Automobile rear seat backrest lock
By introducing a connection plate and a connection bracket into the rear seat back lock of the car, the problem that existing back locks cannot be universal between seats of different sizes is solved, and the versatility of the back lock and the convenience of operation are achieved.
Patent Information
- Application Number
- CN202422347766.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing car rear seat back locks cannot be versatile between rear seats of different sizes, resulting in the need of developing matching back locks for different models.
A car rear seat back lock is designed. By setting a connection plate and a connection bracket between the back lock body and the unlocking assembly, users can choose a suitable size connection plate and connection bracket to make the existing back lock suitable for rear seats of different sizes and use the lever principle to unlock.
The versatility of the backrest lock between the rear seats of different sizes is achieved, and matching backrest locks are avoided for the rear seats of different sizes, making it more labor-saving and convenient to operate.
Smart Images
Figure CN222959654U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle seats and relates to a backrest lock for the rear seats of vehicles. Background Art
[0002] Vehicle seats are generally divided into front seats and rear seats of vehicles. The inclination angle of the backrest of the front seats of vehicles can generally be adjusted, while the backrests of the rear seats are usually fixed and immovable. The fixed backrests to the vehicle body can no longer meet the usage requirements of people for the rear seats of vehicles. Currently, a small number of vehicle models adopt the installation of backrest locks on both sides of the seat backrest and the installation of U-shaped lock rings on the C-pillars on both sides of the seat backrest. The backrest lock can form a locking or unlocking fit with the U-shaped lock ring, so that the backrest of the rear seat can be unfolded or folded. However, since the sizes of the rear seats of different vehicle models are different, the sizes of the backrest locks matched with the rear seats of different vehicle models are also different, so that the possibility of alternative use of the existing backrest locks between rear seats of different sizes is very small. Summary of the Invention
[0003] The purpose of the utility model is to provide a backrest lock for the rear seats of vehicles in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is how to achieve the universality of the backrest lock between rear seats of different sizes.
[0004] The purpose of the utility model can be achieved by the following technical solutions:
[0005] A backrest lock for the rear seats of vehicles, comprising a backrest lock body and an unlocking assembly. It is characterized in that an unlocking bracket for unlocking and arranged vertically is connected to the backrest lock body, a pull rod arranged vertically is connected to the unlocking assembly, a connecting plate is hinged to the lower end of the pull rod, the upper end of the unlocking bracket is hinged to the connecting plate, a connecting bracket is fixedly connected to the backrest lock body vertically, and the upper end of the connecting bracket is hinged to the middle of the connecting plate. The lower end of the pull rod and the upper end of the unlocking bracket are respectively hinged to both ends of the connecting plate.
[0006] In this car rear seat backrest lock, a connecting plate and a connecting bracket are provided between the backrest lock body and the unlocking component. Users only need to select connecting plates and connecting brackets of appropriate sizes to make the existing backrest lock body and unlocking component applicable to rear seats of different sizes, without having to develop matching backrest locks for different-sized rear seats one by one. Thus, the universality of the existing backrest lock among rear seats of different sizes is achieved. At the same time, both ends of the connecting plate are respectively hinged to the pull rod and the unlocking bracket, and the connecting bracket is fixedly connected to the backrest lock body and hinged to the middle of the connecting plate, enabling this car rear seat backrest lock to achieve unlocking using the lever principle. The hinge point between the connecting plate and the connecting bracket fixedly connected to the backrest lock body becomes the fulcrum (i.e., the fulcrum of the lever) for the up-and-down swing of the connecting plate. When the user drives the pull rod to move downward through the unlocking component, this end of the connecting plate hinged to the pull rod swings downward, while this end of the connecting plate hinged to the unlocking bracket swings upward, thereby driving the unlocking bracket to unlock the backrest lock body, making the operation more labor-saving and convenient.
[0007] In the above-mentioned car rear seat backrest lock, the hinge points of the pull rod, the connecting bracket, and the unlocking bracket with the connecting plate are located on the same straight line. By setting the hinge points of the pull rod, the connecting bracket, and the unlocking bracket with the connecting plate on the same straight line, the multiple of the lever arm is kept constant, making the transmission among the pull rod, the connecting plate, and the unlocking bracket more accurate and stable.
[0008] In the above-mentioned car rear seat backrest lock, the pull rod, the connecting bracket, and the unlocking bracket are respectively arranged in a bent shape, and the connecting plate is arranged in a flat plate shape. By arranging the pull rod, the connecting bracket, and the unlocking bracket in a bent shape and the connecting plate in a flat plate shape, the pull rod can better connect the unlocking component and the connecting plate, the connecting bracket fixed on the backrest lock body can better connect the connecting plate, the unlocking bracket can better connect the backrest lock body and the connecting plate, and it can better ensure that the hinge points of the pull rod, the connecting bracket, and the unlocking bracket with the connecting plate are located on the same straight line.
[0009] In the above-mentioned car rear seat backrest lock, the unlocking component includes a mounting seat and an unlocking handle that is rotatably arranged up and down on the mounting seat, and the upper end of the pull rod is connected to the bottom of the unlocking handle. The mounting seat facilitates fixing the unlocking component on the backrest frame. Users can drive the pull rod to move downward or reset through the unlocking handle. The unlocking handle can be rotatably connected to the mounting shell through a hinge shaft, and a torsion spring for resetting the unlocking handle can be sleeved on the hinge shaft to facilitate the reset of the unlocking handle after rotation.
[0010] In the above-mentioned rear seat backrest lock for an automobile, the backrest lock body includes a housing, a main locking plate and a secondary locking plate that are swingably arranged on the housing. The lower end of the unlocking bracket is connected to the secondary locking plate to drive it to swing. The main locking plate and the secondary locking plate are linked together. A relief notch is formed in the housing, and a locking notch is formed in the main locking plate, and the opening direction of the locking notch is the same as or perpendicular to the opening direction of the relief notch. The backrest lock body with the above structure is simple in structure, and the locking and unlocking operations are convenient.
[0011] Compared with the prior art, the advantages of the rear seat backrest lock for this automobile are as follows: A connecting plate and a connecting bracket are provided between the backrest lock body and the unlocking assembly of the rear seat backrest lock for this automobile. At the same time, both ends of the connecting plate are respectively hinged to the pull rod and the unlocking bracket, and the connecting bracket is fixedly connected to the backrest lock body and hinged to the middle of the connecting plate. On the one hand, by simply selecting connecting plates and connecting brackets with appropriate sizes, the existing backrest lock body and unlocking assembly can be made suitable for rear seats of different sizes, realizing the universality of the backrest lock among rear seats of different sizes. On the other hand, the rear seat backrest lock for this automobile can utilize the lever principle to achieve unlocking, making the operation more labor-saving and convenient. Brief Description of the Drawings
[0012] Figure 1 is a three-dimensional structural schematic diagram of the rear seat backrest lock for this automobile when in use.
[0013] Figure 2 is a side view structural schematic diagram of the rear seat backrest lock for this automobile when in use.
[0014] Figure 3 is Figure 2 a structural schematic diagram of the rear seat backrest lock for this automobile with a part of the fixed housing removed.
[0015] Figure 4 is a three-dimensional structural schematic diagram of the rear seat backrest lock for this automobile with the installation housing removed.
[0016] Figure 5 is a three-dimensional structural schematic diagram of the unlocking handle, unlocking bracket, pull rod, connecting plate and connecting bracket of the rear seat backrest lock for this automobile.
[0017] In the figures, 1. Backrest lock body; 1a. Fixed housing; 1a1. Relief notch; 1b. Main locking plate; 1b1. Locking notch; 1c. Secondary locking plate; 2. Unlocking assembly; 2a. Installation housing; 2b. Unlocking handle; 3. Unlocking bracket; 4. Pull rod; 5. Connecting plate; 6. Connecting bracket; 7. Backrest frame. Detailed Description of the Embodiment
[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0019] A rear seat back lock for a car, referring to Figures 1-5 , including a backrest lock body 1 and an unlocking assembly 2, the backrest lock body 1 is connected with an unlocking bracket 3 for unlocking and arranged vertically, the unlocking assembly 2 is connected with a pull rod 4 arranged vertically, the lower end of the pull rod 4 is hinged with a connecting plate 5 arranged horizontally, the upper end of the unlocking bracket 3 is hinged on the connecting plate 5, the backrest lock body 1 is vertically fixedly connected with a connecting bracket 6, and the upper end of the connecting bracket 6 is hinged to the middle part of the connecting plate 5, the lower end of the pull rod 4 and the upper end of the unlocking bracket 3 are respectively hinged to the two ends of the connecting plate 5.
[0020] Specifically, refer to Figures 1-5 The pull rod 4, the connecting bracket 6 and the unlocking bracket 3 are respectively arranged in a bent shape, and the connecting plate 5 is arranged in a flat plate shape; the hinge points of the pull rod 4, the connecting bracket 6 and the unlocking bracket 3 and the connecting plate 5 are located on the same straight line.
[0021] More specifically, refer to Figures 1-5 The unlocking assembly 2 includes a mounting shell 2a and an unlocking handle 2b rotatably arranged on the mounting shell 2a. The unlocking handle 2b can be rotatably connected to the mounting shell 2a through a hinge shaft. At the same time, a torsion spring for resetting the unlocking handle 2b can be sleeved on the hinge shaft to facilitate the resetting of the unlocking handle 2b after rotation. The upper end of the pull rod 4 is connected to the bottom of the unlocking handle 2b; the backrest lock body 1 includes a fixed shell 1a and a main locking plate 1b and a secondary locking plate 1b rotatably arranged on the fixed shell 1a. The locking plate 1c, the lower end of the unlocking bracket 3 is connected to the auxiliary locking plate 1c to drive it to swing, the main locking plate 1b and the auxiliary locking plate 1c are linked, and a compression spring can be arranged between the main locking plate 1b and the auxiliary locking plate 1c to better realize the linkage between the two, a clearance notch 1a1 is provided on the fixed shell 1a, and a locking notch 1b1 is provided on the main locking plate 1b, and the opening direction of the locking notch 1b1 is consistent with or perpendicular to the opening direction of the clearance notch 1a1.
[0022] The following explains the working principle of the rear seat back lock of this car:
[0023] When the rear seat backrest needs to be folded, the user applies force to the unlocking handle 2b on the mounting shell 2a to make the unlocking handle 2b rotate downward relative to the mounting shell 2a, and the unlocking handle 2b drives the pull rod 4 to move downward while rotating, and then the pull rod 4 drives the connecting plate 5 and its hinged end (around the hinge point of the connecting plate 5 and the connecting bracket 6) to swing downward. Because the connecting bracket 6 is fixedly connected to the fixed shell 1a of the backrest lock body 1, the hinge point of the connecting plate 5 and the connecting bracket 6 becomes the fulcrum for the up and down swinging of the connecting plate 5 (that is, the support of the lever Correspondingly, the end of the connecting plate 5 hinged to the unlocking bracket 3 (around the hinge point of the connecting plate 5 and the connecting bracket 6) swings upward, and then the unlocking bracket 3 drives the auxiliary locking plate 1c to swing, and then the auxiliary locking plate 1c drives the main locking plate 1b to swing and makes the opening direction of the locking notch 1b1 on the main locking plate 1b consistent with the opening direction of the yield notch 1a1 on the fixed shell 1a, so that the U-shaped locking buckle ring on the C-pillar of the automobile can be separated from the locking notch 1b1 and the yield notch 1a1 to achieve unlocking, and at this time the backrest of the rear seat can be folded.
[0024] When the rear seat backrest needs to be unfolded, the user only needs to operate the rear seat backrest to reset. When the backrest lock body 1 on the rear seat backrest frame 7 contacts the U-shaped locking buckle ring on the C-pillar of the vehicle on the same side, the U-shaped locking buckle ring can be inserted into the clearance notch 1a1 of the fixed shell 1a and the locking notch 1b1 of the main locking plate 1b. The U-shaped locking buckle ring can drive the main locking plate 1b to swing during the collision with the locking notch 1b1, and make the opening direction of the locking notch 1b1 on the main locking plate 1b perpendicular to the opening direction of the clearance notch 1a1 on the fixed shell 1a. At this time, the main locking plate 1b, the auxiliary locking plate 1c linked with the main locking plate 1b and the fixed shell 1a form a self-limiting structure, so that the U-shaped locking buckle ring cannot be separated from the locking notch 1b1, so that the backrest lock body 1 is locked on the U-shaped locking buckle ring, so that the unfolded rear seat backrest is locked to facilitate the user to sit.
[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A rear seat backrest lock for a car, comprising a backrest lock body (1) and an unlocking assembly (2), characterized in that: The backrest lock body (1) is connected to an unlocking bracket (3) for unlocking and arranged vertically, the unlocking assembly (2) is connected to a pull rod (4) arranged vertically, the lower end of the pull rod (4) is hinged to a connecting plate (5) arranged horizontally, the upper end of the unlocking bracket (3) is hinged to the connecting plate (5), the backrest lock body (1) is vertically fixedly connected to a connecting bracket (6), and the upper end of the connecting bracket (6) is hinged to the middle part of the connecting plate (5), the lower end of the pull rod (4) and the upper end of the unlocking bracket (3) are respectively hinged to the two ends of the connecting plate (5).
2. The rear seat backrest lock of a car according to claim 1, characterized in that: The hinge points of the pull rod (4), the connecting bracket (6) and the unlocking bracket (3) and the connecting plate (5) are located on the same straight line.
3. The rear seat backrest lock of a car according to claim 2, characterized in that: The pull rod (4), the connecting bracket (6) and the unlocking bracket (3) are respectively arranged in a bent shape, and the connecting plate (5) is arranged in a flat plate shape.
4. A rear seat backrest lock for an automobile according to claim 1, 2 or 3, characterized in that: The unlocking assembly (2) comprises a mounting shell (2a) and an unlocking handle (2b) which is arranged on the mounting shell (2a) and can be rotated up and down. The upper end of the pull rod (4) is connected to the bottom of the unlocking handle (2b).
5. A rear seat backrest lock for an automobile according to claim 1, 2 or 3, characterized in that: The backrest lock body (1) comprises a fixed shell (1a) and a main locking plate (1b) and a secondary locking plate (1c) swingably arranged on the fixed shell (1a); the lower end of the unlocking bracket (3) is connected to the secondary locking plate (1c) to drive it to swing; the main locking plate (1b) and the secondary locking plate (1c) are arranged in linkage; a clearance notch (1a1) is provided on the fixed shell (1a); a locking notch (1b1) is provided on the main locking plate (1b); and the opening direction of the locking notch (1b1) is consistent with or perpendicular to the opening direction of the clearance notch (1a1).