A desk chair

Abstract

The office desk and chair of the present invention rotates the table top (102) to a horizontal position, thereby driving the third sleeve (304) to rotate 90 degrees, until the first locking block (318) overlaps the first bracket (103), and then the second rack (314) drives the table top (102) to move from the leftmost end to the rightmost end under the guidance of the third slider (306) and the third guide rail (305), and the second bracket (104) continues to move in a direction away from the first bracket (103), and the first slider (201) descends along the first guide rod (204), thereby causing the seat (101) to gradually flatten from a vertical folding state with a smaller occupied area to a horizontal state on which a user can sit during the movement of the first slider (201) along the first guide groove (202).

Description

Technical Field

[0001] The invention relates to a kind of office desk and chair, in particular to a chair board and a table board which can be folded, saves space, and is convenient for transportation and storage. Background Art

[0002] Tables and chairs are indispensable tools for people's study, work and daily life. With the progress of society and the improvement of people's living standards, tables and chairs have been greatly improved and innovated. However, the disadvantages of traditional tables and chairs have gradually become obvious. Traditional tables and chairs occupy a large area and are inconvenient to transport and store. They gradually cannot meet people's needs and expectations for tables and chairs.

[0003] Therefore, there is an urgent need for an office desk and chair that can fold a chair board and a table board, save space, and is convenient for transportation and storage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an office desk and chair with a chair board and a table board which can be folded, saves space, and is convenient for transportation and storage.

[0005] The present invention provides an office desk and chair, comprising a seat, a table top, a first bracket, and a second bracket, wherein the turning part comprises a first transverse axis, a third sleeve, a third guide rail, a third slider, a first bevel gear, a second bevel gear, a second transverse axis, a third transverse axis, a first gear, a first rack, a second gear, a second rack, a second locking block, a third locking block, a first through hole, and a first locking block;

[0006] The first bracket can overlap with the ground, and the ground can overlap with the second bracket. The first bracket is drivingly connected to the first transverse axis. The outer circumferential surface of the first transverse axis is bearing-connected to the inner circumferential surface of the third sleeve. The third sleeve is fixedly connected to the third guide rail. The third guide rail is provided with the third slider moving along its track. The third slider is fixedly connected to the third locking block, and the third locking block can be clamped with the third guide rail.

[0007] The third sliding block is fixedly connected to the second rack, the second rack is fixedly connected to the lower surface of the table top, the second rack is fixedly connected to the second locking block, and the second locking block can be driven and connected to the second bracket;

[0008] The second rack is meshed with the second gear, the second gear is coaxially fixed with the first transverse axis, the second gear is arranged in the first through hole and rotates, the first through hole is opened on the third sleeve, the third sleeve is fixedly connected with the first locking block, and the first locking block can overlap with the first bracket;

[0009] The first transverse shaft is coaxially fixed with the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is coaxially fixed with the second transverse shaft, and the second transverse shaft is drivingly connected to the seat.

[0010] The present invention provides an office desk and chair, wherein the first bracket is connected to a folding portion, and the folding portion includes a first slider, a first guide groove, a first hinge shaft, a first guide rod, a first sleeve, a second guide rod, a second sleeve, a first limit block, a second slider, and a second guide rail;

[0011] The first bracket is connected to the first hinge shaft bearing, the first hinge shaft is drivingly connected to one end of the first guide rod, the other end of the first guide rod is arranged in the first sleeve and reciprocates along its track, the other end of the first guide rod is fixedly connected to the first limit block, the first limit block can be clamped with the first sleeve, the first sleeve is hinged to the second guide rod, the second guide rod is fixedly connected to the first slider, the first slider is arranged in the first guide groove and reciprocates along its track, and the first guide groove is opened on the second bracket;

[0012] The first hinge shaft is fixedly connected to the second slider, the second slider is arranged in the second guide rail and moves along its track, and the second guide rail is fixedly connected to the seat;

[0013] The second transverse axis is drivingly connected to the first bracket, the second transverse axis is drivingly connected to the third transverse axis, the third transverse axis is drivingly connected to the first bracket, the third transverse axis is coaxially fixed to the first gear, the first gear is meshed with the first rack, and the first rack is fixedly connected to the second guide rail.

[0014] The present invention provides an office desk and chair, wherein the second locking block can be clamped with the right surface of the second bracket.

[0015] The present invention provides an office desk and chair, wherein the third sliding block is a dovetail-shaped sliding block, and the third guide rail is a dovetail-shaped guide groove.

[0016] The present invention provides an office desk and chair, wherein the second transverse axis is connected to the first bracket bearing.

[0017] The present invention provides an office desk and chair, wherein the first bracket is connected to the first transverse axis bearing.

[0018] The present invention provides an office desk and chair, wherein the second transverse axis is fixedly connected to the seat.

[0019] The present invention provides an office desk and chair, wherein the second transverse axis is connected to the third transverse axis by belt transmission.

[0020] The present invention provides an office desk and chair, wherein the third transverse axis is connected to the first bracket bearing.

[0021] The present invention provides an office desk and chair, wherein the second sliding block is a dovetail-shaped sliding block, and the second guide rail is a dovetail-shaped guide groove.

[0022] The difference between the office desk and chair of the present invention and the prior art is that the present invention rotates the table board to the horizontal level and then drives the third sleeve to rotate 90 degrees until the first locking block overlaps the first bracket, and then the second rack drives the table board from the leftmost end to the rightmost end under the guidance of the third slider and the third guide rail, so that the second rack drives the first gear to rotate, the first gear drives the first horizontal axis to rotate, the first horizontal axis drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the second horizontal axis to rotate, and the second horizontal axis drives the seat to move, so that the seat is moved from directly below the table board to obliquely below the table board while flipping the table board, so that the user can sit on the seat in a more comfortable way and use the table board as a support to record or work. The second bracket continues to move in the direction away from the first bracket, and the first slider descends along the first guide rod, so that the seat is gradually flattened from a vertical folded state with a smaller occupied area to a horizontal state where the user can sit during the movement of the first slider along the first guide groove.

[0023] The office desk and chair of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the first axonometric view of a desk and chair;

[0025] Figure 2 It is a second axonometric view of a desk and chair;

[0026] Figure 3 It is a third-dimensional axonometric view of an office desk and chair;

[0027] Figure 4 It is a first front view of a desk and chair;

[0028] Figure 5 It is a first rear view of a desk chair;

[0029] Figure 6 yes Figure 5 Dynamic change diagram of

[0030] Figure 7 yes Figure 1 Dynamic change diagram of

[0031] Figure 8 yes Figure 2 Dynamic change diagram of

[0032] Fig. 9 It is a side view of a desk chair;

[0033] Fig.10 yes Fig. 9 A partial enlarged view of

[0034] Fig.11 It is a second main view of an office desk and chair;

[0035] Fig.12 It is a second rear view of a desk chair;

[0036] Fig.13 It is a fourth axonometric view of an office desk and chair. DETAILED DESCRIPTION

[0037] like Figures 1 to 13 As shown, see Figure 1 , 2 ,

[0038] It includes a seat 101, a table top 102, a first bracket 103, and a second bracket 104, wherein the flip part 300 includes a first transverse axis 303, a third sleeve 304, a third guide rail 305, a third slider 306, a first bevel gear 307, a second bevel gear 308, a second transverse axis 309, a third transverse axis 310, a first gear 311, a first rack 312, a second gear 313, a second rack 314, a second locking block 315, a third locking block 316, a first through hole 317, and a first locking block 318;

[0039] The first bracket 103 can overlap with the ground, and the ground can overlap with the second bracket 104. The first bracket 103 is drivingly connected to the first transverse axis 303. The outer circumference of the first transverse axis 303 is bearing-connected with the inner circumference of the third sleeve 304. The third sleeve 304 is fixedly connected to the third guide rail 305. The third guide rail 305 is provided with the third slider 306 moving along its track. The third slider 306 is fixedly connected to the third locking block 316. The third locking block 316 can be clamped with the third guide rail 305.

[0040] The third slider 306 is fixedly connected to the second rack 314, the second rack 314 is fixedly connected to the lower surface of the table top 102, the second rack 314 is fixedly connected to the second locking block 315, and the second locking block 315 can be driven and connected to the second bracket 104;

[0041] The second rack 314 is meshed with the second gear 313, the second gear 313 is coaxially fixed with the first transverse axis 303, the second gear 313 is disposed in the first through hole 317 and rotates, the first through hole 317 is provided on the third sleeve 304, the third sleeve 304 is fixedly connected with the first locking block 318, and the first locking block 318 can overlap with the first bracket 103;

[0042] The first transverse axis 303 is coaxially fixed with the first bevel gear 307 , the first bevel gear 307 is meshed with the second bevel gear 308 , the second bevel gear 308 is coaxially fixed with the second transverse axis 309 , and the second transverse axis 309 is drivingly connected with the seat 101 .

[0043] The present invention rotates the table top 102 to a horizontal position and drives the third sleeve 304 to rotate 90 degrees until the first locking block 318 overlaps the first bracket 103, and then the second rack 314 drives the table top 102 to move from the leftmost end to the rightmost end under the guidance of the third slider 306 and the third guide rail 305, so that the second rack 314 drives the first gear 311 to rotate, the first gear 311 drives the first horizontal axis 303 to rotate, the first horizontal axis 303 drives the first bevel gear 307 to rotate, the first bevel gear 307 drives the second bevel gear 308 to rotate, the second bevel gear 308 drives the second horizontal axis 309 to rotate, and the second horizontal axis 309 drives the seat 101 to move, thereby achieving the goal of moving the seat 101 from directly below the table top 102 to obliquely below the table top 102 while flipping the table top 102, so that the user can sit on the seat 101 in a more comfortable way and use the table top 102 as a support to record or work.

[0044] Wherein, the rack may be the ground.

[0045] The present invention further stabilizes the first bracket 103 and the second bracket 104 through the above arrangement.

[0046] In the present invention, the second bracket 104 moves in a direction away from the first bracket 103, and the first slider 201 descends along the first guide rod 204, so that the seat 101 is gradually flattened from a vertical folded state with a smaller occupied area to a horizontal state on which a user can sit during the movement of the first slider 201 along the first guide groove 202.

[0047] Among them, Fig.11 As shown, another variation of the third slider 306 and the third guide rail 305 may be to be symmetrically arranged with the second rack 314 as an axis.

[0048] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 6, the first bracket 103 is connected to the folding part 200, and the folding part 200 includes a first slider 201, a first guide groove 202, a first hinge shaft 203, a first guide rod 204, a first sleeve 205, a second guide rod 206, a second sleeve 207, a first limit block 208, a second slider 301, and a second guide rail 302;

[0049] The first bracket 103 is bearing-connected with the first hinge shaft 203, the first hinge shaft 203 is drivingly connected with one end of the first guide rod 204, the other end of the first guide rod 204 is arranged in the first sleeve 205 and reciprocates along its track, the other end of the first guide rod 204 is fixedly connected with the first limit block 208, the first limit block 208 can be engaged with the first sleeve 205, the first sleeve 205 is hinge-connected with the second guide rod 206, the second guide rod 206 is fixedly connected with the first slider 201, the first slider 201 is arranged in the first guide groove 202 and reciprocates along its track, and the first guide groove 202 is provided on the second bracket 104;

[0050] The first hinge shaft 203 is fixedly connected to the second slider 301, the second slider 301 is disposed in the second guide rail 302 and moves along its track, and the second guide rail 302 is fixedly connected to the seat 101;

[0051] The second transverse axis 309 is drivingly connected to the first bracket 103, the second transverse axis 309 is drivingly connected to the third transverse axis 310, the third transverse axis 310 is drivingly connected to the first bracket 103, the third transverse axis 310 is coaxially fixed with the first gear 311, the first gear 311 is meshed with the first rack 312, and the first rack 312 is fixedly connected to the second guide rail 302.

[0052] The present invention uses the above arrangement to enable the user to pull the second bracket 104, so that the second bracket 104 moves relative to the first bracket 103, the first guide rod 204 gradually extends from the first sleeve 205, the second guide rod 206 drives the first slider 201 to move, the first limit block 208 prevents the first guide rod 204 from separating from the first sleeve 205, the third horizontal axis 310 rotates, the third horizontal axis 310 drives the first gear 311 to rotate, the first gear 311 drives the first rack 312 to move, and the first rack 312 moves. The first rack 312 drives the seat 101 to move, thereby achieving the goal of moving the seat 101 from directly below the table top 102 to obliquely below the table top 102 while flipping the table top 102, and the second bracket 104 continues to move in the direction away from the first bracket 103, and the first slider 201 descends along the first guide rod 204, thereby causing the seat 101 to gradually flatten from a vertical folded state with a smaller occupied area to a horizontal state on which a user can sit during the process of the first slider 201 moving along the first guide groove 202.

[0053] Among them, the connection method of "the ground can be connected to the first bracket 103" and "the second bracket 104 can be connected to the ground" can be a threaded connection or a suction cup connection. Of course, the contact area between the bottom of the first bracket 103 and the second bracket 104 and the ground can be large enough to avoid the first bracket 103 and the second bracket 104 from tilting.

[0054] The first slider 201 is a dovetail slider, and the first guide groove 202 is a dovetail guide groove.

[0055] The present invention further stabilizes the running state of the first sliding block 201 through the above arrangement.

[0056] The first hinge shaft 203 is fixedly connected to one end of the first guide rod 204 .

[0057] The present invention further stabilizes the rotational support of the first hinge shaft 203 to the first guide rod 204 through the above arrangement.

[0058] The first hinge shaft 203 is fixedly connected to the seat 101 .

[0059] The present invention further stabilizes the rotation of the first hinge shaft 203 through the above arrangement.

[0060] Wherein, both ends of the first guide groove 202 are provided with limit blocks.

[0061] The present invention provides limit blocks at both ends of the first guide groove 202 to prevent the first slider 201 from failing in connection.

[0062] Through the above arrangement, the present invention allows the seat 101 to be gradually flattened from a vertical folded state with a smaller occupied area to a horizontal state on which a user can sit during the process of stretching the second bracket 104 away from the first bracket 103, while the first slider 201 moves along the first guide groove 202. This reduces the occupied area and facilitates transportation and handling by folding, thereby saving space.

[0063] Among them, the lower surface of the seat 101 is hinged to the first support rod 151, and the other end of the first support rod 151 can contact the ground. The lower surface of the seat 101 is hinged to the second support rod 152, and the other end of the second support rod 152 can contact the ground.

[0064] In the present invention, the first support rod 151 and the second support rod 152 are arranged so that the seat 101 can withstand sufficient gravity in a horizontal state.

[0065] The table top 102 is fixedly connected to the first bracket 103 .

[0066] The present invention further stabilizes the support of the first bracket 103 to the table top 102 through the above arrangement.

[0067] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 7, 8, the second locking block 315 can be snap-fitted with the right surface of the second bracket 104.

[0068] The present invention uses the above arrangement to enable the second locking block 315 to lock the second rack 314 to prevent the table top 102 from moving back and forth during use.

[0069] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 9, 10, the third slider 306 is a dovetail slider, and the third guide rail 305 is a dovetail guide groove.

[0070] The present invention further stabilizes the operating state of the third sliding block 306 through the above arrangement.

[0071] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 11, 12, the second transverse axis 309 is connected to the first bracket 103 by a bearing.

[0072] The present invention enables the second horizontal axis 309 to rotate stably through the above arrangement.

[0073] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 13, the first bracket 103 is connected to the first horizontal axis 303 by a bearing.

[0074] The present invention further stabilizes the rotation of the first transverse axis 303 through the above arrangement.

[0075] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 6, the second horizontal axis 303 is fixedly connected to the seat 101.

[0076] The present invention uses the above arrangement to enable the second transverse axis 303 to lower the seat 101 during the rotation process.

[0077] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 6, 7, the second transverse axis 309 is connected to the third transverse axis 310 with a belt transmission.

[0078] The present invention further stabilizes the transmission of the second transverse axis 309 to the third transverse axis 310 through the above arrangement.

[0079] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 6, 7, 8, the third transverse axis 310 and the first bracket 103 are bearing-connected.

[0080] According to the present invention, the third horizontal axis 310 operates stably through the above arrangement.

[0081] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 7, 8, the second slider 301 is a dovetail slider, and the second guide rail 302 is a dovetail guide groove.

[0082] The present invention further stabilizes the running state of the second slider 301 through the above arrangement. Figure 1 , 2 , 3, 4, 5, 6, the first bracket 103 is connected to the pitch part 400, and the pitch part 400 includes a first vertical plate 401, a second vertical plate 402, a fourth horizontal axis 403, a first handle 404, a third bevel gear 405, a fourth bevel gear 406, a first threaded rod 407, a fourth slider 408, a fourth guide groove 409, a first nut 410, a sixth slider 411, a sixth guide groove 412, a first spring 413, a first sprocket 414, a second sprocket 415, a third sprocket 416, and a first transmission chain 417;

[0083] The first bracket 103 is hingedly connected to the first vertical plate 401, the first vertical plate 401 is bearing-connected to the first transverse axis 303, and the second transverse axis 309 is bearing-connected to the first vertical plate 401;

[0084] The second transverse axis 309 is coaxially fixed with the first sprocket 414, the first sprocket 414 is chain-drivenly connected with the second sprocket 415 and the third sprocket 416 through the first transmission chain 417, the third sprocket 416 is coaxially fixed with the third transverse axis 310, the second sprocket 415 is bearing-connected with the sixth slider 411, the sixth slider 411 is arranged in the sixth guide groove 412 and reciprocates along its track, the sixth guide groove 412 is opened on the first bracket 103, the sixth guide groove 412 is connected with the first spring 413 One end is fixedly connected, and the other end of the first spring 413 is fixedly connected to the sixth slider 411; the second bracket 104 is connected to one end of the fourth horizontal axis 403 with a bearing, and the other end of the fourth horizontal axis 403 is fixedly connected to the first handle 404, the fourth horizontal axis 403 is coaxially fixed with the third bevel gear 405, the third bevel gear 405 is meshed with the fourth bevel gear 406, the fourth bevel gear 406 is coaxially fixed with the first threaded rod 407, and the first threaded rod 407 is connected to the second bracket 104 with a bearing;

[0085] The first threaded rod 407 is threadedly connected to the first nut 410, the first nut 410 is bearing-connected to the fourth slider 408, the fourth slider 408 is arranged in the fourth guide groove 409 and reciprocates along its trajectory, the fourth guide groove 409 is opened on the second vertical plate 402, the second locking block 315 can be clamped with the second vertical plate 402, and the second vertical plate 402 is hingedly connected to the second bracket 104.

[0086] The present invention enables the user to shake the first handle 404 so that the fourth horizontal axis 403 drives the third bevel gear 405 and the fourth bevel gear 406 to rotate, and the fourth bevel gear 406 drives the first threaded rod 407 to rotate, and the first threaded rod 407 drives the first nut 410 to move upward, and the first nut 410 drives the fourth slider 408 to move along the fourth guide groove 409. Since the fourth slider 408 and the fourth guide groove 409 cannot withstand the vertical force, the second vertical plate 402 rises, and the second vertical plate 402 stabilizes the horizontal position of the table top 102 through the second locking block 315 to prevent it from shaking left and right. The fourth slider 408 gradually moves away from the hinge connection between the second vertical plate 402 and the second bracket 104, thereby adjusting the pitch angle of the second vertical plate 402, and finally adjusting the pitch angle of the table top 102, so that the user can use the desktop more reasonably and comfortably.

[0087] The sixth slider 411 is a dovetail slider, and the sixth guide groove 412 is a dovetail guide groove.

[0088] The present invention further stabilizes the operating state of the sixth sliding block 411 through the above arrangement.

[0089] The helix angle between the first threaded rod 407 and the first nut 410 is small enough to be self-locking even when subjected to downward pressure.

[0090] The present invention uses the above arrangement to prevent the table top 102 from automatically falling when the user uses the table top 102 to draw or write.

[0091] The fourth slider 408 is a dovetail slider, and the fourth guide groove 409 is a dovetail guide groove.

[0092] The present invention further stabilizes the operating state of the fourth sliding block 408 through the above arrangement.

[0093] Among them, see Fig.13 As shown, the first bracket 103 is fixedly connected to the first isolation grid 361 , and the second bracket 104 is fixedly connected to the second isolation grid 362 .

[0094] The present invention provides the first isolation fence 361 and the second isolation fence 362 to prevent the user from touching parts when sitting down, thereby preventing the device from failing to operate.

[0095] Among them, see Figure 2 , 9As shown in Figure 10, the upper end of the second locking block 315 is fixedly connected to one end of the second spring 351, and the other end of the second spring 351 is fixedly connected to the sixth guide groove 352. The sixth guide groove 352 is provided with the second locking block 315 which moves back and forth along its trajectory, and the lower end of the second locking block 315 is inclined from bottom to top, from close to the second vertical plate 402 to away from the second vertical plate 402.

[0096] The present invention sets the lower end of the second locking block 315 to be inclined so that when the second rack 314 moves from left to right, the second locking block 315 will retract into the sixth guide groove 352 under the action of the slope. After the second locking block 315 is completely located on the right surface of the second vertical board 402, it is locked with the second vertical board 402 to stabilize the table top 102 and prevent it from sliding left and right during use.

[0097] The hinge axes of the first vertical plate 401 and the first bracket 103 , and the hinge axes of the second vertical plate 402 and the second bracket 104 are coaxially arranged.

[0098] The present invention ensures that the first vertical board 401 and the second vertical board 402 are at the same angle when raised through the above arrangement, thereby ensuring that the table top 102 can be used normally.

[0099] As another variation of the present invention, see Fig.12 The sixth guide groove 412 is horizontally opened on the first bracket 103 , the first spring 413 is horizontally arranged, and the sixth slider 411 moves laterally along the sixth guide groove 412 .

[0100] The present invention makes the tensioning effect of the second sprocket 415 more prominent through the above arrangement, thereby effectively increasing the stability of the transmission.

[0101] For further explanation of the present invention, see Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 12, the fourth slider 408 is connected to the baffle portion 500, and the baffle portion 500 includes a first connecting rod 501, a second connecting rod 502, a third rack 503, a fourth gear 504, a fifth slider 505, a fifth guide groove 506, a first baffle 507, and a fourth rack 508;

[0102] The fourth slider 408 is fixedly connected to one end of the first connecting rod 501, the other end of the first connecting rod 501 is fixedly connected to one end of the second connecting rod 502, the other end of the second connecting rod 502 is fixedly connected to the third rack 503, the third rack 503 is meshed with the fourth gear 504, the fourth gear 504 is connected to the bearing of the table top 102, the fourth gear 504 is meshed with the fourth rack 508, the fourth rack 508 is fixedly connected to the first baffle plate 507, the first baffle plate 507 is fixedly connected to the fifth slider 505, the fifth slider 505 is arranged in the fifth guide groove 506 and moves back and forth along its trajectory, and the fifth guide groove 506 is opened on the table top 102.

[0103] In the present invention, the movement of the fourth slider 408 drives the first connecting rod 501 and the second connecting rod 502 to move, the second connecting rod 502 drives the third rack 503 to move, the third rack 503 drives the fourth gear 504 to rotate, the fourth gear 504 drives the fourth rack 508 to rise, and the fourth rack 508 drives the first baffle 507 to move upward under the guidance of the fifth slider 505 and the fifth guide groove 506, thereby causing the first baffle 507 to rise in the process of raising the table top 102, thereby preventing objects on the table top 102 from falling off, and the raising of the first baffle 507 can provide support for objects such as drawing boards and computers.

[0104] Wherein, the fifth guide groove 506 is a dovetail guide groove, and the fifth slider 505 is a dovetail slider.

[0105] The present invention further stabilizes the operating state of the fifth sliding block 505 through the above arrangement.

[0106] The fifth guide groove 506 is a non-through guide groove at both ends, thereby ensuring that the fifth sliding block 505 and the first baffle plate 507 will not fall off.

[0107] The fourth gear 504 cannot rotate without external driving force, thereby preventing the first baffle 507 from retracting automatically.

[0108] The fifth sliding block 505 and the fifth guiding groove 506 may be configured in multiple groups.

[0109] The present invention further stabilizes the reciprocating movement of the first baffle 507 through the above arrangement.

[0110] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An office desk and chair, comprising a seat (101), a table top (102), a first bracket (103), and a second bracket (104), characterized in that: The flipping part (300) comprises a first transverse axis (303), a third sleeve (304), a third guide rail (305), a third slider (306), a first bevel gear (307), a second bevel gear (308), a second transverse axis (309), a third transverse axis (310), a first gear (311), a first rack (312), a second gear (313), a second rack (314), a second locking block (315), a third locking block (316), a first through hole (317), and a first locking block (318); The first bracket (103) can overlap with the ground, and the ground can overlap with the second bracket (104); the first bracket (103) is drivingly connected to the first transverse axis (303); the outer circumferential surface of the first transverse axis (303) is bearing-connected to the inner circumferential surface of the third sleeve (304); the third sleeve (304) is fixedly connected to the third guide rail (305); the third guide rail (305) is provided with a third slider (306) that moves along its track; the third slider (306) is fixedly connected to the third locking block (316); and the third locking block (316) can be clamped with the third guide rail (305); The third sliding block (306) is fixedly connected to the second rack (314), the second rack (314) is fixedly connected to the lower surface of the table top (102), the second rack (314) is fixedly connected to the second locking block (315), and the second locking block (315) can be driven and connected to the second bracket (104); The second rack (314) is meshed with the second gear (313), the second gear (313) is coaxially fixed with the first transverse axis (303), the second gear (313) is arranged in the first through hole (317) and rotates, the first through hole (317) is opened on the third sleeve (304), the third sleeve (304) is fixedly connected with the first locking block (318), and the first locking block (318) can overlap with the first bracket (103); The first transverse axis (303) is coaxially fixed with the first bevel gear (307), the first bevel gear (307) is meshed with the second bevel gear (308), the second bevel gear (308) is coaxially fixed with the second transverse axis (309), and the second transverse axis (309) is drivingly connected to the seat (101).

2. The office desk and chair according to claim 1, characterized in that: The first bracket (103) is connected to the folding part (200), and the folding part (200) comprises a first slider (201), a first guide groove (202), a first hinge shaft (203), a first guide rod (204), a first sleeve (205), a second guide rod (206), a second sleeve (207), a first limit block (208), a second slider (301), and a second guide rail (302); The first bracket (103) is bearing-connected to the first hinge shaft (203); the first hinge shaft (203) is drivingly connected to one end of the first guide rod (204); the other end of the first guide rod (204) is arranged in the first sleeve (205) and reciprocates along its track; the other end of the first guide rod (204) is fixedly connected to the first limit block (208); the first limit block (208) can be clamped with the first sleeve (205); the first sleeve (205) is hinge-connected to the second guide rod (206); the second guide rod (206) is fixedly connected to the first slider (201); the first slider (201) is arranged in the first guide groove (202) and reciprocates along its track; the first guide groove (202) is opened on the second bracket (104); The first hinge shaft (203) is fixedly connected to the second slider (301); the second slider (301) is arranged in the second guide rail (302) and moves along its track; the second guide rail (302) is fixedly connected to the seat (101); The second transverse axis (309) is drivingly connected to the first bracket (103), the second transverse axis (309) is drivingly connected to the third transverse axis (310), the third transverse axis (310) is drivingly connected to the first bracket (103), the third transverse axis (310) is coaxially fixed to the first gear (311), the first gear (311) is meshed with the first rack (312), and the first rack (312) is fixedly connected to the second guide rail (302).

3. The office desk and chair according to claim 1, characterized in that: The second locking block (315) can be snap-fitted with the right surface of the second bracket (104).

4. The office desk and chair according to claim 1, characterized in that: The third slider (306) is a dovetail slider, and the third guide rail (305) is a dovetail guide groove.

5. The office desk and chair according to claim 1, characterized in that: The second transverse axis (309) is bearing-connected to the first bracket (103).

6. The office desk and chair according to claim 1, characterized in that: The first bracket (103) is bearing-connected to the first transverse axis (303).

7. The office desk and chair according to claim 1, characterized in that: The second transverse axis is fixedly connected to the seat (101).

8. The office desk and chair according to claim 1, characterized in that: The second transverse axis (309) is connected to the third transverse axis (310) by belt transmission.

9. The office desk and chair according to claim 2, characterized in that: The third transverse axis (310) and the first bracket (103) are bearing-connected.

10. The office desk and chair according to claim 2, characterized in that: The second slider (301) is a dovetail slider, and the second guide rail (302) is a dovetail guide groove.

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