A foldable desk and chair that is easy to store

Abstract

The present invention relates to a desk and chair, and in particular to a foldable desk and chair that is easy to store. The purpose of the present invention is to provide a foldable desk and chair that is easy to store and simple to operate. The present invention provides such a foldable desk and chair that is easy to store, including support legs, a first support rod, a placement board, a table top, etc. The upper parts of the support legs on both the front and rear sides are slidably provided with first support rods, a table top for placing books is provided between the tops of the first support rods, and a placement board for storing school bags is provided at the bottom of the table top, and the placement board is located between the two first support rods. The present invention uses a motor as a driving force, which can drive the seat plate to move downward and move to the right for folding, and can also drive the back plate to rotate 90 degrees to the right for folding, and can also drive the table top to move downward for folding, so that the folding operation of the entire desk and chair can be completed, and the operation is simple and convenient.

Description

Technical Field

[0001] The invention relates to a desk and chair, in particular to a foldable desk and chair which is convenient to store. Background Art

[0002] At present, most of the desks and chairs used by students are made separately, resulting in the desks and chairs occupying a large space in the classroom, and the desks and chairs cannot be folded, which is inconvenient for students to carry and store, reducing the utilization rate of the desks and chairs.

[0003] Patent application CN213849395U, published on August 3, 2021, discloses a foldable desk and chair, including a desk board, the front and back of the desk board are provided with grooves, the inside of the groove is rotatably connected with a rotating block, the opposite sides of the two rotating blocks are fixedly installed with a rotating rod, the opposite ends of the two rotating rods are fixedly installed with a circular block, the front and back of the desk board are movably installed with a support column, the left side of the support column is rotatably connected with a support rod, the bottom of the desk board is fixedly installed with two card blocks, the bottom of the two card blocks are provided with a card slot, a bottom plate is fixedly installed between the bottoms of the two support columns, the opposite sides of the two support columns are rotatably connected with a connecting rod, and the desk and chair board is fixedly installed between the right sides of the two connecting rods. The foldable desk and chair greatly reduces the space occupied by the desk board and the desk and chair board, is convenient for students to carry and store, and improves the utilization rate of the desks and chairs. Although the above-mentioned desks and chairs can be folded, when folding the desks and chairs, students are required to move the two support rods out of the two slots so that the two support rods lose their supporting effect on the desk board, and then the desk board can be rotated ninety degrees to the left to fold the desk board, and then the two clips are pressed into the inside of the second sleeve, and then the second sleeve is moved upward to be retracted, and then the connecting rod is rotated upward ninety degrees. The operation is relatively complicated.

[0004] In summary, there is an urgent need for a foldable desk and chair that is easy to operate and convenient to store to solve the above problems. Summary of the invention

[0005] In order to overcome the disadvantage of the existing foldable desks and chairs that they are complicated to operate during use, the purpose of the present invention is to provide a foldable desk and chair that is easy to operate and convenient to store.

[0006] The present invention is achieved through the following technical approaches:

[0007] A foldable desk and chair for easy storage includes a support foot, a first support rod, a placement board, a table board, a first guide rod, a second support rod, a first connecting rod, a rotating rod, a seat board, a backing board, a retracting assembly, a lowering assembly and a rotating assembly. The upper parts of the support feet on both sides of the front and rear are slidably provided with the first support rod, a table board for placing books is provided between the tops of the first support rods, a placement board for storing school bags is provided at the bottom of the table board, the placement board is located between the two first support rods, two second support rods are provided, and the second support rods are symmetrically arranged front and back. The second support rods are both located on the left side of the support foot, and the lower part of the front side of the rear support foot A first guide rod is provided, and a second support rod at the rear side is slidably connected to the first guide rod, and the seat plate is located directly above the two second support rods, and first connecting rods are symmetrically rotatably provided on the front and rear sides of the lower part of the seat plate and the inner sides of the second support rods. The number of first connecting rods is eight, and rotating rods are rotatably provided between the inner sides of the four first connecting rods on the same side on the left and right. The number of rotating rods is two, and a back plate is rotatably provided on the left side of the upper part of the seat plate, a retraction component for folding the seat plate is provided on the supporting foot, a lowering component for driving the table plate to move downward and fold up is provided on the supporting foot, and a rotating component for driving the back plate to rotate right and fold up is provided on the seat plate.

[0008] Optionally, the retraction assembly includes a motor, a screw rod, a second guide rod, a first slide rail, a first spring, a first guide sleeve, a second guide sleeve and a second slide rail. A motor is provided on the right side of the lower part of the front support foot, and a screw rod is provided on the output shaft of the motor. The screw rod is rotatably connected to the front support foot, and the second support rod on the front side is threadedly connected to the screw rod. A second guide rod is provided at the lower part of the support foot, and the first slide rail is slidably provided on the left side of the second guide rod. The first spring is wound around the second guide rod, and the two ends of the first spring are respectively connected to the second guide rod and the first slide rail, and a first guide sleeve is provided in the middle of the front and rear sides of the bottom of the seat plate, and the lower part of the first guide sleeve is slidably provided with a second guide sleeve, and the lower part of the second guide sleeve is slidably provided with a second slide rail, the second slide rail is slidably connected to the adjacent first slide rail, and the rotating rod is slidably connected to the two second slide rails.

[0009] Optionally, the lowering assembly includes a second spring, a pull rope, a roller and a second connecting rod. A second spring is provided between the bottom of the first support rod and the adjacent supporting foot. A pull rope is provided between the lower right part of the first support rod and the adjacent supporting foot. A roller is rotatably provided on the right side of the lower part of the supporting foot. A second connecting rod is provided on the right side of the top of the second support rod. The second connecting rod will contact the pull rope when it moves to the right.

[0010] Optionally, the rotating assembly includes a torsion spring, a third connecting rod, a third spring and a fourth connecting rod. Two torsion springs are arranged between the lower middle part of the backrest plate and the seat plate. A third connecting rod is symmetrically slidably arranged on the left side of the seat plate. The upper part of the third connecting rod is in contact with the right half of the elliptical limit blocks on the front and rear sides of the backrest plate. A third spring is arranged between the third connecting rod and the seat plate. A fourth connecting rod is arranged on the upper left part of the two first connecting rods on the upper left side. The fourth connecting rod is in contact with the bottom of the adjacent third connecting rod.

[0011] Optionally, it also includes a walking assembly for facilitating movement, the walking assembly includes a third guide rod, a connecting rod, a fourth spring, a rotating shaft and wheels, the third guide rods are provided on both sides of the left and right sides of the lower part of the supporting foot, a connecting rod is slidably provided between the two third guide rods on the same side laterally, the first supporting rod will contact the connecting rod when it moves downward, the fourth spring is wound around the third guide rod, the two ends of the fourth spring are respectively connected to the supporting foot and the connecting rod, the left and right sides of the lower part of the connecting rod are rotatably provided with rotating shafts, and wheels are provided on the rotating shafts.

[0012] Optionally, it also includes a pulling assembly for facilitating students to pull the foldable and storable desks and chairs to move, the pulling assembly includes a slider, a pull rod, a push rod, a fifth spring, a first block and a sixth spring, a slider is slidingly provided on the left side of the inner part of the table board, a pull rod is rotatably provided on the right side of the slider, a push rod is slidingly provided on the right side of the pull rod, a fifth spring is symmetrically provided front and back between the push rod and the pull rod, a first block is symmetrically provided front and back on the right side of the inner part of the table board, the first blocks clamp the pull rods, the first blocks are in contact with the push rods, and a sixth spring is provided between the outer side of the first block and the table board.

[0013] Optionally, a clamping assembly for ensuring the stability of the table top is also included, the clamping assembly includes a third support rod, a second clamping block, a pull block and a seventh spring, the third support rod is provided at the lower left part of the first support rod on the front side, the second clamping block is slidably provided at the upper part of the third support rod, the bottom of the second clamping block is in contact with the top of the front support foot, a pull block is provided on the left side of the second clamping block, and a seventh spring is provided between the second clamping block and the third support rod.

[0014] Optionally, the right part of the pull rod is covered with a rubber sheath.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention uses a motor as a driving force to drive the seat plate to move downward and move to the right for folding, and can also drive the back plate to rotate 90 degrees to the right for folding, and can also drive the table plate to move downward for folding, thereby completing the folding operation of the entire desk and chair, and the operation is simple and convenient.

[0017] 2. When the table top of the present invention moves downward and is folded, the wheels can be driven to move downward and contact the ground, thereby making it convenient for students to move the entire desk and chair.

[0018] 3. The present invention can pull the pull rod to the right and then rotate the pull rod upward, so that the entire desk and chair can be pulled to move.

[0019] 4. The front support legs of the present invention can block the bottom of the second block, thereby ensuring the stability of the table top during students' learning and preventing the table top from moving downward due to heavy books. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of a first partial three-dimensional structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the installation of the retracting assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the retracting assembly of the present invention.

[0025] Figure 6 This is a schematic diagram of the installation of the lowering assembly of the present invention.

[0026] Figure 7 It is a schematic diagram of the installation of the rotating assembly of the present invention.

[0027] Figure 8 It is a schematic diagram of the enlarged structure of A of the present invention.

[0028] Fig. 9 It is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0029] Fig.10 It is a schematic diagram of the installation of the walking assembly of the present invention.

[0030] Fig.11 It is a schematic diagram of the enlarged structure of B of the present invention.

[0031] Fig.12 This is a schematic structural diagram of the walking assembly of the present invention from another perspective.

[0032] Fig.13 It is a schematic diagram of the partial cross-sectional structure of the pulling assembly of the present invention.

[0033] Fig.14It is a schematic diagram of the enlarged structure of C of the present invention.

[0034] Fig.15 It is a partial three-dimensional structural schematic diagram of the pulling assembly of the present invention.

[0035] Fig.16 It is a schematic diagram of the installation of the clamping assembly of the present invention.

[0036] The meanings of the reference numerals in the figure are as follows: 1: supporting foot, 2: first supporting rod, 3: placing plate, 4: table top, 5: first guide rod, 6: second supporting rod, 7: first connecting rod, 8: rotating rod, 9: seat plate, 10: back plate, 11: retraction assembly, 111: motor, 112: screw rod, 113: second guide rod, 114: first slide rail, 115: first spring, 116: first guide sleeve, 117: second guide sleeve, 118: second slide rail, 12: lowering assembly, 121: second spring, 122: pull rope, 123: roller, 124: second connecting rod, 1 3: Rotating assembly, 131: Torsion spring, 132: Third connecting rod, 133: Third spring, 134: Fourth connecting rod, 14: Walking assembly, 141: Third guide rod, 142: Connecting rod, 143: Fourth spring, 144: Rotating shaft, 145: Wheel, 15: Pulling assembly, 151: Slider, 152: Pull rod, 153: Push rod, 154: Fifth spring, 155: First clamping block, 156: Sixth spring, 16: Clamping assembly, 161: Third support rod, 162: Second clamping block, 163: Pull block, 164: Seventh spring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0038] Example 1

[0039] A foldable desk and chair that is easy to store, refer to Figure 1-Figure 9, including a supporting foot 1, a first supporting rod 2, a placing plate 3, a table board 4, a first guide rod 5, a second supporting rod 6, a first connecting rod 7, a rotating rod 8, a seat plate 9, a backing plate 10, a retracting assembly 11, a lowering assembly 12 and a rotating assembly 13. The upper parts of the supporting feet 1 on both sides of the front and rear are slidably provided with the first supporting rod 2, a table board 4 is welded between the tops of the first supporting rods 2, a placing plate 3 is provided at the bottom of the table board 4, and the placing plate 3 is located between the two first supporting rods 2. Students can put their schoolbags into the placing plate 3, and then place the books on the top of the table board 4 for study. There are two second supporting rods 6, and the second supporting rods 6 are symmetrically arranged front and back. The rods 6 are all located on the left side of the supporting foot 1, and a first guide rod 5 is welded to the lower front part of the rear supporting foot 1, and the second supporting rod 6 at the rear is slidably connected to the first guide rod 5. The seat plate 9 is located directly above the two second supporting rods 6, and the front and rear sides of the lower part of the seat plate 9 and the inner side of the second supporting rod 6 are symmetrically rotatably provided with first connecting rods 7, and the number of the first connecting rods 7 is eight. The inner sides of the four first connecting rods 7 on the same side are rotatably provided with rotating rods 8, and the number of the rotating rods 8 is two. A back plate 10 is rotatably provided on the upper left side of the seat plate 9, a retraction component 11 is provided on the supporting foot 1, a lowering component 12 is provided on the supporting foot 1, and a rotating component 13 is provided on the seat plate 9.

[0040] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The retraction assembly 11 includes a motor 111, a screw rod 112, a second guide rod 113, a first slide rail 114, a first spring 115, a first guide sleeve 116, a second guide sleeve 117 and a second slide rail 118. The motor 111 is bolted to the right side of the lower part of the front support foot 1. The output shaft of the motor 111 is provided with a screw rod 112. The screw rod 112 is rotatably connected to the front support foot 1. The second support rod 6 on the front side is threadedly connected to the screw rod 112. The lower part of the support foot 1 is welded with a second guide rod 113. The left side of the second guide rod 113 is slidably provided with a first slide rail 114. The second guide rod 113 is wound with a first spring 115. The first spring The two ends of 115 are respectively connected to the second guide rod 113 and the first slide rail 114, and the first guide sleeve 116 is provided in the middle of the front and rear sides of the bottom of the seat plate 9, and the lower part of the first guide sleeve 116 is slidably provided with a second guide sleeve 117, and the lower part of the second guide sleeve 117 is slidably provided with a second slide rail 118, and the second slide rail 118 is slidably connected to the adjacent first slide rail 114. Starting the motor 111 can drive the second slide rail 118 to move to the right, and under the guidance of the first slide rail 114, the second slide rail 118 can be driven to move downward, so that the seat plate 9 can be driven to move downward and retracted, and the rotating rod 8 is slidably connected to the two second slide rails 118.

[0041] Reference Figure 1 , Figure 2 and Figure 6 The lowering component 12 includes a second spring 121, a pull rope 122, a roller 123 and a second connecting rod 124. A second spring 121 is provided between the bottom of the first support rod 2 and the adjacent support foot 1, a pull rope 122 is provided between the lower right part of the first support rod 2 and the adjacent support foot 1, a roller 123 is rotatably provided on the right side of the lower part of the support foot 1, and a second connecting rod 124 is welded on the right side of the top of the second support rod 6. The second connecting rod 124 moves to the right and contacts with the pull rope 122, thereby pulling the first support rod 2 downward, thereby driving the table board 4 to move downward and fold up.

[0042] Reference Figure 1 , Figure 2 , Figure 7 and Figure 8 The rotating assembly 13 includes a torsion spring 131, a third connecting rod 132, a third spring 133 and a fourth connecting rod 134. Two torsion springs 131 are arranged between the lower middle of the back plate 10 and the seat plate 9. The left side of the seat plate 9 is symmetrically slidably provided with a third connecting rod 132. The upper part of the third connecting rod 132 is in contact with the right half of the elliptical limit block on the front and rear sides of the back plate 10. The downward movement of the third connecting rod 132 can drive the back plate 10 to rotate right and retract. A third spring 133 is arranged between the third connecting rod 132 and the seat plate 9. The upper left part of the two first connecting rods 7 on the upper left side is welded with a fourth connecting rod 134, and the fourth connecting rod 134 is in contact with the bottom of the adjacent third connecting rod 132.

[0043] Initially, the third spring 133 is in a compressed state. When the student needs to use the desk and chair, he can sit on the seat plate 9, and then put the schoolbag into the placement plate 3, and then put the book on the top of the table board 4 to study. When tired of studying, he can lean on the backrest 10 to rest. The seat plate 9 can limit the backrest 10, and the backrest 10 will not rotate to the left. When the student does not need to use the desk and chair, he can leave the seat plate 9, and then take away the book and schoolbag, and then start the motor 111, control the output shaft of the motor 111 to rotate forward, drive the screw rod 112 to rotate forward, thereby driving the second support rod 6 on the front side to move to the right, and then drive the first connecting rod 7, the rotating rod 8, the seat plate 9, the backrest 10 and the second support rod 6 on the rear side to move to the right, and the second support rod 6 drives the second connecting rod 7, the rotating rod 8, the seat plate 9, the backrest 10 and the second support rod 6 on the rear side to move to the right. The rod 124 moves to the right, and at the same time, the seat plate 9 drives the first guide sleeve 116, the second guide sleeve 117 and the second slide rail 118 to move to the right. At this time, under the guiding action of the first slide rail 114, the first slide rail 114 will squeeze the second slide rail 118 to move downward, thereby driving the first guide sleeve 116 and the second guide sleeve 117 to move downward, and the second slide rail 118 will also drive the rotating rod 8 to move inward, thereby driving the first connecting rod 7 to rotate inward and fold up, and the first guide sleeve 116, the second guide sleeve 117 and the second slide rail 118 can be retracted, and the first connecting rod 7 on the upper left side drives the fourth connecting rod 134 to rotate, so that the fourth connecting rod 134 is separated from the third connecting rod 132, and the third spring 133 returns to its original state, driving the third connecting rod 132 to move downward. The elastic force of 133 is greater than the elastic force of the torsion spring 131, and then the third connecting rod 132 squeezes the support plate 10 to rotate 90 degrees to the right and fold it up, and the torsion spring 131 is deformed. When the second slide rail 118 moves to the lowermost side, the second slide rail 118 drives the first slide rail 114 to move to the right, and the first spring 115 is compressed. When the second connecting rod 124 contacts the pull rope 122, it will pull the pull rope 122 to move to the right, and the roller 123 plays a guiding role. The pull rope 122 will drive the first support rod 2 to move downward, and the second spring 121 will be compressed, thereby driving the placement plate 3 and the table board 4 to move downward and fold them up. When the entire desk and chair are folded up, turn off the motor 111, so as to reduce the space occupied by the desk and chair, which is convenient for students to store and move the desk and chair. When the student needs to use the desk and chair again, the motor 111 can be started to control the output shaft of the motor 111 to reverse, drive the screw rod 112 to reverse, thereby driving the second support rod 6 on the front side to move to the left and reset, and then drive the first connecting rod 7, the rotating rod 8, the seat plate 9, the back plate 10 and the second support rod 6 on the rear side to move to the left and reset, the second support rod 6 drives the second connecting rod 124 to move to the left and reset, at the same time, the seat plate 9 drives the first guide sleeve 116, the second guide sleeve 117 and the second slide rail 118 to move to the left and reset, at this time, the second connecting rod 124 releases the pull rope 122, the second spring 121 returns to its original state, drives the first support rod 2, the placement plate 3 and the table board 4 to move upward and reset, and the second slide rail 118 releases the first slide rail 114, and the first spring 115 returns to its original state.The first slide rail 114 is driven to move to the left and reset. When the first slide rail 114 is completely reset, the second slide rail 118 will move upward and reset, thereby driving the first guide sleeve 116 and the second guide sleeve 117 to move upward and reset. The second slide rail 118 will also drive the rotating rod 8 to move outward and reset, thereby driving the first connecting rod 7 to rotate outward and unfold. The first guide sleeve 116, the second guide sleeve 117 and the second slide rail 118 can be unfolded. At this time, the first connecting rod 7 on the upper left side drives the fourth connecting rod 134 to reverse and reset. When the fourth connecting rod 134 contacts the third connecting rod 132, it will squeeze the third connecting rod 132 to move upward and reset. The third spring 133 is compressed, so that the third connecting rod 132 releases the back plate 10, and the torsion spring 131 returns to its original state, driving the back plate 10 to rotate upward 90 degrees to reset and unfold, and then the motor 111 can be turned off.

[0044] Example 2

[0045] Based on Example 1, Figure 1 , Figure 2 , Fig.10 , Fig.11 and Fig.12 It also includes a walking component 14, which includes a third guide rod 141, a connecting rod 142, a fourth spring 143, a rotating shaft 144 and wheels 145. The third guide rod 141 is welded on both sides of the left and right sides of the lower part of the supporting foot 1, and a connecting rod 142 is slidably provided between the two third guide rods 141 on the same side in the horizontal direction. The first support rod 2 will contact the connecting rod 142 when it moves downward. The third guide rod 141 is wound with a fourth spring 143, and the two ends of the fourth spring 143 are respectively connected to the supporting foot 1 and the connecting rod 142. The left and right sides of the lower part of the connecting rod 142 are rotatably provided with a rotating shaft 144, and the rotating shaft 144 is provided with wheels 145. The wheels 145 can contact the ground when they move downward, so as to facilitate the movement of the entire desk and chair.

[0046] When the first support rod 2 moves downward, it will contact the connecting rod 142, thereby squeezing the connecting rod 142 to move downward, the fourth spring 143 is compressed, and the connecting rod 142 drives the rotating shaft 144 and the wheel 145 to move downward, so that the wheels 145 are in contact with the ground, so that the pull rope 122 can slightly pull up the entire desk and chair, so that the supporting feet 1 are separated from the ground, and then the wheels 145 can roll on the ground, which is convenient for students to move the desk and chair. When the first support rod 2 moves upward and resets, it will separate from the connecting rod 142, and the fourth spring 143 will return to its original state, driving the connecting rod 142, the rotating shaft 144 and the wheel 145 to move upward and reset relative to the supporting foot 1. At this time, the wheel 145 will separate from the ground, and the supporting foot 1 will contact the ground again, thereby ensuring the stability of the entire desk and chair.

[0047] Reference Figure 1 , Figure 2 , Fig.13 , Fig.14 and Fig.15 , also includes a pulling component 15, the pulling component 15 includes a slider 151, a pull rod 152, a push rod 153, a fifth spring 154, a first clamping block 155 and a sixth spring 156, the left side of the interior of the table board 4 is slidably provided with a slider 151, the right part of the slider 151 is rotatably provided with a pull rod 152, the right part of the pull rod 152 is covered with a rubber sheath for anti-slip effect, the student can pull the pull rod 152 to the right, which is more convenient for pulling the entire desk and chair to move, the middle part of the right side of the pull rod 152 is slidably provided with a push rod 153, and the fifth spring 154 is symmetrically arranged between the push rod 153 and the pull rod 152, the right side of the interior of the table board 4 is symmetrically slidably provided with a first clamping block 155, the first clamping block 155 clamps the pull rod 152, the first clamping block 155 is in contact with the push rod 153, and the outer side of the first clamping block 155 and the table board 4 are provided with a sixth spring 156.

[0048] When the student needs to move the desk and chair, he can hold the right part of the pull rod 152, thereby squeezing the push rod 153 to move to the left, the fifth spring 154 is compressed, and the push rod 153 squeezes the first block 155 to move outward to release the pull rod 152, the sixth spring 156 is compressed, and then the student can pull the pull rod 152 to the right, driving the slider 151 and the push rod 153 to move to the right. At this time, the push rod 153 will separate from the first block 155, and the pull rod 152 can support the inner side of the first block 155. When the pull rod 152 is fully pulled out, the student can rotate the pull rod 152 upward to a suitable angle, and then pull the desk through the pull rod 152. The chair is moved. When the desk and chair is moved to a suitable position, the pull rod 152 is rotated downward to a horizontal position, and then the pull rod 152 is pushed to the left to reset, driving the slider 151 and the push rod 153 to move to the left to reset. When the pull rod 152 is completely reset, the pull rod 152 will be separated from the first block 155, and the push rod 153 will contact the first block 155 again, and then the pull rod 152 is released. At this time, the fifth spring 154 returns to its original state, driving the push rod 153 to move to the right to reset, so that the push rod 153 releases the first block 155, and the sixth spring 156 returns to its original state, driving the first block 155 to move inward to reset and re-clamp the pull rod 152.

[0049] Reference Figure 1 , Figure 2 and Fig.16, also includes a clamping component 16, the clamping component 16 includes a third support rod 161, a second clamping block 162, a pulling block 163 and a seventh spring 164, the third support rod 161 is welded to the lower left part of the first support rod 2 on the front side, and the second clamping block 162 is slidably provided on the upper part of the third support rod 161, the bottom of the second clamping block 162 contacts the top of the front support foot 1, so as to limit the table board 4 and ensure the stability of the table board 4, a pulling block 163 is provided on the left side of the second clamping block 162, and a seventh spring 164 is provided between the second clamping block 162 and the third support rod 161.

[0050] Initially, the front support leg 1 blocks the bottom of the second clamping block 162, so as to ensure the stability of the table board 4 during the student's study and prevent the table board 4 from moving downward due to the heavy books. When the student needs to fold the entire desk and chair, he needs to pull the pull block 163 to the left first, drive the second clamping block 162 to move to the left, and the seventh spring 164 is compressed to separate the second clamping block 162 from the front support leg 1. At this time, the first support rod 2 can move downward to complete the folding work, and the first support rod 2 on the front side can drive the third support rod 1 61. The second clamping block 162 and the pulling block 163 move downward, at which time the front support foot 1 can support the right side of the second clamping block 162. When the first support rod 2 moves upward and resets, the front first support rod 2 can drive the third support rod 161, the second clamping block 162 and the pulling block 163 to move upward and reset, so that the front support foot 1 no longer supports the right side of the second clamping block 162, and the seventh spring 164 returns to its original state, driving the second clamping block 162 and the pulling block 163 to move rightward and reset, so that the front support foot 1 blocks the bottom of the second clamping block 162.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable desk and chair for easy storage, comprising a support leg (1), a first support rod (2), a placement board (3), a table board (4), a first guide rod (5), a second support rod (6), a first connecting rod (7), a rotating rod (8), a seat board (9) and a backrest board (10), wherein the upper parts of the support legs (1) on both the front and rear sides are both provided with first support rods (2) in a sliding manner, a table board (4) for placing books is provided between the tops of the first support rods (2), a placement board (3) for storing school bags is provided at the bottom of the table board (4), the placement board (3) is located between the two first support rods (2), two second support rods (6) are provided, and the second support rods (6) are arranged in a front-back manner. The second support rods (6) are symmetrically arranged, and are all located on the left side of the support foot (1). The front lower part of the rear support foot (1) is provided with a first guide rod (5), and the rear second support rod (6) is slidably connected to the first guide rod (5). The seat plate (9) is located directly above the two second support rods (6). The front and rear sides of the lower part of the seat plate (9) and the inner side of the second support rod (6) are both symmetrically and rotatably provided with first connecting rods (7), and the number of the first connecting rods (7) is eight. The inner sides of the four first connecting rods (7) on the same side are both rotatably provided with rotating rods (8), and the number of the rotating rods (8) is two. The upper left part of the seat plate (9) is rotatably provided with a backing plate (10), and the characteristics are: It also includes a retracting assembly (11), a lowering assembly (12) and a rotating assembly (13), wherein the supporting foot (1) is provided with a retracting assembly (11) for retracting the seat plate (9), the supporting foot (1) is provided with a lowering assembly (12) for driving the table plate (4) to move downward and be retracted, and the seat plate (9) is provided with a rotating assembly (13) for driving the back plate (10) to rotate rightward and be retracted; The retraction assembly (11) comprises a motor (111), a screw rod (112), a second guide rod (113), a first slide rail (114), a first spring (115), a first guide sleeve (116), a second guide sleeve (117) and a second slide rail (118). The motor (111) is provided on the right side of the lower part of the front support foot (1). The output shaft of the motor (111) is provided with a screw rod (112). The screw rod (112) is rotatably connected to the front support foot (1). The second support rod (6) on the front side is threadedly connected to the screw rod (112). The lower part of the support foot (1) is provided with a second guide rod (113). The left side of the second guide rod (113) is provided with a screw rod (112). A first slide rail (114) is slidably provided on each side, a first spring (115) is wound around each second guide rod (113), two ends of the first spring (115) are respectively connected to the second guide rod (113) and the first slide rail (114), a first guide sleeve (116) is provided in the middle of the front and rear sides of the bottom of the seat plate (9), a second guide sleeve (117) is slidably provided at the lower part of the first guide sleeve (116), a second slide rail (118) is slidably provided at the lower part of the second guide sleeve (117), the second slide rail (118) is slidably connected to the adjacent first slide rail (114), and the rotating rod (8) is slidably connected to the two second slide rails (118); The lowering assembly (12) comprises a second spring (121), a pull rope (122), a roller (123) and a second connecting rod (124); a second spring (121) is provided between the bottom of the first support rod (2) and the adjacent support foot (1); a pull rope (122) is provided between the lower right part of the first support rod (2) and the adjacent support foot (1); a roller (123) is rotatably provided on the right side of the lower part of the support foot (1); a second connecting rod (124) is provided on the right side of the top of the second support rod (6); and the second connecting rod (124) contacts the pull rope (122) when it moves to the right; The rotating assembly (13) comprises a torsion spring (131), a third connecting rod (132), a third spring (133) and a fourth connecting rod (134); two torsion springs (131) are arranged between the middle of the lower part of the back plate (10) and the seat plate (9); a third connecting rod (132) is symmetrically slidably arranged on the left side of the seat plate (9); the upper part of the third connecting rod (132) is in contact with the right half of the elliptical stop block on the front and rear sides of the back plate (10); a third spring (133) is arranged between the third connecting rod (132) and the seat plate (9); a fourth connecting rod (134) is arranged on the upper left part of the two first connecting rods (7) on the upper left side; and the fourth connecting rod (134) is in contact with the bottom of the adjacent third connecting rod (132); The invention also comprises a walking assembly (14) for facilitating movement. The walking assembly (14) comprises a third guide rod (141), a connecting rod (142), a fourth spring (143), a rotating shaft (144) and a wheel (145). The third guide rods (141) are provided on both left and right sides of the lower part of the supporting foot (1). A connecting rod (142) is slidably provided between two third guide rods (141) on the same side in the transverse direction. The first supporting rod (2) contacts the connecting rod (142) when it moves downward. The fourth spring (143) is wound around the third guide rod (141). The two ends of the fourth spring (143) are respectively connected to the supporting foot (1) and the connecting rod (142). The rotating shaft (144) is rotatably provided on both left and right sides of the lower part of the connecting rod (142). The rotating shaft (144) is provided with a wheel (145).

2. A foldable desk and chair for easy storage according to claim 1, characterized in that: The invention also comprises a pulling assembly (15) for facilitating students to pull the foldable and storable desks and chairs to move. The pulling assembly (15) comprises a slider (151), a pull rod (152), a push rod (153), a fifth spring (154), a first clamping block (155) and a sixth spring (156). The left side of the interior of the table board (4) is provided with a slider (151) in a sliding manner. The right side of the slider (151) is provided with a pull rod (152) in a rotatable manner. The right side of the pull rod (152) is provided with a push rod (153) in a sliding manner. The fifth spring (154) is symmetrically arranged between the push rod (153) and the pull rod (152) in a front-to-back manner. The right side of the interior of the table board (4) is provided with a first clamping block (155) in a front-to-back symmetrical manner. The first clamping blocks (155) clamp the pull rod (152) and the first clamping blocks (155) are in contact with the push rod (153). The outer side of the first clamping block (155) and the table board (4) are provided with a sixth spring (156).

3. The foldable and conveniently storable desk and chair according to claim 2 is characterized by: It also includes a clamping assembly (16) for ensuring the stability of the table top (4), the clamping assembly (16) including a third support rod (161), a second clamping block (162), a pulling block (163) and a seventh spring (164), the third support rod (161) being provided at the lower left portion of the first support rod (2) on the front side, the second clamping block (162) being slidably provided at the upper portion of the third support rod (161), the bottom of the second clamping block (162) being in contact with the top of the support foot (1) on the front side, the pulling block (163) being provided at the left side of the second clamping block (162), and the seventh spring (164) being provided between the second clamping block (162) and the third support rod (161).

4. The foldable desk and chair for easy storage according to claim 2 is characterized by: The right part of the pull rod (152) is covered with a rubber sheath.

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