An adjustable car seat back support

Abstract

This utility model discloses an adjustable car seat back bracket, relating to the field of seat back bracket technology. It includes a mounting base with a slot at the top of a mounting frame. A movable frame mounted on the mounting base is engaged in the slot via a top latch. A positioning assembly is located at the bottom of the movable frame. A positioning rod on a pull plate of the positioning assembly slides through the bottom of the movable frame. A limit plate is provided on the positioning rod, which is connected to the inner wall of the movable frame via a spring. The top of the positioning rod corresponds to and is fitted with positioning holes arrayed at the bottom of the mounting base. A first extension arm is hinged to a first rotating frame mounted on the back of the movable frame. The first extension arm is hinged to a second extension arm, which in turn is hinged to a second rotating frame on which an equipment bracket is mounted. This utility model achieves lateral movement adjustment by allowing the movable frame to slide left and right along the mounting base. The connection between the positioning rod and the positioning holes resists vibrations such as bumps and rapid acceleration during vehicle operation, thus achieving positional fixation.

Description

Technical Field

[0001] This utility model relates to the field of seat back support technology, specifically an adjustable car seat back support. Background Technology

[0002] As the automotive consumer market continues to demand higher levels of comfort and functionality in the driving experience, and with the increasing popularity of portable electronic devices, rear-seat passengers are increasingly using electronic devices for entertainment, work, and study during their journeys. At the same time, with the rise of in-vehicle recording and sharing needs, video recording scenarios such as driver's and passenger's perspectives are becoming more and more common, and users' demand for recording scenes such as "steering wheel operation, scenery along the way, and in-vehicle interaction" during their travels continues to grow.

[0003] Existing car seat electronic device brackets are tied to lateral movement and other adjustments (such as angle and height). Adjusting the left and right position will cause the angle to shift, requiring repeated calibration. The lateral position cannot be adjusted accurately on its own, forcing users to repeatedly correct the lateral, angle, and height adjustments. The whole process is time-consuming and laborious, requiring multiple operations to barely achieve the ideal state. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable car seat back bracket, which solves the problem mentioned in the background technology that adjusting the left and right positions causes angular displacement, requiring repeated corrections between the horizontal, angular, and height settings during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable car seat back bracket, comprising a mounting base, wherein the mounting base includes a mounting frame, the top of the mounting frame has a slot, the bottom of the mounting frame has a series of positioning holes, a movable frame is mounted on the mounting frame, the movable frame is engaged in the slot by a top protrusion, a positioning component is provided at the bottom of the movable frame, the positioning component includes a pull plate, a positioning rod slides through the bottom of the movable frame on the pull plate, a limit plate is provided on the positioning rod, the limit plate is connected to the inner wall of the movable frame by a spring, the top of the positioning rod is correspondingly adapted to the positioning hole, a first rotating frame is mounted on the back of the movable frame, a first extension arm is hinged to the first rotating frame, the first extension arm is hinged to a second extension arm, the second extension arm is hinged to a second rotating frame, and an equipment bracket is mounted on the second rotating frame.

[0006] Preferably, fastening knobs are provided at the connection points between the first rotating frame and the first extending arm, the first extending arm and the second extending arm, and the second extending arm and the second rotating frame.

[0007] Preferably, the mounting bracket is fixed to one side of the mounting plate, and a snap-fit ​​rod is fixedly provided on the back side of the mounting plate. The snap-fit ​​rod has a limiting groove that matches the headrest insert rod, and a fastening nut is screwed onto the snap-fit ​​rod.

[0008] Preferably, the first extension arm and the second extension arm are arranged alternately vertically.

[0009] Preferably, the shape of the card protrusion is adapted to the card slot, and the card protrusion can slide along the length direction of the card slot.

[0010] Preferably, the spring is sleeved on the outside of the positioning rod, and the two ends of the spring abut against the inner walls of the limiting plate and the movable frame, respectively.

[0011] This utility model provides an adjustable car seat back support. It has the following advantages: (1) This utility model achieves lateral movement adjustment by sliding the movable frame left and right along the mounting frame, and uses the connection between the positioning rod and the positioning hole to resist the vibration of the vehicle during driving, such as bumps and rapid acceleration, and to fix the position.

[0012] (2) The present invention uses the first extension arm and the second extension arm to be staggered vertically to avoid mutual obstruction and interference between the two during the extension or folding process, thereby expanding the range of motion of the equipment bracket and allowing it to be flexibly adjusted to a position close to the passenger's line of sight or the shooting target when used for shooting and recording video. Attached Figure Description

[0013] Figure 1 This is a diagram showing the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This utility model Figure 2 Structural diagram of the mounting bracket; Figure 4 This utility model Figure 2 Diagram showing the structure of the positioning component.

[0014] In the diagram, 1. Mounting base; 11. Mounting bracket; 12. Positioning hole; 13. Slot; 14. Connecting rod; 141. Limiting slot; 15. Fastening nut; 16. Mounting plate; 2. Moving frame; 21. Snap protrusion; 3. First rotating frame; 4. First extension arm; 5. Second extension arm; 6. Second rotating frame; 7. Equipment bracket; 8. Fastening knob; 9. Positioning assembly; 91. Pull plate; 92. Positioning rod; 93. Limiting plate; 94. Spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1-4 This utility model provides an adjustable car seat back bracket, including a mounting base 1, which includes a mounting frame 11. The top of the mounting frame 11 has a slot 13, and the bottom of the mounting frame 11 has positioning holes 12. A movable frame 2 is mounted on the mounting frame 11. The movable frame 2 is engaged in the slot 13 by a top protrusion 21. A positioning component 9 is provided at the bottom of the movable frame 2. The positioning component 9 includes a pull plate 91. A positioning rod 92 on the pull plate 91 slides through the bottom of the movable frame 2. A limit plate 93 is provided on the positioning rod 92. The limit plate 93 is connected to the inner wall of the movable frame 2 by a spring 94. The top of the positioning rod 92 is correspondingly adapted to the positioning hole 12. A first rotating frame 3 is mounted on the back side of the movable frame 2. A first extension arm 4 is hinged to the first rotating frame 3. The first extension arm 4 is hinged to a second extension arm 5. The second extension arm 5 is hinged to a second rotating frame 6. An equipment bracket 7 is mounted on the second rotating frame 6.

[0017] Fastening knobs 8 are provided at the connection points between the first rotating frame 3 and the first extension arm 4, the first extension arm 4 and the second extension arm 5, and the second extension arm 5 and the second rotating frame 6.

[0018] Mounting bracket 11 is fixed to one side of mounting plate 16. A snap-fit ​​rod 14 is fixedly provided on the back side of mounting plate 16. A limiting groove 141 adapted to the headrest insert rod is provided in snap-fit ​​rod 14. A fastening nut 15 is screwed onto snap-fit ​​rod 14.

[0019] The first extension arm 4 and the second extension arm 5 are arranged alternately, one above the other.

[0020] The shape of the protrusion 21 is adapted to the groove 13, and the protrusion 21 can slide along the length of the groove 13.

[0021] Spring 94 is sleeved on the outside of positioning rod 92, and both ends of spring 94 abut against the inner wall of limiting plate 93 and moving frame 2 respectively.

[0022] Specifically, the slot 13 on the top of the mounting frame 11 is adapted to the shape of the protrusion 21 on the top of the movable frame 2, and the protrusion 21 can slide along the length of the slot 13, so that the movable frame 2 can move independently along the mounting frame 11. The sliding process only involves the lateral dimension and does not affect the angle adjustment structure such as the first rotating frame 3, the first extension arm 4, and the second extension arm 5, which greatly improves the operating efficiency. Meanwhile, the positioning component 9 at the bottom of the mobile frame 2 further enhances the accuracy and stability of lateral adjustment: the top of the positioning rod 92 corresponds to the positioning hole 12 at the bottom of the mounting frame 11, and the spring 94 is sleeved on the outside of the positioning rod 92, with both ends abutting against the limiting plate 93 and the inner wall of the mobile frame 2 respectively, continuously applying an upward preload to the positioning rod 92. When the mobile frame 2 slides to the target position, the positioning rod 92 can automatically engage with the corresponding positioning hole 12, forming a reliable mechanical lock, which can effectively resist vibrations such as bumps and rapid acceleration during vehicle movement, prevent lateral position loosening and displacement, and ensure that the equipment is always in the user-preset lateral position. Whether it is for rear passengers watching movies, working, or aiming at the target scene during shooting, the position can remain stable. The first extension arm 4 and the second extension arm 5 are staggered vertically, creating a height difference between them. This allows the first extension arm 4 to rotate around the first rotating frame 3 and the second extension arm 5 to rotate around the first extension arm 4 without structural interference, significantly expanding the rotation angle range of each joint. Combined with the fastening knobs 8 at each connection point, once the first extension arm 4 and the second extension arm 5 are adjusted to the target angle, tightening the fastening knobs 8 locks the relative position of each joint, ensuring that the angle will not shift due to vehicle vibration. This combination of wide-angle adjustment and rigid locking allows the equipment bracket 7 to flexibly adapt to diverse scenarios. The mounting bracket 11 is fixed to one side of the mounting plate 16. The snap-fit ​​rod 14 on the back of the mounting plate 16 has a limiting groove 141 that matches the headrest insert rod. It is then tightened with a screw-on fastening nut 15, ensuring the bracket is securely connected to the car seat back and preventing it from shaking or falling off while the vehicle is in motion. Combined with the positioning lock for lateral adjustment and the knob lock for angle adjustment, the equipment bracket 7 can stably support electronic devices such as mobile phones and tablets, eliminating the risk of equipment slippage due to structural loosening during use. This ensures equipment safety and avoids disturbing passengers.

[0023] Working principle: Align the snap-fit ​​rod 14 on the back of the mounting plate 16 with the headrest insert rod, so that the headrest insert rod is embedded in the limiting groove 141, and tighten the fastening nut 15 to ensure that the mounting bracket 11 is firmly attached to the chair back with the mounting plate 16 to avoid overall shaking. Pull the pull plate 91 at the bottom of the movable frame 2. The positioning rod 92 moves down with the pull plate 91, compresses the spring 94 and disengages from the positioning hole 12 at the bottom of the mounting frame 11. Push the movable frame 2 so that the top of its locking protrusion 21 slides left and right along the locking groove 13 of the mounting frame 11. After reaching the target lateral position, release the pull plate 91. The spring 94 returns to its original position and pushes the positioning rod 92 up, locking it into the corresponding positioning hole 12, thus completing the lateral fixation. Loosen the fastening knobs 8 at the connection points of the first rotating frame 3 and the first extension arm 4, the first extension arm 4 and the second extension arm 5, and the second extension arm 5 and the second rotating frame 6. Since the first extension arm 4 and the second extension arm 5 are staggered vertically, there is no interference when rotating. Flexibly adjust the angle through the first rotating frame 3 and the second rotating frame 6 until the equipment bracket 7 is at the appropriate viewing angle. Tighten all the fastening knobs 8 to lock the angle and height, and fix the electronic equipment to the equipment bracket 7. It is then ready for use.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable car seat back bracket, comprising a mounting base (1), characterized in that: The mounting base (1) includes a mounting bracket (11), the top of which has a slot (13), and the bottom of which has positioning holes (12). A movable bracket (2) is mounted on the mounting bracket (11), and the movable bracket (2) is engaged in the slot (13) by a top protrusion (21). A positioning component (9) is provided at the bottom of the movable bracket (2), and the positioning component (9) includes a pull plate (91). A positioning rod (92) on the pull plate (91) slides through the bottom of the movable bracket (2). A limiting plate (93) is provided on the positioning rod (92). The limiting plate (93) is connected to the inner wall of the moving frame (2) by a spring (94). The top end of the positioning rod (92) is adapted to the positioning hole (12). A first rotating frame (3) is installed on the back side of the moving frame (2). A first extension arm (4) is hinged on the first rotating frame (3). The first extension arm (4) is hinged to a second extension arm (5). The second extension arm (5) is hinged to a second rotating frame (6). An equipment bracket (7) is installed on the second rotating frame (6).

2. The adjustable car seat back support according to claim 1, characterized in that: A fastening knob (8) is provided at the connection between the first rotating frame (3) and the first extension arm (4), the first extension arm (4) and the second extension arm (5), and the second extension arm (5) and the second rotating frame (6).

3. The adjustable car seat back support according to claim 1, characterized in that: The mounting bracket (11) is fixed on one side of the mounting plate (16), and a snap-fit ​​rod (14) is fixedly provided on the back side of the mounting plate (16). A limiting groove (141) adapted to the headrest insert rod is provided in the snap-fit ​​rod (14), and a fastening nut (15) is screwed on the snap-fit ​​rod (14).

4. The adjustable car seat back support according to claim 1, characterized in that: The first extension arm (4) and the second extension arm (5) are arranged alternately in the vertical direction.

5. The adjustable car seat back support according to claim 1, characterized in that: The shape of the protrusion (21) is adapted to the groove (13), and the protrusion (21) can slide along the length direction of the groove (13).

6. The adjustable car seat back bracket according to claim 1, characterized in that: The spring (94) is sleeved on the outside of the positioning rod (92), and the two ends of the spring (94) abut against the inner wall of the limiting plate (93) and the moving frame (2), respectively.

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