Seat configuration and use method

Abstract

The invention discloses a configuration and use method of a seat. The configuration and use method comprises the steps that a seated person sits on the seat with two armrests, a supporting plate assembly is installed according to requirements, and the seat is used. According to the office chair, the supporting plate assembly is connected to the armrests, so that a seated person can choose to use the supporting plate to work in a standing posture or a leaning-back posture according to own needs, the working fatigue feeling and the pressure of the chair on the spine are reduced, the physical health of the seated person is protected, and the office efficiency is also improved.

Description

Technical Field

[0001] The present invention relates to the field of seats, and particularly to a configuration and usage method of a seat. Background Art

[0002] For office workers who need to sit for a long time, they need to frequently change different sitting postures. When working at a desk, the office worker needs to straighten the upper body on the office chair so that the hands can reach the corresponding office items on the desk. At the same time, the straight sitting posture can also effectively prevent spinal deformation or scoliosis. When they need to rest, the office worker can lean back on the office chair and switch to a reclined or semi-reclined posture to relax the upper body that has been in a straight posture for a long time.

[0003] When in a standing state for a long time, almost all the weight of the upper body of the sitter is supported by the spine. Especially the position corresponding to the waist at the lower end of the spine bears the greatest force, which is prone to causing excessive spinal load. When the sitter reclines backward, most of the weight of the upper body is dispersed to the reclined backrest, thereby reducing the pressure on the spine and achieving the purpose of relaxing the upper body. To reduce the pressure on the spine during work, some office workers try to work on the office chair in a reclined state. However, when the upper body is in a reclined state, their arms will also be far away from the office supplies on the desk and be in a suspended state, which not only easily causes a sense of fatigue but also affects normal work efficiency. Summary of the Invention

[0004] The present invention provides a configuration and usage method of a seat. By connecting a tray assembly to the armrests, the sitter can choose to use the tray for work in a standing posture or a reclined posture according to their own needs, reducing the work fatigue and the pressure of the seat on the spine, protecting the physical health of the sitter, and also improving work efficiency.

[0005] The technical solution of the present invention is realized as follows: A configuration and usage method of a seat, comprising the following steps: S1: The sitter sits on a seat with two armrests; S2: Install the tray assembly according to the need; the tray assembly includes a tray and a connection assembly arranged on the tray. When the sitter needs to use the tray assembly, connect the connection assembly to one of the armrests so that the tray is in place in front of the sitter; S3: Use; the sitter uses the tray as a supporting carrier in a standing posture or a reclined posture.

[0006] Preferably, in step S3, when the sitter works on the seat in a standing posture, the tray maintains a horizontal support state in front of the sitter.

[0007] Preferably, in step S1, the seat includes a seat back that can be rotated forward and backward and armrest arms connected to the left and right sides of the seat back, the armrests are connected to the top ends of the armrest arms, and the seat back can be linked to the armrests to tilt backward when it is rotated backward; in step S3, when the occupant switches from an upright posture to a reclining posture, the seat back rotates backward and is converted from a horizontal support state to a tilted support state with a higher front and a lower rear through the corresponding armrest linkage support plate to adapt to the sitting posture of the occupant in the reclining state.

[0008] Preferably, in step S3, when the support plate is switched to the inclined support state, the inclination angle range of the support plate relative to the horizontal plane is 5°-25°.

[0009] Preferably, in step S2, a blocking portion for blocking office items is provided on the upper end of the pallet, and the blocking portion protrudes upward from the upper end surface of the pallet; in step S3, when the pallet is converted to an inclined support state, the blocking portion blocks and prevents items on the pallet from sliding off.

[0010] Preferably, in step S2, the connecting assembly includes a first clamping member and a second clamping member located at the lower end of the pallet, a clamping space is formed between the first clamping member and the second clamping member, and at least one of the first clamping member and the second clamping member can move along the width direction of the clamping space and stay at a corresponding position; when the occupant needs to use the pallet assembly, the first clamping member and / or the second clamping member is controlled to move and stop at a corresponding position to adjust the width of the clamping space to correspond to the width of the armrest, so that the pallet assembly is clamped and fixed on the corresponding armrest.

[0011] Preferably, when the occupant does not need to use the pallet assembly, step S4 can be followed; S4: control the first clamping member and / or the second clamping member to move and release the corresponding armrest, and remove the pallet assembly from the corresponding armrest; so that the occupant can use the seat alone, meeting the occupant's usage needs.

[0012] Preferably, in step S2, the connecting assembly includes a base fixed at the lower end of the support plate, and the second clamping member is fixedly connected to the base; the base is provided with a slide groove extending along the width direction of the clamping space, and the first clamping member is provided with a sliding connection portion matching the slide groove, and the sliding connection portion is slidably connected in the slide groove; when the occupant needs to use the support plate assembly, the sliding connection portion slides in the slide groove to adjust the width of the clamping space to correspond to the width of the armrest.

[0013] Preferably, in step S2, the first clamping member is provided with a spiral hole extending along the width direction of the clamping space, and the connecting assembly also includes a driving member, which is a driving screw that is spirally fitted in the spiral hole and can rotate in situ, and a handle is connected to the outer end of the driving screw. When the seated person needs to use the support plate assembly, the handle is turned to make the first clamping member slide along the width direction of the clamping space and stay at the corresponding position.

[0014] Preferably, in step S2, the driving screw includes a limiting section and a helical section for cooperating with the helical hole. A limiting member is connected to the limiting section, and the width of the limiting member is greater than that of the helical section. The base is provided with a first abutting portion and a second abutting portion corresponding to the position of the limiting member. When the driving screw rotates, the first abutting portion and the second abutting portion respectively abut against both ends of the limiting member to keep the driving screw in place.

[0015] Preferably, in step S2, the connecting assembly includes a first clamping member and a second clamping member. The second clamping member is fixed to the lower end of the tray. Hinge portions are provided on both the first clamping member and the second clamping member. The two hinge portions are hinged to form a hinge end. A torsion spring is provided at the hinge end to always give the first clamping member and the second clamping member a resetting tendency. When the first clamping member and the second clamping member rotate outward and open to a predetermined position, the torsion spring forces the first clamping member and the second clamping member to reset and clamp the armrest fittingly installed in the clamping space.

[0016] Preferably, in step S2, the tray includes a tray body. The rear end of the tray body has an extension portion extending laterally outward. The left - right width of the extension portion is smaller than the left - right width of the tray body. The connecting assembly is arranged at the lower end of the extension portion. In step S2, the connecting assembly at the lower end of the extension portion is connected to the corresponding armrest to widen the avoidance space between the tray body and the chair back.

[0017] Preferably, in step S2, the connecting assembly includes a base fixed to the lower end of the tray. The first clamping member and the second clamping member are both hinged to the base to form two hinge ends. A torsion spring is provided at the hinge end to always give the first clamping member and the second clamping member a resetting tendency. When the first clamping member and the second clamping member rotate outward and open to a predetermined position, the torsion spring forces the first clamping member and the second clamping member to reset and clamp the armrest fittingly installed in the clamping space.

[0018] Preferably, in step S2, the connecting assembly includes a socket member and a wedge - shaped sliding member. The socket member has a socket groove extending in the horizontal direction. The wedge - shaped sliding member is slidably connected to the lower end of the tray and corresponds to the position of the socket groove. When the sitter needs to use the tray assembly, first insert the corresponding armrest into the socket groove to form a gap with the socket member, and then control the wedge - shaped sliding member to slide in and fill the gap to connect the tray assembly with the corresponding armrest.

[0019] Preferably, in step S2, a cup holder for conveniently placing a water cup is provided on the left or right side of the tray. An insertion assembly is provided between the cup holder and the tray. The insertion assembly includes a socket provided on the tray and an insertion portion provided on the cup holder. The socket is provided with an insertion slot with an open upper end, and the insertion portion is inserted into the slot. An anti-tipping structure is provided between the insertion portion and the insertion slot. The anti-tipping structure includes an arc-shaped guiding surface provided at the bottom of the insertion slot and an arc-shaped mating surface provided on the outer wall of the insertion portion. The arc-shaped mating surface is in contact and cooperation with the arc-shaped guiding surface. In step S3, when the sitter switches between the upright posture and the reclined posture, the backrest rotates in the front-rear direction. At this time, the arc-shaped guiding surface forms a guide for the arc-shaped mating surface, so that the insertion portion rotates adaptively relative to the socket, and further keeps the cup holder perpendicular to the ground, preventing the drink in the water cup on the cup holder from spilling out.

[0020] Preferably, when the sitter needs to adjust the distance between himself and the tray, he can proceed according to step S5; S5: Control the first clamping member and / or the second clamping member to move and loosen the corresponding armrest, then adjust the front-rear clamping positions of the first clamping member and the second clamping member on the corresponding armrest to the in-place position, and then control the first clamping member and / or the second clamping member to move and clamp the corresponding armrest, so that the tray is in place in front of the sitter; The sitter can adjust the distance between himself and the tray according to his own needs, so that the sitter can use the tray more comfortably.

[0021] Preferably, in step S1, the seat includes a seat cushion and a backrest. Armrest supports are connected to both the left and right sides of the seat cushion or both the left and right sides of the backrest. The armrest is rotatably connected to the top of the armrest support in the horizontal direction. When the sitter needs to get up and leave the seat, he can proceed according to step S6; S6: Rotate the armrest connected to the connection assembly outwards, so that the tray rotates with the corresponding armrest to the outside of the sitter, so as to create a space for the sitter to leave the seat; The sitter can leave the seat without removing the tray assembly, improving the use experience.

[0022] The beneficial effects of the present invention adopting the above technical solutions are: By installing the tray assembly on one of the armrests of the seat, the present invention endows the office chair with the function of supporting and placing objects, enabling the sitter to work in an upright posture or a reclined posture relying on the tray as a supporting carrier according to his own needs, reducing the work fatigue and the pressure of the seat on the spine, protecting the healthy posture of the sitter, and also improving the work efficiency.

[0023] The armrest on the seat is linked with the backrest that can rotate back and forth, so that when the backrest rotates backward, the tray can also be converted to an inclined support state with the front high and the rear low, adapting to the sitting posture of the sitter, conforming to ergonomics, and further improving the diversity and comfort of work.

[0024] Without changing or damaging the structure of the office chair, the connecting component on the tray is detachably installed and connected to the armrest. When the tray is needed, the tray component can be installed on the armrest by oneself. When the tray component is not needed, the tray component can be removed from the armrest and the office chair can be used alone, meeting the various usage requirements of the sitter and enhancing the selectivity and practicality of the tray component.

[0025] The structure of the clamping connection component enables the tray component to be connected to the armrests of different thicknesses or widths of the seat. Therefore, when the tray component is combined with the seat, it is not affected by the specifications of the armrests, has strong versatility, and is applicable to most office chairs or ergonomic chairs on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the tray component and a cross-sectional view of the cup holder connection; Figure 2 It is an exploded view of the tray component; Figure 3 It is an exploded view of the cup holder and the socket; Figure 4 It is an exploded view of the connection component and a schematic structural diagram of the base; Figure 5 It is a structural diagram of the tray component set on the seat; Figure 6 It is a cross-sectional view of the armrest in the clamping space; Figure 7 It is a side view of the tray component when it is horizontal; Figure 8 It is a side view of the backrest of the chair reclining and the tray component tilting backward; Figure 9 It is a schematic diagram of the connection component in Embodiment 2; Figure 10 It is a schematic diagram of another structure of the connection component in Embodiment 2; Figure 11 It is a schematic diagram of a tension spring arranged between the first clamping member and the second clamping member in Embodiment 2; Figure 12 It is a schematic diagram of an adjusting bolt arranged between the first clamping member and the second clamping member in Embodiment 2; Figure 13 It is a schematic diagram of the connection component in Embodiment 3; Figure 14 It is a schematic diagram of the connection component in Embodiment 4; Figure 15 It is a cross-sectional view of the armrest in the clamping space in Embodiment 4; Figure 16 It is a block diagram of the method steps of the present invention; The reference numerals of each figure are as follows: 1 - support plate, 2 - detachable mounting module, 3 - blocking portion, 4 - cover plate, 5 - cup holder, 6 - chair body, 7 - socket member, 7a - socket groove, 11 - extension portion, 12 - countersunk hole, 13 - insertion hole, 21 - first clamping member, 21a - second clamping member, 22 - clamping space, 23 - base, 24 - driving screw, 25 - limiting member, 26 - tension spring, 27 - adjusting bolt, 28 - adjusting nut, 31 - pin, 51 - socket, 51a - socket groove, 52 - insertion portion, 53 - pen placement hole, 54 - drain hole, 61 - armrest, 61a - armrest support arm, 62 - seat, 63 - backrest, 71 - wedge-shaped sliding member, 72 - support base, 73 - screw rod, 74 - handwheel, 75 - guide rail, 76 - limiting nut, 211 - sliding connection portion, 212 - threaded hole, 231 - sliding groove, 232 - insertion post, 233 - insertion hole, 234 - accommodation groove, 234a - first abutting portion, 234b - second abutting portion, 241 - handle, 242 - limiting section, 251 - connection groove, 511 - arc-shaped guiding surface, 512 - avoidance groove, 521 - arc-shaped mating surface, 522 - narrowing portion, 711 - wedge-shaped surface. Detailed implementation manners

[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0029] The present invention has multiple embodiments, and the specific implementation manners are as follows: Embodiment 1: As Figure 1-8 shown, this embodiment provides a configuration and usage method of a seat, including the following steps: S1: A sitter sits on a seat with two armrests 61; the seat includes a chair body 6, the chair body includes a seat 62 and a backrest 63, and the two armrests 61 can be directly or indirectly fixed on the left and right sides of the seat 62, or can be directly or indirectly fixed on the left and right sides of the backrest 63; S2: Install the support plate assembly according to requirements; the support plate assembly includes a support plate 1 and a connection assembly 2 provided on the support plate 1; when the sitter needs to use the support plate assembly, connect the connection assembly 2 to one of the armrests 61 so that the support plate 1 is in place in front of the sitter; S3: Use; the seated person uses the support plate 1 as a supporting carrier in an upright posture or a reclining posture; so that the seated person can work or relax in a comfortable posture as required by himself, avoiding excessive pressure on the spine due to being in an upright posture for a long time.

[0030] Furthermore, in order to better assist the occupant in working in an upright posture, in step S3, when the occupant maintains an upright posture on the chair to work, the support plate 1 maintains a horizontal support state in front of the occupant to support the occupant's arms and office items such as computers or notebooks.

[0031] Furthermore, the backrest 63 of some office chairs or ergonomic chairs has a reclining rotation function, so that the seated person can switch to a reclining position after lying backward. For example, in step S1 of this embodiment, the chair includes a backrest 63 that can rotate forward and backward and armrest arms 61a connected to the left and right sides of the backrest 63, and the armrests 61 are connected to the tops of the armrest arms 61a. When the backrest 63 rotates backward, the armrests 61 can be linked to tilt backward. In order to better cooperate with the seated person to work in a reclining position, in step S3, when the seated person switches from an upright position to a reclining position, his arms will When the seat is away from the pallet 1 for a certain distance, the chair back 63 rotates backwards and links the pallet 1 with the corresponding armrest 61 to transform from a horizontal support state to an inclined support state with a higher front and a lower back, so that the pallet 1 can form a follow-up support for the arms as the upper body moves. The office supplies on the pallet 1 will also tilt with the pallet 1 to adapt to the sitting posture of the occupant in the reclining state. Compared with using the pallet 1 in an upright sitting position, in a supine position, the chair back 63 bears most of the pressure on the occupant's upper body, and the pressure on the occupant's spine is greatly reduced, thereby protecting the spine of the occupant who uses the pallet 1 for a long time.

[0032] Furthermore, the tilt angle of the support plate 1 must be kept within a reasonable range. If the tilt angle of the support plate 1 is too small, it is difficult to support the arm of the seated person. If the tilt angle of the support plate 1 is too large, it is difficult for the support plate 1 to fit the arm of the seated person, and office items are also easy to slide off the support plate 1, affecting office efficiency. Therefore, in step S3, when the support plate 1 is switched to the tilt support state, the tilt angle range of the support plate 1 relative to the horizontal plane is 5°-25°; the rotation angle range of the chair back 63 that can rotate forward and backward is also the same as the tilt angle range of the support plate 1.

[0033] Furthermore, in order to ensure office efficiency and prevent office items from sliding off the pallet 1, in step S2, a blocking portion 3 for blocking office items is provided at the upper end of the pallet 1, and the blocking portion 3 protrudes upward from the upper end surface of the pallet 1; in step S3, when the pallet 1 is converted to an inclined support state, the blocking portion 3 blocks and prevents the items on the pallet 1 from sliding off.

[0034] Furthermore, to meet the various usage requirements of the seated person, in this embodiment, the connecting component is equivalent to a detachable mounting module 2. In step S2, the connecting component 2 includes a first clamping member 21 and a second clamping member 21a located at the lower end of the tray 1. A clamping space 22 is formed between the first clamping member 21 and the second clamping member 21a. At least one of the first clamping member 21 and the second clamping member 21a can move along the width direction of the clamping space 22 and stay at the corresponding position. When the seated person needs to use the tray assembly, control the first clamping member 21 and / or the second clamping member 21a to move and stop at the corresponding position, so as to adjust the width of the clamping space 22 to correspond to the width of the armrest 61, form a clamping force on the corresponding armrest 61, and clamp and fix the tray assembly on the corresponding armrest 61. To meet the need of the seated person to use the tray 1 after leaving the table, when the seated person does not need to use the tray assembly, step S4 can be carried out; S4: Control the first clamping member 21 and / or the second clamping member 21a to move and release the corresponding armrest 61, and remove the tray assembly from the corresponding armrest 61; so that the seated person can use the seat alone.

[0035] Furthermore, in this embodiment, the first clamping member 21 and the second clamping member 21a are of a sliding design structure. Specifically, in step S2, the connecting component 2 includes a base 23 fixed to the lower end of the tray 1, and the second clamping member 21a is fixedly connected to the base 23; a chute 231 extending along the width direction of the clamping space 22 is provided on the base 23, and a sliding connection portion 211 matching the chute 231 is provided on the first clamping member 21. The sliding connection portion 211 is slidably connected in the chute 231. When the seated person needs to use the tray assembly, the sliding connection portion 211 slides in the chute 231 to adjust the width of the clamping space 22 to correspond to the width of the armrest 61.

[0036] Furthermore, a clamping force needs to be formed between the first clamping member 21 and the second clamping member 21a and then remain relatively fixed to prevent the tray 1 from falling off the seat. Therefore, in step S2, a spiral hole 212 extending along the width direction of the clamping space 22 is provided on the first clamping member 21. The connecting component 2 further includes a driving member. The driving member is a driving screw 24 that is spirally engaged in the spiral hole 212 and can rotate in place. The outer end of the driving screw 24 is connected with a handle 241. When the seated person needs to use the tray assembly, rotate the handle 241 to make the first clamping member 21 slide along the width direction of the clamping space 22 and stay at the corresponding position; the spiral engagement method forms self-locking on the first clamping member 21 to prevent the first clamping member 21 from retracting and causing the clamping to loosen.

[0037] Furthermore, to ensure that the drive screw 24 does not move axially when rotating, in step S2, the drive screw 24 includes a limiting section 242 and a helical section for mating with the helical hole 212. A limiting member 25 is connected to the limiting section 242, and the width of the limiting member 25 is greater than that of the helical section. The base 23 is provided with a first abutting portion 234a and a second abutting portion 234b corresponding to the position of the limiting member 25. When the drive screw 24 rotates, the first abutting portion 234a and the second abutting portion 234b respectively abut against both ends of the limiting member 25, keeping the drive screw 24 in place.

[0038] Furthermore, in step S2, the limiting section 242 is located at the inner end position of the helical section, and the cross-sectional shape of the limiting section 242 is non-circular. The limiting member 25 is provided with a connecting groove 251 through it, and the cross-sectional shape of the connecting groove 251 matches the cross-sectional shape of the limiting section 242. The limiting section 242 is inserted into the connecting groove 251 and locked with screws. The first abutting portion 234a and the second abutting portion 234b are connected by two spaced-apart enclosing portions, and a receiving groove 234 is formed between the first abutting portion 234a, the second abutting portion 234b and the two enclosing portions. The limiting member 25 is located in the receiving groove 234 to save the space occupied on the base 23.

[0039] Furthermore, to ensure that there is enough seating space for the seated person, in step S2, the tray 1 includes a tray main body. The rear end of the tray main body has an extension portion 11 extending laterally outward. The left and right width of the extension portion 11 is smaller than the left and right width of the tray main body. The connecting assembly 2 is arranged at the lower end of the extension portion 11. In step S2, the connecting assembly 2 at the lower end of the extension portion 11 is connected to the corresponding armrest 61 to widen the avoidance space between the tray main body and the backrest 63 and prevent the tray main body from interfering with the upper body of the seated person.

[0040] Furthermore, in step S2, the base 23 is connected to the lower end of the tray 1, and its connection structure is as follows: The base 23 is provided with a plurality of insertion posts 232, and the tray 1 is provided with a plurality of countersunk holes 12. The countersunk holes 12 include a counterbore recessed from the upper end surface of the tray 1 and a plug hole extending downward from the bottom surface of the counterbore and penetrating the tray 1. The insertion posts 322 are inserted into the plug holes and locked with screws, and the heads of the screws are located in the counterbores, ensuring that the upper end surface of the tray 1 remains flat.

[0041] Furthermore, although the heads of the screws are located in the counterbores, the heads of the screws can still be seen by carefully observing the upper end surface of the tray 1, which has a greater impact on the appearance of the tray 1. Therefore, in this embodiment, a cover plate 4 is connected to the upper end surface of the tray 1. The cover plate 4 is fixed to the tray 1 by an adhesive method and covers the plurality of counterbores, making the tray 1 more simple and generous in appearance. In addition, the thickness of the cover plate 4 is much smaller than the thickness of the tray 1 and will not have too much impact on the flatness of the upper end surface of the tray 1.

[0042] Furthermore, to enhance the user experience of the tray 1, in step S2, a cup holder 5 for conveniently placing a water cup is provided on the left or right side of the tray 1. An insertion assembly is provided between the cup holder 5 and the tray 1, including a socket 51 provided on the tray 1 and a plug portion 52 provided on the cup holder 5. The socket 51 is provided with an insertion slot 51a with an open upper end. The plug portion 52 is inserted into or removed from the insertion slot 51a to connect or separate the cup holder 5 from the tray 1, enabling the seated person to quickly install the cup holder 5 on the tray 1 and quickly remove the cup holder 5 from the tray 1 when the cup holder 1 is not needed.

[0043] Furthermore, in step S3, when the tray 1 deflects as the backrest 63 rotates backward, the cup holder 5 and the water cup placed on the cup holder 5 will also be linked and tilted backward, but this can easily cause the drink in the water cup to spill. Therefore, to avoid this phenomenon, in this embodiment, an anti-tipping structure is provided between the socket 51 and the plug portion 52. The anti-tipping structure includes an arc-shaped guiding surface 511 provided at the bottom of the insertion slot 51a and an arc-shaped mating surface 521 provided on the outer wall of the plug portion 52. The arc-shaped mating surface 521 is in contact and cooperation with the arc-shaped guiding surface 511. When the tray 1 tilts backward under the linkage of the backward-rotating backrest 63, since the arc-shaped mating surface 521 and the arc-shaped guiding surface 511 are not a fixed structure and the cup holder 5 is only affected by the downward gravity, the arc-shaped guiding surface 511 forms a guiding effect on the arc-shaped mating surface 521. At this time, the plug portion 52 rotates adaptively relative to the socket 51, keeping the cup holder 5 and the water cup placed in the cup holder 5 always perpendicular to the ground and preventing the drink in the water cup from spilling.

[0044] Furthermore, when the backrest 63 in the reclined state rotates forward to return to the upright position, the tray 1 will also switch from the inclined support state to the horizontal support state. At this time, the arc-shaped guiding surface 511 in the insertion slot 51a will again form a guiding effect on the arc-shaped mating surface 521, causing the plug portion 52 to rotate adaptively relative to the socket 51 again, ensuring that the cup holder 5 and the water cup placed in the cup holder 5 always remain perpendicular to the ground and preventing the drink in the water cup from spilling.

[0045] Furthermore, to enable the plug portion 52 to smoothly cooperate with the insertion slot 51a, the plug portion 52 is connected to the cup holder 5 through a narrowed portion 522. The width of the narrowed portion 522 is smaller than the width of the plug portion 52. The socket 51 is provided with an avoidance slot 512 corresponding to the position of the narrowed portion 522 and having an open upper end. The avoidance slot 512 is communicated with the insertion slot 51a. When the plug portion 52 is inserted into or removed from the insertion slot 51a, the avoidance slot 512 avoids the narrowed portion 522 to prevent interference between the plug portion 52 and the socket 51 during up-and-down insertion.

[0046] Furthermore, the cup holder 5 is also provided with a pen placement hole 53 with an open upper end to facilitate the seated person to place a writing pen after finishing work.

[0047] Furthermore, the cup holder 5 includes an integrally formed supporting portion and an annular blocking portion. The annular blocking portion surrounds the supporting portion and forms a placement groove. There is one or more drainage holes 54 on the supporting portion. The drainage holes 54 can drain the drinks accidentally spilled into the cup holder 5, keeping the cup holder 5 clean.

[0048] Furthermore, the postures and sitting habits of different sitters are different, so the requirements for the distance between the tray 1 and themselves are also different. In this embodiment, this requirement is fully considered. When the sitter needs to adjust the distance between himself and the tray 1, he can follow step S5; S5: Control the first clamping member 21 and / or the second clamping member 21a to move and loosen the corresponding armrest 61, then adjust the front-back clamping positions of the first clamping member 21 and the second clamping member 21a on the corresponding armrest 61 in place, and then control the first clamping member 21 and / or the second clamping member 21a to move and clamp the corresponding armrest 61, so that the tray 1 is in place in front of the sitter; the sitter can adjust the distance between himself and the tray 1 according to his own needs, so that sitters with different postures and sitting habits can use the tray 1 more comfortably.

[0049] Furthermore, when the sitter needs to get up, usually the tray assembly needs to be removed. However, disassembling and assembling the tray assembly takes a long time, is inconvenient to operate, and will also affect the use experience of the tray and the office mentality of the sitter. Therefore, in step S1, the armrest 61 in this embodiment is rotatably connected to the top end of the armrest support arm 61a in the horizontal direction; when the sitter needs to get up and leave the seat, he can follow step S6; S6: Rotate the armrest 61 connected to the connection assembly outwards, so that the tray 1 rotates with the corresponding armrest 61 to the outside of the sitter, so as to create a space for the sitter to leave the seat; so that the sitter can leave the seat without removing the tray assembly, improving the use experience.

[0050] Embodiment 2: The difference between this embodiment and the above embodiment is that, as Figure 9-12 shown, the connection assembly in this embodiment is a rotational design. Specifically, in step S2, the connection assembly 2 includes a first clamping member 21 and a second clamping member 21a. The second clamping member 21a is fixed to the lower end of the tray 1; both the first clamping member 21 and the second clamping member 21a are provided with hinge portions. The two hinge portions are hinged to form a hinge end. A torsion spring that always makes the first clamping member 21 and the second clamping member 21a have a reset tendency is provided at the hinge end position; when the first clamping member 21 and the second clamping member 21a rotate outwards and open to a predetermined position, the torsion spring forces the first clamping member 21 and the second clamping member 21a to reset and clamp the armrest 61 fitted in the clamping space 22; when the tray assembly needs to be disassembled, rotating the first clamping member 21 can separate it from the armrest 61.

[0051] Furthermore, another design structure of the first clamping member 21 and the second clamping member 21a is provided in this embodiment: in step S2, the connecting assembly 2 includes a base 23 fixed to the lower end of the pallet 1. The first clamping member 21 and the second clamping member 21a are both hinged to the base 23 and form two hinged ends. A torsion spring that always makes the first clamping member 21 and the second clamping member 21a have a reset tendency is provided at the position of the hinged ends. When the first clamping member 21 and the second clamping member 21a rotate outward and open to a predetermined position, the torsion spring forces the first clamping member 21 and the second clamping member 21a to reset and clamp the armrest 61 fitted in the clamping space 22. When the pallet assembly needs to be disassembled, rotating the first clamping member 21 and the second clamping member 21a can separate them from the armrest 61.

[0052] Furthermore, a tension spring 26 can also be provided between the first clamping member 21 and the second clamping member 21a to provide a clamping reset force. Specifically, a tension spring 26 that always makes the first clamping member 21 and the second clamping member 21a have a reset tendency is fixedly connected between the first clamping member 21 and the second clamping member 21a. The tension spring 26 can provide sufficient clamping force for the first clamping member 21 and the second clamping member 21a to prevent the first clamping member 21 and the second clamping member 21a from loosening. At the same time, the tension spring 26 also connects the first clamping member 21 and the second clamping member 21a, making the connection effect between the connecting assembly and the armrest 61 more stable.

[0053] Furthermore, in addition to setting the tension spring 26 or the torsion spring to form sufficient clamping force between the first clamping member 21 and the second clamping member 21a, it can also be achieved by the cooperation of bolts and nuts. Specifically, adjusting parts are provided on both the first clamping member 21 and the second clamping member 21a. Adjusting holes extending along the width direction of the clamping space 22 are penetrated through the adjusting parts. An adjusting bolt 27 is simultaneously inserted into the two adjusting holes. A adjusting nut 28 is threadedly engaged with the tail of the adjusting bolt 27. The adjusting nut 28 is a wing nut for easy rotation. Rotating the adjusting nut 28 makes the two adjusting parts approach or move away from each other to adjust the width of the clamping space 22.

[0054] Embodiment 3: The difference between this embodiment and the above embodiment is that, as Figure 13 shown, in this embodiment, the first clamping member 21 and the second clamping member 21a are of a fixed design. Specifically, in step S2, the connecting assembly includes a base 23 and the first clamping member 21 and the second clamping member 21a fixed to the lower end of the base 23. A clamping space 22 is formed between the first clamping member 21 and the second clamping member 21a. At least one of the first clamping member 21 and the second clamping member 21a can generate elastic deformation along the width direction of the clamping space 22 under the action of an external force. Under the action of an external force, the first clamping member 21 and / or the second clamping member 21a undergo elastic deformation and open outward to a predetermined position to adjust the width of the clamping space 22 in place, thereby also forming a sufficient clamping force on the armrest 61.

[0055] Embodiment 4: The difference between this embodiment and the above embodiments is that, as Figure 14-15 shown, the connection method in this embodiment is different from that in the above embodiments. In step S2, the connection assembly 2 includes a socket member 7 and a wedge-shaped sliding member 71. The wedge-shaped sliding member 71 has a wedge surface 711. The wedge-shaped sliding member 7 is slidably connected to the lower end of the support plate 1 through a guide rail 75 provided at the lower end of the support plate 1; the socket member 7 has a socket groove 7a extending in the horizontal direction, where the width of the socket groove 7a matches the armrest 61, and the upper and lower thicknesses of the armrest 61 are less than the upper and lower widths of the socket groove 7a. The wedge-shaped sliding member 71 is slidably connected to the lower end of the support plate 1 and corresponds to the position of the socket groove 7a; when the sitter needs to use the support plate assembly, first insert the corresponding armrest 61 into the socket groove 7a to form a gap with the socket member 7, and then control the wedge-shaped sliding member 71 to slide in and fill the gap to clamp the armrest 61 and connect the support plate assembly to the corresponding armrest 61.

[0056] Furthermore, to keep the wedge-shaped sliding member 7 that has slid in place at the corresponding position, a screw hole extending in the horizontal direction is provided on the wedge-shaped sliding member 71. In step S2, the connection assembly further includes a driving member. The driving member is a screw rod 73 that is helically engaged in the screw hole and can rotate in place. The outer end of the screw rod 73 is fixedly connected with a handwheel 74. Rotate the handwheel 74 to make the wedge-shaped sliding member 71 slide horizontally into the clamping space 22 and stay at the corresponding position.

[0057] Furthermore, to prevent the screw rod 73 from axially moving, in step S2, a support seat 72 is provided at the lower end of the support plate 1. A through hole is provided on the support seat 72. The screw rod 73 is inserted through the through hole. Two limit nuts 76 are threadedly engaged on the screw rod 73 and are respectively located at both ends of the support seat 72. The two limit nuts 76 respectively abut against both ends of the support seat 72 to keep the screw rod 73 stationary when rotating.

[0058] The above schematically describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A seat configuration and use method, characterized in that: The following steps are involved: S1: The occupant sits on a seat with two armrests (61); S2: installing a support plate assembly according to requirements; the support plate assembly comprises a support plate (1) and a connecting assembly arranged on the support plate (1); when the seated person needs to use the support plate assembly, the connecting assembly is connected to one of the armrests (61) so that the support plate (1) remains in place in front of the seated person; S3: Use: The seated person uses the support plate (1) as a supporting carrier in an upright posture or a reclining posture.

2. The configuration and use method of a seat according to claim 1, characterized in that: In step S3, when the seated person maintains an upright posture while working on the chair, the support plate (1) maintains a horizontal supporting state in front of the seated person.

3. The configuration and use method of a seat according to claim 1, characterized in that: In step S1, the chair comprises a chair back (63) that can rotate forward and backward and an armrest support arm (61a) connected to the left and right sides of the chair back (63), the armrest support arm (61a) being connected to the armrest (61) at the top end, and the chair back (63) can be linked with the armrest (61) to tilt backward when rotating backward; in step S3, when the occupant switches from an upright posture to a reclining posture, the chair back (63) rotates backward and is linked with the support plate (1) through the corresponding armrest (61) to switch from a horizontal support state to a tilted support state with a higher front and a lower rear, so as to adapt to the sitting posture of the occupant in the reclining state.

4. The configuration and use method of a seat according to claim 3, characterized in that: In step S3, when the support plate (1) is switched to the inclined support state, the inclination angle range of the support plate (1) relative to the horizontal plane is 5°-25°.

5. The configuration and use method of a seat according to claim 3, characterized in that: In step S2, a blocking portion (3) for blocking office items is provided at the upper end of the support plate (1), and the blocking portion (3) protrudes upward from the upper end surface of the support plate (1); in step S3, when the support plate (1) is switched to the inclined support state, the blocking portion (3) blocks and prevents the items on the support plate (1) from sliding off.

6. The configuration and use method of a seat according to claim 1, characterized in that: In step S2, the connection assembly comprises a first clamping member (21) and a second clamping member (21a) located at the lower end of the support plate (1), a clamping space (22) is formed between the first clamping member (21) and the second clamping member (21a), and at least one of the first clamping member (21) and the second clamping member (21a) can move along the width direction of the clamping space (22) and stay at a corresponding position; when the seated person needs to use the support plate assembly, the first clamping member (21) and / or the second clamping member (21a) is controlled to move and stay at a corresponding position, so as to adjust the width of the clamping space (22) to correspond to the width of the armrest (61), so that the support plate assembly is clamped and fixed on the corresponding armrest (61).

7. The configuration and use method of a seat according to claim 6, characterized in that: When the seated person does not need to use the support plate assembly, step S4 may be performed; S4: controlling the first clamping member (21) and / or the second clamping member (21a) to move and release the corresponding handrail (61), and removing the support plate assembly from the corresponding handrail (61).

8. The configuration and use method of a seat according to claim 6, characterized in that: In step S2, the connection assembly includes a base (23) fixed to the lower end of the support plate (1), and the second clamping member (21a) is fixedly connected to the base (23); the base (23) is provided with a slide groove (231) extending along the width direction of the clamping space (22), and the first clamping member (21) is provided with a sliding connection portion (211) matching the slide groove (231), and the sliding connection portion (211) is slidably connected in the slide groove (231); when the seated person needs to use the support plate assembly, the sliding connection portion (211) slides in the slide groove (231) to adjust the width of the clamping space (22) to correspond to the width of the armrest (61).

9. The configuration and use method of a seat according to claim 8, characterized in that: In step S2, a spiral hole (212) extending along the width direction of the clamping space (22) is provided on the first clamping member (21), and the connecting assembly further comprises a driving member, which is a driving screw (24) that is spirally engaged in the spiral hole (212) and can rotate in situ, and a handle (241) is connected to the outer end of the driving screw (24). When the seated person needs to use the support plate assembly, the handle (241) is turned to make the first clamping member (21) slide along the width direction of the clamping space (22) and stay at a corresponding position.

10. The configuration and use method of a seat according to claim 9, characterized in that: In step S2, the driving screw rod (24) comprises a limiting section (242) and a spiral section for cooperating with the spiral hole (212); the limiting section (242) is connected to a limiting member (25); the width of the limiting member (25) is greater than the width of the spiral section; the base (23) is provided with a first abutting portion (234a) and a second abutting portion (234b) corresponding to the position of the limiting member (25); when the driving screw rod (24) rotates, the first abutting portion (234a) and the second abutting portion (234b) respectively abut against two ends of the limiting member (25), so that the driving screw rod (24) remains in place.

11. The configuration and use method of a seat according to claim 6, characterized in that: In step S2, the connection assembly comprises a first clamping member (21) and a second clamping member (21a), wherein the second clamping member (21a) is fixed to the lower end of the support plate (1); the first clamping member (21) and the second clamping member (21a) are both provided with hinged portions, the two hinged portions are hinged to form a hinged end, and a torsion spring is provided at the hinged end to enable the first clamping member (21) and the second clamping member (21a) to always have a reset tendency; when the first clamping member (21) and the second clamping member (21a) are rotated outward and opened to a predetermined position, the torsion spring forces the first clamping member (21) and the second clamping member (21a) to reset and clamp the armrest (61) matched and installed in the clamping space (22).

12. The configuration and use method of a seat according to claim 1, characterized in that: In step S2, the support plate (1) includes a support plate body, the rear end of the support plate body has an extension portion (11) extending outward laterally, the left and right width of the extension portion (11) is smaller than the left and right width of the support plate body, and a connecting component is arranged at the lower end of the extension portion (11). In step S2, the connecting component at the lower end of the extension portion (11) is connected to the corresponding armrest (61) to widen the avoidance space between the support plate body and the chair back (63).

13. The configuration and use method of a seat according to claim 6, characterized in that: In step S2, the connection assembly includes a base (23) fixed to the lower end of the support plate (1), the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23) to form two hinged ends, and a torsion spring is provided at the hinged end to enable the first clamping member (21) and the second clamping member (21a) to always have a reset tendency; when the first clamping member (21) and the second clamping member (21a) are rotated outward and opened to a predetermined position, the torsion spring forces the first clamping member (21) and the second clamping member (21a) to reset and clamp the armrest (61) installed in the clamping space (22).

14. The configuration and use method of a seat according to claim 1, characterized in that: In step S2, the connection assembly comprises a sleeve (7) and a wedge-shaped sliding member (71); the sleeve (7) has a sleeve groove (7a) extending in the horizontal direction; the wedge-shaped sliding member (71) is slidably connected to the lower end of the support plate (1) and corresponds to the position of the sleeve groove (7a); when the seated person needs to use the support plate assembly, the corresponding armrest (61) is first inserted into the sleeve groove (7a) to form a gap with the sleeve (7), and then the wedge-shaped sliding member (71) is controlled to slide into and fill the gap, so that the support plate assembly is connected to the corresponding armrest (61).

15. The configuration and use method of a seat according to claim 1, characterized in that: In step S2, a cup holder (5) for placing a water cup is provided on the left or right side of the support plate (1), and a plug-in assembly is provided between the cup holder (5) and the support plate (1), the plug-in assembly comprising a plug-in seat (51) provided on the support plate (1), and a plug-in portion (52) provided on the cup holder (5), the plug-in seat (51) being provided with a plug-in slot (51a) with an open upper end, the plug-in portion (52) being inserted into the slot (51a); an anti-dumping structure is provided between the plug-in portion (52) and the plug-in slot (51a), the anti-dumping structure comprising a plug-in slot (51a) provided in the plug-in slot (51a) The arcuate guide surface (511) is provided at the bottom of the groove, and the arcuate matching surface (521) is provided on the outer wall of the plug-in portion (52), and the arcuate matching surface (521) contacts and matches with the arcuate guide surface (511); in step S3, when the seated person switches between the upright posture and the reclining posture, the chair back (63) rotates in the front-to-back direction, and the arcuate guide surface (511) guides the arcuate matching surface (521), so that the plug-in portion (52) rotates adaptively relative to the plug-in socket (51), thereby keeping the cup holder (5) perpendicular to the ground.

16. The configuration and use method of a seat according to claim 6, characterized in that: When the seated person needs to adjust the distance between himself and the support plate (1), the process can be carried out according to step S5; S5: controlling the first clamping member (21) and / or the second clamping member (21a) to move and loosen the corresponding armrest (61), and then adjusting the front and rear clamping positions of the first clamping member (21) and the second clamping member (21a) on the corresponding armrest (61) to the correct position, and then controlling the first clamping member (21) and / or the second clamping member (21a) to move and clamp the corresponding armrest (61), so that the support plate (1) is kept in place in front of the seated person.

17. The configuration and use method of a seat according to claim 1, characterized in that: In step S1, the chair comprises a seat (62) and a backrest (63), the left and right sides of the seat (62) or the left and right sides of the backrest (63) are connected to armrest arms (61a), and the armrests (61) are connected to the tops of the armrest arms (61a) by rotating in a horizontal direction; when the seated person needs to stand up and leave the chair, step S6 can be followed; S6: The armrest (61) connected to the connection assembly is rotated outwardly, so that the support plate (1) rotates along with the corresponding armrest (61) to the outside of the seated person, so as to make room for the seated person to leave the seat.

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