Seat armrest small table board

Abstract

The utility model discloses a seat armrest small table board, which comprises a shell, a guide sliding seat, a driving rope, a locking pin, a first locking device, a first unlocking device, a second locking device and a second unlocking device, the shell is internally provided with a cavity, the cavity is a sliding cavity extending along the length direction of the cavity, the guide sliding seat slides along the length direction of the sliding cavity, and the driving rope is arranged on the driving rope. A vertical shaft is arranged on the upper portion of the guide sliding seat, the vertical shaft is arranged in the height direction and can horizontally rotate along the axis, a first swing shaft is arranged at the top end of the vertical shaft and provided with a supporting shaft, a horizontal shaft extending vertically is arranged at the tail end of the supporting shaft, and the horizontal shaft is provided with a first plate body rotating horizontally. The first plate body is provided with a second plate body in a swinging mode through a first hinge in the length direction of the first plate body. Furthermore, the first locking device and the second locking device are matched with the same locking pin, so that locking during storage and use is realized, and the locking structure is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, especially a seat armrest small table board. BACKGROUND

[0002] With the development of automobiles, the demand for convenience of automobiles also increases, and therefore automobile support shafts also come into being. Through the setting of the automobile support shaft, daily use such as office work, entertainment, or eating can be facilitated.

[0003] Therefore, how to design the automobile support shaft to be convenient to use and easy to store when not in use is the key to the design.

[0004] For example, Chinese patent application No. 202221575001.5, the support shaft is mainly engaged through the gear of the lifting assembly and the rack on the groove wall of the storage groove, thereby realizing the vertical sliding of the support shaft. However, in actual use, it has noise, and adopts a structure of being pushed out by an elastic member, and the locking structure is arranged at the upper end position of the shell. Although the gear and the rack are matched when the initial segment is pushed out, a large pressure is generated in the initial segment, which is easy to cause impact on children or hands, and a large pressing force is required to open the locking structure to realize unlocking, which affects the use experience. SUMMARY

[0005] The main purpose of the utility model is to provide a seat armrest small table board, which aims to improve the existing automobile small support shaft structure, thereby realizing folding storage, and the sliding is more linear when unfolded for use, and the structure is simple, convenient to open and store.

[0006] To achieve the above purpose, the utility model provides a seat armrest small table board, which comprises:

[0007] The shell is internally provided with a cavity, and the cavity is a sliding cavity extending along the length direction thereof;

[0008] The guide sliding seat slides along the length direction of the sliding cavity, the upper part of the guide sliding seat is provided with a vertical shaft, the vertical shaft is arranged along the height direction and can rotate horizontally along the shaft center, and the top end of the vertical shaft is provided with a first swing shaft;

[0009] The driving rope is arranged at the winding device in the guide sliding seat at one end and at the upper part of the sliding cavity at the other end;

[0010] When the guide sliding seat extends into the sliding cavity, the driving rope is in an unfolded state, and when the guide sliding seat moves to the upper end position of the sliding cavity, the driving rope is wound in the winding device;

[0011] The lower part of the guide sliding seat is provided with two spaced locking pins;

[0012] A first locking device is arranged at the bottom of the sliding cavity, and is used to lock the other locking pin;

[0013] A first unlocking device is used to unlock the first locking device, and the winding device works and drives the guide sliding seat to move upward;

[0014] A second locking device is arranged at the top of the sliding cavity, and the locking pin is in contact with the second locking device when the winding device stops,

[0015] Pulling the guide sliding seat upward can lock the locking pin with the second locking device;

[0016] A second unlocking device is used to unlock the second locking device.

[0017] In the actual design, unlike the existing pop-up structure, the guide sliding seat is driven by the winding device to move more smoothly, avoiding the ejection problem of torsion spring structure in the running process, and making the movement more linear;

[0018] In addition, in the actual design, the first locking device is arranged at the bottom of the sliding cavity, and the first unlocking device is arranged at the top of the shell and drives the first locking device to unlock through the linkage rope, thereby making the unlocking more convenient, playing the role of a lever, making the unlocking more labor-saving and simple, and more convenient;

[0019] Further, the first locking device and the second locking device cooperate with the same locking pin, thereby realizing the locking during storage and use, and making the locking structure simpler;

[0020] In the actual design, the second unlocking device can be arranged with a linkage structure or arranged as a structure suitable for the first unlocking (for example, arranged at the top of the shell and unlocked by gravity and pushing), and the unlocking is realized through a button.

[0021] Through the cooperation of the first locking device, the second locking device, the first unlocking device and the second unlocking device, the locking and unlocking of the locking pin are realized, and the structure is simple and stable. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view when the table board is completely unfolded Figure 1 ;

[0023] Figure 2 is a schematic view when the table board is completely unfolded Figure 2 ;

[0024] Figure 3 is a schematic view when the table board is completely unfolded Figure 3 ;

[0025] Figure 4 Fig. 4 is a schematic view of the guide slide in the second locking device position;

[0026] Figure 5 Fig. 5 is a schematic view of the guide slide in the first locking device position;

[0027] Figure 6 Fig. 6 is a schematic view of the sliding cavity Figure 1 ;

[0028] Figure 7 Fig. 7 is a schematic view of the sliding cavity Figure 2 ;

[0029] Figure 8 Fig. 8 is a schematic view of the first locking device;

[0030] Figure 9 Fig. 9 is a schematic view of the second locking device;

[0031] Figure 10 Fig. 10 is a schematic view of the second locking device in half section;

[0032] Figure 11 Fig. 11 is a schematic view of the guide slide in perspective;

[0033] Figure 12 Fig. 12 is a schematic view of the guide slide in half section;

[0034] Figure 13 Fig. 13 is a schematic view of the support shaft in perspective;

[0035] Figure 14 Fig. 14 is a schematic view of the guide slide in section;

[0036] Figure 15 Fig. 15 is a schematic view of the top rod and the crank seat.

[0037] 1 is the housing, 10 is the sliding cavity,

[0038] 2 is the guide slide, 21 is the vertical shaft, 22 is the support shaft, 23 is the first swing shaft,

[0039] 31 is the first plate body, 32 is the second plate body, 33 is the horizontal shaft, 34 is the first hinge,

[0040] 4 is the first locking device, 40 is the first positioning plate, 41 is the first arc-shaped slot, 42 is the first side slot, 43 is the first clamping slot, 44 is the first clamping hook, 45 is the first swing seat, 46 is the first locking seat, 47 is the first guide wall, 48 is the tail part,

[0041] 5 is the second locking device, 50 is the second positioning plate, 51 is the second arc-shaped slot, 52 is the second side slot, 53 is the second clamping slot, 54 is the second clamping hook, 55 is the second swing seat, 56 is the second locking seat, 57 is the second guide wall, 58 is the inclined surface,

[0042] 6 is a first unlocking device, 61 is a button, 62 is a flap, 63 is a linkage rope,

[0043] 7 is a second unlocking device, 70 is a guide sliding hole, 71 is a top post, 72 is a crank seat, 73 is a top spring, 74 is a first pivot slot, 75 is a convex surface,

[0044] 8 is a locking pin, 81 is a first torsion spring, 82 is a second torsion spring, 83 is a third torsion spring, 84 is a fourth torsion spring,

[0045] 9 is a winding device, 90 is a driving rope, 91 is a guide rail, 92 is a sliding block. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0048] In addition, if the embodiments of the present application involve descriptions of "first" or "second", etc., the descriptions of "first" or "second" are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but must be based on the realization of the ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0049] As shown in FIG. 1, a seat armrest small table board comprises: Figures 1 to 15 As shown in FIG. 1, a seat armrest small table board comprises:

[0050] A shell 1, the shell 1 is internally provided with a cavity, the cavity is a sliding cavity 10 extending along its length direction;

[0051] A guide sliding seat 2 is arranged to slide along the length direction of the sliding cavity 10, and the upper portion of the guide sliding seat 2 is provided with a vertical shaft 21 arranged in the height direction and horizontally rotatable along the shaft center, the top end of the vertical shaft 21 is provided with a first swing shaft 23, the first swing shaft 23 is provided with a support shaft 22, the end of the support shaft 22 is provided with a vertically extended horizontal shaft 33, the horizontal shaft 33 is provided with a first plate body 31 horizontally rotatable, and the second plate body 32 is swingingly mounted on the first plate body along the length direction of the first plate body through a first hinge 34;

[0052] A drive rope 90 is arranged at one end of the guide sliding seat 2 in the winding device 9, and the other end is arranged at the upper portion of the sliding cavity 10;

[0053] When the guide sliding seat 2 extends into the sliding cavity 10, the drive rope 90 is in an unfolded state, and when the guide sliding seat 2 moves to the upper end position of the sliding cavity 10, the drive rope 90 is wound in the winding device 9;

[0054] Locking pins 8, the lower portion of the guide sliding seat 2 is provided with two locking pins 8 arranged at intervals;

[0055] A first locking device 4 is arranged at the bottom position of the sliding cavity 10, and the first locking device 4 is used to lock the other locking pin 8;

[0056] A first unlocking device 6 is used to unlock the first locking device 4, and the winding device 9 works and drives the guide sliding seat 2 to move upward;

[0057] A second locking device 5 is arranged at the top position of the sliding cavity 10, when the winding device 9 stops, the locking pin 8 is in contact with the second locking device 5,

[0058] Pulling the guide sliding seat 2 upward can lock the locking pin 8 with the second locking device 5;

[0059] A second unlocking device 7 is arranged on the vertical shaft and is used to unlock the second locking device 5, and to push the guide sliding seat 2 to slide downward until the first locking device 4 is locked with the locking pin 8.

[0060] In actual design, unlike the existing pop-up structure, the movement of the guide sliding seat 2 driven by the winding device 9 can make the movement more stable, avoid the ejection problem of torsional spring structure in the running process, and make the movement more linear;

[0061] In addition, in actual design, the first locking device 4 is arranged at the bottom of the sliding cavity 10, and the first unlocking device 6 is arranged at the top end of the shell 1 and drives the first locking device 4 to be unlocked through the linkage rope 63, so that the unlocking is more convenient, the effect of a lever is achieved, the unlocking is more labor-saving and simple, and the convenience is improved;

[0062] Further, the first locking device 4 and the second locking device 5 are matched with the same locking pin 8, so that the locking in the storage and use is realized, and the locking structure is simpler;

[0063] In addition, the ejection shaft is arranged between the vertical shaft 21 and the support shaft 22, the second unlocking device is driven through the ejection shaft, and then the unlocking of the second locking device 5 is realized, that is, the second locking device 5 is unlocked while the support shaft 22 is stored, and the use convenience is effectively improved,

[0064] The second unlocking device is not needed in form, the second unlocking device is realized in the folding process, the linkage is realized in storage, and the use convenience is improved.

[0065] Specifically, the first locking device 4 includes two first positioning plates arranged at intervals, a first swing seat 45 swingingly installed between the first positioning plates, and a first locking seat 46,

[0066] The first positioning plate is provided with a first arc-shaped groove 41;

[0067] The first swing seat 45 is provided with a first side groove 42, and the first side groove 42 can swing between a position same as an opening direction of the first arc-shaped groove 41 or a position tangent to the opening direction of the first arc-shaped groove 41;

[0068] When locking is needed, the locking pin 8 is clamped into the first side groove 42 and makes the first side groove 42 swing to the position tangent to the first arc-shaped groove 41;

[0069] The first locking seat 46 is used for locking the first side groove 42 of the first swing seat 45 at the position tangent to the opening direction of the first arc-shaped groove 41.

[0070] When the first swing seat 45 is in the unlocking state, the first side groove 42 swings upward and then swings to the position same as the opening of the first arc-shaped groove 41;

[0071] When a hand exerts pressure downward, the locking pin 8 is first clamped into the first side groove 42, until the locking pin 8 abuts against the bottom wall of the first arc-shaped groove 41, and then the locking is realized,

[0072] At this time, the first locking seat 46 locks the first swing seat 45, and then the double-positioning is realized.

[0073] Specifically, the first swing seat 45 extends two oppositely arranged first side arms, which enclose the first side slot 42,

[0074] The lower first side arm is provided with a first clamping slot 43 concaved inwardly, and the first locking seat 46 is provided with a first clamping hook 44 matched with the first clamping slot 43.

[0075] The first side arm at the lower end wall of the first clamping slot 43 is provided with a first guide wall 47, which gradually extends inwardly in an arc shape from the position of the first clamping slot 43.

[0076] Specifically, the first swing seat 45 is provided with a first torsion spring 81 at the position of the rotation shaft, which is used to apply a spring force to the first swing seat 45 to swing towards the position with the same direction as the opening direction of the first arc-shaped slot 41.

[0077] The first locking seat 46 is provided with a second torsion spring 82 at the position of the rotation shaft, which is used to apply a spring force to the first swing seat 45 to swing towards the position close to the first arc-shaped slot.

[0078] In actual design, the first swing seat 45 and the first locking seat 46 are both provided with a limiting pin, thereby limiting the predetermined swing angle.

[0079] Therefore, through the first torsion spring 81, the swing of the first swing seat 45 to the tangent position can be realized when the locking pin 8 is pressed downward,

[0080] When the first clamping slot 43 and the first clamping hook 44 of the first locking seat 46 and the first swing seat 45 are matched with each other, the first torsion spring 81 can realize the locking force.

[0081] Therefore, when actually unlocking, only the spring force of the second torsion spring 82 needs to be overcome, so as to release the spring force of the first swing seat 45, thereby realizing the unlocking of the locking pin 8,

[0082] At this time, the guide slide is driven by the winding device 9 to go up and extend.

[0083] Specifically, the first unlocking device 6 includes a button 61 vertically slidingly installed on the top of the shell 1, a flap 62 connected to one end of the button 61, and a linkage rope 63 connected to the other end of the flap 62, and the rear wall of the first locking seat 46 away from the first clamping hook 44 is provided with a tail,

[0084] The tail is connected to the other end of the linkage rope 63,

[0085] When the button 61 applies pressure, the linkage rope 63 can be pulled up, and the first locking seat 46 is swung backward to overcome the spring force of the second torsion spring, thereby realizing the unlocking between the first swing seat 45 and the first locking seat 46.

[0086] Specifically, the winding device 9 is a coil spring, and a rotating wheel is arranged outside the coil spring, and an outer wall of the rotating wheel is used for winding the driving rope 90;

[0087] The sliding cavity 10 comprises a column cavity and a plate cavity, wherein the vertical shaft 21 and the support shaft 22 extend into the column cavity, and the first plate body 31 and the second plate body 32 extend into the plate cavity after being folded;

[0088] The column cavity and the plate cavity are in a “T” shape, and the guide sliding seat is also in a “T” shape;

[0089] Both sides of the sliding cavity 10 are provided with guide rails arranged along the length direction, the guide sliding seat is provided with sliding blocks matched with the guide rails, and the sliding cavity 10 is also provided with a plurality of rollers at the bottom and the top, wherein the rollers can also play a buffering and guiding sliding role.

[0090] Specifically, the second locking device 5 is provided with two groups and is arranged at intervals, and the second locking device 5 comprises two second positioning plates arranged at intervals, a second swing seat 55 swingingly installed between the second positioning plates, and a second locking seat 56,

[0091] The second positioning plate is provided with a second arc-shaped groove 51, and an opening of the second arc-shaped groove 51 is arranged downward;

[0092] The second swing seat 55 is provided with a second side groove 52, and the second side groove 52 can swing between a position same as or tangent to the opening direction of the second arc-shaped groove 51;

[0093] When locking is needed, the locking pin 8 is clamped into the second side groove 52 and makes the second side groove 52 swing to the position tangent to the second arc-shaped groove 51;

[0094] The second locking seat 56 is used for locking the second side groove 52 of the second swing seat 55 when the second side groove 52 is tangent to the opening direction of the second arc-shaped groove 51.

[0095] When the second swing seat 55 is in an unlocking state, the second side groove 52 swings upward and then swings to the position same as the opening of the second arc-shaped groove 51;

[0096] When a hand of a person applies pressure downward, the locking pin 8 is first clamped into the second side groove 52, until the locking pin 8 abuts against a bottom wall of the second arc-shaped groove 51, and then locking is realized,

[0097] At this time, the second locking seat 56 locks the second swing seat 55, and then double limiting is realized.

[0098] Specifically, the second swing seat 55 extends two second side arms arranged oppositely, and the two second side arms enclose the second side groove 52,

[0099] The second side arm located above is provided with a second clamping groove 53 concavely arranged inwardly, and the second locking seat 56 is provided with a second clamping hook 54 matched with the second clamping groove 53;

[0100] The second side arm located at the upper end wall of the second clamping groove 53 is provided with a second guide wall 57 gradually extending inwardly in an arc shape from the position of the second clamping groove 53.

[0101] Specifically, the pivot position of the second swing seat 55 is provided with a third torsional spring 83 for applying a swing force to the second swing seat 55 towards the position same as the opening direction of the second arc-shaped groove 51;

[0102] The pivot position of the second locking seat 56 is provided with a fourth torsional spring 84 for applying a swing force to the first swing seat 45 towards the position close to the first arc-shaped groove.

[0103] In actual design, the second swing seat 55 and the second locking seat 56 are both provided with a limiting pin to limit the predetermined swing angle thereof;

[0104] Therefore, the third torsional spring 83 can realize the swing of the first swing seat 45 to the tangent position when the locking pin 8 is pressed upward,

[0105] When the second clamping groove 53 and the second clamping hook 54 of the second locking seat 56 and the second swing seat 55 are matched with each other, the fourth torsional spring 84 can realize the locking force;

[0106] Therefore, when actually unlocking, only the elastic force of the third torsional spring 83 needs to be overcome to release the elastic force of the first swing seat 45, thereby realizing the unlocking of the locking pin 8,

[0107] At this time, the guide sliding seat is driven by the winding device 9 to drive the guide sliding seat to go up and extend.

[0108] Specifically, the second locking seat 56 extends towards the opposite wall surface and is provided with a second unlocking block, and the upper wall of the second unlocking block is an inclined surface 58;

[0109] The second unlocking device includes a guide sliding hole 70 arranged on the vertical shaft 21 and a jacking column 71 arranged in the guide sliding hole 70,

[0110] The lower end of the jacking column 71 is provided with a swing arranged crank seat 72, and the crank seat 72 extends to the position of the inclined surface 58;

[0111] The jacking column 71 can slide between the position of upward sliding or the position of driving the crank seat 72 to move towards the inclined surface 58.

[0112] When the top post 71 slides upward, the crank base 72 is not in contact with the inclined surface 58, and when the support shaft 22 needs to be folded, the shaft part of the base plate is in abutment with the upper end of the top post 71, thereby driving the top post 71 to go down, and thereby realizing the unlocking of the second locking device 5.

[0113] Specifically, the guide sliding seat is provided with a first pivot slot, the vertical shaft 21 is pivotally installed in the first pivot slot 74, a top spring 73 is arranged between the guide sliding hole 70 and the top post 71, and the top spring 73 is used to apply an upward elastic force to the vertical shaft 21 and the top post 71;

[0114] The vertical shaft can be rotated according to actual needs,

[0115] When the vertical shaft 21 swings, the crank base 72 swings to limit the swing amplitude of the vertical shaft 21, that is, the crank base 72 plays a role of unlocking and also plays a role of unlocking the second locking device 5,

[0116] The guide sliding hole 70 and the top post 71 are both non-circular, when the support shaft 22 corresponds to the sliding cavity 10, the crank base 72 is just located between the two inclined surfaces 58, and the arrangement of the inclined surfaces 58 also plays a role of avoiding.

[0117] Specifically, the top of the vertical shaft 21 is provided with two spaced-apart pivot parts, the support shaft 22 is pivotally installed between the two pivot parts, and the rear end of the support shaft 22 is provided with a convex surface 75,

[0118] When the vertical shaft 21 and the support shaft 22 are in the same vertical direction, that is, when folding is needed, the support shaft 22 is vertically arranged, the convex surface 75 is in abutment with the upper end of the top post 71, and the crank base 72 is forced to go down.

[0119] In the actual folding process, the sliding cavity 10 includes a column cavity and a plate cavity, the vertical shaft 21 and the support shaft 22 extend into the column cavity, and the first plate body 31 and the second plate body 32 extend into the plate cavity after being folded, thereby realizing the storage of more devices in the smallest volume.

[0120] Compared with the existing structure, the same locking pin 8 structure is adopted, and the first locking device 4 and the first unlocking device 6 are respectively located at the bottom and the top, which can make the locking more stable and the unlocking more convenient.

[0121] When the guide sliding seat needs to be locked to the second locking device 5, the locking pin 8 is in abutment with the wall surface of the second swing seat 55 and is not clamped, so that the locking is realized in the process of secondary manual pulling.

[0122] When the second locking seat 56 needs to be unlocked, the vertical arrangement of the supporting shaft 22 realizes the downward movement of the crank seat 72, and then the second locking seat 56 swings, the second swing seat 55 is unlocked under the elastic force of the third torsional spring 83, and then the downward movement of the guide sliding seat is realized by continuously pushing, and the structure is simple and the linkage is more convenient.

[0123] The vertical shaft 21, the supporting shaft 22, the first plate body 31 and the second plate body 32 are provided with damping in the rotating position, thereby providing predetermined limiting. Of course, predetermined stoppers are also arranged in the specific rotating limiting, thereby realizing positioning and limiting.

[0124] The linkage rope realizes stable sliding through the hollow pipe.

[0125] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields under the application concept of the present application, and the contents of the present application specification and drawings are included in the patent protection range of the present application.

Claims

1. A seat arm table board, characterized by, The utility model relates to a shell, the shell is internally provided with a cavity, the cavity is the sliding cavity extending along its length direction; The guide sliding seat slides along the length direction of the sliding cavity, the upper portion of the guide sliding seat is provided with a vertical shaft, the vertical shaft is arranged along the height direction and can rotate horizontally along the shaft center, the top end of the vertical shaft is provided with a first swing shaft; The driving rope is arranged on the winding device in the guide sliding seat at one end and is arranged on the upper portion of the sliding cavity at the other end; When the guide sliding seat extends into the sliding cavity, the driving rope is in the unfolded state, when the guide sliding seat moves to the upper end position of the sliding cavity, the driving rope is wound in the winding device; The lower portion of the guide sliding seat is provided with two spaced locking pins; The first locking device is arranged at the bottom position of the sliding cavity and is used for locking the other locking pin; The first unlocking device is used for unlocking the first locking device, the winding device works and drives the guide sliding seat to move upwards; The second locking device is arranged at the top position of the sliding cavity, when the winding device stops, the locking pin is attached to the second locking device, Pulling the guide sliding seat upwards can lock the locking pin with the second locking device; The second unlocking device is used for unlocking the second locking device. The first locking device includes two spaced first positioning plates, a first swing seat swing-mounted between the first positioning plates and a first locking seat, 2. The armrest table of claim 1, wherein: The first positioning plate is provided with a first arc-shaped groove; The first swing seat is provided with a first side groove, which can swing between the same position as the opening direction of the first arc-shaped groove or the tangent position of the opening direction of the first arc-shaped groove; When locking is needed, the locking pin is clamped into the first side groove and makes the first side groove swing to the tangent position of the first arc-shaped groove; The first locking seat is used for locking the first side groove of the first swing seat when the first side groove is tangent to the opening direction of the first arc-shaped groove. The first swing seat extends two opposite first side arms, and the first side arms enclose the first side groove, 3. The armrest table of claim 2, wherein: The lower first side arm is provided with an inwardly recessed first clamping groove, and the first locking seat is provided with a first clamping hook matched with the first clamping groove; The first side arm at the lower end wall of the first clamping groove is provided with a first guide wall, which gradually extends inwardly in an arc shape from the position of the first clamping groove; The pivot position of the first swing seat is provided with a first torsional spring, which is used for applying a swing force to the first swing seat towards the same position as the opening direction of the first arc-shaped groove; The pivot position of the first locking seat is provided with a second torsional spring, which is used for applying a swing force to the first swing seat towards the position close to the first arc-shaped groove. The first unlocking device includes a button vertically slidingly mounted on the top of the shell, a flap connected to one end of the button, and a linkage rope connected to the other end of the flap, the rear wall of the first locking seat away from the first clamping hook is provided with a tail portion, 4. The armrest table of claim 3, wherein: The tail portion is connected to the other end of the linkage rope, When the button applies pressure, the linkage rope can be pulled upwards, and the first locking seat can swing backward against the elastic force of the second torsional spring. ​ 5. The armrest table of claim 1, wherein: The winding device is a winding spring, and a rotating wheel is arranged outside the winding spring, and an outer wall of the rotating wheel is used for winding a driving rope; The sliding cavity comprises a column cavity and a plate cavity, wherein the vertical shaft and the support shaft extend into the column cavity, and the first plate body and the second plate body extend into the plate cavity after being folded; The column cavity and the plate cavity are in a "T" shape, and the guide sliding seat is also in a "T" shape; Both sides of the sliding cavity are provided with guide rails arranged along the length direction, the guide sliding seat is provided with sliding blocks matched with the guide rails, and the sliding cavity is also provided with a plurality of rollers at the bottom and the top.

6. The armrest table of claim 1, wherein: The second locking device is provided with two groups and is arranged at intervals, and the second locking device comprises two second positioning plates arranged at intervals, a second swing seat swingingly mounted between the second positioning plates, and a second locking seat, The second positioning plate is provided with a second arc-shaped groove, and an opening of the second arc-shaped groove is arranged downward; The second swing seat is provided with a second side groove, and the second side groove can swing between a position same as the opening direction of the second arc-shaped groove or a position tangent to the opening direction of the second arc-shaped groove; When locking is needed, the locking pin is clamped into the second side groove and makes the second side groove swing to the position tangent to the second arc-shaped groove; The second locking seat is used for locking when the second side groove of the second swing seat is tangent to the opening direction of the second arc-shaped groove.

7. The armrest table panel of claim 6, wherein: The second swing seat extends two second side arms arranged oppositely, and the two second side arms enclose the second side groove, The upper second side arm is provided with a second clamping groove concavely arranged inward, and the second locking seat is provided with a second clamping hook matched with the second clamping groove.

8. The armrest table panel of claim 7, wherein: The upper end wall of the second side arm at the second clamping groove is provided with a second guide wall, and the second guide wall gradually extends in an arc shape inward from the position of the second clamping groove.

9. The armrest table of claim 8, wherein: The pivot position of the second swing seat is provided with a third torsion spring, and the third torsion spring is used for applying an elastic force to the second swing seat to swing to the position same as the opening direction of the second arc-shaped groove; The pivot position of the second locking seat is provided with a fourth torsion spring, and the fourth torsion spring is used for applying an elastic force to the first swing seat to swing to the position close to the first arc-shaped groove.

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