Automobile seat back small table board capable of being telescopically adjusted

Abstract

The utility model discloses an automobile seat back small table board capable of being telescopically adjusted, and relates to the technical field of automobile seats. The automobile table board is composed of the installation module, the connecting rod assembly and the table board body, the sliding part and the guide rail are arranged between the table board connecting rod base and the table board body, the table board connecting rod base and the table board body can move relatively, and therefore the unfolded table board can freely stretch out and draw back at different distances to adjust the distance between the table board and an automobile table and chair. Therefore, passengers in the back row can adjust the appropriate table board distance, meanwhile, adjustment meets the requirements for safety, stability and convenience, the small table board is arranged on automobiles with different specifications of back row spaces, and the passengers in the back row can comfortably use the table board.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a retractable and adjustable small table on the back of an automotive seat. Background Technology

[0002] Car seatback tray tables are a very practical in-car accessory. Installed behind the front seats, they not only provide passengers with extra work or dining space, but can also be used to place items such as food, mobile phones, and laptops. These tray tables are usually pre-installed at the factory or added as an aftermarket installation on the back of the front seats.

[0003] The most basic function of the tray table is that, when not in use, it folds down to a position parallel to the back of the car seat via a linkage assembly. When in use, it unfolds to a horizontal position facing the rear passengers. Once unfolded, the distance between the tray table and the rear passengers is usually fixed and preset to a comfortable distance.

[0004] However, the distance between the front and rear seats varies depending on the car model. Even with rear seat tray tables installed, the distance between the tray tables and rear passengers is often uncomfortable.

[0005] Korean patent publication number KR1020050095937A discloses a table installed behind the front seats of a car for rear passengers. It features a foldable tabletop with adjustable length in two positions, thus changing the tabletop's area and the distance between the tabletop and the passenger. However, with the increasing functionality of tabletops, small tables equipped with wireless charging are no longer suitable for folding designs. Furthermore, the current folding mechanism only offers two distance dimensions, which also fails to meet user needs.

[0006] It is evident that existing technologies have the problem that adding rear-seat tray tables results in an uncomfortable distance between rear passengers and is not easy to adjust. Utility Model Content

[0007] To address the problems existing in the prior art, the main objective of this utility model is to provide a retractable and adjustable car seat back table, which allows the table to be freely extended and retracted at different distances to adjust the distance between it and the car seats, so that rear passengers can comfortably use the table after adjustment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A retractable and adjustable car seat backrest table includes an installation module, a linkage assembly, and a table body. The table body is connected to the installation module via the linkage assembly. The table body also includes a sliding part and a guide rail. The table body has a table linkage base, the linkage assembly is hinged to the table linkage base, the sliding part is fixedly connected to the table linkage base, and the sliding part is relatively displaceable within the guide rail. The guide rail is fixedly connected to the table body.

[0010] Preferably, the sliding part includes a ball and a sliding base; the sliding base is provided with a retaining hole, and the ball is rotatably disposed in the retaining hole; the ball and the guide rail abut against each other to allow relative displacement between the sliding part and the guide rail.

[0011] Preferably, the sliding part further includes a brake block and an elastic element. The brake block is slidably disposed on the sliding base in the direction perpendicular to the guide rail. The two ends of the elastic element are respectively disposed between the brake block and the sliding part so as to push the brake block to abut against the inner wall of the guide rail.

[0012] Preferably, the guide rail is provided with a base groove that cooperates with the displacement of the sliding base, the two sides of the sliding base are provided with wedge-shaped protrusions, the two sides of the base groove are provided with wedge-shaped grooves, the wedge-shaped protrusions of the sliding base are in clearance fit with the wedge-shaped grooves, and the end of the brake block is configured with a wedge shape that cooperates with the wedge-shaped grooves.

[0013] Preferably, the wedge-shaped protrusion of the sliding base is provided with a retaining hole, the ball is rotatably disposed in the retaining hole, and the upper and lower sides of the wedge-shaped groove are provided with ball grooves, the ball abutting in the ball grooves.

[0014] Preferably, at least two balls are provided, and the balls are distributed in the front and rear along the guide rail direction of the sliding base; the brake block is provided at the bottom of the sliding base and is alternately provided between the balls on the front and rear sides.

[0015] Preferably, the tabletop body further includes a locking block and a limiting plate; the limiting plate is disposed on the tabletop body parallel to the guide rail and located on one side of the guide rail; the locking block is fixedly connected to the tabletop connecting rod base and located above the limiting plate; the locking block is elastically and integrally provided with a locking buckle on the side facing the limiting plate; the limiting plate is provided with a limiting groove to limit the displacement of the locking buckle, and a sliding groove to allow the locking buckle to slide.

[0016] Preferably, at least two limiting plates are provided, and the limiting plates are parallel to each other, and the width of the locking buckle is matched with the overall width of each limiting plate.

[0017] Preferably, the sliding groove of the limiting plate is provided in the middle, the limiting plate is provided with at least two limiting grooves on the side away from the installation module, and the limiting plate is provided with one limiting groove on the side closer to the installation module;

[0018] The tabletop body includes a base plate and a panel. The guide rail and the limiting plate are fixedly installed on the base plate. The base plate and the panel together form an inner cavity. The tabletop connecting rod base and the sliding part are located inside the inner cavity.

[0019] Preferably, the linkage assembly is provided in two sets; each set of the linkage assembly is provided with an upper linkage and a lower linkage, so that the tabletop body is displaced and retracted into the receiving groove and displaced and extended out of the receiving groove; the upper linkage of each set of the linkage assembly is hinged to the front side of the tabletop linkage base, and the lower linkage of each set of the linkage assembly is hinged to the rear side of the tabletop linkage base; each tabletop linkage base is provided with a sliding part, and guide rails are provided on both sides of the tabletop body, and each tabletop linkage base is displaceably connected to the guide rails on both sides of the tabletop body through its sliding part.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] (1) This utility model provides a sliding part and a guide rail between the tabletop connecting rod base and the tabletop body, so that the tabletop connecting rod base and the tabletop body can be relatively displaced, thereby realizing that the tabletop after unfolding can freely extend and retract at different distances to adjust the distance between it and the car seats. Thus, rear passengers can adjust the tabletop distance to a suitable level, so that the small tabletop can be configured in cars with different specifications of rear space, and rear passengers can use the tabletop comfortably.

[0022] (2) Furthermore, by setting a brake block on the sliding part of the ball bearing, the tabletop body maintains its telescopic position without being moved by any external force to the right, thus achieving adjustable installation and stability without affecting normal use. At the same time, when the tabletop body is subjected to an external force to the right, it can roll and slide, allowing for quick and effortless position adjustment.

[0023] (3) Furthermore, by incorporating a locking block and a limiting plate, this utility model requires a greater pushing or pulling force from the tabletop body to disengage the locking block from the limiting groove of the limiting plate, thus ensuring the safety of adjustment. With multiple limiting grooves on the limiting plate, it can be stably fixed in two positions: close to the front row of tables and chairs or far from the front row of seats. Within the sliding groove of the limiting plate, the tabletop body can extend and retract at any distance, and is positioned in conjunction with the braking block.

[0024] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1A schematic diagram of the overall three-dimensional structure of a retractable and adjustable car seat backrest table according to an embodiment of the present invention.

[0026] Figure 2 A partial three-dimensional structural diagram of a retractable and adjustable car seat back table according to an embodiment of the present invention.

[0027] Figure 3 A partial three-dimensional structural diagram of the guide rail of a retractable and adjustable car seat back table according to an embodiment of the present invention.

[0028] Figure 4 A three-dimensional structural diagram of the guide rail of a retractable and adjustable car seat backrest table according to an embodiment of the present invention, showing the dispersed parts.

[0029] Figure 5 One of the three-dimensional structural schematic diagrams of the sliding part of a retractable and adjustable car seat backrest table according to an embodiment of the present invention.

[0030] Figure 6 A second three-dimensional structural schematic diagram of the sliding part of a retractable and adjustable car seat backrest table according to an embodiment of the present invention.

[0031] Figure 7 A schematic diagram of the first telescopic position of the adjustable car seat back table according to an embodiment of the present invention.

[0032] Figure 8 A schematic diagram of the second telescopic position table fixed step of a telescopic adjustable car seat back table according to an embodiment of the present invention.

[0033] Figure 9 A schematic diagram of the fixed three-dimensional structure of the third telescopic position table of a telescopic and adjustable car seat back table according to an embodiment of the present invention.

[0034] Reference numerals: 10, backplate body; 20, linkage assembly; 21, upper linkage; 22, lower linkage; 30, tabletop body; 31, panel; 32, base plate; 33, tabletop linkage base; 40, sliding part; 41, sliding base; 42, ball bearing; 43, brake block; 44, elastic element; 50, guide rail; 51, base groove; 52, ball groove; 53, wedge groove; 60, locking block; 61, locking buckle; 62, limiting upright plate. Detailed Implementation

[0035] To better illustrate the purpose, technical solution, and advantages of this utility model, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] like Figures 1 to 9 The image shown is a retractable and adjustable car seat back tray according to an embodiment of the present invention. (Reference) Figure 1 The car seat backrest table includes a mounting module, a linkage assembly 20, and a table body 30. The mounting module is used to fix it to the car seat back and provides space for the table body 30. In this embodiment, the mounting module is configured as the backrest body 10; in other embodiments, it can be a simple mounting bracket. The backrest body 10 can be configured in the shape of a car seat backrest, making the car seat more aesthetically pleasing, and can also accommodate the table body 30 in conjunction with the linkage assembly 20. The table body 30 provides a place for the user to put items and is connected to the backrest body 10 via the linkage assembly 20. To make the table body 30 more robust and stable, the linkage assembly 20 is typically configured in two sets, each set having two links: an upper link 21 and a lower link 22. The table body 30 includes a panel 31 and a base 32, with a table linkage base 33 on each side of the base 32. Two sets of linkage assemblies 20 are hinged to the tabletop linkage bases 33 on both sides. The upper linkage 21 and the lower linkage 22 cooperate with each other. When the upper linkage 21 and the lower linkage 22 swing to the lower limit position, the tabletop body 30 is displaced and retracted into the receiving groove. When the upper linkage 21 and the lower linkage 22 swing to the upper limit position, the upper linkage 21 and the lower linkage 22 abut against each other, and at the same time, the tabletop body 30 is displaced and unfolded outside the receiving groove, maintaining a horizontal state facing the passenger.

[0037] To achieve the technical objective of this utility model, specifically, each tabletop linkage base 33 has a sliding part 40 fixedly connected to its bottom, and guide rails 50 are fixedly connected to both sides of the bottom plate 32 of the tabletop body 30. The tabletop linkage base 33 is displaceably installed within the guide rails 50 via the sliding part 40. When the upper linkage 21 and lower linkage 22 swing to their upper limit position, the tabletop body 30 unfolds into a horizontal state. The upper linkage 21, lower linkage 22, and tabletop linkage base 33 can maintain their horizontal unfolded posture, while the tabletop body 30 and guide rails 50 can be moved by the user towards or away from the front seats, thereby correspondingly reducing or increasing the distance between the tabletop body 30 and the rear passengers.

[0038] Therefore, in this utility model, the tabletop connecting rod base 33 and the tabletop body 30 can slide relative to each other, so that the unfolded tabletop can freely extend and retract at different distances to adjust the distance between it and the car seats. Thus, rear passengers can comfortably use the tabletop in different sizes of car rear space by adjusting the tabletop distance appropriately.

[0039] refer to Figure 5 and Figure 6 To ensure smooth displacement between the tabletop connecting rod base 33 and the tabletop body 30, in this embodiment, the sliding part 40 specifically includes a ball bearing 42 and a sliding base 41. The sliding base 41 is provided with a retaining hole, and the ball bearing 42 is rotatably disposed within the retaining hole. The ball bearing 42 abuts against the guide rail 50 to allow relative displacement between the sliding part 40 and the guide rail 50.

[0040] refer to Figures 3 to 6 In this embodiment, the sliding part 40 further includes a brake block 43 and an elastic member 44. The brake block 43 is slidably disposed on the sliding base 41 in the vertical direction relative to the guide rail 50. The two ends of the elastic member 44 are respectively disposed between the sliding part 40 of the brake block 43, so as to push the brake block 43 to abut against the inner wall of the guide rail 50.

[0041] It is worth noting that, such as Figure 3 As shown, in the absence of external force, the brake block 43, under the elastic force of the elastic member 44, will abut against the inner right wall of the guide rail 50. Simultaneously, the elastic force of the elastic member 44 will also push the sliding base 41 against the inner left wall of the guide rail 50. The increased overall width of the sliding base 41 causes both the brake block 43 and the sliding base 41 to simultaneously abut against the guide rail 50, generating significant friction between the sliding part 40 and the guide rail 50, thus causing the rolling displacement of the ball 42 to fail.

[0042] like Figure 3 As shown, when a rightward thrust is applied to the table body 30, the brake block 43 moves inward toward the sliding base 41, reducing the overall width of the sliding base 41 and maintaining a gap between the sliding base 41 and the guide rail 50. This reduces the friction between the sliding part 40 and the guide rail 50, allowing the sliding part 40 to roll on the guide rail 50 via the ball bearing 42.

[0043] Therefore, this utility model, by setting a brake block 43 on the sliding part 40 of the ball bearing 42, enables the table body 30 to maintain its telescopic position without external force to the right, making it difficult to move and achieving telescopic adjustment of any distance within its range. At the same time, when the table body 30 is subjected to external force to the right, it can roll and slide, allowing for quick and effortless position adjustment.

[0044] Specifically, in this embodiment, the guide rail 50 is provided with a base groove 51 that matches the displacement of the sliding base 41, achieving unobstructed or contactless displacement. The sliding base 41 has wedge-shaped protrusions on both sides, and the base groove 51 has wedge-shaped grooves 53 on both sides. The wedge-shaped protrusions of the sliding base 41 are clearance-fitted with the wedge-shaped grooves 53, and the end of the brake block 43 is configured in a wedge shape to mate with the wedge-shaped grooves 53. In the absence of external force, under the action of the brake block 43, the wedge-shaped protrusions and wedge-shaped grooves 53 will abut against each other, generating significant friction. Under the action of external force, a clearance distance is maintained between the wedge-shaped protrusions on both sides and the wedge-shaped grooves on both sides, with only the brake block 43 contacting the guide rail 50, greatly reducing friction and allowing sliding with the aid of the ball bearings 42.

[0045] refer to Figure 5 and Figure 6 Specifically, in this embodiment, the wedge-shaped protrusion of the sliding base 41 is provided with a retaining hole, and the ball 42 is rotatably disposed within the retaining hole. The upper and lower sides of the wedge-shaped groove 53 are provided with ball grooves 52, and the ball 42 abuts against the ball grooves 52. The ball 42 is disposed on the wedge-shaped protrusion, extending beyond the retaining hole and contacting the ball groove 52. The retaining hole holds the ball 42 in the front-to-back direction, and a certain gap can be provided between the retaining hole and the ball 42 in the left-to-right direction, allowing the sliding base 41 to move in the left-to-right direction, thus achieving an automatic braking function. The ball grooves 52 on the upper and lower sides allow the ball 42 to withstand downward pressure or upward thrust, thereby ensuring that the table body 30 only moves along the guide rail 50 direction.

[0046] refer to Figure 5 and Figure 6 Specifically, in this embodiment, there are four ball bearings 42, with two ball bearings 42 distributed front and back along the guide rail 50 on the sliding base 41. Braking blocks 43 are located at the bottom of the sliding base 41 and are alternately arranged between the front and back ball bearings 42. The brake blocks 43 have ball bearings 42 on both sides, facilitating the stability of the displacement of the sliding part 40 after the brake is released. Each tabletop connecting rod base 33 is provided with two sliding parts 40, thus ensuring the stability of the tabletop body 30 under downward or upward pressure.

[0047] refer to Figure 2 and reference Figures 7 to 9Specifically, in this embodiment, the tabletop body 30 is further provided with a locking block 60 and a limiting plate 62. The limiting plate 62 is disposed on the tabletop body 30 parallel to the guide rail 50 and located on one side of the guide rail 50. The locking block 60 is fixedly connected to the tabletop connecting rod base 33 and located above the limiting plate 62. A locking buckle 61 is elastically and integrally connected to the side of the locking block 60 facing the limiting plate 62. The limiting plate 62 is provided with a limiting groove to limit the displacement of the locking buckle 61 and a sliding groove to allow the locking buckle 61 to slide. The sliding groove of the limiting plate 62 is located in the middle. The limiting plate 62 has at least two limiting grooves on the side away from the mounting module and one limiting groove on the side closer to the mounting module.

[0048] It is worth noting that, in the initial state, the locking block 60 is displaced above the first limiting groove on the side away from the mounting module, and the locking buckle 61 is fixed in the limiting groove. When it is necessary to reduce the distance of the table body 30, the table body 30 is pushed, causing the locking block 60 to displace above the second limiting groove on the side away from the mounting module, and the locking buckle 61 is fixed in the limiting groove, thus bringing the table body 30 closer to the front car seat. When it is necessary to increase the distance of the table body 30, the table body 30 is pushed, causing the locking block 60 to displace above the slide rail. The locking buckle 61 cannot be fixed to the slide rail. Under the action of the braking block 43, if there is no external force to the right, the table body 30 can maintain any position on the slide rail. If there is an external force to the right, the table body 30 can change its position on the slide rail by rolling. When it is necessary to bring the table body 30 as close to the passenger as possible, the table body 30 is moved...

[0049] Therefore, it can be seen that in this utility model, it is necessary to apply a force perpendicular to the extension direction and a force parallel to the extension direction at the same time. The extension adjustment operation is ingenious and can achieve safe and stable extension adjustment of the small table.

[0050] refer to Figure 2 In this embodiment, at least two limiting plates 62 are provided, and each limiting plate 62 is parallel to the other. The width of the locking buckle 61 is matched with the overall width of each limiting plate 62, thereby improving the overall strength of the locking block 60 and the limiting plate 62.

[0051] refer to Figure 1 and Figure 2 In this embodiment, the table body 30 includes a base plate 32 and a panel 31. The guide rail 50 and the limiting upright plate 62 are fixedly disposed on the base plate 32. The base plate 32 and the panel 31 enclose an inner cavity. The table connecting rod base 33 and the sliding part 40 are located inside the inner cavity, which makes it more aesthetically pleasing.

[0052] The above embodiments mainly describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A retractable and adjustable car seat backrest tray, comprising a mounting module, a linkage assembly (20), and a tray body (30), wherein the tray body (30) is connected to the mounting module via the linkage assembly (20), characterized in that, It also includes a sliding part (40) and a guide rail (50). The table body (30) is provided with a table connecting rod base (33). The connecting rod assembly (20) is hinged to the table connecting rod base (33). The sliding part (40) is fixedly connected to the table connecting rod base (33). The sliding part (40) is disposed within the guide rail (50) with relative displacement. The guide rail (50) is fixedly connected to the table body (30).

2. The retractable and adjustable car seat backrest table according to claim 1, characterized in that, The sliding part (40) includes a ball (42) and a sliding base (41); the sliding base (41) is provided with a retaining hole, and the ball (42) is rotatably disposed in the retaining hole; the ball (42) and the guide rail (50) abut against each other to make the sliding part (40) and the guide rail (50) move relative to each other.

3. The retractable and adjustable car seat backrest table according to claim 2, characterized in that, The sliding part (40) further includes a brake block (43) and an elastic member (44). The brake block (43) is slidably disposed on the sliding base (41) in the vertical direction relative to the guide rail (50). The two ends of the elastic member (44) are respectively disposed between the brake block (43) and the sliding part (40) so as to push the brake block (43) to abut against the inner wall of the guide rail (50).

4. The retractable and adjustable car seat backrest table according to claim 3, characterized in that, The guide rail (50) is provided with a base groove (51) that cooperates with the displacement of the sliding base (41). The sliding base (41) has wedge-shaped protrusions on both sides, and the base groove (51) has wedge-shaped grooves (53) on both sides. The wedge-shaped protrusions of the sliding base (41) are in clearance fit with the wedge-shaped grooves (53). The end of the brake block (43) is configured with a wedge shape that cooperates with the wedge-shaped grooves (53).

5. A retractable and adjustable car seat backrest table according to claim 4, characterized in that, The sliding base (41) has a wedge-shaped protrusion with a retaining hole, and the ball (42) is rotatably disposed in the retaining hole. The upper and lower sides of the wedge-shaped groove (53) are provided with ball grooves (52), and the ball (42) abuts against the ball grooves (52).

6. A retractable and adjustable car seat backrest tray according to claim 3, characterized in that, At least two balls (42) are provided, and the balls (42) are distributed in the front and back along the guide rail (50) of the sliding base (41); the brake block (43) is provided at the bottom of the sliding base (41) and is arranged alternately between the balls (42) on the front and back sides.

7. A retractable and adjustable car seat backrest tray according to claim 1, characterized in that, The tabletop body also includes a locking block (60) and a limiting plate (62); the limiting plate (62) is arranged on the tabletop body (30) parallel to the guide rail (50) and located on one side of the guide rail (50); the locking block (60) is fixedly connected to the tabletop connecting rod base (33) and located above the limiting plate (62); the locking block (60) is elastically and integrally provided with a locking buckle (61) on the side facing the limiting plate (62); the limiting plate (62) is provided with a limiting groove to limit the displacement of the locking buckle (61) and a sliding groove to allow the locking buckle (61) to slide.

8. A retractable and adjustable car seat backrest table according to claim 7, characterized in that, At least two limiting plates (62) are provided, and each limiting plate (62) is parallel to the other. The width of the locking buckle (61) is matched with the overall width of each limiting plate (62).

9. A retractable and adjustable car seat backrest table according to claim 7, characterized in that, The sliding groove of the limiting plate (62) is provided in the middle, and the limiting plate (62) has at least two limiting grooves on the side away from the installation module, and one limiting groove on the side of the limiting plate (62) close to the installation module. The table body (30) includes a base plate (32) and a panel (31). The guide rail (50) and the limiting plate (62) are fixedly installed on the base plate (32). The base plate (32) and the panel (31) enclose an inner cavity. The table connecting rod base (33) and the sliding part (40) are located inside the inner cavity.

10. A retractable and adjustable car seat backrest tray according to claim 1, characterized in that, The linkage assembly (20) is provided in two sets; each set of the linkage assembly (20) is provided with an upper linkage (21) and a lower linkage (22), so that the table body (30) is displaced and retracted into the receiving groove and the table body (30) is displaced and unfolded outside the receiving groove; the upper linkage (21) of each set of the linkage assembly (20) is hinged to the front side of the table linkage base (33), and the lower linkage (22) of each set of the linkage assembly (20) is hinged to the rear side of the table linkage base (33); each table linkage base (33) is provided with two sliding parts (40), and guide rails (50) are provided on both sides of the table body (30), and each table linkage base (33) is movably connected to the guide rails (50) on both sides of the table body (30) through its sliding parts (40).

Images