Rotary knob lifting folding table frame and folding table with same

Abstract

The utility model relates to the technical field of leisure articles, in particular to a knob lifting folding table frame and a folding table with the same, the knob lifting folding table frame comprises a base, a plurality of telescopic support arms and a plurality of support legs, the base comprises an upper support and a lower support, the telescopic support arms are rotatably connected to the upper support, the support legs are rotatably connected to the lower support, and the telescopic support arms are rotatably connected to the lower support. The upper support is connected with the lower support, the lower support comprises a support base and a support frame, the support base is connected with the support frame, the supporting legs are rotationally connected to the support frame through rotating shafts and elastic pieces, and the support base is provided with a lifting assembly used for driving the supporting legs to rotate around the rotating shafts to change the opening and closing angles of the supporting legs. The two ends of each transverse pipe are connected with the tops of the different supporting arms to form a supporting structure, and a bending assembly is arranged in the middle of each transverse pipe. According to the folding table frame, the whole table frame can be folded and folded, the whole support is convenient to link, and the folding effect is good.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of leisure products, and in particular to a knob-lifting folding table frame and a folding table with the table frame. Background Art

[0002] In recent years, portable outdoor leisure products have been very popular among users, and have sold well on both online and offline platforms. The biggest features of these portable leisure outdoor products are lightness and foldability, which meet the needs of convenient storage and transportation, and are very suitable for outdoor camping, fishing, etc. Common ones are folding chairs and folding tables, but some existing folding tables use folding parts to achieve folding of the table top, which can only be folded in one direction, making storage inconvenient, and the folding parts are easily damaged. In addition, the table frame of a common folding table uses a combination of telescopic tubes and cross tubes to achieve folding and unfolding, but the stability after unfolding is poor, and the volume occupied after folding is still large, which is not conducive to storage and transportation. Existing folding tables have only a few height adjustment options, and cannot achieve infinite height adjustment within a certain range, which is inconvenient for use in certain scenarios. Utility Model Content

[0003] In response to the above-mentioned problems existing in the prior art, the purpose of the present utility model is to provide a new folding table frame, which is easy to fold and unfold, and is stable and not easy to tip over when unfolded. When folded, it is compact and convenient to store and transport. The folding table frame also has an infinite height adjustment function within a certain range, which can adapt to the use in various scenarios.

[0004] Another object of the present invention is to provide a folding table with the folding table frame, wherein the table top and the folding table frame are detachably connected, which is convenient and quick, and the table top is also foldable, further reducing the entire storage volume.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a knob-lift folding table frame, comprising a base, a plurality of retractable arms and a plurality of legs, the base comprising an upper bracket and a lower bracket, the retractable arm being rotatably connected to the upper bracket, the legs being rotatably connected to the lower bracket, the upper bracket and the lower bracket being connected, the lower bracket comprising a bracket base and a bracket frame, the bracket base being connected to the bracket frame, the legs being rotatably connected to the bracket frame through a rotating shaft and an elastic member, a lifting component being provided on the bracket base for driving the legs to rotate around the rotating shaft to change the opening and closing angle of the legs, the part of the lifting component extending from the bracket base being located in the bracket frame, and also comprising a plurality of transverse tubes, the two ends of each transverse tube being respectively connected to the tops of different arms to form a support structure, and a bending component being provided in the middle of each of the transverse tubes.

[0006] Furthermore, a first component is provided at the top of the support arm, the first component is nested in the free end of the support arm, the first component is rotatably connected to the second component, the second component is connected to the first component in a manner of rotating relative to the central axis of the support arm, and the second component is rotatably connected to the cross tube.

[0007] Furthermore, each of the transverse tubes includes a first transverse tube and a second transverse tube, the bending components are connected to the first transverse tube and the second transverse tube respectively, and the first transverse tube and the second transverse tube are folded relative to each other with the middle of the bending component as the axis.

[0008] Furthermore, the bending assembly includes a first connecting member, a second connecting member, a rivet, a compression spring and a fixing pin, the first connecting member includes a columnar body embedded in the first transverse tube, and a pair of pivot plates arranged opposite to each other, the two pivot plates are arranged at one end of the columnar body, and a first positioning hole is provided on the columnar body between the two pivot plates; the second connecting member includes a plug-in portion embedded in the second transverse tube, and a pivot portion arranged at one end of the plug-in portion, the pivot portion is embedded in the gap between the two pivot plates, and the pivot portion and the two pivot plates are respectively provided with a through hole at relative positions, the rivet is embedded in the through holes of the pivot portion and the two pivot plates to form a first rotating shaft, the first connecting member and the second connecting member are rotatably connected to each other around the first rotating shaft, the plug-in portion is a columnar plug-in portion, and the middle portion of the columnar plug-in portion is axially recessed to form a plug-in The cam is fixed on the fixing pin of the locking cam, and the locking pin is fixed on the fixing pin, and a sliding buckle is provided on the side of the sliding buckle, and the sliding buckle extends out of the long hole of the columnar fixing pin, and a compression spring fixing piece is provided in the second transverse tube, and the compression spring is sleeved on the fixing pin, and one end of the compression spring is tightly against the collar, and the other end of the compression spring is tightly against the compression spring fixing piece. In the first state, the fixing pin is embedded in the first positioning hole under the elastic force of the compression spring, so that the first transverse tube and the second transverse tube are plugged in the horizontal direction; in the second state, the sliding buckle compresses the compression spring to make the fixing pin slide axially in the fixing cavity, and the fixing pin disengages from the first positioning hole, and the first connecting piece and the second connecting piece rotate around the first rotating shaft to realize relative bending of the first transverse tube and the second transverse tube.

[0009] Furthermore, the bracket frame includes a base plate and a plurality of mounting posts connected to the base plate and facing the bracket base. The bracket base is provided with a mounting platform matching the plurality of mounting posts. The mounting posts are fixed on the mounting platform to achieve the connection between the bracket frame and the bracket base. A central axis facing the upper bracket is provided in the middle of the base plate. The upper bracket is provided with a central groove matching the central axis. The central axis is embedded in the central groove and fixed by screws to achieve the connection between the upper bracket and the lower bracket. The upper bracket is also provided with a plurality of pivot parts, each of the pivot parts is provided with a pivot shaft, and the support arm is rotatably connected to the pivot part through the pivot shaft.

[0010] Furthermore, the lifting assembly includes a screw that passes through the bracket base, a knob arranged at the lower end of the screw, the side wall of the through hole on the bracket base is provided with a thread corresponding to the screw, and the upper end of the screw is provided with a hemispherical nut, gears are provided on both sides of the end of the leg, and a triangular protrusion is protruded outward from the middle of the two gears, and the rotating shaft is connected to the bracket frame after passing through the leg gear and the triangular protrusion, the elastic member is sleeved on the rotating shaft, and one end of the elastic member is tightly against the positioning hole opened on the bracket frame, and the other end of the elastic member is tightly against the leg wall. When multiple legs are connected to the bracket frame through the rotating shaft and the elastic member, the triangular protrusions of multiple legs The legs are gathered and stored inside the bracket frame. When the legs are in the retracted position, the ends of the legs are against the inner wall of the upper bracket; when the legs are in the deployed position, the hemispherical nut at the upper end of the screw is tightly against the triangular protrusions at the ends of multiple legs. When the knob screw is rotated to rise, the triangular protrusions of multiple legs are pushed out and dispersed, the angle between the legs and the axis perpendicular to the ground is reduced, and the height of the entire bracket from the ground is increased. When the knob screw is rotated to descend, the legs are gradually gathered together under the force rebound action of the elastic member, the angle between the legs and the axis perpendicular to the ground is increased, and the height of the entire bracket from the ground is reduced.

[0011] Furthermore, the gears of adjacent legs mesh with each other, so that multiple legs are linked and rotated. When the legs are unfolded to the first unfolded state relative to the base, the nut at the top of the screw abuts against the triangular protrusion at the end of the leg, and the knob in the lifting assembly is rotated. The screw moves upward, driving the top nut to move upward, pushing open the triangular protrusions gathered together at the ends of all the legs, and each leg rotates along the rotating shaft. The legs are unfolded to the second unfolded state relative to the base, and the triangular protrusions at the ends of the legs resist the upper ends of the nut, and the angle between the legs and the axis perpendicular to the ground is reduced, and the height of the entire bracket from the ground is increased; as the screw rotates and rises, the legs can be unfolded to multiple states relative to the base, thereby realizing infinite height adjustment of the legs relative to the base.

[0012] Furthermore, the number of the retractable arms is four, the number of the cross tubes is two, and the two cross tubes are arranged parallel to each other on the top of the four arms to form the support structure.

[0013] In response to the above-mentioned problems existing in the prior art, another object of the present utility model is to provide a new folding table, which includes any of the folding table frames described above and adopts the following technical solution: a folding table, having any of the folding table frames described above, including a folding aluminum table top, the folding aluminum table top is laid on a supporting structure, fixing parts are provided at both ends of the horizontal tube, and positioning protrusions are provided on the fixing parts. A second positioning hole is provided at a relative position on the back of the aluminum table top, and the positioning protrusion on the fixing part is snapped into the second positioning hole to realize the positioning of the aluminum table top.

[0014] Furthermore, the aluminum tabletop comprises multiple aluminum bars, each of which has an I-shaped connector fixed to its two end faces. Each of the I-shaped connectors has a groove on each side. Adjacent aluminum bars are connected by a connecting piece, and the ends of the connecting piece are rotatably connected to the corresponding grooves in the adjacent aluminum bars. By setting a reasonable spacing between adjacent aluminum bars, the adjacent aluminum bars can achieve an angle of rotation between 0-360 degrees.

[0015] Furthermore, it also includes a net bag, which is fixed to the upper end of the support arm through rivets.

[0016] The present invention also employs another technical solution: a folding table having any of the above-described folding table frames, including a fabric tabletop, a sleeve having a side of the fabric tabletop, a transverse tube passing through the sleeve to connect the fabric tabletop to the support structure, and a plurality of openings provided in the sleeve. The openings in the sleeve facilitate the extension of the folding assembly on the transverse tube and the supporting arms connected at both ends, thereby improving folding efficiency.

[0017] Furthermore, the side of the cloth table top is provided with a hanging bag and / or a hook.

[0018] Furthermore, the number of the retractable arms is four, and the number of the cross tubes is two. The two cross tubes are arranged parallel to each other on the top of the four arms to form the support structure. Axle sleeves are provided on opposite sides of the cloth table top. When the retractable arms are extended, the cloth table top is straightened and forms a structure that is tightly pressed against the retractable arms, thereby increasing the flatness and supporting strength of the table top.

[0019] Furthermore, it also includes a net bag, which is fixed to the upper end of the support arm through rivets.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The utility model realizes stepless adjustment of the height of the folding table frame and the folding table top through the coordinated design among the lifting components, the end of the legs, the upper bracket and the lower bracket. It has a wide range of height adjustment, is convenient for height adjustment, and has many application scenarios.

[0022] 2. The utility model adopts a retractable support arm, a linked rotating support leg and a lifting component, and multiple horizontal tubes are arranged on the top of the support arm to form a supporting structure, and cooperate with the bending component in the middle of the horizontal tube to form a foldable table frame as a whole. It can realize the folding and retracting of the entire table frame, and the entire bracket is easy to link and has a good folding effect.

[0023] 3. The utility model adopts a transverse tube including a first transverse tube and a second transverse tube, which cooperates with a bending component structure. The overall assembly is simple. The connection between the fixing pin and the positioning hole can be released by sliding the slider with one hand, so that the transverse tube can be bent, and the bending is convenient.

[0024] 4. The cross tube and the support arm of the utility model are rotatably connected through the first component and the second component. The rotating component can rotate relative to the support arm and itself respectively, which facilitates the angle adjustment between the various rods during folding and unfolding, thereby improving the folding and unfolding efficiency.

[0025] 5. The utility model designs gears on both sides of the end of the legs, and the gears of adjacent legs are engaged, so that multiple legs can be linked and a structure of mutual resistance is formed between the legs to maintain the balance of the table. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] In the drawings of the specification:

[0028] Figure 1 It is a three-dimensional schematic diagram of the folding table frame of the first embodiment;

[0029] Figure 2 It is a partially enlarged perspective schematic diagram of the folding table frame of the first embodiment;

[0030] Figure 3 Schematic diagram of the cross tube of the folding table frame of the first embodiment;

[0031] Figure 4 This is an exploded view of the transverse tube of the folding table frame of the first embodiment;

[0032] Figure 5 is a cross-sectional view of the transverse tube of the folding table frame of the first embodiment;

[0033] Figure 6 This is a schematic diagram of the base of the folding table stand of the first embodiment;

[0034] Figure 7 This is an exploded view of the base of the folding table stand of the first embodiment;

[0035] Figure 8 is a cross-sectional view of the base of the folding table frame of the first embodiment;

[0036] Figure 9 This is an exploded view of the folding table frame of the first embodiment;

[0037] Figure 10 It is a schematic perspective view of the legs of the folding table frame of the first embodiment;

[0038] Figure 11 This is an exploded view of the legs of the folding table frame of the first embodiment;

[0039] Figure 12 A partial cross-sectional view of the folding table frame according to the first embodiment;

[0040] Figure 13 is a perspective schematic diagram of a folding table according to a second embodiment;

[0041] Figure 14 is a three-dimensional schematic diagram of a folding table according to a third embodiment;

[0042] Figure 15 This is a diagram of the folding table frame of the above embodiment when it is folded;

[0043] Figure 16 A cross-sectional view of the folding table frame of the above embodiment when folded;

[0044] Figure 17 This is a diagram of the folding table in the first usage state of the above embodiment;

[0045] Figure 18 This is a diagram of the second usage state of the folding table in the above embodiment;

[0046] Figure 19 This is a partial exploded schematic diagram of the aluminum tabletop of the folding table in the above embodiment.

[0047] Reference numerals:

[0048] 1. Base; 11. Upper bracket; 111. Pivot shaft; 112. Pivot portion; 113. Center slot; 114. Screw; 12. Lower bracket; 121. Bracket base; 1211. Mounting platform; 1212. Thread; 122. Bracket frame; 1221. Base plate; 1222. Mounting column; 1223. Center axis; 1224. Positioning hole; 123. Bolt; 124. Rotating shaft;

[0049] 2. retractable arm; 21. first component; 22. second component 22;

[0050] 3. Support leg; 31. Triangular raised portion; 32. Gear; 33. Elastic member;

[0051] 4. Horizontal tube; 41. Fixing piece; 42. Positioning protrusion; 43. First horizontal tube; 44. Second horizontal tube; 441. Through hole;

[0052] 5. Bending assembly; 51. First connecting member; 511. Pivoting plate; 512. First positioning hole; 52. Second connecting member; 521. Pivoting portion; 522. Long hole; 523. Insertion cavity; 53. Rivet; 54. Compression spring; 55. Fixing pin; 56. Ring; 57. Sliding buckle; 58. Compression spring fixing member;

[0053] 7. Lifting assembly; 71. Screw; 72. Knob; 73. Hemispherical nut;

[0054] 8. Folding aluminum tabletop; 81. Aluminum strip; 82. I-shaped connector; 83. Grooved opening;

[0055] 9. Cloth tabletop; 91. Bushing; 92. Opening; 93. Hanging bag; 94. Hook;

[0056] 10. Net bag. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] In the description of the embodiments of the present invention, it should be noted that if the terms "up", "down", "left", "right", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0059] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0060] First embodiment

[0061] like Figures 1 to 12 、 Figures 15-19As shown, a folding table frame includes a base 1, multiple retractable arms 2 and multiple legs 3. The base 1 includes an upper bracket 11 and a lower bracket 12. The retractable arms 2 are rotatably connected to the upper bracket 11, and the legs 3 are rotatably connected to the lower bracket 12. The upper bracket 11 and the lower bracket 12 are connected. Specifically, the lower bracket 12 includes a bracket base 121 and a bracket frame 122. The bracket base 121 is connected to the bracket frame 122. Specifically, the bracket frame 122 includes a base plate 1221 and multiple mounting posts 1222 connected to the base plate and facing the bracket base. The bracket base 121 is provided with a mounting platform 1211 that matches the multiple mounting posts. The mounting posts 1222 are fixed to the mounting platform 1211 by bolts 123 to achieve the connection between the bracket frame 122 and the bracket base 121. Through this connection, the bracket frame 122 and the bracket base 121 form a structure that can accommodate the legs 3 and the lifting assembly 7. The entire structure is exquisite and compact.

[0062] A central axis 1223 facing the upper bracket 11 is provided in the middle of the base plate 1221. The upper bracket 11 is provided with a central groove 113 matching the central axis 1223. The central axis 1223 is embedded in the central groove 113 and fixed by screws 114 to realize the connection between the upper bracket 11 and the lower bracket 12. The upper bracket 11 is also provided with a plurality of pivot parts 112. Each pivot part 112 is provided with a pivot shaft 111. The support arm 2 is rotatably connected to the pivot part 112 via the pivot shaft 111. A truncated cone-shaped cover is also provided on the top of the upper bracket 11. The pivot shaft 111 of the upper bracket 11 can be a rivet, which penetrates the end of the support arm 2 and is then pivoted on the pivot part 112. The entire cross-section of the pivot part 112 is fan-shaped, which allows the support arm 2 to have a good rotation space inside the pivot part, facilitating the rotation of the support arm 2 and thus facilitating storage.

[0063] The support leg 3 is rotatably connected to the bracket frame 122 through the rotating shaft 124 and the elastic member 33. A lifting component 7 is provided on the bracket base 121 for driving the support leg 3 to rotate around the rotating shaft to change the opening and closing angle of the support leg. The part of the lifting component 7 extending from the bracket base is located in the bracket frame.

[0064] The lifting assembly 7 includes a screw 71 that passes through the bracket base, a knob 72 arranged at the lower end of the screw 71, a through hole side wall on the bracket base 121 is provided with a thread 1212 corresponding to the screw 71, and a hemispherical nut 73 is provided at the upper end of the screw 71. Gears 32 are provided on both sides of the end of the leg 3, and a triangular protrusion 31 is provided at the middle of the two gears 32 protruding outward. The rotating shaft 124 penetrates the leg gear 32 and the triangular protrusion 31 and is connected to the bracket frame 122. The elastic member 33 is sleeved on the rotating shaft 124, and one end of the elastic member 33 is tightly against the positioning hole 1224 opened on the bracket frame 122, and the other end of the elastic member is tightly against the wall of the leg 3. When multiple legs 3 are connected to the bracket frame 122 through the rotating shaft 124 and the elastic member 33, the triangular protrusions 31 of the multiple legs 3 are gathered and stored inside the bracket frame 122. When the legs 3 are in the retracted position, the ends of the legs 3 are against the inner wall of the upper bracket; in this embodiment, the elastic member 33 is a torsion spring.

[0065] refer to Figure 10 When the legs 3 are in the deployed position, the hemispherical nut 73 at the upper end of the screw 71 abuts against the triangular protrusions 31 at the ends of the multiple legs. When the knob 72 and screw 71 are rotated upward, the triangular protrusions 31 of the multiple legs 3 are pushed outward and dispersed, reducing the angle between the legs 3 and the axis perpendicular to the ground, and raising the height of the entire lower bracket 12 from the ground. When the knob 72 and screw 71 are rotated downward, the triangular protrusions 31 of the legs 3 gradually converge due to the force rebounding from the elastic member, increasing the angle between the legs 3 and the axis perpendicular to the ground, and lowering the height of the entire lower bracket 12 from the ground. The legs 3 have a U-shaped cross-section. The U-shaped legs 3 save material and are lightweight and compact.

[0066] In this embodiment, the gears of adjacent legs 3 mesh with each other, so that multiple legs 3 are linked and rotated. When the legs 3 are unfolded to the first unfolded state relative to the base 1, the nut 73 at the top of the screw 71 abuts against (tangent to) the triangular protrusion 31 at the end of the leg 4. The knob in the lifting assembly is rotated, and the screw 71 moves upward to drive the top nut 73 to move upward, pushing open the triangular protrusions 31 gathered together at the ends of all the legs 3 (continue to maintain tangency, and the tangent point changes), so that each leg 3 rotates along the rotating shaft 124, and the leg 3 rotates relative to the base. 1 is unfolded to the second unfolded state, the triangular protrusion 31 at the end of the leg 3 is pressed against the upper end of the nut 73, and the angle between the leg 3 and the axis perpendicular to the ground is reduced, and the height of the entire base 1 from the ground is increased; as the screw 71 rotates and rises and falls, the height of the nut 73 is driven to rise and fall, and the tangent point of the triangular protrusion 31 at the end of the leg 3 and the nut 73 is continuously changed, so that the leg 3 can be unfolded to multiple states relative to the base 1 (not limited to the first state or the second state, there are many states in between), thereby realizing stepless height adjustment of the leg 3 relative to the base 1.

[0067] The folding table frame of this embodiment also includes multiple transverse tubes 4, each of which is connected at both ends to the top of a different arm 2 to form a support structure. A bending component 5 is provided in the middle of each transverse tube 4. In this embodiment, there are four retractable arms 2 and two transverse tubes 4, which are arranged parallel to each other at the top of the four arms 2 to form the support structure.

[0068] In this embodiment, a first component 21 is provided on the top of the support arm 2. The first component 21 is a plastic part in this embodiment, and has a thread on the bottom. The first component 21 is nested in the free end of the support arm 2 and is screwed into the support arm 2 through the thread to form a closed end. The first component 21 is rotatably connected to the second component 2262. The second component 2262 is connected to the first component 21 in a manner that rotates relative to the central axis of the support arm 2. The second component 2262 and the second component 22 are rotatably connected to the cross tube 4. By the rotatable connection between the first component 21 and the second component 2262, and the rotatable connection between the second component 22 and the cross tube 4, during the bending process, the second component 2262 rotates relative to the central axis of the support arm 2 to adjust the relative position of the support arm 2 and the cross bar, making it easier to fold. The second component 2262 is designed as a triangular structure, with one of its two adjacent sides connected to the first component and the other side connected to the cross tube.

[0069] In this embodiment, each of the transverse tubes 4 includes a first transverse tube 43 and a second transverse tube 44. The bending assembly 5 is connected to the first transverse tube 43 and the second transverse tube 44 respectively. The first transverse tube 43 and the second transverse tube 44 are folded relative to each other with the middle of the bending assembly 5 as the axis. The bending assembly 5 includes a first connecting member 51, a second connecting member 52, a rivet 53, a compression spring 54 and a fixing pin 55. The first connecting member 51 includes a columnar body embedded in the first transverse tube 43, and a pair of oppositely arranged pivot plates 511. The two pivot plates 511 are provided at one end of the columnar body. A first positioning hole 512 is provided on the columnar body between the two pivot plates 511. The second connecting member 52 includes an inserting portion embedded in the second transverse tube 44, and a pivoting portion provided at one end of the inserting portion. 521, the pivot portion 521 is embedded in the gap between the two pivot pieces 511, the pivot portion 521 and the two pivot pieces 511 are respectively provided with a through hole at a relative position, the rivet 53 is embedded in the pivot portion 521 and the through holes of the two pivot pieces 511 to form a first rotating shaft, the first connecting member 51 and the second connecting member 52 are connected to each other around the first rotating shaft, the plug-in portion is a columnar plug-in portion, the middle part of the columnar plug-in portion is axially recessed to form a plug-in cavity 523, the side wall of the columnar plug-in portion is provided with a through hole to the plug-in cavity 52 3, adapted to the second transverse tube 43 corresponding position is provided with a through hole 441, the fixing pin 55 is slidably set in the plug cavity 523, the fixing pin 55 is fixed with a collar 56, the collar 56 side is provided with a slide buckle 57, the slide buckle 57 extends out of the long hole 522 of the columnar plug portion, the second transverse tube 44 is provided with a compression spring fixing member 58, the compression spring 54 is sleeved on the fixing pin 55, one end of the compression spring 54 is tightly against the collar 56, the other end of the compression spring 54 is Tightly resting on the compression spring fixing member 58, in the first state, the fixing pin 55 is embedded in the first positioning hole 512 under the elastic force of the compression spring 54, so that the first cross tube 43 and the second cross tube 44 are plugged in the horizontal direction; in the second state, the sliding slider 57 compresses the compression spring 54 to make the fixing pin 55 slide axially in the plug-in cavity 523, and the fixing pin 55 disengages from the first positioning hole 512, and the first connecting member 51 and the second connecting member 52 rotate around the first rotating axis, so that the first cross tube 43 and the second cross tube 44 are bent relative to each other.

[0070] The operating principle of the first embodiment is as follows:

[0071] refer to Figures 15-18As shown, in the folded state (third state) of the folding table frame, the folded cross tube 4 is pulled open, which in turn drives the telescopic arm 2 to stretch and pull open. When the first cross tube 43 and the second cross tube 44 of the cross tube 4 are opened to the same horizontal line, the fixing pin 55 is embedded in the first positioning hole 512 under the elastic force of the compression spring 54, so that the first cross tube 43 and the second cross tube 44 are plugged in the horizontal direction to form a support structure for supporting the table top; the telescopic arm 2, the rotating leg 3 and the base 1 cooperate with each other, and multiple cross tubes 4 are arranged on the top of the arm 2 to form a support structure, which cooperates with the bending component 5 in the middle of the cross tube 4 to form a foldable table frame as a whole, which can realize the folding and retraction of the entire table frame, and the entire bracket is easy to link and has a good folding effect.

[0072] The legs 3 are rotated and pulled out, and the legs 3 rotate around the rotating shaft 124 and extend outward. The gears 32 on the adjacent legs 3 are engaged, and all the legs 3 are linked and extend outward. When the legs 3 are unfolded to the first state relative to the base 1, the nut 73 on the top of the screw 71 abuts against the triangular protrusion 31 at the end of the leg 4. At this time, the legs 3 are temporarily extended outward again. At this time, the height of the top of the entire folding table frame from the base surface (bottom surface) is the first height, and the base 1 is the lowest from the base surface (ground), which is the first height. The knob 72 in the rotating lifting assembly moves the screw 71 upward, driving the top nut 73 to move upward, pushing open the triangular protrusions 31 gathered together at the ends of all the legs 3, and each leg 3 rotates along the rotating shaft 124. The legs 3 are retracted relative to the base 1, and the triangular protrusions 31 at the ends of the legs 3 are resisted at the upper end of the nut 73, and the angle between the legs 3 and the axis perpendicular to the ground is reduced, and the height of the entire base 1 from the ground gradually increases; as the screw 71 rotates and rises, the legs 3 can be expanded to multiple states relative to the base 1, realizing infinite height adjustment of the legs 3 relative to the base 1. When the screw 71 no longer rises, the triangular protrusion 31 at the end of the leg 3 abuts against the nut 73. At this time, the base 1 is at the highest height from the base surface (ground), which is the second height. The second height is greater than the first height. Between the first and second heights, the height of the screw 71 can be adjusted by gradually rotating the knob 72, so that the hemispherical nut 73 pushes against the triangular protrusion 31 of the leg 3 to move up and down. In conjunction with the rebound effect of the elastic member 33 on the leg 3, the leg 3 is expanded or retracted toward the base 1 around the rotating shaft 124, thereby achieving infinite height adjustment of the folding table frame between the first and second heights. The bending component 5 structure is simple to assemble as a whole. By sliding the slider 57 with one hand, the fixing pin 55 can be released from the positioning hole, thereby achieving horizontal tube bending, which is convenient for bending.

[0073] Second embodiment

[0074] refer to Figures 1-13As shown, this embodiment is a new folding table, which includes the folding table frame of the first embodiment. Of course, in other embodiments, the folding table can also adopt other folding table frames involved in this patent and is not limited to the folding table frame of the first embodiment. It includes a folding aluminum table top 8, which is laid on a support structure. The two ends of the horizontal tube 4 are provided with fixing members 41, and the fixing members 41 are provided with positioning protrusions 42. The back of the aluminum table top is provided with a second positioning hole at an opposite position. The positioning protrusion 42 on the fixing member 41 is snapped into the interior of the second positioning hole to achieve the positioning of the aluminum table top.

[0075] In this embodiment, the aluminum tabletop comprises a plurality of aluminum strips 81, each of which is fixed with an I-shaped connector 82 on both ends. Each of the I-shaped connectors 82 has a groove 83 on either side. Adjacent aluminum strips 81 are connected by a connecting piece, the ends of which are rotatably connected to the corresponding grooves 83 in adjacent aluminum strips 81. By setting a reasonable spacing between adjacent aluminum strips 81, adjacent aluminum strips 81 can achieve an angle of rotation between 0-360 degrees.

[0076] In this embodiment, a net bag 10 is further included, and the net bag 10 is fixed to the upper end of the support arm 2 through a rivet 53.

[0077] The implementation principle of the second embodiment is to spread out the aluminum table top, and place the aluminum strips 81 on the two horizontal tubes in a cross-shaped manner. Then, the aluminum strips 81 are rotated through the I-shaped connectors 82. The entire aluminum strips 81 are spliced ​​and laid to form a table top panel, which is placed on the two horizontal tubes 4. At the ends of the horizontal tubes 4, the corresponding aluminum strips 81 are provided with positioning holes that are embedded in the positioning protrusions 42 at the ends of the horizontal tubes to prevent the table top from displacement.

[0078] Third embodiment

[0079] refer to Figure 14 As shown, the folding table frame of the third embodiment is basically the same as the second embodiment, and also adopts the folding table frame of the first embodiment. The number of the retractable arms 2 is four, and the number of the transverse tubes 4 is two. The two transverse tubes 4 are arranged parallel to each other on the top of the four arms 2 to form the support structure. The difference is that this embodiment adopts a cloth table top 9, and the side of the cloth table top 9 has a shaft sleeve 91. When in use, the transverse tube 4 is passed through the shaft sleeve 91 to achieve the connection between the cloth table top and the support structure. The shaft sleeve 91 is provided with multiple openings. The shaft sleeve is provided with openings to facilitate the extension of the folding assembly on the transverse tube and the arms connected at both ends, thereby improving the folding efficiency. The side of the cloth table top 9 is provided with a hanging bag and / or a hook. It also includes a net bag 10, which is fixed to the upper end of the arm 2 by a rivet 53.

[0080] In this embodiment, shaft sleeves 91 are provided on opposite sides of the cloth table top. When the telescopic arm 2 is extended, the cloth table top is stretched and forms a structure tightly abutting against the telescopic arm 2, thereby increasing the flatness and supporting strength of the table top.

[0081] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above and that the present application can be implemented in other specific forms without departing from the essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A knob-lifting folding table frame, characterized in that: The base comprises a base, a plurality of retractable arms and a plurality of legs, the base comprises an upper bracket and a lower bracket, the retractable arm is rotatably connected to the upper bracket, the leg is rotatably connected to the lower bracket, the upper bracket is connected to the lower bracket, the lower bracket comprises a bracket base and a bracket frame, the bracket base is connected to the bracket frame, the leg is rotatably connected to the bracket frame through a rotating shaft and an elastic member, a lifting component for driving the leg to rotate around the rotating shaft to change the opening and closing angle of the leg is provided on the bracket base, the part of the lifting component extending from the bracket base is located in the bracket frame, and a plurality of transverse tubes are also included, the two ends of each transverse tube are respectively connected to the top of different arms to form a supporting structure, and a bending component is provided in the middle of each transverse tube.

2. The knob-lifting folding table frame according to claim 1, characterized in that: The end of the support arm is provided with a first component, which is nested in the free end of the support arm. The first component is rotatably connected to the second component, which is connected to the first component in a manner of rotating relative to the central axis of the support arm, and the second component is rotatably connected to the cross tube.

3. The knob-lifting folding table frame according to claim 1, characterized in that: Each of the transverse tubes comprises a first transverse tube and a second transverse tube, the bending components are connected to the first transverse tube and the second transverse tube respectively, and the first transverse tube and the second transverse tube are folded relative to each other with the middle of the bending component as the axis.

4. The knob-lifting folding table frame according to claim 3, characterized in that: The bending assembly includes a first connecting member, a second connecting member, a rivet, a compression spring and a fixing pin, the first connecting member includes a columnar body embedded in the first transverse tube, and a pair of pivotal plates arranged opposite to each other, the two pivotal plates are arranged at one end of the columnar body, and a first positioning hole is provided on the columnar body at a position between the two pivotal plates; the second connecting member includes an inserting portion embedded in the second transverse tube, and a pivoting portion arranged at one end of the inserting portion, the pivoting portion is embedded in the gap between the two pivotal plates, and the pivoting portion and the two pivotal plates are respectively provided with through holes at relative positions, the rivet is embedded in the through holes of the pivoting portion and the two pivotal plates to form a first rotating shaft, the inserting portion is a columnar inserting portion, the middle part of the columnar inserting portion is axially recessed to form an inserting cavity, and the side wall of the columnar inserting portion is provided with a through hole The cam is provided with a locking plate which is secured on a slit in the locking cam and has a locking cam on the side of the locking cam.

5. The knob-lifting folding table frame according to claim 1, characterized in that: The bracket frame includes a base plate and a plurality of mounting posts connected to the base plate and facing the bracket base. The bracket base is provided with a mounting platform matching the plurality of mounting posts. The mounting posts are fixed on the mounting platform to achieve the connection between the bracket frame and the bracket base. A central axis facing the upper bracket is provided in the middle of the base plate. The upper bracket is provided with a central groove matching the central axis. The central axis is embedded in the central groove and fixed by screws to achieve the connection between the upper bracket and the lower bracket. The upper bracket is also provided with a plurality of pivot parts. Each of the pivot parts is provided with a pivot shaft. The support arm is rotatably connected to the pivot part via the pivot shaft.

6. The knob-lifting folding table frame according to claim 5, characterized in that: The lifting assembly includes a screw that passes through the bracket base and a knob arranged at the lower end of the screw. The side wall of the through hole on the bracket base is provided with a thread corresponding to the screw, and the upper end of the screw is provided with a hemispherical nut. Gears are provided on both sides of the leg ends, and a triangular protrusion protrudes outward from the middle of the two gears. The rotating shaft penetrates the leg gear and the triangular protrusion and is connected to the bracket frame. The elastic member is sleeved on the rotating shaft, and one end of the elastic member is tightly against the positioning hole opened on the bracket frame, and the other end of the elastic member is tightly against the leg wall. When multiple legs are connected to the bracket frame through the rotating shaft and the elastic member, the triangular protrusions of multiple legs are gathered and stored inside the bracket frame. When the legs are in the retracted position, the leg ends are against the inner side wall of the upper bracket; when the legs are in the unfolded position, the hemispherical nut at the upper end of the screw is tightly against the triangular protrusions at the ends of multiple legs.

7. The knob-lifting folding table frame according to claim 6, characterized in that: The gears of adjacent legs mesh with each other, so that the multiple legs are linked.

8. A knob-lifting folding table frame according to any one of claims 1 to 7, characterized in that: The number of the retractable arms is four, the number of the cross tubes is two, and the two cross tubes are arranged parallel to each other on the top of the four arms to form the support structure.

9. A folding table having a knob-lifting folding table frame as claimed in any one of claims 1 to 8, characterized in that: It comprises a folding aluminum table top, which is laid on a supporting structure, fixing pieces are arranged at both ends of the transverse tube, positioning protrusions are arranged on the fixing pieces, a second positioning hole is arranged at a relative position on the back of the aluminum table top, and the positioning protrusions on the fixing pieces are inserted into the second positioning hole.

10. A folding table according to claim 9, characterized in that: The aluminum tabletop includes a plurality of aluminum bars, each of which is fixedly provided with an I-shaped connector on both end surfaces of the aluminum bars, each of which has a groove opening on both sides, and adjacent aluminum bars are connected by a connecting piece, and the two ends of the connecting piece are respectively rotatably connected to the inside of the two corresponding groove openings of adjacent aluminum bars.

11. A folding table according to claim 9, characterized in that: It also includes a net bag, which is fixed to the upper end of the support arm through rivets.

12. A folding table having a knob-lifting folding table frame as claimed in any one of claims 1 to 7, characterized in that: It comprises a cloth table top, the side of which is provided with a shaft sleeve, the transverse tube passes through the shaft sleeve to achieve the connection between the cloth table top and the supporting structure, and the shaft sleeve is provided with a plurality of openings.

13. The folding table according to claim 12, characterized in that: The side of the cloth table top is provided with a hanging bag and / or a hook.

14. The folding table according to claim 12, characterized in that: There are four retractable arms and two transverse tubes. Two transverse tubes are arranged parallel to each other on the top of the four arms to form the support structure. Bushings are provided on opposite sides of the cloth table top. When the retractable arms are in the extended state, the cloth table top is stretched straight to form a structure tightly abutting against the retractable arms.

15. The folding table according to claim 12, characterized in that: It also includes a net bag, which is fixed to the upper end of the support arm through rivets.

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