Table plate structure with unlocking structure and automobile seat

Abstract

The invention relates to the technical field of table plate structures, in particular to a table plate structure with an unlocking structure and an automobile seat, which comprises a back plate, a storage groove is formed in one side of the back plate, a connecting seat is mounted at one end of the inner side of the storage groove, a connecting frame is mounted in the connecting seat in an embedded manner, and damping rotating shafts are rotatably connected to two ends of the bottom of the connecting frame; the other end of the outer wall of the damping rotating shaft is fixedly sleeved with a fixing frame, the fixing frame is connected with the connecting frame in a clamped mode through a locking mechanism, a containing cover is installed on the fixing frame through a connecting assembly, and the locking mechanism comprises a pushing assembly and a positioning assembly. According to the invention, the structure is simple, the operation is convenient, the position of the table plate component can be quickly locked and unlocked during actual use, the use of personnel is facilitated, the locked position can be further reinforced and positioned, the stability during actual use is further improved, and the table cannot be easily unfolded by mistaken touch.

Description

Technical Field

[0001] This invention relates to the field of tabletop structure technology, specifically to a tabletop structure with an unlocking mechanism and a car seat. Background Technology

[0002] In recent years, with the rapid development of the automotive industry and the increasing demands of people for a better car riding experience, the integration of car seat functions has become an important development trend, providing passengers with diverse functions during the journey. As people's requirements for the quality of the car driving experience improve, various functional configurations are constantly being enriched. Among them, the addition of a table to the car seat is very popular. Passengers can use the table to place items, read, write, etc., during the journey. To facilitate the unfolding and folding of the table, it is often equipped with an unlocking mechanism. Currently, there are various unlocking methods for table in existing technology. Most of them use a simple press-type structure composed of spring components and limiting components to achieve locking and unlocking. The operation is convenient, but it is easily affected by the daily movements of passengers. For example, when the vehicle is in motion, if a passenger gets up or adjusts their sitting posture, the unintentional touch of clothing, bags, or body may accidentally press the unlocking button, causing the table to accidentally loosen and fall suddenly, causing injury to the people in the car. Summary of the Invention

[0003] (1) Technical problems to be solved To address the shortcomings of existing technologies, the present invention aims to provide a tabletop structure with an unlocking mechanism. This device aims to solve the technical problem that existing unlocking mechanisms are easily affected by passengers' daily actions. For example, when a passenger gets up or adjusts their sitting posture while the vehicle is in motion, unintentional contact with clothing, bags, or the body may accidentally press the unlocking button, causing the tabletop to accidentally loosen and fall suddenly, causing injury to people inside the vehicle.

[0004] (2) Technical solution To solve the above-mentioned technical problems, the present invention provides a tabletop structure with an unlocking mechanism, including a back panel, a storage groove on one side of the back panel, a connecting seat installed at one end of the inner side of the storage groove, a connecting frame embedded inside the connecting seat, damping shafts rotatably connected to both ends of the bottom of the connecting frame, and a fixing frame fixedly fitted at the other end of the outer wall of the damping shaft. The fixing frame is engaged with the connecting frame by a locking mechanism, and a placement cover is installed on the fixing frame by a connecting component. The locking mechanism includes a pushing component and a positioning component. The pushing component is used to drive the positioning component to move, and the positioning component is used to lock the position of the fixing frame.

[0005] When using a tabletop structure with an unlocking mechanism according to this solution, the storage slot on one side of the back panel provides storage space for the whole. The connecting frame is installed on one end of the storage slot via the connecting seat. The fixed frame is rotatably connected to the connecting frame via a damping pivot. At this time, the positioning component locks the fixed frame in a specific position. The rubber pad is embedded in the inner wall of one side of the connecting frame. The support plate is installed on one side of the inner wall of the connecting seat. The pusher slides the synchronous block in the synchronous groove. At this time, the first and second fixing parts move away and no longer adhere, allowing the pressure block to slide in the extension groove. When the two sets of inclined surfaces abut, the pusher is pressed to avoid. At this time, the support plate will squeeze the rubber pad to retract. The limit block slides in the limit groove and squeezes the first spring to retract. One end of the connecting rod is rotatably connected to the torsion groove of the pusher. During the pushing process, the pressure block contacts the torsion plate and compresses the torsion spring on its connecting rod. After enough space is left for the torsion plate to rotate again, the torsion spring can drive it to pop out to abut. Inside the slot, when the placement cover is damaged, the operating ring can be engaged to move the second upright plate, stretching the second spring and allowing the splicing rod to be pulled out from the splicing hole inside the placement block. Then, the placement cover and the placement block can be pulled out together for repair or replacement. After the placement cover is repaired or a new placement cover is prepared, the splicing rod is kept in the pulled-out state, and the placement cover can be inserted into the inside of the fixed frame, allowing the placement block to engage with the placement slot on the inner wall of the fixed frame, achieving temporary positioning of the placement cover. At this time, the operating ring can be released to allow the second spring to move the second upright plate back to its original position, allowing the splicing rod to engage with the splicing hole, achieving the final positioning effect. The structure is simple and easy to operate. In actual use, the position of the tabletop components can be quickly locked and unlocked, making it convenient for personnel to use. Furthermore, the locked position can be further reinforced, increasing the stability during actual use and preventing accidental unfolding.

[0006] Preferably, the positioning component includes a rubber pad embedded in the inner wall of one side of the connecting frame, an extension groove of the rubber pad, a pressing block slidably connected inside the extension groove, a locking groove inside the connecting frame located on one side of the extension groove, a limit groove at one end of the inner side of the locking groove, a limit block slidably connected inside the limit groove, the limit groove has a T-shaped cross section, and a push seat is installed at the other end of the limit block.

[0007] Furthermore, both the pressing block and the pushing seat have inclined surfaces at their opposite ends, with the two sets of inclined surfaces corresponding to each other. The outer wall of the pressing block has an abutment groove at its inclined surface, and the outer wall of the pushing seat has a torsion groove at its inclined surface. One end of the inner side of the torsion groove is rotatably connected to a connecting rod, and one end of the outer wall of the connecting rod is fixedly fitted with a torsion plate. A torsion spring is installed between the other end of the connecting rod and the inner wall of the torsion groove. The torsion plate and the abutment groove are slidably connected.

[0008] Furthermore, a first spring is installed between the two ends of the other side of the limiting block and the inner wall of the limiting groove. A sliding rod is installed on the outer wall of the limiting block between the two sets of first springs. A pull ring is rotatably connected to one end of the sliding rod extending to the outside of the fixed frame. The pull ring is made of rubber. A hook post is installed on the outer wall of the fixed frame on one side of the sliding rod.

[0009] Furthermore, the pushing assembly includes a support plate installed on one side of the inner wall of the connecting seat. A synchronization groove is provided on the top of the support plate, and a synchronization block is slidably connected inside the synchronization groove. The side sections of both the synchronization groove and the synchronization block are T-shaped, and a push plate is installed on the top of the synchronization block.

[0010] Furthermore, one side of the push plate is fixedly connected to one side of the pressure block, a first fixing member is embedded in the side of the synchronizing block near the bottom, and a second fixing member corresponding to the first fixing member is embedded in one side of the inner wall of the synchronizing groove.

[0011] Furthermore, one of the first fixing member and the second fixing member is a first magnet, and the other of the first fixing member and the second fixing member is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other.

[0012] Furthermore, the connecting component includes a placement groove formed on one side of the inner wall of the fixed frame, a placement block slidably connected to the inner side of the placement groove, one side of the placement block being fixedly connected to the outer wall of the placement cover, and the placement cover being slidably connected to the inner side of the fixed frame.

[0013] Furthermore, a first upright plate is installed on the outer wall of the fixed frame near the placement slot. A second spring is installed on one side of the first upright plate, and a second upright plate is installed on the other end of the second spring. An operating ring is rotatably connected to the outer wall of the second upright plate. A splicing rod is installed on one side of the second upright plate. The splicing rod is slidably connected to the first upright plate, and the other end of the splicing rod is fixedly connected to one side of the second upright plate. A splicing hole extending into the interior of the placement block is opened on the outer wall of the fixed frame, and the splicing rod is slidably connected to the splicing hole.

[0014] The second objective of this invention is to provide the following technical solution: A car seat, including a table structure with an unlocking mechanism as described above.

[0015] (3) Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, a storage slot on one side of the back panel provides storage space for the whole. The connecting frame is installed on one end of the storage slot via a connecting seat. The fixed frame is rotatably connected to the connecting frame via a damping pivot. At this time, the positioning component locks the fixed frame in a specific position. The rubber pad is embedded in the inner wall of one side of the connecting frame. The support plate is installed on one side of the inner wall of the connecting seat. The synchronous block is pushed to slide in the synchronous slot. At this time, the first and second fixing parts are far apart and no longer adsorbed, so that the pressure block slides in the extension slot. The pushing component drives the positioning component to move. The positioning component locks the position of the fixed frame. The structure is simple and easy to operate. In actual use, the position of the tabletop component can be quickly locked and unlocked, which is convenient for personnel to use. Furthermore, the locked position can be further reinforced, which further increases the stability in actual use and prevents it from being easily accidentally opened.

[0016] 2. In this invention, by connecting the components of the assembly, when the placement cover is damaged, the operating ring can be engaged to move the second upright plate, stretching the second spring so that the splicing rod can be pulled out from the splicing hole in the placement block. Then the placement cover and the placement block can be pulled out together for repair or replacement.

[0017] 3. In this invention, after locking, depending on whether the actual driving road is bumpy, the rubber pull ring itself can be stretched to a certain extent, and its arc segment can be hooked around the protruding end of the hook post, so that the inner wall of the retracted pull ring is tightly attached to the outer wall of the hook post, further enhancing the stability after positioning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the fixing frame and connecting bracket of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention without a placement cover; Figure 4 This is a schematic diagram of the three-dimensional structure of the cover of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the first and second vertical plates of the present invention; Figure 6 This is a three-dimensional structural diagram of the connecting frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the hook column of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the rubber pad of the present invention; Figure 9 This is a three-dimensional structural diagram of the pushing component of the present invention; Figure 10 This is a partial three-dimensional cross-sectional view of the fixing frame and connecting bracket of the present invention.

[0019] In the diagram: 1. Back plate; 2. Connecting frame; 3. Damping shaft; 4. Fixing frame; 5. Placement cover; 6. Connecting rod; 7. Limiting block; 8. Pressing block; 9. Pushing seat; 10. Torsion plate; 11. Torsion spring; 12. First spring; 13. Sliding rod; 14. Pull ring; 15. Hook column; 16. Support plate; 17. Synchronizing block; 18. Push plate; 19. Second fixing component; 20. Connecting seat; 21. Placement block; 22. First upright plate; 23. Second upright plate; 24. Operating ring; 25. Assembling rod; 26. Rubber pad; 27. Second spring. Detailed Implementation

[0020] This specific embodiment is a table structure and a car seat with an unlocking mechanism, and its structural diagram is shown below. Figure 1-10 As shown, a tabletop structure with an unlocking mechanism includes a back panel 1. A storage slot is provided on one side of the back panel 1. A connecting seat 20 is installed at one end of the inner side of the storage slot. A connecting frame 2 is embedded inside the connecting seat 20. Both ends of the bottom of the connecting frame 2 are rotatably connected to a damping shaft 3. A fixing frame 4 is fixedly sleeved on the other end of the outer wall of the damping shaft 3. The fixing frame 4 is engaged with the connecting frame 2 through a locking mechanism. A placement cover 5 is installed on the fixing frame 4 through a connecting component. The locking mechanism includes a pushing component and a positioning component. The pushing component is used to drive the positioning component to move, and the positioning component is used to lock the position of the fixing frame 4. The structure is simple and easy to operate. In actual use, the position of the tabletop components can be quickly locked and unlocked, which is convenient for personnel to use. Furthermore, the locked position can be further reinforced, which further increases the stability in actual use and prevents it from being easily accidentally opened.

[0021] In this embodiment, the positioning component includes a rubber pad 26 embedded in the inner wall of one side of the connecting frame 2. The rubber pad 26 has an extension groove, and a pressing block 8 is slidably connected inside the extension groove. A locking groove is formed inside the connecting frame 2 on one side of the extension groove. A limit groove is formed at one end of the inner side of the locking groove, and a limit block 7 is slidably connected inside the limit groove. The limit groove has a T-shaped cross-section, and a pushing seat 9 is installed at the other end of the limit block 7. The pushing component includes a support plate 16 installed on one side of the inner wall of the connecting seat 20. A synchronization groove is formed at the top of the support plate 16, and a synchronization block 17 is slidably connected inside the synchronization groove. Both the synchronization groove and the synchronization block 17 have T-shaped side cross-sections. A push plate 18 is installed at the top of the synchronization block 17, and one side of the push plate 18 is fixedly connected to one side of the pressing block 8. A first [unclear - possibly a component or material] is embedded on the side of the synchronization block 17 near its bottom. The fasteners include a second fastener 19 embedded in one side of the inner wall of the synchronization groove, corresponding to the first fastener. One of the first and second fasteners 19 is a first magnet, and the other is a second magnet. The magnetic poles of the first and second magnets are opposite and attract each other. The storage groove on one side of the back plate 1 provides storage space for the whole. The connecting frame 2 is installed at one end of the inner side of the storage groove through the connecting seat 20. The fixing frame 4 is rotatably connected to the connecting frame 2 through the damping pivot 3. At this time, the positioning component locks the fixing frame 4 in a specific position. The rubber pad 26 is embedded in one side of the inner wall of the connecting frame 2. The support plate 16 is installed on one side of the inner wall of the connecting seat 20, pushing the synchronization block 17 to slide in the synchronization groove. At this time, the first and second fasteners 19 move away from each other and no longer attract each other, so that the pressure block 8 slides in the extension groove.

[0022] Secondly, in this embodiment, both the pressing block 8 and the pushing seat 9 have inclined surfaces at their opposite ends, and the two sets of inclined surfaces correspond to each other. The outer wall of the pressing block 8 has an abutment groove at its inclined surface, and the outer wall of the pushing seat 9 has a torsion groove at its inclined surface. One end of the inner side of the torsion groove is rotatably connected to a connecting rod 6, and one end of the outer wall of the connecting rod 6 is fixedly fitted with a torsion plate 10. A torsion spring 11 is installed between the other end of the connecting rod 6 and the inner wall of the torsion groove. The torsion plate 10 is slidably connected to the abutment groove. When the two sets of inclined surfaces abut against each other, the pushing seat 9 is pressed and avoids, at which time the support plate... 16 will compress the rubber pad 26 to retract, while the limiting block 7 slides in the limiting groove and compresses the first spring 12 to retract. One end of the connecting rod 6 is rotatably connected to the torsion groove of the pressing seat 9. During the pushing process, the pressing block 8 contacts the torsion plate 10 and compresses the torsion spring 11 on its connecting rod 6. After enough space is left for the torsion plate 10 to rotate again, the torsion spring 11 can drive it to pop out to the inside of the abutment groove. The torsion plate 10 is slidably connected to the abutment groove on the pressing block 8. The torsion spring 11 maintains a certain torque to ensure the stability of the entire positioning assembly.

[0023] Furthermore, in this embodiment, first springs 12 are installed between the two ends of the other side of the limiting block 7 and the inner wall of the limiting groove. A sliding rod 13 is installed on the outer wall of the limiting block 7 between the two sets of first springs 12. A pull ring 14 is rotatably connected to one end of the sliding rod 13 extending to the outside of the fixed frame 4. The pull ring 14 is made of rubber. A hook post 15 is installed on the outer wall of the fixed frame 4 on one side of the sliding rod 13. At this time, the synchronizing block 17 is released, allowing the rubber pad 26 to rebound a certain distance, causing the position of the abutment groove to shift back, allowing... Its inner wall abuts against the outer wall of the torsion plate 10, thereby firmly locking the fixing frame 4. After locking, depending on whether the actual driving section is bumpy, the rubber pull ring 14 can be stretched to a certain extent, and its arc-shaped section can be hooked around the protruding end of the hook post 15, so that the inner wall of the retracted pull ring 14 is tightly against the outer wall of the hook post 15, further enhancing the stability after positioning. When it is necessary to unfold the fixing frame 4 again, the pull ring 14 can be removed from the protruding end on the hook post 15. Lifting the pull ring 14 causes the sliding rod 13 to move upward, thereby causing the limiting block 7 to slide inside the limiting groove. This compresses the two sets of first springs 12 again, moving the push seat 9 along with it. This causes the torsion plate 10 on it to move away from the inner side of the abutment groove from a horizontal position. Once the torsion plate 10 is away from the inner side of the abutment groove, the resistance on the pressure block 8 disappears. At this time, the rubber pad 26 fully rebounds, and the first spring 12 also rebounds further. During the rebound, the pressure block 8 is dragged a distance so that the port of the abutment groove is no longer opposite the port of the torsion groove. Even if the staff releases the pull ring 14, the reset push seat 9 will not drive the torsion plate 10 to lock the position of the pressure block 8 again. Then, the synchronizing block 17 is held again and moved inside the synchronizing groove so that the pressure block 8 is completely away from the fixing frame 4. Once the first fixing part on the synchronizing block 17 is close to the second fixing part 19, it can be adsorbed and fixed. At this time, the fixing frame 4 can be extended from the inside of the storage groove with the help of the two sets of damping rotating shafts 3, and placed with the cover 5 for personnel to use.

[0024] Furthermore, in this embodiment, the connecting assembly includes a placement groove formed on one side of the inner wall of the fixed frame 4. A placement block 21 is slidably connected to the inner side of the placement groove. One side of the placement block 21 is fixedly connected to the outer wall of the placement cover 5. The placement cover 5 is slidably connected to the inner side of the fixed frame 4. A first upright plate 22 is installed on the outer wall of the fixed frame 4 near the placement groove. A second spring 27 is installed on one side of the first upright plate 22. A second upright plate 23 is installed on the other end of the second spring 27. An operating ring 24 is rotatably connected to the outer wall of the second upright plate 23. A splicing rod 25 is installed on one side of the second upright plate 23. The splicing rod 25 is slidably connected to the first upright plate 22. The other end of the splicing rod 25 is fixedly connected to one side of the second upright plate 23. A splicing hole extending into the interior of the placement block 21 is formed on the outer wall of the fixed frame 4. The splicing rod 25 is slidably connected to the splicing hole. When the placement cover 5 is damaged, the operating ring 24 can be fastened to move the second upright plate 23, stretching the second spring 27 so that the splicing rod 25 can be pulled out from the inside of the splicing hole in the placement block 21. Then, the placement cover 5 and the placement block 21 can be pulled out together for repair or replacement. After the placement cover 5 is repaired or a new placement cover 5 is prepared, the splicing rod 25 is kept in the pulled-out state, and the placement cover 5 can be inserted into the inside of the fixing frame 4, so that the placement block 21 and the placement groove on the inner wall of the fixing frame 4 can be engaged to achieve temporary positioning of the placement cover 5. At this time, the operating ring 24 can be released to allow the second spring 27 to drive the second upright plate 23 to reset, so that the splicing rod 25 can be engaged into the inside of the splicing hole to achieve the final positioning effect.

[0025] When using a tabletop structure with an unlocking mechanism according to this solution, the storage groove on one side of the back panel 1 provides storage space for the whole. The connecting frame 2 is installed on one end of the storage groove through the connecting seat 20. The fixing frame 4 is rotatably connected to the connecting frame 2 through the damping pivot 3. At this time, the positioning component locks the fixing frame 4 in a specific position. The rubber pad 26 is embedded in the inner wall of one side of the connecting frame 2. The support plate 16 is installed on one side of the inner wall of the connecting seat 20. The pusher synchronizing block 17 slides in the synchronizing groove. At this time, the first fixing member and the second fixing member 19 move away and no longer adhere, so that the pressure block 8 slides in the extension groove. When the two sets of inclined surfaces abut, the pusher 9 is pressed to avoid. At this time, the support plate 16 will squeeze the rubber pad 26 to retract. The limiting block 7 slides in the limiting groove and squeezes the first spring. Spring 12 retracts, and one end of connecting rod 6 is rotatably connected to the torsion groove of push seat 9. During the pushing process, pressure block 8 contacts torsion plate 10 and compresses torsion spring 11 on its connecting rod 6. After enough space is left for torsion plate 10 to rotate again, torsion spring 11 can drive it to pop out to the inside of the abutment groove. Torsion plate 10 and abutment groove on pressure block 8 are slidably connected. Torsion spring 11 maintains a certain torque to ensure the stability of the entire positioning assembly. At this time, release synchronization block 17 to allow rubber pad 26 to rebound a certain distance, so that the position of abutment groove moves back, so that its inner wall abuts against the outer wall of torsion plate 10, thereby firmly locking fixed frame 4. After locking, depending on whether the actual driving section is bumpy, the rubber pull ring 14 itself can also be adjusted. A certain degree of stretching is performed, and its arc segment is hooked around the protruding end of the hook post 15, so that the inner wall of the retracted pull ring 14 is tightly attached to the outer wall of the hook post 15, further enhancing the stability after positioning. When the fixing frame 4 needs to be unfolded again, the pull ring 14 can be removed from the protruding end on the hook post 15 by holding it. Then, the pull ring 14 is lifted, which drives the sliding rod 13 to move upward, thereby driving the limiting block 7 to slide inside the limiting groove, squeezing the two sets of first springs 12 again, and driving the push seat 9 together, so that the torsion plate 10 on it moves away from the inner side of the abutment groove from the horizontal position. After the torsion plate 10 moves away from the inner side of the abutment groove, the resistance on the pressure block 8 disappears. At this time, the rubber pad 26 fully rebounds, and the first spring 12 also rebounds further. When rebounding, the pressure block 8 is dragged. Move the device a short distance so that the port of the contact groove is no longer opposite the port of the torsion groove. At this point, even if the operator releases the pull ring 14, the reset push seat 9 will not drive the torsion plate 10 to lock the position of the pressure block 8 again. Then, hold the synchronization block 17 again and move it inside the synchronization groove so that the pressure block 8 is completely away from the fixed frame 4. After the first fixing member on the synchronization block 17 is brought close to the second fixing member 19, it can be adsorbed and fixed. At this time, the fixed frame 4 can be extended from the inside of the storage groove with the help of the two sets of damping rotating shafts 3, and the placement cover 5 can be used by the personnel. When the placement cover 5 is damaged, the operating ring 24 can be fastened to drive the second upright plate 23 to move, stretching the second spring 27, so that the splicing rod 25 can be pulled out from the inside of the splicing hole in the placement block 21.Next, the placement cover 5, along with the placement block 21, can be pulled out for inspection or replacement. After the placement cover 5 has been inspected or a new placement cover 5 has been prepared, the assembly rod 25 is kept in the pulled-out state. The placement cover 5 can then be inserted into the inside of the fixing frame 4, allowing the placement block 21 to engage with the placement groove on the inner wall of the fixing frame 4, thus temporarily positioning the placement cover 5. At this point, the operating ring 24 can be released to allow the second spring 27 to drive the second upright plate 23 to reset, allowing the assembly rod 25 to engage with the inside of the assembly hole, achieving the final positioning effect.

[0026] This invention also provides a car seat, including a table structure with an unlocking mechanism as described above.

[0027] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present technical solution are within the protection scope of the present invention.

Claims

1. A tabletop structure with an unlocking mechanism, comprising a back panel (1), characterized in that: A storage slot is provided on one side of the back plate (1). A connecting seat (20) is installed at one end of the inner side of the storage slot. A connecting frame (2) is embedded in the connecting seat (20). A damping shaft (3) is rotatably connected to both ends of the bottom of the connecting frame (2). A fixing frame (4) is fixedly sleeved on the other end of the outer wall of the damping shaft (3). The fixing frame (4) is engaged with the connecting frame (2) through a locking mechanism. A placement cover (5) is installed on the fixing frame (4) through a connecting component. The locking mechanism includes a pushing component and a positioning component. The pushing component is used to drive the positioning component to move. The positioning component is used to lock the position of the fixing frame (4).

2. The tabletop structure with an unlocking mechanism according to claim 1, characterized in that: The positioning component includes a rubber pad (26) embedded in the inner wall of one side of the connecting frame (2), an extension groove of the rubber pad (26), a pressing block (8) slidably connected to the inner side of the extension groove, a locking groove is provided inside the connecting frame (2) on one side of the extension groove, a limiting groove is provided at one end of the inner side of the locking groove, a limiting block (7) slidably connected to the inner side of the limiting groove, the limiting groove has a T-shaped cross section, and a pushing seat (9) is installed at the other end of the limiting block (7).

3. The tabletop structure with an unlocking mechanism according to claim 2, characterized in that: The opposite ends of the pressing block (8) and the pushing seat (9) are provided with inclined surfaces, and the two sets of inclined surfaces correspond to each other. The outer wall of the pressing block (8) is provided with an abutment groove at its inclined surface, and the outer wall of the pushing seat (9) is provided with a torsion groove at its inclined surface. One end of the inner side of the torsion groove is rotatably connected to a connecting rod (6). One end of the outer wall of the connecting rod (6) is fixedly fitted with a torsion plate (10). The other end of the connecting rod (6) and the inner wall of the torsion groove are connected with a torsion spring (11). The torsion plate (10) and the abutment groove are slidably connected.

4. A tabletop structure with an unlocking mechanism according to claim 3, characterized in that: First springs (12) are installed between the two ends of the other side of the limiting block (7) and the inner wall of the limiting groove. A sliding rod (13) is installed on the outer wall of the limiting block (7) between the two sets of first springs (12). A pull ring (14) is rotatably connected to one end of the sliding rod (13) extending to the outside of the fixed frame (4). The pull ring (14) is made of rubber. A hook post (15) is installed on one side of the sliding rod (13) on the outer wall of the fixed frame (4).

5. A tabletop structure with an unlocking mechanism according to claim 4, characterized in that: The pushing assembly includes a support plate (16) installed on one side of the inner wall of the connecting seat (20). A synchronization groove is provided on the top of the support plate (16). A synchronization block (17) is slidably connected to the inner side of the synchronization groove. The side sections of the synchronization groove and the synchronization block (17) are both T-shaped. A push plate (18) is installed on the top of the synchronization block (17).

6. A tabletop structure with an unlocking mechanism according to claim 5, characterized in that: One side of the push plate (18) is fixedly connected to one side of the pressure block (8), and a first fixing member is embedded in the side of the synchronizing block (17) near the bottom end. A second fixing member (19) corresponding to the first fixing member is embedded in one side of the inner wall of the synchronizing groove.

7. A tabletop structure with an unlocking mechanism according to claim 6, characterized in that: One of the first fixing member and the second fixing member (19) is a first magnet, and the other of the first fixing member and the second fixing member (19) is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other.

8. A tabletop structure with an unlocking mechanism according to claim 7, characterized in that: The connecting component includes a placement groove opened on one side of the inner wall of the fixed frame (4), a placement block (21) is slidably connected to the inner side of the placement groove, one side of the placement block (21) is fixedly connected to the outer wall of the placement cover (5), and the placement cover (5) is slidably connected to the inner side of the fixed frame (4).

9. A tabletop structure with an unlocking mechanism according to claim 8, characterized in that: A first upright plate (22) is installed on the outer wall of the fixed frame (4) near the placement slot. A second spring (27) is installed on one side of the first upright plate (22). A second upright plate (23) is installed on the other end of the second spring (27). An operating ring (24) is rotatably connected to the outer wall of the second upright plate (23). A splicing rod (25) is installed on one side of the second upright plate (23). The splicing rod (25) is slidably connected to the first upright plate (22). The other end of the splicing rod (25) is fixedly connected to one side of the second upright plate (23). A splicing hole extending into the placement block (21) is opened on the outer wall of the fixed frame (4). The splicing rod (25) is slidably connected to the splicing hole.

10. A car seat, characterized in that: The table structure includes any one of claims 1 to 9, which has an unlocking mechanism.

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