes a fixed rail and a sliding rail, and further includes the external unlocking mechanism described above, the external unlocking mechanism is installed on the sliding rail, the sliding rail is fixedly connected with a rail limiting support, the fixed rail is fixedly connected with a stroke limiting support, and the stroke limiting support is clamped with the rail limiting support.

[0022] By such an arrangement, the movement range of the sliding rail on the fixed rail is limited, the sliding rail is limited, and the movement of the seat is limited.

[0023] A use method of an external unlocking mechanism, the external unlocking mechanism includes a clamping block, an unlocking rod assembly and a driving assembly, the unlocking rod assembly is fixedly connected with a pressing assembly clamped with the clamping block, further includes an unlocking support, the unlocking rod assembly is installed with an unlocking sliding pin, the unlocking support is provided at the top with an unlocking sliding surface abutting against the unlocking sliding pin, the unlocking support is provided at both ends with a first locking area and a second locking area respectively, the unlocking support is provided with a first guide plate and a second guide plate, the first guide plate and the second guide plate are respectively located at both ends of the unlocking support close to the first locking area and the second locking area, the first guide plate and the second guide plate are inclined downward along the direction away from the unlocking support, and the first guide plate and the second guide plate are both abutted with the unlocking sliding pin.

[0024] The use method includes the following steps:

[0025] S1, unlocking: the unlocking sliding pin is located in the first locking area, the driving assembly drives the unlocking lever assembly and the pressing assembly to move, and the pressing assembly presses the lock catch to unlock the lock catch;

[0026] S2, adjusting position: moving the lock catch and the unlocking lever assembly drives the unlocking sliding pin to move to the second locking area and abut against the first guide plate, the unlocking sliding pin moves along the first guide plate to the unlocking sliding surface, the unlocking support supports the unlocking sliding pin, the unlocking lever assembly drives the pressing assembly to keep pressing the lock catch, the unlocking sliding pin continues to move to the second locking area, and the unlocking sliding pin passes through the second guide plate and leaves the unlocking sliding surface;

[0027] S3, locking in place: the unlocking sliding pin is located in the second locking area, and the pressing assembly releases the lock catch to enter the locking state.

[0028] By such an arrangement, accidental locking of the lock catch due to accidental release of the driving assembly during movement of the seat can be effectively prevented, ensuring that the seat will not be mistakenly locked during movement, improving operation convenience and safety, thereby achieving the advantage of facilitating large-scale adjustment of the seat position, and being particularly suitable for occasions where the seat needs to be moved for a long distance. The external unlocking mechanism is arranged outside the slide rail, saving the arrangement difficulty and complexity of the unlocking mechanism inside the slide rail, effectively reducing the manufacturing cost, and having high reliability.

[0029] As a preferred arrangement, the pressing assembly includes two pressing plates, the unlocking lever assembly includes a synchronous lever, the synchronous lever is fixedly connected to the pressing plates at both ends, two lock catches are provided, the two lock catches and the two pressing plates are one-to-one corresponding, the unlocking lever assembly is connected to two unlocking levers at both ends, and the two unlocking levers are symmetrically arranged with the unlocking lever assembly as the center;

[0030] In the step S1, the following steps are further included:

[0031] The unlocking lever assembly drives the two pressing plates to press the two lock catches simultaneously through the synchronous lever, so that the two lock catches are unlocked synchronously;

[0032] In the step S2, the following steps are further included:

[0033] The unlocking lever assembly drives the two pressing plates to keep pressing the two lock catches through the synchronous lever;

[0034] In the step S3, the following steps are further included:

[0035] The unlocking lever assembly drives the two pressing plates to release the two lock catches synchronously through the synchronous lever.

[0036] Through the arrangement, the synchronization of locking and limiting of the two groups of slide rails is ensured by simple structure and less parts, high reliability is achieved, and manufacturing cost is reduced.

[0037] Compared with the prior art, the application has the beneficial technical effects:

[0038] 1. When the position of the seat needs to be adjusted, the unlocking lever assembly and the pressing assembly are driven by the driving assembly to move and press the lock catch, so that the lock catch is unlocked, and then the seat can be pushed to move. During the movement of the seat, the unlocking sliding pin can move to the unlocking sliding surface, so that the unlocking support can abut against the unlocking sliding pin, thereby supporting the unlocking sliding pin and the unlocking lever assembly, preventing the unlocking lever assembly from rotating towards the unlocking support and preventing the pressing assembly from releasing the lock catch, thereby effectively preventing the lock catch from being accidentally locked due to accidental release of the driving assembly during movement of the seat, ensuring that the seat will not be mistakenly locked during movement, improving operation convenience and safety, thereby achieving the advantage of conveniently adjusting the position of the seat, and being especially suitable for occasions where the seat needs to be moved for a long distance.

[0039] 2. The external unlocking mechanism is arranged outside the slide rail, saving the arrangement difficulty and complexity of the unlocking mechanism inside the slide rail, and effectively reducing the manufacturing cost.

[0040] 3. During the movement of the unlocking sliding pin to the unlocking sliding surface, the unlocking sliding pin can abut against the first guide plate and the second guide plate, so that the unlocking sliding pin can be inclined upward along the contour of the first guide plate and the second guide plate to the unlocking sliding surface, thereby guiding the unlocking sliding pin and preventing the unlocking sliding pin from being stuck during movement, thereby improving reliability.

[0041] 4. Through the arrangement of two lock catches, two sets of slide rails can be locked respectively. The two pressing plates are connected at both ends of the synchronous rod, so that the two pressing plates can press the two lock catches synchronously, thereby ensuring the synchronization of locking and limiting of the two groups of slide rails by simple structure and less parts, achieving high reliability, and reducing manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a structure diagram of an external unlocking mechanism in embodiment 1 of the application;

[0043] Figure 2 is a structure diagram of a lock catch in embodiment 1 of the application;

[0044] Figure 3 is a structure diagram of an unlocking sliding pin in embodiment 1 of the application;

[0045] Figure 4is a flowchart of a method for using an external unlocking mechanism in Embodiment 1 of the present application;

[0046] Figure 5 is a structural diagram of the unlocking sliding pin in the first locking area in Embodiment 1 of the present application;

[0047] Figure 6 is a structural diagram of the unlocking sliding pin on the unlocking sliding surface in Embodiment 1 of the present application;

[0048] Figure 7 is a structural diagram of the unlocking sliding pin in the second locking area in Embodiment 1 of the present application;

[0049] Figure 8 is a structural diagram of a sliding rail in Embodiment 2 of the present application.

[0050] In the drawings, the technical features referred to by the reference numerals are as follows:

[0051] 11, locking catch; 21, unlocking lever assembly; 22, unlocking sliding pin; 23, sliding pin shaft; 24, rotating plastic sleeve; 25, synchronization lever; 26, sliding pin fixing bracket; 31, driving assembly; 32, clamping plate; 33, steel wire rope; 34, sleeve; 35, unlocking handle; 41, pressing assembly; 42, elastic member; 43, pressing plate; 44, fixing bracket; 45, rotating shaft; 51, unlocking bracket; 52, unlocking sliding surface; 53, first guide plate; 54, second guide plate; 55, first locking area; 56, second locking area; 61, fixed rail; 62, sliding rail; 63, rail limiting bracket; 64, stroke limiting bracket. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with embodiments, but the scope of protection of the present application is not limited to the following specific embodiments.

[0053] Embodiment 1

[0054] Reference Figures 1 to 3The external unlocking mechanism comprises a lock card 11, an unlocking lever assembly 21, a driving assembly 31, an unlocking bracket 51 and a pressing assembly 41. The pressing assembly 41 is fixedly connected with the unlocking lever assembly 21 and is in clamping connection with the lock card 11. The lock card 11, the unlocking lever assembly 21, the pressing assembly 41 and the driving assembly 31 are installed on a sliding rail 62 and move with the movement of the seat. The unlocking bracket 51 is fixed on a fixed rail 61 and remains fixed. The lock card 11 is used for controlling the locking and unlocking between the fixed rail 61 and the sliding rail 62. The driving assembly 31 pulls the unlocking lever assembly 21. The unlocking lever assembly 21 drives the pressing assembly 41 to press the lock card 11, so that the lock card 11 is unlocked. When the driving assembly 31 releases the unlocking lever assembly 21, the pressing assembly 41 releases the lock card 11, so that the lock card 11 enters the locked state.

[0055] Reference Figure 1 And Figure 5 The unlocking lever assembly 21 is provided with an unlocking sliding pin 22. The top of the unlocking bracket 51 is provided with an unlocking sliding surface 52 in abutment with the unlocking sliding pin 22. The unlocking sliding pin 22 comprises a sliding pin shaft 23 and a rotating plastic sleeve 24. The sliding pin shaft 23 is fixedly connected with the unlocking lever assembly 21. A sliding pin fixing bracket 26 is arranged between the sliding pin shaft 22 and the unlocking lever assembly 21. The sliding pin fixing bracket 26 is fixed on the unlocking lever assembly 21. The sliding pin shaft 22 is fixed on the sliding pin fixing bracket 26.

[0056] The rotating plastic sleeve 24 is in rotating connection with the sliding pin shaft 23. The rotating plastic sleeve 24 is in abutment with the unlocking sliding surface 52. The rotating plastic sleeve 23 is assembled outside the unlocking sliding pin 22 in rotating cooperation. The unlocking bracket 51 is provided with a first locking area 55 and a second locking area 56 at two ends thereof. The movement distance of the unlocking sliding pin 22 in the second locking area 56 is greater than the movement distance of the unlocking sliding pin 22 in the first locking area 55. The unlocking bracket 51 is provided with a first guide plate 53 and a second guide plate 54. The first guide plate 53 and the second guide plate 54 are respectively located at two ends of the unlocking bracket 51 close to the first locking area 55 and the second locking area 56. The first guide plate 53 and the second guide plate 54 are inclined downward along the direction away from the unlocking bracket 51. The first guide plate 53 and the second guide plate 54 are in abutment with the unlocking sliding pin 22.

[0057] The driving assembly 31 comprises a clamping plate 32, an unlocking cable and an unlocking handle 35. The unlocking cable comprises a steel wire rope 33 and a sleeve 34. The steel wire rope 33 is arranged in the sleeve 34. The sleeve 34 is in clamping connection with the clamping plate 32. The steel wire rope 33 is connected with the unlocking lever assembly 21. The unlocking handle 35 is connected with the steel wire rope 33.

[0058] The pressing assembly 41 comprises a rotating shaft 45, a fixed frame 44 and two pressing plates 43. The unlocking lever assembly 21 is fixedly connected with the pressing plates 43, the rotating shaft 45 is hingedly connected with the pressing plates 43, the rotating shaft 45 is fixedly connected with the fixed frame 44, the fixed frame 44 is fixed on the sliding rail 62, the unlocking lever assembly 21 comprises a synchronous lever 25 and an unlocking pull rod, the unlocking pull rod is fixedly connected with the synchronous lever 25, and the steel wire rope 33 is connected with the unlocking pull rod. The synchronous lever 25 is fixedly connected with the pressing plates 43 at two ends respectively, two locking clamps 11 are arranged, and the two locking clamps 11 are arranged on the two sliding rails 62 respectively. The two locking clamps 11 and the two pressing plates 43 correspond to each other, and the two ends of the unlocking lever assembly 21 are connected with the two unlocking lever assemblies 21 respectively. The synchronous lever 25 is rotationally connected with the sliding rail 62, so that the sliding rail 62 can drive the locking clamps 11, the unlocking lever assembly 21 and the pressing assembly 41 to move through the synchronous lever 25. When the driving assembly 31 pulls the unlocking lever assembly 21, the unlocking lever assembly 21, the synchronous lever 25 and the pressing plate 43 can rotate with the axis of the synchronous lever 25 as the rotation center. The pressing assembly 41 is provided with an elastic element 42 for driving the pressing assembly 41 to overturn in a direction away from the locking clamps 11. The elastic element 42 is a torsion spring, and the two ends of the torsion spring are clamped with the sliding rail 62 and the pressing plate 43 respectively.

[0059] The locking clamps 11 adopt existing track locking clamps. When the pressing plates 43 press the locking clamps 11, the locking clamps 11 are unlocked, and the sliding rail 62 can slide on the fixed rail 61. When the pressing plates 43 release the locking clamps 11, the spring in the locking clamps 11 drives the locking clamps 11 to reset, and the sliding rail 62 is locked on the fixed rail 61 by the locking clamps 11, so as to realize the control of the locking state of the track by the locking clamps 11.

[0060] Reference Figure 4 A method for using the external unlocking mechanism, comprising the following steps:

[0061] S1, unlocking: reference Figure 5 The unlocking sliding pin 22 is located in the first locking area 55, the driving assembly 31 drives the unlocking lever assembly 21 and the pressing assembly 41 to move, the pressing assembly 41 presses the locking clamps 11 to unlock the locking clamps 11, the unlocking lever assembly 21 drives the two pressing plates 43 to press the two locking clamps 11 at the same time through the synchronous lever 25, and the two locking clamps 11 are unlocked synchronously.

[0062] S2, adjusting position: reference Figure 6, the moving lock 11 and the unlocking lever assembly 21 drive the unlocking sliding pin 22 to move to the second locking area 56 and abut against the first guide plate 53, the unlocking sliding pin 22 moves along the first guide plate 53 to the unlocking sliding surface 52, the unlocking support 51 supports the unlocking sliding pin 22, the unlocking lever assembly 21 drives the pressing assembly 41 to keep pressing the lock 11, the unlocking sliding pin 22 continues to move to the second locking area 56, the unlocking sliding pin 22 passes through the second guide plate 54 and is separated from the unlocking sliding surface 52; the unlocking lever assembly 21 drives the two pressing plates 43 to keep pressing the two locks 11 through the synchronous lever 25.

[0063] S3, position locking: referring to Figure 7 , the unlocking sliding pin 22 is located in the second locking area 56, the pressing assembly 41 releases the lock 11 so that the lock 11 enters the locking state; under the action of the elastic member 42, the two pressing plates 43 synchronously release the two locks 11, the lock 11 is automatically reset and unlocked under the action of the internal spring.

[0064] The embodiment has the following advantages:

[0065] When the position of the seat needs to be adjusted, the unlocking lever assembly 21 and the pressing assembly 41 are driven by the driving assembly 31 to move and press the lock 11, so that the lock 11 is unlocked, and then the seat can be pushed to move. In the process of pushing the seat to move, the unlocking sliding pin 22 can move to the unlocking sliding surface 52, so that the unlocking sliding pin 22 and the unlocking lever assembly 21 can be supported by the unlocking support 51, preventing the unlocking lever assembly 21 from rotating accidentally towards the unlocking support 51 and preventing the pressing assembly 41 from releasing the lock 11, thereby effectively preventing the lock 11 from being accidentally locked due to accidental release of the driving assembly 31 during movement of the seat, ensuring that the seat will not be mistakenly locked during movement, improving operation convenience and safety, thereby achieving the advantage of conveniently adjusting the position of the seat by a large distance, especially suitable for occasions where the seat needs to be moved for a long distance.

[0066] The external unlocking mechanism is arranged outside the slide rail, saving the arrangement difficulty and complexity of the internal unlocking mechanism of the slide rail and effectively reducing the manufacturing cost.

[0067] In the process of moving the unlocking sliding pin 22 to the unlocking sliding surface 52, the unlocking sliding pin 22 can abut against the first guide plate 53 and the second guide plate 54, so that the unlocking sliding pin 22 can be inclined upward along the contour of the first guide plate 53 and the second guide plate 54 to the unlocking sliding surface, thereby playing a role of guiding the unlocking sliding pin 22 and preventing the unlocking sliding pin 22 from being stuck during movement, thereby improving reliability.

[0068] Pulling the steel wire rope 33, the steel wire rope 33 drives the unlocking lever assembly 21 to move, thereby achieving the function of driving the unlocking lever assembly 21 to move through the driving assembly 31. The sleeve 34 covers the steel wire rope 33, which protects the steel wire rope 33 and guides the extension direction of the steel wire rope 33. The sleeve 34 can protect the steel wire rope 33 and facilitate the spatial arrangement of the unlocking cable. During the process of pulling the steel wire rope 33, the clamping plate 32 clamps the sleeve 34, preventing the sleeve 34 from moving with the steel wire rope 33, and ensuring that the steel wire rope 33 can pull the unlocking lever assembly 21 and reduce the wear of the sleeve 34.

[0069] Pulling the steel wire rope 33 through the unlocking handle 35, which facilitates pulling the steel wire rope 33, thereby facilitating the movement of the unlocking lever assembly 21, and achieving the advantage of facilitating the adjustment of the seat position.

[0070] When the steel wire rope 33 is loosened, the elastic member 42 drives the pressing assembly 41 to flip away from the lock catch 11, thereby ensuring that the pressing assembly 41 can loosen the lock catch 11 when the steel wire rope 33 does not provide tension, preventing the pressing assembly 41 from shaking and pressing the lock catch 11 to cause accidental unlocking, and improving safety.

[0071] During the movement of the unlocking sliding pin 22 on the unlocking sliding surface 52, the plastic sleeve 24 is in abutment with the unlocking sliding surface 52, and the plastic sleeve 24 can rotate on the sliding pin shaft 23, converting sliding friction into rotational friction, thereby reducing friction, reducing resistance, vibration and noise, and improving product quality.

[0072] The two lock catches 11 can lock two sets of sliding rails respectively. The two pressing plates 43 are connected by the synchronous rod 25, thereby synchronously pressing the two lock catches 11, ensuring the synchronization of the locking and limiting of the two groups of sliding rails with simple structure and fewer parts, while having high reliability and reducing manufacturing cost.

[0073] Embodiment 2:

[0074] Reference Figure 8 A sliding rail includes a fixed rail 61 and a sliding rail 62, and further includes the external unlocking mechanism in embodiment 1. The external unlocking mechanism is installed on the sliding rail 62. The sliding rail 62 is fixedly connected with a rail limiting support 63. The fixed rail 61 is fixedly connected with a stroke limiting support 64. The stroke limiting support 64 is clamped with the rail limiting support 63. Two stroke limiting supports 64 are provided. The rail limiting support 63 is located between the two stroke limiting supports 64. The fixed rail 61 is connected with a vehicle frame. The sliding rail 62 is connected with an automobile seat.

[0075] The embodiment has the following advantages:

[0076] The limit position of the sliding rail 62 is determined by the position of the stroke limiting bracket 64, and the movement range of the sliding rail 62 on the fixed rail 61 is limited by the mutual clamping of the rail limiting bracket 63 and the stroke limiting bracket 64, thereby playing a limiting role on the sliding rail 62. The seat is fixedly connected with the sliding rail 62, thereby realizing the function of limiting the movement of the seat.

[0077] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the application.

Claims

1. An external unlocking mechanism, comprising a lock catch (11), an unlocking lever assembly (21), a driving assembly (31) and a pressing assembly (41), the pressing assembly (41) is fixedly connected with the unlocking lever assembly (21) and is clamped with the lock catch (11), characterized in that: Further comprising an unlocking bracket (51), the unlocking lever assembly (21) is provided with an unlocking sliding pin (22), the unlocking bracket (51) is provided with an unlocking sliding surface (52) at the top, which is in abutment with the unlocking sliding pin (22), the unlocking bracket (51) is provided with a first locking area (55) and a second locking area (56) at both ends respectively, the unlocking bracket (51) is provided with a first guide plate (53) and a second guide plate (54), the first guide plate (53) and the second guide plate (54) are respectively located at the two ends of the unlocking bracket (51) close to the first locking area (55) and the second locking area (56), the first guide plate (53) and the second guide plate (54) are inclined downward in the direction away from the unlocking bracket (51), and the first guide plate (53) and the second guide plate (54) are in abutment with the unlocking sliding pin (22); the lock (11), the unlocking lever assembly (21), the pressing assembly (41) and the driving assembly (31) are installed on the sliding rail and move with the movement of the seat, and the unlocking bracket (51) is fixed on the fixed rail (61) and remains fixed.

2. The externally located unlocking mechanism of claim 1, wherein: The driving assembly (31) comprises a clamping plate (32) and an unlocking cable, the unlocking cable comprises a steel wire rope (33) and a sleeve (34), the steel wire rope (33) is arranged in the sleeve (34), the sleeve (34) is clamped with the clamping plate (32), and the steel wire rope (33) is connected with the unlocking lever assembly (21).

3. The externally located unlocking mechanism of claim 2, wherein: The driving assembly (31) further comprises an unlocking handle (35), and the unlocking handle (35) is connected with the steel wire rope (33).

4. The externally located unlocking mechanism of claim 1, wherein: The pressing assembly (41) is provided with an elastic member (42) for driving the pressing assembly (41) to flip in the direction away from the lock (11).

5. The externally located unlocking mechanism of claim 1, wherein: The unlocking sliding pin (22) comprises a sliding pin shaft (23) and a rotating plastic sleeve (24), the sliding pin shaft (23) is fixedly connected with the unlocking lever assembly (21), the rotating plastic sleeve (24) is rotatably connected with the sliding pin shaft (23), and the rotating plastic sleeve (24) is in abutment with the unlocking sliding surface (52).

6. The externally located unlocking mechanism of claim 1, wherein: The pressing assembly (41) comprises a rotating shaft (45), a pressing plate (43) and a fixing frame (44), the unlocking lever assembly (21) is fixedly connected with the pressing plate (43), the rotating shaft (45) is hinged with the pressing plate (43), the rotating shaft (45) is fixedly connected with the fixing frame (44), the unlocking lever assembly (21) is fixedly connected with the rotating shaft (45), the rotating shaft (45) is fixedly connected with the pressing plate (43) at both ends, and the lock (11) and the pressing plate (43) are provided with two respectively, and the two locks (11) and the two pressing plates (43) are one-to-one corresponding, and the unlocking lever assembly (21) is connected with the two unlocking lever assemblies (21) at both ends.

7. A slide rail comprising a fixed rail (61) and a slide rail (62), characterized in that: Further comprising the external unlocking mechanism in any one of claims 1-6, the external unlocking mechanism is installed on the sliding rail (62), the sliding rail (62) is fixedly connected with a rail limiting support (63), the fixed rail (61) is fixedly connected with a stroke limiting support (64), and the stroke limiting support (64) is clamped with the rail limiting support (63).

8. A method for using an external unlocking mechanism, the external unlocking mechanism comprising a lock catch (11), an unlocking lever assembly (21) and a driving assembly (31), the unlocking lever assembly (21) being fixedly connected with a pressing assembly (41) which is in engagement with the lock catch (11), characterized in that: Further comprising an unlocking bracket (51), the unlocking lever assembly (21) is provided with an unlocking sliding pin (22), the unlocking bracket (51) is provided with an unlocking sliding surface (52) at the top, which is in abutment with the unlocking sliding pin (22), the unlocking bracket (51) is provided with a first locking area (55) and a second locking area (56) at both ends respectively, the unlocking bracket (51) is provided with a first guide plate (53) and a second guide plate (54), the first guide plate (53) and the second guide plate (54) are respectively located at the two ends of the unlocking bracket (51) close to the first locking area (55) and the second locking area (56), the first guide plate (53) and the second guide plate (54) are inclined downward along the direction away from the unlocking bracket (51), and the first guide plate (53) and the second guide plate (54) are in abutment with the unlocking sliding pin (22); The use method comprises the following steps: S1, unlocking: the unlocking sliding pin (22) is located in the first locking area (55), the unlocking lever assembly (21) and the pressing assembly (41) are driven to move by the driving assembly (31), the pressing assembly (41) presses the lock catch (11) to unlock the lock catch (11); S2, adjusting position: moving the lock catch (11) and the unlocking lever assembly (21) drives the unlocking sliding pin (22) to move to the second locking area (56) and abut against the first guide plate (53), the unlocking sliding pin (22) moves along the first guide plate (53) to the unlocking sliding surface (52), the unlocking bracket (51) supports the unlocking sliding pin (22), so that the unlocking lever assembly (21) drives the pressing assembly (41) to keep pressing the lock catch (11), the unlocking sliding pin (22) continues to move to the second locking area (56), the unlocking sliding pin (22) passes through the second guide plate (54) and separates from the unlocking sliding surface (52); S3, locking in place: the unlocking sliding pin (22) is located in the second locking area (56), the pressing assembly (41) releases the lock catch (11) to make the lock catch (11) enter the locking state.

9. The method of using an external unlocking mechanism of claim 8, wherein: The pressing assembly (41) comprises two pressing plates (43), the unlocking lever assembly (21) comprises a synchronous lever (25), the synchronous lever (25) is fixedly connected with the pressing plates (43) at both ends respectively, the lock catch (11) is provided with two, the two lock catches (11) and the two pressing plates (43) correspond one by one, the unlocking lever assembly (21) is connected with two unlocking lever assemblies (21) at both ends respectively, and the two unlocking lever assemblies (21) are symmetrically arranged with the unlocking lever assembly (21) as the center; In the step S1, further comprising the following steps: The unlocking lever assembly (21) drives two pressing plates (43) to press two lock catches (11) at the same time through the synchronous lever (25), so that the two lock catches (11) are unlocked synchronously; In the step S2, further comprising the following steps: The unlocking lever assembly (21) drives two pressing plates (43) to keep pressing two lock catches (11) through the synchronous lever (25); In the step S3, further comprising the following steps: The unlocking rod assembly (21) drives two pressing plates (43) to synchronously release two locking clamps (11) through a synchronous rod (25).

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