Small electric table board for rear-row seats and seat armrests

Abstract

The utility model provides a rear-row seat electric small table board and a seat armrest, and relates to the technical field of automobile small table board equipment, the rear-row seat electric small table board comprises a small table board assembly, a seat armrest base, an electric translation assembly and a multi-connecting-rod lifting assembly; the multi-connecting-rod lifting assembly is installed on the electric translation assembly, and the small table board assembly is installed on the multi-connecting-rod lifting assembly. The multi-connecting-rod lifting assembly comprises a follow-up base, a handrail cover plate, a driving connecting rod and a driven connecting rod, the follow-up base is fixedly installed on the electric translation assembly, and an avoiding groove is formed in the handrail cover plate; one ends of the driving connecting rods and the driven connecting rods are pivoted to the follow-up base, the other ends of the driving connecting rods and the driven connecting rods are pivoted to the small table plate assembly, a synchronous rod is arranged between the two driving connecting rods, and a torsional spring is arranged between the synchronous rod and the electric translation assembly. And the seat armrest comprises a rear-row seat electric small table plate. The technical effect that the rear-row small table board is convenient to use is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile small table equipment, in particular to an electric small table and seat armrests for rear seats. Background Art

[0002] In recent years, with the continuous development of automobile technology and the improvement of living standards, people's requirements for automobiles have gradually increased. For passengers, seats are required to have additional storage and desk functions for light office work. Now vehicles have added small tables on the back of the front seats to meet these functional needs.

[0003] However, the table is placed on the back of the front seat, which makes the spatial position of the table greatly affected by the front seat, and there is a third-party constraint on human-computer interaction. Moreover, the table is too far away from the rear passengers, and the back needs to be bent forward when using it, which affects the comfort of use. Utility Model Content

[0004] The purpose of the utility model is to provide an electric small table for rear seats and a seat armrest, so as to alleviate the technical problem of the inconvenience of using the small table for rear seats in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a rear seat electric tray table, comprising a tray table assembly, a seat armrest base, an electric translation assembly, and a multi-link lifting assembly;

[0006] The electric translation assembly is mounted on the seat armrest base, the multi-link lifting assembly is mounted on the electric translation assembly, and the small table assembly is mounted on the multi-link lifting assembly;

[0007] The multi-link lifting assembly includes a follower base, an armrest cover, an active link and a driven link, the follower base is fixedly mounted on the electric translation assembly, the armrest cover is arranged on the follower base, and an avoidance groove is provided on the armrest cover;

[0008] One end of the active connecting rod and the driven connecting rod is pivotally connected to the follower base, and the other end is pivotally connected to the small table assembly. A synchronization rod is provided between the two active connecting rods, and a torsion spring is provided between the synchronization rod and the electric translation assembly to enable the active connecting rod to have a swinging tendency;

[0009] A rotation-stopping plate is provided in the seat armrest base, and the rotation-stopping plate is located below the follower base. The end of the active connecting rod away from the small table assembly has a limiting lever adapted to the rotation-stopping plate.

[0010] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein the multi-link lifting assembly further includes an auxiliary pop-up rod;

[0011] The follower base is provided with a receiving groove, and the inner walls of both sides of the receiving groove are provided with limited slideways. Both sides of the auxiliary pop-up rod are provided with outer sliders, and the outer sliders are slidably arranged in the limited slideways to limit the sliding range of the auxiliary pop-up rod;

[0012] The auxiliary pop-up rod is provided below the active connecting rod and the driven connecting rod.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a return spring is provided between the auxiliary pop-up rod and the accommodating groove.

[0014] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein the above-mentioned small table assembly includes a table top and a rotating member;

[0015] The rotating member is fixedly mounted on the bottom of the desktop panel;

[0016] Both the driving link and the driven link are connected to the rotating member.

[0017] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation of the first aspect, wherein a linkage bracket is fixedly installed between the two driven connecting rods, a linkage rod is pivotally connected to the linkage bracket, and a linkage slider is pivotally connected to one end of the linkage rod away from the linkage bracket;

[0018] A rotating transition plate is provided between the desktop panel and the rotating member, the rotating transition plate is rotatably connected to the rotating member, and a linkage sliding groove adapted to the linkage slider is provided at the bottom of the rotating transition plate;

[0019] A rotation-stop block is eccentrically arranged at the bottom of the rotating member, and a rotation-stop groove adapted to the rotation-stop block is provided on the linkage sliding block.

[0020] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a rotation-stop seat is provided on the above-mentioned follower base, and a rotation-stop groove adapted to the rotation-stop seat is provided on the limiting lever.

[0021] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein the electric translation assembly includes a motor, a screw and a screw nut;

[0022] The motor is fixed in the seat armrest base, the screw rod is in transmission connection with the motor, the screw rod nut is installed on the follower base, and the screw rod nut is in transmission connection with the screw rod.

[0023] With reference to the first aspect, the utility model embodiment provides a possible implementation of the first aspect, wherein the electrically-driven translation assembly further comprises a translation guide rod, and the slave base is provided with a translation sliding seat matched with the translation guide rod.

[0024] With reference to the first aspect, the utility model embodiment provides a possible implementation of the first aspect, wherein the bottom of the handrail cover plate is provided with a guide sliding block, and the seat handrail base is provided with a guide sliding groove matched with the guide sliding block.

[0025] The second aspect, the utility model provides a seat handrail, including the rear seat electrically-driven small table plate.

[0026] Beneficial effects:

[0027] The utility model provides a rear seat electrically-driven small table plate, including small table plate assembly, seat handrail base, electrically-driven translation assembly and multi-connecting rod lifting assembly, electrically-driven translation assembly installs on seat handrail base, multi-connecting rod lifting assembly installs on electrically-driven translation assembly, and small table plate assembly installs on multi-connecting rod lifting assembly, multi-connecting rod lifting assembly includes slave base, handrail cover plate, driving connecting rod and driven connecting rod, and slave base is fixedly installed on electrically-driven translation assembly, and the handrail cover plate is set up on slave base, and the handrail cover plate is set up with the avoiding groove, one end of driving connecting rod and driven connecting rod is pivoted on slave base, and the other end is pivoted with small table plate assembly, and the synchronous rod is set up between the two driving connecting rods, and the torsion spring is set up between the synchronous rod and electrically-driven translation assembly, to make driving connecting rod have the tendency of swing, the rotation limiting plate is set up in seat handrail base, and the rotation limiting plate is located below slave base, and the end of driving connecting rod away from small table plate assembly has the limiting stopper matched with the rotation limiting plate.

[0028] Specifically, when the user uses, the user triggers electrically-driven translation assembly through control key, and electrically-driven translation assembly starts to drive slave base to translate, so that handrail cover plate moves outward, and at the same time, the driving connecting rod and driven connecting rod of multi-connecting rod lifting assembly move outward along with slave base, and in the moving process, the limiting stopper on driving connecting rod can be away from rotation limiting plate, so that driving connecting rod rotates and swings under the power of torsion spring, so that small table plate assembly arranged on driving connecting rod and driven connecting rod moves outward along with lifting, to facilitate the user to use small table plate assembly.

[0029] The utility model embodiment provides a seat handrail, including rear seat electrically-driven small table plate. The seat handrail has the advantages of the prior art, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of an embodiment of the present invention showing a rear seat electric tray table that is not opened;

[0032] Figure 2 A schematic diagram of an embodiment of the present invention showing the rear seat electric tray table opened;

[0033] Figure 3 A schematic diagram of the rear seat electric tray table provided by an embodiment of the present invention being rotated toward the driver's side;

[0034] Figure 4 A schematic diagram of the rear seat electric tray table provided by an embodiment of the present invention being rotated toward the passenger side;

[0035] Figure 5 A partial schematic diagram of a top view of a rear seat electric tray table provided in an embodiment of the present invention;

[0036] Figure 6 for Figure 5 A-A cross-sectional view;

[0037] Figure 7 for Figure 5 Sectional view of line B-B;

[0038] Figure 8 A schematic diagram of the interior of a rear seat electric tray table provided in an embodiment of the present invention;

[0039] Figure 9 A schematic diagram of the internal structure of the rear seat electric tray table provided by an embodiment of the present invention;

[0040] Figure 10 A schematic diagram of the internal structure of the rear seat electric tray table provided in an embodiment of the present invention;

[0041] Figure 11 A schematic diagram of the structure of the electric translation assembly and the multi-link lifting assembly in the rear seat electric tray table provided by an embodiment of the present invention;

[0042] Figure 12 A schematic diagram showing the connection between the multi-link lifting assembly and the rotating transition plate in the rear seat electric tray table provided by an embodiment of the present invention;

[0043] Figure 13 A schematic diagram of a movable base in a rear seat electric tray table provided by an embodiment of the present invention;

[0044] Figure 14 A schematic diagram of the armrest cover in the rear seat electric tray table provided in an embodiment of the present invention.

[0045] icon:

[0046] 100 - small table assembly; 110 - table top; 120 - rotating member; 121 - anti-rotation block; 130 - rotating transition plate; 131 - linkage slide;

[0047] 200 - seat armrest base; 210 - anti-rotation limit plate; 220 - guide groove;

[0048] 300 - Electric translation assembly; 310 - Motor; 320 - Screw; 330 - Screw nut; 340 - Translation guide rod;

[0049] 400 - Multi-link lifting assembly; 410 - Follow-up base; 411 - Accommodation groove; 412 - Limiting slide; 413 - Translation slide; 414 - Anti-rotation block seat; 420 - Armrest cover; 421 - Avoidance groove; 422 - Guide slider; 430 - Active connecting rod; 431 - Synchronizing rod; 432 - Torsion spring; 433 - Limiting block rod; 434 - Anti-rotation slot; 440 - Driven connecting rod; 450 - Auxiliary pop-up rod; 451 - Outer slider; 452 - Return spring; 461 - Linkage bracket; 462 - Linkage rod; 463 - Linkage slider; 464 - Anti-rotation slot. DETAILED DESCRIPTION

[0050] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0054] The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

[0055] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14As shown, this embodiment provides a rear seat electric small table, including a small table assembly 100, a seat armrest base 200, an electric translation assembly 300 and a multi-link lifting assembly 400; the electric translation assembly 300 is mounted on the seat armrest base 200, the multi-link lifting assembly 400 is mounted on the electric translation assembly 300, and the small table assembly 100 is mounted on the multi-link lifting assembly 400; the multi-link lifting assembly 400 includes a follower base 410, an armrest cover 420, an active link 430 and a driven link 440, the follower base 410 is fixedly mounted on the electric translation assembly 300, and the armrest cover 420 is arranged on the follower base 410. 0, an avoidance groove 421 is provided on the armrest cover 420; one end of the active connecting rod 430 and the driven connecting rod 440 are pivotally connected to the follower base 410, and the other end is pivotally connected to the small table assembly 100, a synchronization rod 431 is provided between the two active connecting rods 430, and a torsion spring 432 is provided between the synchronization rod 431 and the electric translation assembly 300, so that the active connecting rod 430 has a tendency to swing; a rotation stop plate 210 is provided in the seat armrest base 200, and the rotation stop plate 210 is located below the follower base 410, and the end of the active connecting rod 430 away from the small table assembly 100 has a limit stop rod 433 adapted to the rotation stop plate 210.

[0056] Specifically, when the user is in use, the user triggers the electric translation assembly 300 through the control key, and the electric translation assembly 300 starts to drive the follower base 410 to translate, thereby causing the armrest cover 420 to move outward. At the same time, the active link 430 and the driven link 440 of the multi-link lifting assembly 400 both move outward with the follower base 410, and during the movement, the limit stop rod 433 on the active link 430 can move away from the anti-rotation limit plate 210, so that the active link 430 rotates and swings under the power of the torsion spring 432, thereby lifting the small table assembly 100 set on both the active link 430 and the driven link 440 and moving it outward so that the user can use the small table assembly 100.

[0057] Among them, the user can control the operation of the electric translation component 300 by pressing keys, or by touching buttons, etc. Those skilled in the art can decide the triggering method of the electric translation component 300 by themselves, as long as the electric translation component 300 can be controlled.

[0058] The armrest cover 420 is provided with an escape groove 421 , so that both the active link 430 and the driven link 440 can extend from the escape groove 421 and connect with the rotating member 120 at the bottom of the desktop panel 110 .

[0059] See also Figure 1 - Figure 14As shown, in the optional solution of the embodiment, the multi-link lifting assembly 400 further comprises an auxiliary pop-up rod 450; the follow-up base 410 is provided with a containing groove 411, the two side inner walls of the containing groove 411 are provided with limiting sliding grooves 412, the two sides of the auxiliary pop-up rod 450 are provided with outer sliding blocks 451, the outer sliding blocks 451 are slidingly arranged in the limiting sliding grooves 412, and the limiting sliding grooves 412 are used for limiting the sliding range of the auxiliary pop-up rod 450; the lower sides of the driving link 430 and the driven link 440 are provided with the auxiliary pop-up rod 450.

[0060] The two sides of the auxiliary pop-up rod 450 are provided with the outer sliding blocks 451, the outer sliding blocks 451 are slidingly arranged in the limiting sliding grooves 412, and the entrances of the limiting sliding grooves 412 are at the bottom, so that the auxiliary pop-up rod 450 cannot be separated from the containing groove 411 of the follow-up base 410 from the upper part. When the driving link 430 and the driven link 440 are swung upward, the auxiliary pop-up rod 450 is lifted upward by the reset spring 452, so that the auxiliary pop-up rod 450 can not only assist the driving link 430 and the driven link 440 to be lifted, but also can shield the containing groove 411.

[0061] The auxiliary pop-up rod 450 and the containing groove 411 are provided with the reset spring 452.

[0062] Referring to Figure 1 - Figure 14 As shown, in the optional solution of the embodiment, the small table plate assembly 100 comprises a table top plate 110 and a rotating piece 120; the rotating piece 120 is fixedly installed at the bottom of the table top plate 110; the driving link 430 and the driven link 440 are both connected with the rotating piece 120.

[0063] The rotating piece 120 has a damping function, so that the table top plate 110 is stable.

[0064] Referring to Figure 1 - Figure 14 As shown, in the optional solution of the embodiment, two driven links 440 are fixedly installed with a linkage support 461, the linkage support 461 is pivotally connected with a linkage rod 462, one end of the linkage rod 462 away from the linkage support 461 is pivotally connected with a linkage sliding block 463; the table top plate 110 and the rotating piece 120 are provided with a rotating transition plate 130, the rotating transition plate 130 is rotatably connected with the rotating piece 120, the bottom of the rotating transition plate 130 is provided with a linkage sliding groove 131 matched with the linkage sliding block 463; the bottom of the rotating piece 120 is eccentrically provided with a rotation stopping block 121, the linkage sliding block 463 is provided with a rotation stopping groove 464 matched with the rotation stopping block 121.

[0065] The outer side fixing plate of the rotating member 120 is fixedly installed on the rotating transition plate 130, the bottom of the rotating transition plate 130 is pivotally connected with the driving link 430 and the driven link 440 of the multi-link lifting assembly 400, so that the driving link 430 and the driven link 440 support the rotating transition plate 130. The middle rotating part of the rotating member 120 is connected with the tabletop plate 110, so that the tabletop plate 110 can rotate relative to the rotating transition plate 130.

[0066] Referring to Figure 1 - Figure 14 As shown in the optional scheme of the embodiment, the follow-up base 410 is provided with a rotation stopping block 414, and the limiting stopper 433 is provided with a rotation stopping slot 434 matched with the rotation stopping block 414.

[0067] Referring to Figure 1 - Figure 14 As shown in the optional scheme of the embodiment, the electric translation assembly 300 includes a motor 310, a lead screw 320 and a lead screw nut 330. The motor 310 is fixed in the seat armrest base 200, the lead screw 320 is in transmission connection with the motor 310, and the lead screw nut 330 is installed on the follow-up base 410 and in transmission connection with the lead screw 320.

[0068] The electric translation assembly 300 further includes a translation guide rod 340, and the follow-up base 410 is provided with a translation sliding seat 413 matched with the translation guide rod 340.

[0069] The bottom of the armrest cover plate 420 is provided with a guide sliding block 422, and the seat armrest base 200 is provided with a guide sliding groove 220 matched with the guide sliding block 422. Through the arrangement of the guide sliding block 422 and the guide sliding groove 220, the armrest cover plate 420 can move synchronously and stably with the follow-up base 410, so that the armrest cover plate 420 can shield the seat armrest base 200.

[0070] Referring to Figure 1 - Figure 14As shown, specifically, when the user is in use, the user can trigger the motor 310 through the control key, and the motor 310 drives the screw rod 320 to rotate, and the screw rod 320 drives the screw nut 330 to move, and the screw nut 330 drives the follower base 410 to translate along the translation guide rod 340. During the translation process, the limit stop rod 433 on the active link 430 gradually moves away from the anti-rotation limit plate 210 in the seat armrest base 200, so that the active link 430 can gradually rotate under the action of the torsion spring 432. The rotation of the active link 430 can synchronously lift the rotating part 120, and the rotating part 120 drives the small table board assembly 100 to lift. At the same time, the auxiliary pop-up rod 450 located in the receiving groove 411 of the follower base 410 is moved upward by the return spring 452, so that The auxiliary pop-up rod 450 drives the active link 430 and the driven link 440 to lift upward, thereby further ensuring that the small table panel assembly 100 can be automatically lifted; when the limit stop rod 433 is completely free from the restriction of the anti-rotation limit plate 210, the active link 430 and the driven link 440 can be in a vertical state. At this time, the anti-rotation slot 434 on the limit stop rod 433 abuts against the anti-rotation block seat 414 on the follower base 410, so that the active link 430 will not continue to rotate under the action of the torsion spring 432. At this time, the desktop panel 110 is fully extended out, and the desktop panel 110 is in the highest lifting position. At this time, the length direction of the desktop panel 110 points to the front seat. At this time, the user can rotate the desktop panel 110 to the left and right sides for user use.

[0071] It should be pointed out that when the multi-link lifting assembly 400 drives the desktop panel 110 to lift, the driven link 440 swings upward, and the driven link 440 can drive the linkage bracket 461 fixed on the driven link 440 to rotate. The rotation of the linkage bracket 461 can pull the linkage rod 462 to move, thereby driving the linkage slider 463 to slide in the linkage slide groove 131, so that the linkage slider 463 is disengaged from the stop block 121 at the bottom of the rotating member 120, thereby releasing the restriction on the rotating member 120, allowing the rotating member 120 to rotate, thereby allowing the user to rotate the desktop panel 110.

[0072] It should be noted that when the unfolded small table assembly 100 is folded, the user triggers the control button set on the seat armrest base 200, so that the electric translation assembly 300 works to drive the small table assembly 100 to retract. During the retraction process, the user can not rotate the horizontal small table assembly 100. When the multi-link lifting assembly 400 and the electric translation assembly 300 retract and swing, the driven link 440 drives the linkage bracket 461 to rotate, the linkage bracket 461 drives the linkage rod 462 to move, and the linkage rod 462 drives the linkage slider 463 to slide in the linkage slide groove 131 of the rotating transition plate 130. During the sliding process of the linkage slider 463, the linkage slider 463 can push the anti-rotation block 121 eccentrically set at the bottom of the rotating part 120 to move. The action of the linkage slider 463 on the anti-rotation block 121 can cause the rotating part 120 to shift gears, thereby resetting the horizontal desktop panel 110, and finally the anti-rotation block 121 will move into the anti-rotation groove 464 on the linkage slider 463.

[0073] It should be pointed out that the small table in the seat armrest with a small table provided in this embodiment is arranged on the seat armrest of the car seat. The seat armrest can be rotated and opened relative to the rear seat, and can be retracted into the seat back when not in use, so that the rear seat can accommodate three passengers. When the passenger needs to use the small table, the seat armrest with a small table provided in this embodiment can be unfolded. When the rear table is opened, it is always in a horizontal state and is not affected by changes in the backrest angle, and does not affect its use.

[0074] This embodiment provides a seat armrest, including an electric small table for the rear seat.

[0075] Specifically, the advantages of the electric small table for the rear seats provided by this embodiment compared with the prior art are not described here.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rear seat electric table, characterized in that: include: A small table assembly (100), a seat armrest base (200), an electric translation assembly (300) and a multi-link lifting assembly (400); The electric translation assembly (300) is mounted on the chair armrest base (200), the multi-link lifting assembly (400) is mounted on the electric translation assembly (300), and the small table assembly (100) is mounted on the multi-link lifting assembly (400); The multi-link lifting assembly (400) comprises a follower base (410), an armrest cover (420), an active link (430) and a driven link (440); the follower base (410) is fixedly mounted on the electric translation assembly (300); the armrest cover (420) is arranged on the follower base (410); and an avoidance groove (421) is provided on the armrest cover (420); One end of the active connecting rod (430) and the driven connecting rod (440) are pivotally connected to the follower base (410), and the other end is pivotally connected to the small table assembly (100). A synchronization rod (431) is provided between the two active connecting rods (430), and a torsion spring (432) is provided between the synchronization rod (431) and the electric translation assembly (300) so that the active connecting rod (430) has a tendency to swing. A rotation-stopping plate (210) is provided in the seat armrest base (200), and the rotation-stopping plate (210) is located below the follower base (410). The end of the active connecting rod (430) away from the small table assembly (100) has a limiting lever (433) adapted to the rotation-stopping plate (210).

2. The rear seat electric tray table according to claim 1, characterized in that: The multi-link lifting assembly (400) further includes an auxiliary pop-up rod (450); The follower base (410) is provided with a receiving groove (411), and the inner walls on both sides of the receiving groove (411) are provided with limited slideways (412). Both sides of the auxiliary pop-up rod (450) are provided with outer sliders (451), and the outer sliders (451) are slidably arranged in the limited slideways (412) to limit the sliding range of the auxiliary pop-up rod (450); The auxiliary pop-up rod (450) is provided below both the active connecting rod (430) and the driven connecting rod (440).

3. The rear seat electric tray table according to claim 2, characterized in that: A return spring (452) is provided between the auxiliary pop-up rod (450) and the accommodating groove (411).

4. The rear seat electric tray table according to claim 2, characterized in that: The small tabletop assembly (100) includes a tabletop (110) and a rotating member (120); The rotating member (120) is fixedly mounted on the bottom of the desktop panel (110); Both the active connecting rod (430) and the driven connecting rod (440) are connected to the rotating member (120).

5. The rear seat electric tray table according to claim 4, characterized in that: A linkage bracket (461) is fixedly installed between the two driven connecting rods (440), a linkage rod (462) is pivotally connected to the linkage bracket (461), and a linkage slider (463) is pivotally connected to one end of the linkage rod (462) away from the linkage bracket (461); A rotating transition plate (130) is provided between the desktop panel (110) and the rotating member (120), the rotating transition plate (130) is rotatably connected to the rotating member (120), and a linkage sliding groove (131) adapted to the linkage sliding block (463) is provided at the bottom of the rotating transition plate (130); A rotation-stop block (121) is eccentrically provided at the bottom of the rotating member (120), and a rotation-stop groove (464) adapted to the rotation-stop block (121) is provided on the linkage slider (463).

6. The rear seat electric tray table according to claim 1, characterized in that: The follower base (410) is provided with a rotation-stopping seat (414), and the position-limiting blocking rod (433) is provided with a rotation-stopping slot (434) adapted to the rotation-stopping seat (414).

7. The rear seat electric tray table according to claim 1, characterized in that: The electric translation assembly (300) comprises a motor (310), a screw (320) and a screw nut (330); The motor (310) is fixed in the chair armrest base (200), the screw rod (320) is in transmission connection with the motor (310), the screw rod nut (330) is installed on the follower base (410), and the screw rod nut (330) is in transmission connection with the screw rod (320).

8. The rear seat electric tray table according to claim 7, characterized in that: The electric translation assembly (300) further comprises a translation guide rod (340), and a translation slide seat (413) adapted to the translation guide rod (340) is provided on the follower base (410).

9. The rear seat electric tray table according to any one of claims 1 to 8, characterized in that: A guide slider (422) is provided at the bottom of the armrest cover (420), and a guide slot (220) adapted to the guide slider (422) is provided on the chair armrest base (200).

10. A chair armrest, characterized in that: Including the rear seat electric small table according to any one of claims 1 to 9.

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