Telescopic car seat small table board

Abstract

The telescopic car seat small table board comprises an upper table board framework assembly and a lower table board framework assembly which are connected in a front-back sliding mode, the outer side of the front end of the lower table board framework assembly is coated with a first coating panel, and the outer side of the rear end of the upper table board framework assembly is coated with a second coating panel; the top face of the first covering panel is flush with the top face of the second covering panel, and after the top faces of the first covering panel and the second covering panel are in butt joint, an outer covering panel covering the whole framework assembly can be formed. The middle section plastic part middle wrapping panel, the middle section plastic part left wrapping panel and the middle section plastic part right wrapping panel are connected between the top face of the first wrapping panel and the top face of the second wrapping panel in a contact mode, and the top faces of the middle section plastic part middle wrapping panel, the middle section plastic part left wrapping panel and the middle section plastic part right wrapping panel are flush with the top face of the external wrapping panel. And the three parts can be hidden in the external coating panel. The length can be effectively adjusted, and meanwhile the attractive appearance, use comfort and safety can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to a retractable small table board for an automobile seat. Background Art

[0002] With the continuous development of the automotive industry, car seat tray tables, as a key feature that enhances the passenger experience, are attracting increasing attention for their design and functionality. Passengers often need to place items, eat, and work while driving. Therefore, car seat tray tables must be of sufficient length and stability to accommodate diverse usage scenarios. Currently, there are two common methods for adjusting the length of car seat tray tables on the market, both of which have significant drawbacks. One common method uses a folding mechanism to increase the tray table's length. While this folding tray table achieves some degree of length adjustment, it also presents several issues. The folding mechanism is often exposed, severely detracting from the exquisite craftsmanship and overall aesthetics of the seat. More importantly, the folding tray table's unlocking mechanism is also exposed, making it easy for rear passengers, especially children, to accidentally trigger the unlocking mechanism, causing the tray table to open unexpectedly. This not only interferes with normal passenger use but also poses a safety hazard, significantly impacting the passenger experience. Another approach uses a retractable drawer-like mechanism to extend the tray table. However, this structure also has significant drawbacks. When extended, the drawer-style retractable tray table has a step. This makes the surface uneven, making it easy for passengers to place items on it and slip. It also affects the use of electronic devices such as laptops, making them less comfortable. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention aims to provide a retractable car seat table that can effectively adjust the length while ensuring beautiful appearance, comfort and safety.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a retractable small table for a car seat, comprising a frame assembly, a middle covering panel of a middle plastic part, a left covering panel of the middle plastic part, and a right covering panel of the middle plastic part, the frame assembly comprising an upper table frame assembly and a lower table frame assembly connected in a front-to-rear sliding manner, the front end outer side of the lower table frame assembly is covered with a first covering panel, the rear end outer side of the upper table frame assembly is covered with a second covering panel, the top surfaces of the first covering panel and the second covering panel are flush, and when the top surfaces of the two are butted together, an external covering panel that covers the entire frame assembly can be formed, the left covering panel of the middle plastic part and the right covering panel of the middle plastic part are respectively contacted and connected to the left and right sides of the middle covering panel of the middle plastic part, and are respectively fixedly connected to the top of the upper table frame assembly by push-to-close latches;

[0005] When the small table board of the car seat is in an extended state, the middle covering panel of the middle-section plastic part, the left covering panel of the middle-section plastic part and the right covering panel of the middle-section plastic part are all in contact and connected between the top surfaces of the first covering panel and the second covering panel, and the top surfaces of the three are all flush with the top surface of the outer covering panel; when the small table board of the car seat is in a retracted state, the first covering panel is connected to the top surface of the second covering panel, and the middle covering panel of the middle-section plastic part, the left covering panel of the middle-section plastic part and the right covering panel of the middle-section plastic part can all sink, thereby being hidden inside the outer covering panel.

[0006] In the above scheme: two first arc-shaped holes are relatively arranged on the left and right sides of the lower table frame assembly, and the first arc-shaped holes extend counterclockwise from the front to the upper rear side; two second arc-shaped holes are relatively arranged on the left and right sides of the upper table frame assembly, and the second arc-shaped holes extend counterclockwise from the front to the lower rear side, and their ends extend horizontally backward to form a strip hole segment; the front end of the middle covering panel of the middle section plastic part is rotatably connected to the first transverse rotating shaft, and the first transverse rotating shaft is rotatably and slidably connected between the two first arc-shaped holes; the rear end of the middle covering panel of the middle section plastic part is rotatably connected to the second transverse rotating shaft, and the second transverse rotating shaft is rotatably and slidably connected between the two second arc-shaped holes;

[0007] When the small table of the car seat is in the extended state, the first transverse rotating shaft is located at the end of the two first arc-shaped holes, and the second transverse rotating shaft is located at the front end of the two second arc-shaped holes, so that the middle covering panel of the middle section plastic part, the left covering panel of the middle section plastic part and the right covering panel of the middle section plastic part are all in contact and connected between the top surfaces of the first covering panel and the second covering panel; pressing the left covering panel of the middle section plastic part and the right covering panel of the middle section plastic part can make them push-to-close. When the upper table top frame assembly is pushed forward, the first horizontal rotating shaft is forced to slide forward along the first arc hole, and the second horizontal rotating shaft is forced to slide backward along the second arc hole, so that the middle covering panel of the middle section plastic part automatically sinks. When the first horizontal rotating shaft slides to the front end of the first arc hole, the upper table top frame assembly is continued to be pushed forward, which can force the second horizontal rotating shaft to slide along the strip hole section of the second arc hole, thereby realizing the top surface connection between the first covering panel and the second covering panel, and then hiding the middle covering panel of the middle section plastic part, the left covering panel of the middle section plastic part and the right covering panel of the middle section plastic part in the outer covering panel.

[0008] This structure sets a first arc-shaped hole and a second arc-shaped hole with a specific direction, and a first horizontal rotating shaft and a second horizontal rotating shaft that cooperate with them, so that during the extension and retraction of the small table, the middle section of the plastic part and the middle covering panel can move smoothly along a predetermined trajectory. This design ensures the smoothness of the extension and retraction operation, reduces jamming and shaking, and improves the user experience.

[0009] In the above solution, the lower tray frame assembly is provided with two opposing, front-to-back, strip-shaped holes. The upper tray frame assembly is slidably connected to the two holes at each end via bolts and nuts. Two bolts are positioned at each end, spaced apart from each other. This design allows the upper tray frame assembly to slide back and forth along the strip-shaped holes, thereby achieving the telescopic function of the tray, meeting the user's desired tray length in different usage scenarios.

[0010] In the above scheme: a rotating shaft mounting bracket is welded on the lower table board frame assembly, the rotating shaft mounting bracket is a U-shaped structure, and the two first arc-shaped holes are respectively arranged on the two ends of the rotating shaft mounting bracket. This structural form is relatively simple and easy to process and manufacture, making the first arc-shaped holes easy to arrange.

[0011] In the above scheme: the lower table board frame assembly includes two lower table board side panels arranged opposite to each other on the left and right, the front ends of the two lower table board side panels are connected by a front end reinforcement bracket, and the rear ends of the two lower table board side panels are connected by a rear end reinforcement bracket, and the middle part of the front end reinforcement bracket and the middle part of the rear end reinforcement bracket are connected by a middle section reinforcement bracket, forming a stable frame structure. This structure can provide users with a safer and more reliable use experience.

[0012] In the above solution: the rotating shaft mounting bracket is welded to the middle front position of the middle section reinforcement bracket, and the two shaped holes are respectively arranged on the two lower table board side panels, which has a simple structure and is easy to arrange.

[0013] In the above scheme: the upper table board frame assembly includes two upper table board side panels arranged opposite to each other on the left and right, the front ends of the two upper table board side panels are connected by an intermediate reinforcing bracket, and the two second arc-shaped holes are respectively arranged at the rear ends of the two upper table board side panels. The structure is simple and the layout is convenient.

[0014] A bushing is arranged between the upper table board side plate and the lower table board side plate on the same side, and the bushing is sleeved on the bolt.

[0015] In the above solution, the inner walls of both upper tabletop side panels are provided with lugs. The left cladding panel of the middle plastic section is secured to the left cladding panel via a Push-to-close latch, while the right cladding panel of the middle plastic section is secured to the right cladding panel via a Push-to-close latch. Pressing the left and right cladding panels of the middle plastic section (i.e., pressing the Push-to-close latch) causes the left and right cladding panels of the middle plastic section to sink. Pressing the Push-to-close latch again causes the left and right cladding panels of the middle plastic section to rise, thereby aligning them with the outer cladding panels when the car seat tray is extended.

[0016] Push-to-close latch is a prior art, which is an automatic rebound locking device, and is generally used in situations where automatic closing or locking is required, such as kitchen cabinet doors, drawers, etc.

[0017] The bottoms of the front and rear ends of the middle covering panel of the middle plastic part, the left covering panel of the middle plastic part and the right covering panel of the middle plastic part are all provided with horizontal abutting surfaces for abutting upward against the inner wall of the outer covering panel to prevent the top surface of the above-mentioned covering panels from being higher than the outer covering panel when the small table of the car seat is extended.

[0018] In the above scheme: the first covering panel and the second covering panel are both composed of two upper and lower covering panels, and the upper and lower covering panels are both clipped and fixed to the corresponding upper table board frame assembly or lower table board frame assembly, wherein the covering panel located on the lower side of the upper table board frame assembly and the covering panel located on the lower side of the lower table board frame assembly have an overlapping area, so that the bottom of the small table board of the car seat can still be completely covered when it is extended.

[0019] The beneficial effects of the present invention are:

[0020] 1. In the extended state, the middle covering panel of the middle plastic part, the left covering panel of the middle plastic part, and the right covering panel of the middle plastic part are all in contact and connected between the top surfaces of the first covering panel and the second covering panel, and the top surfaces of the three are all flush with the top surface of the outer covering panel. The entire desktop is flat and smooth, providing passengers with a stable and comfortable platform for use, whether it is for placing items or conducting office work, dining and other activities, they can have a good experience. 2. In the retracted state, the first covering panel can be connected to the top surface of the second covering panel, and the middle covering panel of the middle plastic part, the left covering panel of the middle plastic part, and the right covering panel of the middle plastic part can all sink, thereby being perfectly hidden in the outer covering panel. The entire small table has a flat and simple appearance, without any exposed complex mechanisms. 3. The operation is simple and convenient. The user only needs to switch the status of the small table through a simple telescopic action. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the lower table assembly.

[0022] Figure 2 It is a structural diagram of the upper table assembly.

[0023] Figure 3 It is a structural diagram of the middle covering panel of the middle section plastic part.

[0024] Figure 4 It is a structural schematic diagram of the first horizontal rotating shaft and the second horizontal rotating shaft.

[0025] Figure 5 It is a structural schematic diagram of the left side covering panel of the middle section plastic part and the right side covering panel of the middle section plastic part.

[0026] Figure 6 It is a structural diagram of the bolt, nut, bushing and Push-to-close latch.

[0027] Figure 7 It is a schematic diagram of the car seat tray in the retracted state.

[0028] Figure 8 It is a schematic diagram of the small table of the car seat in the extended state (the left covering panel of the middle plastic part and the right covering panel of the middle plastic part have not risen).

[0029] Figure 9 It is a schematic diagram of the small table of the car seat in the extended state (the left covering panel of the middle plastic part and the right covering panel of the middle plastic part have risen).

[0030] Figure 10 yes Figure 9 Top view of .

[0031] Figure 11 yes Figure 10 Schematic diagram of the structure at AA in the middle.

[0032] Figure 12 yes Figure 10 Schematic diagram of the local structure at the middle BB.

[0033] Figure 13 It is a structural diagram of all cladding panels. DETAILED DESCRIPTION

[0034] like Figure 1 As shown in FIG. 13 , a retractable car seat table mainly consists of a skeleton assembly, a middle plastic part middle covering panel 16, a middle plastic part left covering panel 20 and a middle plastic part right covering panel 19.

[0035] The frame assembly comprises an upper table frame assembly 11 and a lower table frame assembly 10, which are connected in a sliding manner. The front end of the lower table frame assembly 10 is covered with a first cover panel 12, and the rear end of the upper table frame assembly 11 is covered with a second cover panel 13. The top surfaces of the first cover panel 12 and the second cover panel 13 are flush, and when the top surfaces of the two are connected, they form an external cover panel 14 that completely encloses the frame assembly. The left cover panel 20 and the right cover panel 19 of the middle plastic section are respectively connected to the left and right sides of the middle cover panel 16 of the middle plastic section, and are fixed to the top of the upper table frame assembly 11 via push-to-close latches 24.

[0036] When the tray table is extended, the middle plastic section's middle cover panel 16, the middle plastic section's left cover panel 20, and the middle plastic section's right cover panel 19 are all connected and in contact between the top surfaces of the first cover panel 12 and the second cover panel 13, and their top surfaces are flush with the top surface of the outer cover panel 14. When the tray table is retracted, the top surfaces of the first cover panel 12 and the second cover panel 13 are aligned, and the middle plastic section's middle cover panel 16, the middle plastic section's left cover panel 20, and the middle plastic section's right cover panel 19 are able to sink, thereby being concealed within the outer cover panel 14.

[0037] Preferably, the lower table frame assembly 10 has two first arcuate holes 25 disposed opposite each other on the left and right sides, extending counterclockwise from the front to the rear and upper sides. The upper table frame assembly 11 has two second arcuate holes 26 disposed opposite each other on the left and right sides, extending counterclockwise from the front to the rear and lower sides, with their ends extending horizontally rearward to form a strip-shaped hole segment. The front end of the intermediate plastic cover panel 16 is rotatably connected to a first transverse rotating shaft 17, which is rotatably and slidably connected between the two first arcuate holes 25. The rear end of the intermediate plastic cover panel 16 is rotatably connected to a second transverse rotating shaft 18, which is rotatably and slidably connected between the two second arcuate holes 26.

[0038] When the small table of the car seat is in the extended state, the first transverse rotating shaft 17 is located at the end of the two first arc-shaped holes 25, and the second transverse rotating shaft 18 is located at the front end of the two second arc-shaped holes 26, so that the middle covering panel 16 of the middle section plastic part, the left covering panel 20 of the middle section plastic part and the right covering panel 19 of the middle section plastic part are all in contact and connected between the top surfaces of the first covering panel 12 and the second covering panel 13.

[0039] Pressing the left side covering panel 20 of the middle section plastic part and the right side covering panel 19 of the middle section plastic part can cause them to sink under the action of the Push-to-close Latch 24. At this time, pushing the upper table frame assembly 11 forward can force the first transverse rotating shaft 17 to slide forward along the first arc hole 25, and at the same time force the second transverse rotating shaft 18 to slide backward along the second arc hole 26, so that the middle covering panel 16 of the middle section plastic part automatically sinks; when the first transverse rotating shaft 17 slides to the front end of the first arc hole 25, continuing to push the upper table frame assembly 11 forward can force the second transverse rotating shaft 18 to slide along the strip hole section of the second arc hole 26, thereby realizing the top surface connection between the first covering panel 12 and the second covering panel 13, and then hiding the middle covering panel 16 of the middle section plastic part, the left side covering panel 20 of the middle section plastic part and the right side covering panel 19 of the middle section plastic part in the outer covering panel 14.

[0040] This structure sets a first arc hole 25 and a second arc hole 26 with a specific direction, and a first horizontal rotating shaft 17 and a second horizontal rotating shaft 18 that cooperate with it, so that during the extension and retraction of the small table, the middle section of the plastic part and the middle covering panel 16 can move smoothly along a predetermined trajectory. This design ensures the smoothness of the extension and retraction operation, reduces jamming and shaking, and improves the user experience.

[0041] Preferably, the lower tray frame assembly 10 is provided with two opposing strip-shaped holes 2 extending forward and backward. The upper tray frame assembly 11 is slidably connected to the two strip-shaped holes 2 at each end via bolts 22 and nuts 21. Two bolts 22 are provided at each end, spaced apart from each other. This design allows the upper tray frame assembly 11 to slide forward and backward along the strip-shaped holes, thereby achieving the telescopic function of the tray, meeting the user's desired tray length in different usage scenarios.

[0042] Preferably, a rotating shaft mounting bracket 6 is welded on the lower table board frame assembly 10, and the rotating shaft mounting bracket 6 is a U-shaped structure, and the two first arc-shaped holes 25 are respectively arranged on the two ends of the rotating shaft mounting bracket 6. This structural form is relatively simple and easy to process and manufacture, making it easy to arrange the first arc-shaped holes 25.

[0043] Preferably, the lower table board frame assembly 10 includes two lower table board side panels 1 arranged opposite to each other on the left and right, the front ends of the two lower table board side panels 1 are connected by a front end reinforcement bracket 4, the rear ends of the two lower table board side panels 1 are connected by a rear end reinforcement bracket 5, and the middle part of the front end reinforcement bracket 4 and the middle part of the rear end reinforcement bracket 5 are connected by a middle section reinforcement bracket 3, forming a stable frame structure, which can provide users with a safer and more reliable use experience.

[0044] Preferably, the rotating shaft mounting bracket 6 is welded to the middle front position of the middle section reinforcement bracket 3, and the two shaped holes 2 are respectively arranged on the two lower table board side panels 1, which has a simple structure and is easy to arrange.

[0045] Preferably, the upper table board frame assembly 11 includes two upper table board side panels 7 arranged opposite to each other on the left and right, the front ends of the two upper table board side panels 7 are connected by an intermediate reinforcing bracket 9, and the two second arc-shaped holes 26 are respectively arranged at the rear ends of the two upper table board side panels 7, with a simple structure and easy layout.

[0046] A bushing 23 is arranged between the upper tabletop side panel 7 and the lower tabletop side panel 1 on the same side, and the bushing 23 is sleeved on the bolt 22 .

[0047] Preferably, the inner walls of both upper table top side panels 7 are provided with ears 8, and the left side cover panel 20 of the middle plastic part is fixed to the left side cover panel 8 by a push-to-close latch 24, and the right side cover panel 19 of the middle plastic part is fixed to the right side cover panel 8 by a push-to-close latch 24. Pressing the left side cover panel 20 and the right side cover panel 19 of the middle plastic part, that is, pressing the push-to-close latch 24, can cause the left side cover panel 20 and the right side cover panel 19 of the middle plastic part to sink. Pressing the push-to-close latch 24 again can cause the left side cover panel 20 and the right side cover panel 19 of the middle plastic part to rise, so that they are flush with the outer cover panel 14 when the car seat tray is extended.

[0048] The Push-to-close Latch 24 is a prior art, which is an automatic rebound locking device, and is generally used in situations where automatic closing or locking is required, such as kitchen cabinet doors, drawers, etc.

[0049] The bottoms of the front and rear ends of the middle covering panel 16 of the middle plastic part, the left covering panel 20 of the middle plastic part and the right covering panel 19 of the middle plastic part are all provided with horizontal abutting surfaces for abutting upward against the inner wall of the outer covering panel 14 to prevent the top surface of the above-mentioned covering panels from being higher than the outer covering panel 14 when the small table of the car seat is extended.

[0050] Preferably, the first covering panel 12 and the second covering panel 13 are both composed of two upper and lower covering panels 15, and the upper and lower covering panels 15 are both clipped and fixed to the corresponding upper table frame assembly 11 or lower table frame assembly 10, wherein the covering panel 15 located on the lower side of the upper table frame assembly 11 and the covering panel 15 located on the lower side of the lower table frame assembly 10 have an overlapping area, so that the bottom of the car seat small table can still be completely covered when it is extended.

Claims

1. A retractable car seat table, including a frame assembly, characterized in that: The invention also includes a middle covering panel (16) of the middle section plastic part, a left covering panel (20) of the middle section plastic part and a right covering panel (19) of the middle section plastic part, wherein the skeleton assembly includes an upper table frame assembly (11) and a lower table frame assembly (10) connected in a front-rear sliding manner, the front outer side of the lower table frame assembly (10) is covered with a first covering panel (12), and the rear outer side of the upper table frame assembly (11) is covered with a second covering panel (13), the top surfaces of the first covering panel (12) and the second covering panel (13) are flush, and when the top surfaces of the two are butted together, an external covering panel (14) that covers the entire skeleton assembly can be formed, the left covering panel (20) of the middle section plastic part and the right covering panel (19) of the middle section plastic part are respectively connected to the left and right sides of the middle covering panel (16) of the middle section plastic part, and are respectively fixedly connected to the top of the upper table frame assembly (11) through a push-to-close latch (24); When the small table board of the car seat is in an extended state, the middle covering panel (16) of the middle section plastic part, the left covering panel (20) of the middle section plastic part and the right covering panel (19) of the middle section plastic part are all in contact and connected between the top surfaces of the first covering panel (12) and the second covering panel (13), and the top surfaces of the three are all flush with the top surface of the outer covering panel (14); when the small table board of the car seat is in a retracted state, the first covering panel (12) is in contact with the top surface of the second covering panel (13), and the middle covering panel (16) of the middle section plastic part, the left covering panel (20) of the middle section plastic part and the right covering panel (19) of the middle section plastic part can all sink, thereby being hidden inside the outer covering panel (14).

2. The retractable car seat table according to claim 1, characterized in that: Two first arc-shaped holes (25) are arranged on the left and right sides of the lower table frame assembly (10), and the first arc-shaped holes (25) extend counterclockwise from the front to the rear and above. Two second arc-shaped holes (26) are arranged on the left and right sides of the upper table frame assembly (11), and the second arc-shaped holes (26) extend counterclockwise from the front to the rear and below, and their ends extend horizontally backward to form a strip hole section. The front end of the middle covering panel (16) of the middle section plastic part is rotatably connected to the first transverse rotating shaft (17), and the first transverse rotating shaft (17) is rotatably and slidably connected between the two first arc-shaped holes (25). The rear end of the middle covering panel (16) of the middle section plastic part is rotatably connected to the second transverse rotating shaft (18), and the second transverse rotating shaft (18) is rotatably and slidably connected between the two second arc-shaped holes (26). When the small table of the car seat is in an extended state, the first transverse rotating shaft (17) is located at the end of the two first arc-shaped holes (25), and the second transverse rotating shaft (18) is located at the front end of the two second arc-shaped holes (26), so that the middle covering panel (16) of the middle section plastic part, the left covering panel (20) of the middle section plastic part and the right covering panel (19) of the middle section plastic part are all in contact and connected between the top surfaces of the first covering panel (12) and the second covering panel (13); pressing the left covering panel (20) of the middle section plastic part and the right covering panel (19) of the middle section plastic part can make them push-to-close. The upper table frame assembly (11) sinks under the action of the latch (24), and at this time, the upper table frame assembly (11) is pushed forward, which can force the first transverse rotating shaft (17) to slide forward along the first arc hole (25), and at the same time force the second transverse rotating shaft (18) to slide backward along the second arc hole (26), so that the middle covering panel (16) of the middle section plastic part automatically sinks. When the first transverse rotating shaft (17) slides to the front end of the first arc hole (25), the upper table frame assembly (11) is pushed forward continuously, which can force the second transverse rotating shaft (18) to slide along the strip hole section of the second arc hole (26), thereby realizing the top surface connection between the first covering panel (12) and the second covering panel (13), and then hiding the middle covering panel (16) of the middle section plastic part, the left covering panel (20) of the middle section plastic part, and the right covering panel (19) of the middle section plastic part in the outer covering panel (14).

3. The retractable car seat table according to claim 1, characterized in that: Two strip-shaped holes (2) extending forward and backward are arranged on the left and right sides of the lower table frame assembly (10), and the two ends of the upper table frame assembly (11) are respectively connected to the two strip-shaped holes (2) by sliding in cooperation with bolts (22) and nuts (21), and two bolts (22) are arranged at intervals in front and back at each end.

4. The retractable car seat tray according to claim 3, characterized in that: A rotating shaft mounting bracket (6) is welded to the lower table frame assembly (10), and the rotating shaft mounting bracket (6) is a U-shaped structure, and the two first arc-shaped holes (25) are respectively arranged on the two ends of the rotating shaft mounting bracket (6).

5. The retractable car seat table according to claim 4, characterized in that: The lower table frame assembly (10) comprises two lower table side panels (1) arranged opposite to each other on the left and right sides, the front ends of the two lower table side panels (1) are connected via a front end reinforcement bracket (4), the rear ends of the two lower table side panels (1) are connected via a rear end reinforcement bracket (5), and the middle portion of the front end reinforcement bracket (4) is connected to the middle portion of the rear end reinforcement bracket (5) via a middle section reinforcement bracket (3).

6. The retractable car seat tray according to claim 5, characterized in that: The rotating shaft mounting bracket (6) is welded to the middle front position of the middle section reinforcement bracket (3), and two shaped holes (2) are respectively arranged on the two lower table board side panels (1).

7. The retractable car seat tray according to claim 1, characterized in that: The upper table frame assembly (11) comprises two upper table side panels (7) arranged opposite to each other on the left and right sides, the front ends of the two upper table side panels (7) are connected via an intermediate reinforcing bracket (9), and the two second arc-shaped holes (26) are respectively arranged at the rear ends of the two upper table side panels (7).

8. The retractable car seat tray according to claim 7, characterized in that: The inner walls of the two upper table top side panels (7) are both provided with support ears (8), the left side covering panel (20) of the middle section plastic part is fixed to the left side support ear (8) by a push-to-close latch (24), and the right side covering panel (19) of the middle section plastic part is fixed to the right side support ear (8) by a push-to-close latch (24).

9. The retractable car seat tray according to claim 1, characterized in that: The first covering panel (12) and the second covering panel (13) are both composed of two upper and lower covering plates (15), and the upper and lower covering plates (15) are both clamped and fixed on the corresponding upper table frame assembly (11) or lower table frame assembly (10), wherein the covering plate (15) located on the lower side of the upper table frame assembly (11) and the covering plate (15) located on the lower side of the lower table frame assembly (10) have an overlapping area.

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