Back door lock catch assembly and vehicle

Abstract

The utility model discloses a back door lock catch assembly and a vehicle. The back door lock catch assembly comprises a rear floor, a front door lock catch and a rear door lock catch, the limiting plate is arranged on the lower side of the rear floor, and the limiting plate and the rear floor jointly form a limiting sliding groove; the lock catch assembly comprises a lock catch piece and a sliding piece, the sliding piece is arranged in the limiting sliding groove in a sliding mode, the lock catch piece is arranged on the upper side of the rear floor and connected with the sliding piece, when the sliding piece slides, the lock catch piece slides along with the sliding piece, and the lock catch piece is suitable for being selectively matched with a lock body on the back door in a locking mode. Therefore, the slidable sliding part is arranged in the lock catch assembly, and the lock catch part is connected with the sliding part, so that the sliding part slides, the position of the lock catch part on the upper side of the rear floor can be easily changed, the position of the lock catch part can be adjusted according to the lock body, and the back door lock catch assembly can be conveniently adjusted in the installation process.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a back door lock assembly and a vehicle. Background Art

[0002] The rear door of an automobile is designed to be openable and closable, which is convenient for opening the rear side of the vehicle to use the trunk. At the same time, it can also protect the items in the trunk and the rear of the vehicle when closed. In the prior art, the opening and closing of the rear door are realized through the cooperation of a lock catch and a lock body.

[0003] In the related art, during the installation and adjustment of the rear door, problems such as misalignment between the lock catch and the lock body, resulting in inability to engage, are likely to occur. The traditional structure uses mounting nuts to fix the position of the lock catch, which is difficult to adjust, cannot quickly adjust the position of the lock catch, and thus affects the low installation efficiency of the rear door. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a back door lock assembly, which is convenient for adjusting the position of the lock catch during installation.

[0005] The utility model further provides a vehicle.

[0006] According to the back door lock assembly of the embodiment of the utility model, it includes: a rear floor; a limiting plate, the limiting plate is arranged on the lower side of the rear floor and forms a limiting sliding groove together with the rear floor; a lock catch assembly, the lock catch assembly includes a lock catch and a sliding member, the sliding member is slidably arranged in the limiting sliding groove, the lock catch is arranged on the upper side of the rear floor and is connected with the sliding member, so that when the sliding member slides, the lock catch slides along with the sliding member, and the lock catch is adapted to selectively lock and cooperate with the lock body on the back door.

[0007] Therefore, by arranging a slidable sliding member in the lock catch assembly and connecting the lock catch with the sliding member, when the sliding member slides, the position of the lock catch on the upper side of the rear floor can be easily changed, and the position of the lock catch can be adjusted according to the lock body, so as to facilitate the adjustment of the back door lock assembly during the installation process.

[0008] According to some embodiments of the utility model, the back door lock assembly further includes a connecting member, a first avoidance hole is arranged on the rear floor, the connecting member passes through the limiting sliding groove and connects the lock catch and the sliding member, and the first avoidance hole is adapted to avoid the sliding of the connecting member along with the sliding member, so that the connecting member drives the lock catch to slide along with the sliding member.

[0009] According to some embodiments of the present utility model, the connecting member is a fastener. A first through hole is provided on the locking member, and a second through hole is provided on the sliding member. The first through hole and the second through hole correspond to each other and are fixedly connected by the fastener. The aperture of the first avoidance hole is larger than the diameter of the fastener to avoid the fastener driving the locking member to slide along with the sliding member.

[0010] According to some embodiments of the present utility model, a second avoidance hole is provided at the bottom of the limiting plate. At least a part of the fastener protrudes from the sliding member and extends out from the second avoidance hole. The aperture of the second avoidance hole is larger than the diameter of the fastener to avoid the sliding of the fastener.

[0011] According to some embodiments of the present utility model, the fastener has an adjustment position and a fixed position. The fastener can move up and down between the adjustment position and the fixed position. When the fastener is in the adjustment position, the rear floor and the sliding member are spaced apart in the up-down direction; when the fastener is in the fixed position, the fastener selectively drives the locking member to press the rear floor downward so that at least a part of the rear floor and the sliding member are in up-down fit.

[0012] According to some embodiments of the present utility model, when the fastener is in the adjustment position, the distance between the rear floor and the sliding member in the up-down direction is L1, and L1 satisfies the relational expression: 0.4 mm ≤ L1 ≤ 0.6 mm, so as to ensure the sliding smoothness and structural reliability of the sliding member between the rear floor and the limiting plate.

[0013] According to some embodiments of the present utility model, the sliding member is spaced apart from the inner wall of at least one side in the left-right direction of the limiting sliding groove, and the sliding member is spaced apart from the inner wall of at least one side in the front-rear direction of the limiting sliding groove, so that the sliding member can slide in both the left-right direction and the front-rear direction in the limiting sliding groove.

[0014] According to some embodiments of the present utility model, the length of the limiting sliding groove in the left-right direction is L2, and the length of the sliding member in the left-right direction is L3. L2 and L3 satisfy the relational expression: 8 mm ≤ L2 - L3 ≤ 12 mm. In this way, not only can the adjustment requirements of the locking member in the left-right direction be met, but also the assembly accuracy of the back door lock assembly can be ensured.

[0015] According to some embodiments of the present utility model, the length of the limiting sliding groove in the front-rear direction is L4, and the length of the sliding member in the front-rear direction is L5. L4 and L5 satisfy the relational expression: 8 mm ≤ L4 - L5 ≤ 12 mm. In this way, not only can the adjustment requirements of the locking member in the front-rear direction be met, but also the assembly accuracy of the back door lock assembly can be ensured.

[0016] The vehicle according to the present utility model includes the back door latch assembly described above.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a perspective view of the back door latch assembly according to an embodiment of the present utility model;

[0020] Figure 2 is a perspective view of the back door latch assembly in another direction according to an embodiment of the present utility model;

[0021] Figure 3 is a cross-sectional view of the back door latch assembly according to an embodiment of the present utility model;

[0022] Figure 4 is a three-dimensional schematic diagram of the limit plate and the sliding member according to an embodiment of the present utility model;

[0023] Figure 5 is a schematic diagram of the limit plate and the sliding member according to an embodiment of the present utility model.

[0024] REFERENCE SIGNS:

[0025] 100, back door latch assembly; 200, lock body;

[0026] 10, rear floor; 11, first avoidance hole; 12, upper cross member of the rear floor; 13, lower cross member of the rear floor; 14, lock latch mounting reinforcement plate;

[0027] 20, limit plate; 21, second avoidance hole;

[0028] 30, limit sliding groove;

[0029] 40, lock latch assembly; 41, lock latch; 42, sliding member; 421, second perforation;

[0030] 50, connecting member; 60, adjustment reference scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Embodiments of the present utility model will be described in detail below.

[0032] The following figure reference Figures 1-5Describe the rear door latch assembly 100 according to an embodiment of the present utility model. The rear door latch assembly 100 according to an embodiment of the present utility model can be applied to a vehicle.

[0033] Combined with Figures 1-5 As shown, the rear door latch assembly 100 according to an embodiment of the present utility model mainly includes: a rear floor 10, a limit plate 20, and a latch assembly 40. Among them, the limit plate 20 is disposed on the lower side of the rear floor 10 and forms a limit chute 30 with the rear floor 10. The rear floor 10 can provide a stable and reliable setting position for the limit plate 20 to ensure the reliability of the limit chute 30 in the rear door latch assembly 100.

[0034] Furthermore, the sliding member 42 is located in the limit chute 30 jointly formed by the limit plate 20 and the rear floor 10. In this way, the limit plate 20 and the rear floor 10 can support the sliding member 42, which can ensure the reliability of the setting of the sliding member 42 in the rear door latch assembly 100. The latch 41 is disposed on the upper side of the rear floor 10. The latch 41 is connected to the sliding member 42, and the sliding member 42 is slidable in the limit chute 30. In this way, not only can the latch 41 be disposed on the rear floor 10 facing the lock body 200 to facilitate the cooperation between the lock body 200 and the latch 41, but also when the sliding member 42 slides, the latch 41 can follow the sliding member 42 to slide. Furthermore, it can facilitate the change of the position of the latch 41 on the rear floor 10, and can improve the adjustment convenience of the rear door latch assembly 100.

[0035] In this way, during the installation of the rear door latch assembly 100, the driving sliding member 42 can adjust the position of the latch 41 on the rear floor 10 according to the state of the lock body 200 on the rear door, so as to ensure the accurate locking cooperation between the lock body 200 and the latch 41 and ensure the reliability of the use of the vehicle rear door.

[0036] Combined with Figures 1-3 As shown, the rear door latch assembly 100 further includes a connecting member 50. A first avoidance hole 11 is provided on the rear floor 10. The connecting member 50 passes through the limit chute 30 and connects the latch 41 and the sliding member 42. The first avoidance hole 11 is adapted to avoid the sliding of the connecting member 50 following the sliding member 42. Specifically, the connecting member 50 can pass through the limit chute 30, so that the connecting member 50 can connect the latch 41 located on the upper side of the rear floor 10 and the sliding member 42 in the limit chute 30 located on the lower side of the rear floor 10, and connect the latch 41 and the sliding member 42 into one body. In this way, when the sliding member 42 slides in the limit chute 30, it can ensure that the latch 41 and the sliding member 42 slide synchronously, so as to realize the adjustable position of the latch 41 relative to the rear floor 10.

[0037] Further, the locking fastener 41 and the sliding member 42 are respectively arranged on the upper and lower sides of the rear floor 10. When the connecting member 50 passes through the limiting sliding groove 30, the connecting member 50 will pass through the rear floor 10. To ensure the smooth sliding of the connecting member 50, a first avoidance hole 11 is formed in the rear floor 10. This can not only enable the connecting member 50 to smoothly pass through the rear floor 10 to connect the locking fastener 41 and the sliding member 42 simultaneously, but also avoid the operation of the connecting member 50 sliding relative to the rear floor 10. In this way, the connecting member 50 can slide simultaneously with the sliding member 42 and the locking fastener 41, ensuring the smooth movement of the sliding member 42 in the limiting sliding groove 30, thereby improving the adjustment convenience of the rear door lock assembly 100.

[0038] Combined with Figures 1-3 As shown, the connecting member 50 is a fastener. A first through hole is provided on the locking fastener 41, and a second through hole 421 is provided on the sliding member 42. The first through hole and the second through hole 421 correspond to each other and are connected and fixed by the fastener. The diameter of the first avoidance hole 11 is larger than the diameter of the fastener.

[0039] Specifically, the connecting member 50 in the embodiment of the present invention includes, but is not limited to, a fastener. The fastener can lock and fix the locking fastener 41 and the sliding member 42, ensuring the connection reliability between the locking fastener 41 and the sliding member 42, and ensuring the structural reliability of the locking fastener 41 in the rear door lock assembly 100. In addition, the tightening force of the fastener can be adjusted, and the locking fastener 41 and the sliding member 42 can be selectively tightened and loosened.

[0040] Further, to facilitate the connection of the fastener to the locking fastener 41 and the sliding member 42, a first through hole is provided on the locking fastener 41 in the embodiment of the present invention to facilitate the fastener passing through the locking fastener 41, and a second through hole 421 is provided on the sliding member 42 to facilitate the fastener passing through the sliding member 42. The first through hole and the second through hole 421 correspond to each other in the up and down direction, which can facilitate the fastener passing through the first through hole and the second through hole 421, and is beneficial to improving the assembly convenience of the rear door lock assembly 100. In the embodiment of the present invention, the first through hole and the second through hole 421 include, but are not limited to, M8 threaded holes.

[0041] Furthermore, the diameter of the first avoidance hole 11 on the rear floor 10 is larger than the diameter of the fastener, that is, the diameter of the first avoidance hole 11 is larger than the radial dimension of the fastener. In this way, the first avoidance hole 11 can avoid the movement of the fastener relative to the rear floor 10. In the case where the fastener is connected to the sliding member 42, the sliding member 42 can slide in the limiting sliding groove 30, and thus the position of the locking fastener 41 relative to the rear floor 10 can be changed.

[0042] Combined with Figure 2 and Figure 3As shown, a second avoidance hole 21 is provided at the bottom of the limit plate 20. The fastener protrudes at least partially from the sliding member 42 and extends out of the second avoidance hole 21. The aperture of the second avoidance hole 21 is larger than the diameter of the fastener to avoid the sliding of the fastener. Specifically, when the connecting member 50 passes through the limit sliding groove 30 to connect the locking member 41 and the sliding member 42, to ensure the smooth movement of the sliding member 42, the bottom of the connecting member 50 can extend out of the limit plate 20, which can prevent the bottom of the connecting member 50 from being stressed and improve the sliding convenience of the sliding member 42.

[0043] Furthermore, the second avoidance hole 21 is opened at the bottom of the limit plate 20, which can facilitate the extension of the connecting member 50 from the bottom of the limit plate 20. The aperture of the second avoidance hole 21 is larger than the diameter of the connecting member 50, that is, the aperture of the second avoidance hole 21 is larger than the radial dimension of the connecting member 50. In this way, the second avoidance hole 21 can avoid the relative movement of the fastener with respect to the rear floor 10. In this case, when the fastener is connected to the sliding member 42, the sliding member 42 can slide in the limit sliding groove 30, so that the position of the locking member 41 relative to the rear floor 10 can be changed.

[0044] In the embodiment of the present utility model, the rear floor 10 is located in the vehicle trunk and includes a rear floor upper cross beam 12, a rear floor lower cross beam 13 and a lock mounting reinforcement plate 14. The second avoidance hole 21 is provided on the lock mounting reinforcement plate 14. The lock mounting reinforcement plate 14 is mainly used to bear the tightening force of the fastener, which can ensure the structural reliability of the locking member 41 on the rear floor 10. In the embodiment of the present utility model, the connection method between the limit plate 20 and the lower surface of the rear floor 10 includes but is not limited to spot welding, which can ensure the structural reliability of the limit plate 20 on the lower side of the rear floor 10.

[0045] According to the embodiment of the present utility model, the fastener has an adjustment position and a fixed position. The fastener can move up and down between the adjustment position and the fixed position. When the fastener is in the adjustment position, the rear floor 10 and the sliding member 42 are spaced apart in the up and down direction. Specifically, in the embodiment of the present utility model, the fastener passes through the first through hole and the second through hole 421 in the up and down direction, and the locking member 41 and the sliding member 42 are tightened and fixed by rotation to apply sufficient tightening force to the locking member 41, the rear floor 10 and the sliding member 42. Similarly, the fastener can be loosened by rotation to reduce or eliminate the tightening force received by the locking member 41, the rear floor 10 and the sliding member 42. The fastener can move up and down to move between the adjustment position and the fixed position.

[0046] Further, when the fastener is rotated to the adjustment position, the locking member, the rear floor 10, and the sliding member 42 are subjected to a relatively small or no tightening force in the up-and-down direction, and the rear floor 10 and the sliding member 42 are spaced apart in the up-and-down direction. This can reduce the frictional force on the sliding member 42 in the limit chute 30, facilitating the driving of the sliding member 42 to slide in the limit chute 30, thereby improving the ease of adjusting the position of the locking member 41.

[0047] Further, when the fastener is rotated to the fixed position, the fastener applies a tightening force to the locking member, the rear floor 10, and the sliding member 42, and the fastener drives the locking member 41 to press the rear floor 10 downward, so that the rear floor 10 and the sliding member 42 are at least partially in up-and-down contact. This can cause the rear floor 10 and the sliding member 42 to be pressed tightly, increasing the frictional force on the sliding member 42. Furthermore, the position of the sliding member 42 in the limit chute 30 can be fixed, ensuring the relative position of the locking member 41 with respect to the rear floor 10, facilitating the locking cooperation between the locking member 41 and the lock body 200.

[0048] Combined with Figure 3 As shown, when the fastener is in the adjustment position, the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction is L1, and L1 satisfies the relationship: 0.4 mm ≤ L1 ≤ 0.6 mm. Specifically, when the fastener is in the adjustment position, the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction is set to be not less than 0.4 mm. If the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction is set too small, then when the fastener is in the adjustment position, the frictional force on the sliding member 42 is large, making it difficult to drive the sliding member 42 and not facilitating the adjustment of the locking member 41.

[0049] Further, when the fastener is in the adjustment position, the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction is set to be not more than 0.6 mm. If the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction is set too large, then when the fastener is in the adjustment position, the frictional force on the sliding member 42 is too small, and it is easy to freely swing in the limit chute 30, which is not conducive to the accuracy of adjusting the position of the locking member 41.

[0050] Thus, when the fastener is in the adjustment position, setting the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction between 0.4 mm and 0.6 mm can not only prevent the sliding member 42 from freely swinging but also make it easier to drive the sliding member 42 to slide. In the embodiment of the present invention, when the fastener is in the adjustment position, the spacing distance between the rear floor 10 and the sliding member 42 in the up-and-down direction can be 0.5 mm, enabling the rear floor 10 and the sliding member 42 to be in zero contact in the up-and-down direction.

[0051] Combined with Figure 3And Figure 5 As shown, the sliding member 42 is spaced apart from the inner wall on at least one side in the left - right direction of the limiting sliding groove 30, and the sliding member 42 is spaced apart from the inner wall on at least one side in the front - rear direction of the limiting sliding groove 30. Specifically, when the sliding member 42 slides in the limiting sliding groove 30, the inner wall of the limiting sliding groove 30 can play a limiting role on the sliding member 42 to ensure that the sliding member 42 is always located in the limiting sliding groove 30.

[0052] Further, according to some embodiments of the present invention, the sliding member 42 is spaced apart from the inner wall on one side in the left - right direction of the limiting sliding groove 30, so that the sliding member 42 can slide left - right in the limiting sliding groove 30, and further the locking member 41 can move in the left - right direction to adjust the position of the locking member 41 relative to the rear floor 10 in the left - right direction.

[0053] According to other embodiments of the present invention, the sliding member 42 is spaced apart from the inner wall on at least one side in the left - right direction of the limiting sliding groove 30, so that the sliding member 42 can slide left - right in the limiting sliding groove 30, and further the locking member 41 can move in the left - right direction to adjust the position of the locking member 41 relative to the rear floor 10 in the left - right direction.

[0054] Further, according to some embodiments of the present invention, the sliding member 42 is spaced apart from the inner wall on one side in the front - rear direction of the limiting sliding groove 30, so that the sliding member 42 can slide back - forth in the limiting sliding groove 30, and further the locking member 41 can move in the front - rear direction to adjust the position of the locking member 41 relative to the rear floor 10 in the front - rear direction.

[0055] According to other embodiments of the present invention, the sliding member 42 is spaced apart from the inner wall on at least one side in the front - rear direction of the limiting sliding groove 30, so that the sliding member 42 can slide back - forth in the limiting sliding groove 30, and further the locking member 41 can move in the front - rear direction to adjust the position of the locking member 41 relative to the rear floor 10 in the front - rear direction.

[0056] Combined with Figure 5 As shown, the length of the limiting sliding groove 30 in the left - right direction is L2, and the length of the sliding member 42 in the left - right direction is L3. L2 and L3 satisfy the relationship: 8mm ≤ L2 - L3 ≤ 12mm. Specifically, setting the difference between the length of the limiting sliding groove 30 in the left - right direction and the length of the sliding member 42 in the left - right direction is not less than 8mm. If the difference between the length of the limiting sliding groove 30 in the left - right direction and the length of the sliding member 42 in the left - right direction is too small, the slidable range of the sliding member 42 in the left - right direction is too small, and it may not meet the adjustment requirements of the locking member 41 in the left - right direction.

[0057] Set the difference between the length of the limit chute 30 in the left-right direction and the length of the sliding member 42 in the left-right direction to not exceed 12 mm. If the difference between the length of the limit chute 30 in the left-right direction and the length of the sliding member 42 in the left-right direction is too large, it will cause the movable range of the sliding member 42 in the left-right direction to be too large, and further reduce the installation accuracy of the lock fastener 41 in the back door lock assembly 100.

[0058] In this way, setting the difference between the length of the limit chute 30 in the left-right direction and the length of the sliding member 42 in the left-right direction to be between 8 mm and 12 mm can not only meet the adjustment requirements of the lock fastener 41 in the left-right direction, but also ensure the assembly accuracy of the back door lock assembly 100.

[0059] Combined with Figure 5 As shown, the length of the limit chute 30 in the front-back direction is L4, and the length of the sliding member 42 in the front-back direction is L5. L4 and L5 satisfy the relationship: 8 mm ≤ L4 - L5 ≤ 12 mm. Specifically, set the difference between the length of the limit chute 30 in the front-back direction and the length of the sliding member 42 in the front-back direction to be not less than 8 mm. If the difference between the length of the limit chute 30 in the front-back direction and the length of the sliding member 42 in the front-back direction is too small, the slidable range of the sliding member 42 in the front-back direction will be too small, and it may not be able to meet the adjustment requirements of the lock fastener 41 in the front-back direction.

[0060] Set the difference between the length of the limit chute 30 in the front-back direction and the length of the sliding member 42 in the front-back direction to not exceed 12 mm. If the difference between the length of the limit chute 30 in the front-back direction and the length of the sliding member 42 in the front-back direction is too large, it will cause the movable range of the sliding member 42 in the front-back direction to be too large, and further reduce the installation accuracy of the lock fastener 41 in the back door lock assembly 100.

[0061] In this way, setting the difference between the length of the limit chute 30 in the front-back direction and the length of the sliding member 42 in the front-back direction to be between 8 mm and 12 mm can not only meet the adjustment requirements of the lock fastener 41 in the front-back direction, but also ensure the assembly accuracy of the back door lock assembly 100.

[0062] In the embodiment of the present utility model, left-right extending adjustment reference scale lines 60 are provided on both the left and right sides of the sliding member 42 and both the left and right sides of the lock fastener 41, which can improve the adjustment convenience of the front-back position of the lock fastener 41. Front-back extending adjustment reference scale lines 60 are provided on both the front and back sides of the sliding member 42 and on both the front and back sides of the lock mounting reinforcement plate 14 corresponding to the lock fastener 41, which can improve the adjustment convenience of the left-right position of the lock fastener 41.

[0063] According to an embodiment of the present utility model, a vehicle includes the back door latch assembly 100 in the embodiment of the present utility model. The back door latch assembly 100 of the present utility model is selectively moved up and down by arranging fasteners to press or relax a locking member, a rear floor 10, and a sliding block. When the fastener is in an adjusted position, the latch 41 can slide along the left-right direction and the front-rear direction together with the sliding member 42. In this way, the position of the latch 41 above the rear floor 10 can be easily changed, and the position of the latch 41 can be adjusted according to the lock body 200, so that the adjustment of the back door latch assembly 100 during the installation process can be facilitated. The back door latch assembly 100 of the present utility model has a delicate structure and is convenient to adjust, and can solve the problem that the latch cannot be adjusted during the installation of the back door in the prior art.

[0064] In an embodiment of the present utility model, each component in the back door latch assembly can be designed into a standardized structure to improve the part applicability and application range of the back door latch assembly, thereby facilitating the reduction of the vehicle development cost.

[0065] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0066] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A back door latch assembly, characterized in that, Comprising: Rear floor (10); Limiting plate (20), the limiting plate (20) is arranged on the lower side of the rear floor (10) and jointly forms a limiting chute (30) with the rear floor (10); Locking component (40), the locking component (40) includes a locking part (41) and a sliding part (42), the sliding part (42) is slidably arranged in the limiting chute (30), the locking part (41) is arranged on the upper side of the rear floor (10) and is connected to the sliding part (42), so that when the sliding part (42) slides, the locking part (41) follows the sliding part (42) to slide, and the locking part (41) is adapted to selectively lock and cooperate with a lock body (200) on the back door; Connecting piece (50), a first avoidance hole (11) is arranged on the rear floor (10), the connecting piece (50) passes through the limiting chute (30) and connects the locking part (41) and the sliding part (42), the first avoidance hole (11) is adapted to avoid the sliding of the connecting piece (50) following the sliding part (42), the connecting piece (50) is a fastener, a first through hole is arranged on the locking part (41), and a second through hole (421) is arranged on the sliding part (42), the first through hole and the second through hole (421) correspond to each other and are connected and fixed by the fastener.

2. The back door latch assembly according to claim 1, characterized in that, The aperture of the first avoidance hole (11) is larger than the diameter of the fastener.

3. The back door latch assembly according to claim 1, wherein A second avoidance hole (21) is arranged at the bottom of the limiting plate (20), at least part of the fastener protrudes from the sliding part (42) and extends out from the second avoidance hole (21), and the aperture of the second avoidance hole (21) is larger than the diameter of the fastener to avoid the sliding of the fastener.

4. The back door latch assembly according to claim 1, characterized in that, The fastener has an adjustment position and a fixed position, the fastener can move up and down between the adjustment position and the fixed position, when the fastener is in the adjustment position, the rear floor (10) and the sliding part (42) are spaced apart in the up and down direction; When the fastener is in the fixed position, the fastener selectively drives the locking part (41) to press the rear floor (10) downward, so that at least part of the rear floor (10) and the sliding part (42) are in up and down contact.

5. The back door latch assembly according to claim 4, characterized in that, When the fastener is in the adjustment position, the spacing distance L1 between the rear floor (10) and the sliding part (42) in the up and down direction satisfies the relationship: 0.4mm ≤ L1 ≤ 0.6mm.

6. The back door latch assembly according to claim 1, characterized in that, The sliding part (42) is spaced apart from the inner wall of at least one side in the left and right direction of the limiting chute (30), and the sliding part (42) is spaced apart from the inner wall of at least one side in the front and rear direction of the limiting chute (30).

7. The back door latch assembly according to claim 6, characterized in that, The length of the limiting chute (30) in the left and right direction is L2, and the length of the sliding part (42) in the left and right direction is L3, and L2 and L3 satisfy the relationship: 8mm ≤ L2 - L3 ≤ 12mm.

8. The back door latch assembly according to claim 6, characterized in that, The length of the limiting sliding groove (30) in the front-rear direction is L4, and the length of the sliding member (42) in the front-rear direction is L5. L4 and L5 satisfy the relational expression: 8 mm ≤ L4 - L5 ≤ 12 mm.

9. A vehicle, characterized in that, Comprising: The back door latch assembly (100) according to any one of claims 1-8.

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