Seat armrest small table board

Abstract

The invention 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, a cavity is formed in the shell and is a sliding cavity extending in the length direction of the cavity, the guide sliding seat slides in 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. And the second unlocking device is arranged on the vertical shaft and is used for unlocking the second locking device and pushing the guide sliding seat to slide downwards until the first locking device is locked with the locking pin.

Description

Technical Field

[0001] The invention relates to the field of automobile accessories, in particular to a seat armrest small table board. Background Art

[0002] With the development of automobiles, the demand for automobile convenience has also increased, so automobile support shafts have also emerged. The setting of automobile support shafts can facilitate daily use, such as office, entertainment or eating.

[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, in Chinese patent 202221575001.5, the support shaft is mainly meshed 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 in which an elastic part is ejected, and the locking structure is arranged at the upper end of the shell. Although there is cooperation between the gear and the rack during the ejection of the initial section, a large pressure will be generated in the initial section, which may easily cause impact on children or hands. Moreover, a large pressing force is required to unlock the locking structure, which affects the user experience. Summary of the invention

[0005] The main purpose of the present invention is to propose a small seat armrest table, which aims to improve the existing small support shaft structure of the car, thereby enabling folding and storage. At the same time, when unfolded for use, its sliding is more linear, and the structure is simple, which is convenient for opening and storage.

[0006] To achieve the above object, the present invention provides a seat armrest table, comprising:

[0007] A shell, wherein the shell has a cavity inside, and the cavity is a sliding cavity extending along its length direction;

[0008] A guide slide seat, the guide slide seat slides along the length direction of the sliding cavity, a vertical shaft is provided on the upper part of the guide slide seat, the vertical shaft is arranged along the height direction and can rotate horizontally along the axis, a first swing shaft is provided at the top end of the vertical shaft, the first swing shaft is provided with a support shaft, a vertically extending horizontal shaft is provided at the end of the support shaft, the horizontal shaft is provided with a first plate body that rotates horizontally, and the first plate body is swingably mounted with a second plate body along its length direction through a first hinge;

[0009] A driving rope, one end of which is arranged on a winding device in the guide slide seat, and the other end of which is arranged on the upper part of the sliding cavity;

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

[0011] Locking pins, two locking pins are arranged at intervals at the lower part of the guide slide seat;

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

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

[0014] The second locking device is arranged at the top of the sliding cavity. When the winding device stops, the locking pin is in contact with the second locking device.

[0015] Pulling the guide slide upward can drive the locking pin to lock with the second locking device;

[0016] The second unlocking device is arranged on the vertical shaft and is used to unlock the second locking device and push the guide slide seat to slide downward until the first locking device is locked with the locking pin.

[0017] In the actual design, unlike the existing ejection structure, the guide slide is driven to move by the winding device, which can make its movement smoother, avoid the ejection problem of the torsion spring and other structures during operation, and make 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 housing and the first locking device is driven to unlock by the linkage rope, thereby making unlocking more convenient and playing the role of a lever, making unlocking more labor-saving, simple and convenient;

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

[0020] In addition, by arranging an ejection shaft between the vertical shaft and the support shaft, the second unlocking device is driven by the ejection shaft, thereby unlocking the second locking device, that is, the second locking device is unlocked while the support shaft is stored, which effectively improves the convenience of use.

[0021] In terms of form, there is no need for a second unlocking device, so that the built-in second unlocking device is realized during the folding process, thus realizing storage linkage and improving convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Indicates when the table is fully extended Figure 1 ;

[0023] Figure 2 Indicates when the table is fully extended Figure 2 ;

[0024] Figure 3 This is the indication of the table being fully unfolded. Figure 3 ;

[0025] Figure 4 is a schematic diagram of the guide slide being located at the second locking device position;

[0026] Figure 5 is a schematic diagram of the guide slide being located at the first locking device position;

[0027] Figure 6 Sliding cavity diagram Figure 1 ;

[0028] Figure 7 Sliding cavity diagram Figure 2 ;

[0029] Figure 8 is a schematic diagram of a first locking device;

[0030] Fig. 9 is a schematic diagram of a second locking device;

[0031] Fig.10 is a half-section schematic diagram of a second locking device;

[0032] Fig.11 It is a three-dimensional schematic diagram of the guide slide;

[0033] Fig.12 It is a half-section schematic diagram of the guide slide seat;

[0034] Fig.13 It is a three-dimensional schematic diagram of the support shaft;

[0035] Fig.14 It is a cross-sectional view of the guide slide seat;

[0036] Fig.15 Schematic diagram of the push rod and crank seat.

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

[0038] 2 is a guide slide, 21 is a vertical axis, 22 is a support axis, 23 is a first swing axis,

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

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

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

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

[0043] 7 is a second unlocking device, 70 is a guide slide hole, 71 is a top column, 72 is a crank seat, 73 is a top spring, 74 is a first pivot groove, 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, and 92 is a slider. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0048] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] like Figures 1 to 15 As shown, a seat armrest small table, comprising:

[0050] A housing 1, wherein the housing 1 has a cavity therein, and the cavity is a sliding cavity 10 extending along its length direction;

[0051] A guide slide seat 2, the guide slide seat 2 slides along the length direction of the sliding cavity 10, a vertical shaft 21 is provided on the upper part of the guide slide seat 2, the vertical shaft 21 is arranged along the height direction and can rotate horizontally along the axis, a first swing shaft 23 is provided at the top end of the vertical shaft 21, the first swing shaft 23 is provided with a support shaft 22, a vertically extending horizontal shaft 33 is provided at the end of the support shaft 22, the horizontal shaft 33 is provided with a first plate body 31 that rotates horizontally, and the first plate body is swingably mounted with a second plate body 32 along its length direction through a first hinge 34;

[0052] A driving rope 90, one end of which is arranged on the winding device 9 in the guide slide seat 2, and the other end of which is arranged on the upper part of the sliding cavity 10;

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

[0054] Locking pin 8, two locking pins 8 are arranged at intervals at the lower part of the guide slide seat 2;

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

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

[0057] The second locking device 5 is arranged at the top of the sliding chamber 10. When the winding device 9 stops, the locking pin 8 is in contact with the second locking device 5.

[0058] Pulling the guide slide 2 upward can drive the locking pin 8 to lock with the second locking device 5;

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

[0060] In the actual design, unlike the existing ejection structure, the guide slide 2 is driven to move by the winding device 9, which can make its movement more stable, avoid the ejection problem of the torsion spring and other structures during operation, and make the movement more linear;

[0061] In addition, in the 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 of the housing 1 and the first locking device 4 is driven to unlock through the linkage rope 63, thereby making unlocking more convenient and playing the role of a lever, making unlocking more labor-saving, simple and convenient;

[0062] Furthermore, the first locking device 4 and the second locking device 5 cooperate with the same locking pin 8, thereby achieving locking during storage and use, making the locking structure simpler;

[0063] In addition, by arranging an ejection shaft between the vertical shaft 21 and the support shaft 22, the second unlocking device is driven by the ejection shaft, thereby unlocking the second locking device 5, that is, the second locking device 5 is unlocked while the support shaft 22 is stored, which effectively improves the convenience of use.

[0064] In terms of form, there is no need for a second unlocking device, so that the built-in second unlocking device is realized during the folding process, thus realizing storage linkage and improving convenience of use.

[0065] Specifically, the first locking device 4 includes two first positioning plates spaced apart, a first swing seat 45 swingably mounted 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 in the same direction as the opening direction of the first arc groove 41 or a position tangent to the opening direction of the first arc groove 41;

[0068] When locking is required, the locking pin 8 is inserted into the first side groove 42 and causes the first side groove 42 to swing toward a position tangent to the first arc groove 41;

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

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

[0071] When a person applies pressure downward, the locking pin 8 first gets stuck in the first side groove 42 until the locking pin 8 abuts against the bottom wall of the first arc-shaped groove 41, thereby achieving locking.

[0072] At this time, the first locking seat 46 locks the first swing seat 45, thereby achieving double limit.

[0073] Specifically, the first swing seat 45 extends with two first side arms that are opposite to each other, and the two first side arms surround the first side groove 42.

[0074] The first side arm located at the bottom is provided with a first slot 43 which is recessed inwards, and the first locking seat 46 is provided with a first hook 44 which matches with the first slot 43;

[0075] A first guide wall 47 is provided on the lower end wall of the first side arm located at the first clamping slot 43 . The first guide wall 47 gradually extends inward in an arc shape from the position of the first clamping slot 43 .

[0076] Specifically, a first torsion spring 81 is provided at the rotation axis position of the first swing seat 45, and the first torsion spring 81 is used to apply an elastic force to the first swing seat 45 to swing toward the same position as the opening direction of the first arc-shaped slot 41;

[0077] A second torsion spring 82 is disposed at the rotation axis of the first locking seat 46 , and the second torsion spring 82 is used to force the first swing seat 45 to swing toward a position close to the first arc groove.

[0078] In the actual design, both the first swing seat 45 and the first locking seat 46 are provided with limit pins to limit the predetermined swing angles thereof;

[0079] Therefore, the first torsion spring 81 can realize that the first swing seat 45 swings to a tangential position when the locking pin 8 is pressed downward.

[0080] When the first locking seat 46 and the first slot 43 and the first hook 44 of the first swing seat 45 fit with each other, the first torsion spring 81 can achieve a locking force;

[0081] Therefore, when actually unlocking, it is only necessary to overcome the elastic force of the second torsion spring 82 to release the elastic force of the first swing seat 45, thereby unlocking the locking pin 8.

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

[0083] Specifically, the first unlocking device 6 includes a button 61 vertically slidably mounted on the top of the housing 1, a seesaw 62 connected to one end of the button 61, and a linkage rope 63 connected to the other end of the seesaw 62. The first locking seat 46 is provided with a tail on the rear wall away from the first hook 44.

[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 upward, and the first locking seat 46 can be driven to swing backward to overcome the elastic force of the second torsion spring, thereby unlocking the first swing seat 45 and the first locking seat 46.

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

[0087] The sliding cavity 10 includes 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 are folded and extend into the plate cavity;

[0088] The column cavity and the plate cavity are in a "T" shape, and the guide slide seat is in a "T" shape;

[0089] Guide rails are arranged along the length direction on both sides of the sliding cavity 10, and the guide slide seat is provided with sliders matching with the guide rails. The sliding cavity 10 is also provided with multiple rollers at the bottom and top, wherein the rollers can also play a role of buffering and guiding sliding.

[0090] Specifically, the second locking device 5 is provided with two groups and is spaced apart. The second locking device 5 includes two spaced apart second positioning plates, a second swing seat 55 and a second locking seat 56 swingably mounted between the second positioning plates.

[0091] The second positioning plate is provided with a second arc-shaped groove 51, and the 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 in the same direction as the opening direction of the second arc groove 51 or a position tangent to the opening direction of the second arc groove 51;

[0093] When locking is required, the locking pin 8 is inserted into the second side groove 52 and causes the second side groove 52 to swing toward a position tangent to the second arc groove 51;

[0094] The second locking seat 56 is used to lock the second side groove 52 of the second swing seat 55 at a position tangent to the opening direction of the second arc groove 51 .

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

[0096] When a person applies pressure downward, the locking pin 8 first gets stuck into the second side groove 52 until the locking pin 8 abuts against the bottom wall of the second arc groove 51, thereby achieving locking.

[0097] At this time, the second locking seat 56 locks the second swing seat 55, thereby achieving double limit.

[0098] Specifically, the second swing seat 55 extends with two second side arms that are opposite to each other, and the two second side arms surround the second side groove 52.

[0099] The second side arm located at the top is provided with a second slot 53 which is recessed inwards, and the second locking seat 56 is provided with a second hook 54 which matches with the second slot 53;

[0100] A second guide wall 57 is provided on the upper end wall of the second side arm located at the second clamping slot 53 . The second guide wall 57 gradually extends inward in an arc shape from the position of the second clamping slot 53 .

[0101] Specifically, a third torsion spring 83 is provided at the rotation axis position of the second swing seat 55, and the third torsion spring 83 is used to apply an elastic force to the second swing seat 55 to swing toward the same position as the opening direction of the second arc-shaped slot 51;

[0102] A fourth torsion spring 84 is disposed at the rotation axis of the second locking seat 56 , and the fourth torsion spring 84 is used to force the first swing seat 45 to swing toward a position close to the first arc groove.

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

[0104] Therefore, the third torsion spring 83 can realize that the first swing seat 45 swings to a tangential position when the locking pin 8 is pressed upward.

[0105] When the second locking seat 56 and the second clamping groove 53 and the second clamping hook 54 of the second swinging seat 55 are engaged with each other, the fourth torsion spring 84 can achieve a locking force;

[0106] Therefore, when actually unlocking, it is only necessary to overcome the elastic force of the third torsion spring 83 to release the elastic force of the first swing seat 45, thereby achieving unlocking of the locking pin 8.

[0107] At this time, the guide slide is driven by the winding device 9 to move upward and extend.

[0108] Specifically, the two second locking seats 56 extend toward the opposite wall surfaces to form second unlocking blocks, and the upper wall of the second unlocking blocks is an inclined surface 58;

[0109] The second unlocking device includes a guide slide hole 70 disposed on the vertical shaft 21 and a top column 71 disposed in the guide slide hole 70.

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

[0111] The top column 71 can slide between an upward sliding position or a position driving the crank seat 72 to move toward the inclined surface 58.

[0112] When the top column 71 slides upward, the crank seat 72 and the inclined surface 58 do not contact each other. When the support shaft 22 needs to be folded, the shaft of the seat plate abuts against the upper end of the top column 71, thereby driving the top column 71 downward, thereby unlocking the second locking device 5.

[0113] Specifically, the guide slide seat is provided with a first pivot groove, the vertical shaft 21 is pivotally mounted in the first pivot groove 74, a top spring 73 is provided between the guide slide hole 70 and the top column 71, and the top spring 73 is used to apply an upward elastic force to the top column 71 of the vertical shaft 21;

[0114] The vertical axis can be rotated according to actual needs.

[0115] When the vertical shaft 21 swings, the crank seat 72 swings accordingly to limit the swing amplitude of the vertical shaft 21, that is, the crank seat 72 not only unlocks the second locking device 5, but also unlocks the second locking device 5.

[0116] The guide hole 70 and the top column 71 are both non-circular in shape. When the support shaft 22 corresponds to the sliding cavity 10, the crank seat 72 is just located between the two inclined surfaces 58, and the setting of the inclined surface 58 also plays a role of avoidance.

[0117] Specifically, the top of the vertical shaft 21 is provided with two pivoting parts arranged at intervals, the support shaft 22 is pivotally installed between the two pivoting 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 they need to be stored and folded, the support shaft 22 is arranged vertically, and the convex surface 75 abuts against the upper end of the top column 71 and forces the crank seat 72 to move downward.

[0119] In the actual folding process, the sliding cavity 10 includes 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 are folded and extend into the plate cavity, thereby achieving 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 locking more stable and unlocking more convenient;

[0121] When the guide slide needs to be locked to the second locking device 5, the locking pin 8 abuts against the wall of the second swing seat 55 and is not locked, so locking is achieved during the second manual pulling process;

[0122] When the second locking seat 56 needs to be unlocked, the crank seat 72 is moved downward by the vertical setting of the support shaft 22, thereby realizing the swing of the second locking seat 56, and the second swing seat 55 is unlocked under the elastic force of the third torsion spring 83, and then the guide sliding seat can be moved downward by continuing to push. The structure is simple and the linkage is more convenient.

[0123] The vertical shaft 21, the support shaft 22, the first plate 31 and the second plate 32 are provided with damping at the rotation position, thereby providing a predetermined limit. Of course, a predetermined stopper will also be provided in the specific rotation limit to achieve positioning and limit.

[0124] The linkage rope achieves stable sliding through the hollow tube.

[0125] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A seat armrest table, characterized in that: include: A shell, wherein the shell has a cavity inside, and the cavity is a sliding cavity extending along its length direction; A guide slide seat, the guide slide seat slides along the length direction of the sliding cavity, a vertical shaft is provided on the upper part of the guide slide seat, the vertical shaft is arranged along the height direction and can rotate horizontally along the axis, a first swing shaft is provided at the top end of the vertical shaft, the first swing shaft is provided with a support shaft, a vertically extending horizontal shaft is provided at the end of the support shaft, the horizontal shaft is provided with a first plate body that rotates horizontally, and the first plate body is swingably mounted with a second plate body along its length direction through a first hinge; A driving rope, one end of which is arranged on a winding device in the guide slide seat, and the other end of which is arranged on the upper part of the sliding cavity; When the guide slide seat extends into the sliding cavity, the driving rope is in an unfolded state, and when the guide slide seat moves to the upper end position of the sliding cavity, the driving rope is wound in the winding device; Locking pins, two locking pins are arranged at intervals at the lower part of the guide slide seat; A first locking device, which is disposed at the bottom of the sliding cavity and is used to lock another locking pin; A first unlocking device, wherein the first unlocking device is used to unlock the first locking device, and the winding device works and drives the guide slide to move upward; The second locking device is arranged at the top of the sliding cavity. When the winding device stops, the locking pin is in contact with the second locking device. Pulling the guide slide upward can drive the locking pin to lock with the second locking device; The second unlocking device is arranged on the vertical shaft and is used to unlock the second locking device and push the guide slide seat to slide downward until the first locking device is locked with the locking pin.

2. The seat armrest table as claimed in claim 1, characterized in that: The first locking device comprises two first positioning plates spaced apart, a first swing seat swingably mounted between the first positioning plates, and a first locking seat. The first positioning plate is provided with a first arc-shaped groove; The first swing seat is provided with a first side groove, and the first side groove can swing between a position in the same direction as the opening direction of the first arc groove or a position tangent to the opening direction of the first arc groove; When locking is required, the locking pin is inserted into the first side groove and causes the first side groove to swing toward a position tangent to the first arc groove; The first locking seat is used to lock the first side groove of the first swing seat at a position tangent to the opening direction of the first arc groove.

3. The seat armrest table as claimed in claim 2, characterized in that: The first swing seat is extended with two first side arms arranged opposite to each other, and the two first side arms surround the first side groove. The first side arm located at the bottom is provided with a first slot recessed inwardly, and the first locking seat is provided with a first hook matched with the first slot; The first side arm is provided with a first guide wall at the lower end wall of the first slot, and the first guide wall gradually extends inward in an arc shape from the position of the first slot; A first torsion spring is provided at the rotation axis position of the first swing seat, and the first torsion spring is used to apply an elastic force to the first swing seat to swing toward a position in the same direction as the opening direction of the first arc-shaped groove; A second torsion spring is disposed at the rotation axis position of the first locking seat, and the second torsion spring is used to force the first swing seat to swing toward a position close to the first arc groove.

4. The seat armrest table as claimed in claim 3, characterized in that: The first unlocking device includes a button vertically slidably mounted on the top of the housing, a seesaw connected to one end of the button, and a linkage rope connected to the other end of the seesaw. The first locking seat is provided with a tail on a rear wall away from the first hook. The tail is connected to the other end of the linkage rope. When the button applies pressure, the linkage rope can be pulled upward, and the first locking seat can be driven to swing backward to overcome the elastic force of the second torsion spring.

5. The seat armrest table as claimed in claim 1, characterized in that: The winding device is a winding spring and a rotating wheel arranged outside the winding spring, and the outer wall of the rotating wheel is used for winding the driving rope; The sliding cavity comprises a column cavity and a plate cavity, wherein the vertical shaft and the supporting 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 slide seat is in a "T" shape; Guide rails are arranged along the length direction on both sides of the sliding cavity, and the guide slide seat is provided with sliding blocks matched with the guide rails. The sliding cavity is also provided with a plurality of rollers at the bottom and the top.

6. The seat armrest table as claimed in claim 1, characterized in that: The second locking device is provided with two groups and is spaced apart. The second locking device comprises two spaced apart second positioning plates, a second swing seat and a second locking seat swingably mounted between the second positioning plates. The second positioning plate is provided with a second arc-shaped groove, and the 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 in the same direction as the opening direction of the second arc groove or a position tangent to the opening direction of the second arc groove; When locking is required, the locking pin is inserted into the second side groove and causes the second side groove to swing toward a position tangent to the second arc groove; The second locking seat is used to lock the second side groove of the second swing seat at a position tangent to the opening direction of the second arc groove.

7. The seat armrest table according to claim 6, characterized in that: The second swing seat is extended with two second side arms arranged opposite to each other, and the two second side arms surround the second side groove. The second side arm located at the top is provided with a second slot recessed inwardly, and the second locking seat is provided with a second hook matched with the second slot; The second side arm is provided with a second guide wall on the upper end wall of the second slot, and the second guide wall gradually extends inward in an arc shape from the position of the second slot; A third torsion spring is provided at the rotation axis position of the second swing seat, and the third torsion spring is used to apply an elastic force to the second swing seat to swing toward a position in the same direction as the opening direction of the second arc-shaped groove; A fourth torsion spring is disposed at the rotation axis position of the second locking seat, and the fourth torsion spring is used to force the first swing seat to swing toward a position close to the first arc groove.

8. The seat armrest table according to claim 7, characterized in that: The two second locking seats are provided with second unlocking blocks extending toward the opposite wall surfaces, and the upper wall of the second unlocking blocks is an inclined surface; The second unlocking device includes a guide slide hole provided on the vertical shaft and a top column provided in the guide slide hole. The lower end of the top column is provided with a swinging crank seat, and the crank seat extends forward to the position of the inclined surface; The top column can slide between a position of sliding upward or a position of driving the crank seat to move toward the inclined surface.

9. The seat armrest table as claimed in claim 8, characterized in that: The guide slide seat is provided with a first pivot groove, the vertical shaft is pivotally mounted in the first pivot groove, a top spring is provided between the guide slide hole and the top column, and the top spring is used to apply an upward elastic force to the top column of the vertical shaft; When the vertical shaft swings, the crank seat swings accordingly to limit the swing amplitude of the vertical shaft.

10. The seat armrest table according to claim 9, characterized in that: The top of the vertical shaft is provided with two pivoting parts arranged at intervals, the support shaft is pivotally installed between the two pivoting parts, and the rear end of the support shaft is provided with a convex surface. When the vertical shaft and the supporting shaft are in the same vertical direction, the convex surface abuts against the upper end of the top column and forces the crank seat to move downward.

Images