Electric latch hook for stepless adjustment of back row seat backrest

Abstract

The utility model provides an electric latch hook for stepless adjustment of a back row seat backrest, which comprises a mounting bracket, and the mounting bracket is provided with an arc-shaped strip-shaped hole structure; the guide assembly is connected to the arc-shaped strip-shaped hole structure in a sliding mode, and a lock hook connected with a back row backrest of an automobile seat is arranged on the guide assembly; and the driving assembly is installed on the installation support, the driving assembly is connected with the guiding assembly, the driving assembly is used for driving the guiding assembly to slide on the arc-shaped strip-shaped hole structure, and meanwhile the driving assembly conducts appropriate swing according to the sliding track of the guiding assembly. The utility model solves the problems that the electric latch hook of the existing product is unsmooth in movement, the lead screw is adjusted to be straight, the movement impact between the electric adjusting mechanism and the backrest is easily caused, the requirement on the arrangement space is large, the arrangement of the whole vehicle is difficult, and the installation and use difficulty of the electric latch hook by workers is increased.

Description

Technical Field

[0001] This application belongs to the field of automotive seat accessories technology, and more specifically, relates to an electric locking hook for stepless adjustment of rear seat backrests. Background Technology

[0002] The electrically adjustable rear seat backrest angle locking hook is a functional component designed on the rear seats of a vehicle. It allows users to electrically adjust the seat backrest angle steplessly, and the locking mechanism ensures stability after adjustment. Electrically adjustable rear seat backrest angle locking hooks are commonly used in the rear seats of automobiles to meet passengers' higher demands for ride comfort. They are also widely used in some commercial vehicles and MPVs. The electrically adjustable rear seat backrest angle locking hook is an advanced design that combines convenience, comfort, and stability, providing passengers with a superior riding experience.

[0003] However, traditional electric locking hooks have the following drawbacks:

[0004] The existing electric locking hooks do not move smoothly, and the lead screw adjustment moves in a straight line, which can easily cause surging and impact between the electric adjustment mechanism and the backrest. In addition, the space required for installation is large, which makes the overall vehicle layout difficult and increases the difficulty for staff to install and use the electric locking hooks. Therefore, a motion mechanism for stepless adjustment of the rear seat backrest angle is proposed. Summary of the Invention

[0005] The purpose of this application is to provide an electric locking hook for stepless adjustment of the rear seat backrest. It solves the problems of uneven movement of the electric locking hook in existing products, linear adjustment of the lead screw, easy to cause surging impact between the electric adjustment mechanism and the backrest, large space requirements for installation, difficulty in vehicle layout, and increased difficulty for staff to install and use the electric locking hook.

[0006] To achieve the above objectives, the technical solution adopted in this application is: an electric locking hook for stepless adjustment of the rear seat backrest, comprising:

[0007] The mounting bracket is provided with an arc-shaped strip hole structure;

[0008] A guide assembly, which is slidably connected to the arc-shaped strip hole structure, and is provided with a locking hook for connecting to the back of the car seat.

[0009] A drive assembly is mounted on the mounting bracket and connected to the guide assembly. The drive assembly is used to drive the guide assembly to slide on the arc-shaped strip hole structure, and at the same time, the drive assembly swings appropriately according to the sliding trajectory of the guide assembly.

[0010] Preferably, the driving component includes:

[0011] The motor bracket is rotatably connected to the mounting bracket;

[0012] A servo motor is fixedly connected to the motor bracket;

[0013] A lead screw is connected to the servo motor, and the lead screw is threadedly connected to the guide assembly.

[0014] Preferably, the motor bracket includes:

[0015] The motor connection plate consists of two symmetrically arranged vertical connection plates, which are fixedly connected to both sides of the mounting bracket connection plate. Both connection plates are symmetrically provided with connection holes. The servo motor is fixedly connected to the motor connection plate by long bolts.

[0016] The mounting bracket connecting plate is provided with through holes;

[0017] A stepped bolt passes through the through hole and is connected to the mounting bracket. The mounting bracket connecting plate is rotatably connected to the mounting bracket via the stepped bolt.

[0018] Preferably, the mounting bracket connecting plate is provided with a lifting part, which abuts against the servo motor.

[0019] Preferably, the guide component includes:

[0020] A transmission nut is connected to the lead screw, and the transmission nut is provided with a locking hook for connecting to the back of the car seat.

[0021] A guide shaft is connected to the transmission nut, and one end of the guide shaft passes through the arc-shaped strip hole structure.

[0022] Preferably, a plastic nut is embedded in the transmission nut.

[0023] Preferably, the guide shaft is provided with a stepped portion, which passes through the arc-shaped strip hole structure and is connected to the flange nut.

[0024] Preferably, a sliding sleeve is embedded in the arc-shaped strip hole structure, and the stepped portion passes through the sliding sleeve and is connected to the flange nut.

[0025] Preferably, the mounting bracket has a vehicle body connection portion for mounting the mounting bracket to the vehicle body.

[0026] Preferably, it further includes a support bracket, which has a load-bearing part and a connecting part, the load-bearing part being connected to the mounting bracket and the connecting part being connected to the vehicle body.

[0027] The beneficial effects of the electric locking hook for stepless adjustment of rear seat backrest provided in this application are as follows:

[0028] 1. Driven by a servo motor, the guide component moves in a curved motion within the arc-shaped slot structure of the mounting bracket. This motion curve matches the motion curve of the seat back flipping, ensuring that the locking hook of the mechanism is always synchronized with the locking buckle on the seat back, thereby effectively reducing noise during the adjustment process and ensuring smooth adjustment.

[0029] 2. The guide shaft below the transmission nut is provided with a stepped section to prevent the flange nut from locking the guide assembly after tightening, thereby preventing the locking hook from getting stuck.

[0030] 3. After the step bolts lock the motor bracket, the motor bracket can still rotate around the step bolts to ensure that the motor screw can swing accordingly when the locking hook moves in the curved slide, thereby realizing stepless adjustment of the entire mechanism. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A three-dimensional structural diagram of a magnetic base drill for an electric locking hook for stepless adjustment of the rear seat back, provided in an embodiment of this application. Figure 1 ;

[0033] Figure 2 A three-dimensional structural diagram of an electric locking hook for stepless adjustment of the rear seat backrest provided in this application embodiment. Figure 2 ;

[0034] Figure 3 A schematic diagram of the structure of a mounting bracket for an electric lock hook for stepless adjustment of the rear seat back, provided in an embodiment of this application;

[0035] Figure 4 A schematic diagram of the structure of a guide assembly for an electric locking hook for stepless adjustment of the rear seat back, provided in an embodiment of this application;

[0036] Figure 5 A schematic diagram of the structure of a motor bracket for an electric locking hook for stepless adjustment of the rear seat back, provided in an embodiment of this application;

[0037] Figure 6 A schematic diagram of the structure of a support bracket for an electric locking hook for stepless adjustment of the rear seat back, provided in an embodiment of this application;

[0038] Figure 7 A schematic diagram of the structure of a sliding sleeve for an electric locking hook for stepless adjustment of the rear seat back, provided for an embodiment of this application;

[0039] Figure 8 This is a schematic diagram of the stepped bolt of an electric locking hook for stepless adjustment of the rear seat back, provided as an embodiment of this application.

[0040] The following are the labeling elements in the figure:

[0041] 1. Mounting bracket; 101. Body connection part; 102. Guide component connection part; 103. Drive component connection part; 104. Arc-shaped strip hole structure;

[0042] 2. Guide assembly; 201. Locking hook; 202. Transmission nut; 203. Guide shaft; 204. Plastic nut; 205. Flange nut; 206. Sliding sleeve;

[0043] 3. Drive components; 301. Servo motor; 302. Lead screw;

[0044] 4. Motor bracket; 401. Motor connecting plate; 402. Mounting bracket connecting plate; 403. Bushing; 404. Support part; 405. Long bolt; 406. Step bolt;

[0045] 5. Lifting bracket; 501. Load-bearing part; 502. Connecting part. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0047] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0048] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] Please refer to the following: Figures 1 to 4 The present application will now describe an electric locking hook for stepless adjustment of the rear seat backrest provided in an embodiment of the present application.

[0051] The motion mechanism for stepless adjustment of the rear seat backrest includes: mounting bracket 1, guide assembly 2, and drive assembly 3.

[0052] Specifically, the mounting bracket 1 has a body connecting part 101, a guide component connecting part 102, and a drive component connecting part 103. The body connecting part 101 is used to mount the mounting bracket 1 to the vehicle body. The guide component connecting part 102 of the mounting bracket 1 is provided with an arc-shaped strip hole structure 104. The guide component 2 is slidably connected to the arc-shaped strip hole structure 104, and the guide component 2 is provided with a locking hook 201 for connecting to the rear seat back of the car seat. The drive component 3 is mounted on the drive component connecting part 103 of the mounting bracket 1, and the drive component 3 is connected to the guide component 2. The drive component 3 is used to drive the guide component 2 to slide on the arc-shaped strip hole structure 104, and at the same time, the drive component 3 swings appropriately according to the sliding trajectory of the guide component 2.

[0053] Existing seat back adjustment devices mostly use linear trajectory adjustment devices, which requires further enlargement of the clearance groove in the car interior, seriously affecting the aesthetics of the car interior. Furthermore, the linear adjustment of the lead screw 302 easily causes surging impact between the electric adjustment mechanism and the backrest, and the large space requirement makes overall vehicle layout difficult. The difference between this application and the prior art is that the guide component 2 is slidably connected to the arc-shaped strip hole structure 104, and the guide component 2 is provided with a locking hook 201 for connecting to the rear seat backrest; the drive component 3 is mounted on the drive component connection part 103 on the mounting bracket 1, and the drive component 3 is connected to the guide component 2. The drive component 3 is used to drive the guide component 2 to slide on the arc-shaped strip hole structure 104, and simultaneously the drive component 3 swings appropriately according to the sliding trajectory of the guide component 2. It can fit the arc trajectory of the car seat backrest movement, which can reduce the size of the clearance groove, reduce the impact on the car interior, and avoid the impact of the ball screw 302 adjusting in a straight line, which can easily cause surging impact between the electric adjustment mechanism and the backrest, and the large space required for the layout, making the overall vehicle layout difficult.

[0054] In a preferred embodiment of this utility model, the drive assembly 3 includes: a motor bracket 4, which is rotatably connected to the mounting bracket 1. The motor bracket 4 includes: a motor connecting plate 401, which includes two symmetrically vertically arranged connecting plates. The two connecting plates are fixedly connected to both sides of the mounting bracket connecting plate 402, and both connecting plates are symmetrically provided with connecting holes. The servo motor 301 base has a servo motor 301 base connecting part 502 connected to the two connecting plates and a mounting hole. A long bolt 405 passes through the connecting hole and the mounting hole and is threadedly connected to a nut to fix the servo motor 301 to the motor connecting plate 401. The connecting plate 402 is provided with a through hole, and a bushing 403 is embedded in the through hole to provide sufficient wear resistance; a stepped bolt 406 passes through the through hole and is threadedly connected to the threaded hole of the mounting bracket 1. The mounting bracket connecting plate 402 is rotatably connected to the mounting bracket 1 by the stepped bolt 406. The stepped bolt 406 can prevent the mounting bracket connecting plate 402 from being completely fixed to the mounting bracket 1; a servo motor 301 is fixedly connected to the motor bracket 4; a lead screw 302 is connected to the servo motor 301 and is threadedly connected to the guide assembly 2.

[0055] In some preferred embodiments of this utility model, the mounting bracket connecting plate 402 is provided with a lifting part 404, which abuts against the servo motor 301. The lifting part 404 can reduce the pressure on the motor connecting plate 401 and also ensure that the lead screw 302 is located on the same horizontal plane.

[0056] In some preferred embodiments of this utility model, the guide assembly 2 includes: a transmission nut 202 connected to the lead screw 302, the transmission nut 202 being provided with a locking hook 201 for connecting to the rear seat back of a car seat; and a guide shaft 203 connected to the transmission nut 202, the other end of the guide shaft 203 passing through the arc-shaped strip hole structure 104, and the end of the guide shaft 203 away from the transmission nut 202 being provided with a threaded structure.

[0057] In some preferred embodiments of this utility model, the transmission nut 202 has a through hole, and a plastic nut 204 is embedded in the through hole of the transmission nut 202. Using a plastic nut 204 can effectively reduce the noise generated by the mechanism during operation.

[0058] In some preferred embodiments of this invention, the guide shaft 203 is provided with a stepped portion, which passes through the arc-shaped slot structure 104 and connects to the flange nut 205. This ensures a certain degree of freedom when locked, allowing the guide assembly 2 to slide freely within the arc-shaped slot structure 104 under the drive of the servo motor 301. A sliding sleeve 206 is embedded in the arc-shaped slot structure 104, and the stepped portion passes through the sliding sleeve 206 and connects to the flange nut 205. The sliding sleeve 206 is made using a plastic coating process to reduce friction between the guide assembly and the arc-shaped slot structure 104.

[0059] In some preferred embodiments of this utility model, the motion mechanism for stepless adjustment of the rear seat backrest further includes a support bracket 5. The support bracket 5 has a load-bearing part 501 and a connecting part 502. The load-bearing part 501 is connected to the mounting bracket 1, and the connecting part 502 is connected to the vehicle body. This can further reduce the pressure on the vehicle body connecting part 101 on the mounting bracket 1 and balance the force on the entire mounting bracket 1, making the mechanism more stable during use.

[0060] Principle: Driven by the servo motor 301, the guide component 2 moves in a curved motion within the arc-shaped slot structure 104 of the mounting bracket 1. This motion curve matches the motion curve of the seat back flipping, ensuring that the locking hook 201 of the mechanism is always synchronized with the locking buckle on the seat back, thereby effectively reducing noise during the adjustment process and ensuring smooth adjustment. The guide shaft 203 below the transmission nut 202 is provided with a stepped portion to prevent the flange nut 205 from locking the guide component 2 after tightening, thus preventing the locking hook 201 from getting stuck. After the stepped bolt 406 locks the motor bracket 4, the motor bracket 4 can still rotate around the stepped bolt 406, ensuring that the motor lead screw 302 can swing accordingly when the locking hook 201 moves in the curved slide, thereby achieving stepless adjustment of the entire mechanism.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electric locking hook for stepless adjustment of rear seat backrests, characterized in that, include: The mounting bracket is provided with an arc-shaped strip hole structure; A guide assembly, which is slidably connected to the arc-shaped strip hole structure, and is provided with a locking hook for connecting to the back of the car seat. A drive assembly is mounted on the mounting bracket and connected to the guide assembly. The drive assembly is used to drive the guide assembly to slide on the arc-shaped strip hole structure, and at the same time, the drive assembly swings appropriately according to the sliding trajectory of the guide assembly.

2. The electric locking hook for stepless adjustment of rear seat backrests as described in claim 1, characterized in that, The driving component includes: The motor bracket is rotatably connected to the mounting bracket; A servo motor is fixedly connected to the motor bracket; A lead screw is connected to the servo motor, and the lead screw is threadedly connected to the guide assembly.

3. The electric locking hook for stepless adjustment of rear seat backrests as described in claim 2, characterized in that, The motor bracket includes: The motor connection plate consists of two symmetrically arranged vertical connection plates, which are fixedly connected to both sides of the mounting bracket connection plate. Both connection plates are symmetrically provided with connection holes. The servo motor is fixedly connected to the motor connection plate by long bolts. The mounting bracket connecting plate is provided with through holes; A stepped bolt passes through the through hole and is connected to the mounting bracket. The mounting bracket connecting plate is rotatably connected to the mounting bracket via the stepped bolt.

4. The electric locking hook for stepless adjustment of rear seat backrests as described in claim 3, characterized in that: The mounting bracket connecting plate is provided with a lifting part, which abuts against the servo motor.

5. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 2 or 4, characterized in that, The guide assembly includes: a transmission nut connected to the lead screw, and the transmission nut is provided with a locking hook for connecting to the rear seat back of the car seat; A guide shaft is connected to the transmission nut, and one end of the guide shaft passes through the arc-shaped strip hole structure.

6. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 5, characterized in that, A plastic nut is embedded in the transmission nut.

7. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 6, characterized in that: The guide shaft is provided with a stepped portion, which passes through the arc-shaped strip hole structure and is connected to the flange nut.

8. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 7, characterized in that: A sliding sleeve is embedded in the arc-shaped strip hole structure, and the stepped portion passes through the sliding sleeve and connects to the flange nut.

9. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 8, characterized in that: The mounting bracket has a body connection portion, which is used to mount the mounting bracket to the vehicle body.

10. An electric locking hook for stepless adjustment of rear seat backrests as described in claim 9, characterized in that, It also includes a lifting bracket, which has a load-bearing part and a connecting part, the load-bearing part being connected to the mounting bracket and the connecting part being connected to the vehicle body.

Images