Drive-by-wire adjustment device and adjustable seat

Abstract

This invention provides a wired adjustment device and an adjustable seat. The wired adjustment device includes a mounting base, a first component, and a second component. The first component includes a first adjusting member and a first drive rope. The first adjusting member is rotatably connected to the mounting base, and one end of the first drive rope is connected to the first adjusting member. The second component includes a second adjusting member and a second drive rope. The second adjusting member is rotatably connected to the mounting base, and a portion of the second drive rope wraps around the outer periphery of the second adjusting member. The first and second adjusting members are arranged adjacent to each other. The first adjusting member can rotate relative to the mounting base to pull the first drive rope, and the second adjusting member can rotate relative to the mounting base to pull the second drive rope. Because the first and second adjusting members are arranged adjacent to each other, when the user needs to adjust multiple parameters of the seat sequentially, the distance the user's hand travels is shorter, and the adjustment process takes less time, which improves the convenience of seat adjustment.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and more particularly to a wired adjustment device and an adjustable seat. Background Technology

[0002] Some chairs on the market offer multiple adjustment functions, such as adjustable backrest recline angle, adjustable seat cushion fore-aft position, and adjustable seat cushion height. Some chairs use ropes or cables to pull on a component, changing the chair's posture. For example, pulling a gas spring switch with a rope raises the seat cushion; pulling and releasing a latch that prevents the seat cushion from sliding forward or backward changes the fore-aft position; pulling a stop that prevents the backrest from rotating backward changes the backrest recline angle. However, this can be inconvenient when users need to adjust multiple parameters of the chair sequentially. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a wire-controlled adjustment device that can shorten the adjustment time and improve the convenience of seat adjustment when the user needs to adjust multiple parameters of the seat.

[0004] The present invention also provides an adjustable seat including the above-described wire-controlled adjustment device.

[0005] According to a first aspect of the present invention, a wire-controlled adjustment device includes: a mounting base; a first component, the first component including a first adjusting member and a first drive rope, the first adjusting member being rotatably connected to the mounting base, and one end of the first drive rope being connected to the first adjusting member; and a second component including a second adjusting member and a second drive rope, the second adjusting member being rotatably connected to the mounting base, and a portion of the second drive rope surrounding the outer periphery of the second adjusting member; wherein the first adjusting member and the second adjusting member are disposed adjacent to each other, the first adjusting member being rotatable relative to the mounting base to pull the first drive rope, and the second adjusting member being rotatable relative to the mounting base to pull the second drive rope.

[0006] The adjustable seat according to embodiments of the present invention has at least the following beneficial effects: Since the first and second adjusting members are arranged adjacent to each other, if a user needs to adjust multiple parameters of the seat sequentially, the user's hand only needs to move a short distance to reach the other adjusting member, eliminating the need for long hand movements. This helps to shorten the time required to adjust multiple parameters of the seat. In other words, the wired adjustment device provided by the present invention helps to shorten the adjustment process and improve the convenience of seat adjustment when a user needs to adjust multiple parameters of the seat.

[0007] According to some embodiments of the present invention, the second drive rope includes a first rope body and a second rope body, one end of the first rope body is connected to the second adjusting member, and one end of the second rope body is connected to the second adjusting member; a portion of the first rope body and a portion of the second rope body surround the second adjusting member, and the direction in which the first rope body surrounds the second adjusting member is opposite to the direction in which the second rope body surrounds the second adjusting member.

[0008] According to some embodiments of the present invention, the first rope body includes a first rope and a first connector, the first connector being connected to the end of the first rope near the second adjusting member; the second rope body includes a second rope and a second connector, the second connector being connected to the end of the second rope near the second adjusting member; the first rope and the second rope surround the second adjusting member; the second adjusting member has a first mounting groove and a second mounting groove, the first connector being accommodated in the first mounting groove, the second connector being accommodated in the second mounting groove, the groove wall of the first mounting groove being able to abut against the first connector so that the first connector can rotate synchronously with the second adjusting member, and the groove wall of the second mounting groove being able to abut against the second connector so that the second connector can rotate synchronously with the second adjusting member.

[0009] According to some embodiments of the present invention, the outer periphery of the second adjusting member has a third mounting groove and a fourth mounting groove, the third mounting groove communicating with the first mounting groove and the fourth mounting groove communicating with the second mounting groove; both the third mounting groove and the fourth mounting groove are arranged along the circumference of the second adjusting member, the third mounting groove accommodating the first rope and the fourth mounting groove accommodating the second rope.

[0010] According to some embodiments of the present invention, the second adjusting member includes a rotating wheel and a knob. Along the axial direction of the second adjusting member, the knob is connected to one end of the rotating wheel. The knob is capable of rotating synchronously with the second adjusting member. The second driving rope is wrapped around the outer periphery of the rotating wheel. The knob is for the user to touch.

[0011] According to some embodiments of the present invention, the first adjusting member includes a first connecting portion and a second connecting portion, the first connecting portion being rotatably connected to the mounting base, the second connecting portion being connected to the second drive rope, and the second connecting portion being spaced apart from the rotation axis of the first adjusting member.

[0012] According to some embodiments of the present invention, the second connecting portion has a receiving cavity, the end of the first driving rope is disposed in the receiving cavity, and the end of the first driving rope abuts against the wall of the receiving cavity.

[0013] According to some embodiments of the present invention, the side of the second connecting portion has a clearance groove, the clearance groove is in communication with the receiving cavity, and the first driving rope passes through the clearance groove.

[0014] According to some embodiments of the present invention, two first components are provided, and the second adjusting member is disposed between the two first adjusting members.

[0015] An adjustable seat according to a second aspect of the present invention includes: a chair leg, a seat cushion, a backrest, and a wired adjustment device according to a first aspect of the present invention. The seat cushion is disposed above the chair leg, the backrest is disposed behind the seat cushion, and the mounting seat is disposed at the bottom or side of the seat cushion.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the adjustable seat of the present invention;

[0019] Figure 2 A schematic diagram of the wire-controlled adjustment device of the present invention;

[0020] Figure 3 for Figure 2 A partial schematic diagram of the wire-controlled adjustment device in the middle;

[0021] Figure 4 for Figure 3 Exploded view of the wire-controlled adjustment device in the middle;

[0022] Figure 5 An assembly drawing of the first drive rope and the first adjusting component;

[0023] Figure 6 for Figure 4 A schematic diagram of the rotating wheel in the middle;

[0024] Figure 7 for Figure 6 A schematic diagram of the rotating wheel from another angle;

[0025] Figure 8 This is a schematic diagram of the portion of the second drive rope used to surround the rotating wheel in one embodiment of the present invention;

[0026] Figure 9 A schematic diagram illustrating the principle of changing the position of the adjusting block by rotating the second adjusting member (the second driving rope includes two ropes);

[0027] Figure 10 A schematic diagram illustrating the principle of changing the position of the adjusting block by rotating the second adjusting member (the second drive rope is set as a single rope).

[0028] Figure label:

[0029] 100-Adjustable seat, 101-Seat cushion, 102-Gas spring, 106-Seat leg, 107-Backrest, 200-Wired adjustment device, 201-Chassis, 202-Bracket, 204-Second adjustment component, 207-Connecting seat, 210-First adjustment component, 211-Knob, 501-Transition component, 503-Adjusting block, 504-Second drive rope, 702-Third mounting slot, 703-Fourth mounting slot, 704-Wheel, 705-Shaft, 901-Roller, 1001-First rope, 1002-Second rope, 10 03-First rope, 1004-First connector, 1005-Second rope, 1006-Second connector, 1201-First mounting groove, 1202-Second mounting groove, 1500-First drive rope, 1503-Mounting base, 1504-First housing, 1505-Second housing, 1601-First connecting part, 1602-Main body, 1603-Second connecting part, 1604-Third rope, 1605-Third connector, 1607-Shaft, 1608-Anti-slip groove, 1701-Receiving cavity, 1702-Avoiding groove. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0034] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] This invention provides a wired adjustment device 200, which includes a mounting base 1503, a first component, and a second component. Both the first and second components are used to adjust the posture of a seat, and are used to adjust different posture parameters of the seat. (See reference...) Figure 3 and Figure 4 The first component includes a first adjusting member 210 and a first drive rope 1500, and the second component includes a second adjusting member 204 and a second drive rope 504. (Refer to...) Figures 3 to 5 The first adjusting member 210 is rotatably connected to the mounting base 1503, and one end of the first drive rope 1500 is connected to the first adjusting member 210. When the first adjusting member 210 rotates relative to the mounting base 1503 (e.g., Figure 3 (The lower end of the first adjusting member 210 rotates upwards), and the first adjusting member 210 can pull the first drive rope 1500. (Refer to...) Figure 2 and Figure 3 The second adjusting member 204 is also rotatably connected to the mounting base 1503. A portion of the second drive rope 504 is wrapped around the outer periphery of the second adjusting member 204. When the second adjusting member 204 rotates relative to the mounting base 1503, it can pull the second drive rope 504. Both the first adjusting member 210 and the second adjusting member 204 can be touched by the user's hand, allowing the user to manually drive them to rotate. Furthermore, the first adjusting member 210 and the second adjusting member 204 are arranged adjacent to each other.

[0036] The seat (such as the adjustable seat 100 described in detail below) may have a posture adjustment mechanism. The end of the first drive rope 1500 away from the first adjuster 210 and the second drive rope 504 are both used to connect to a component that can change the seat's posture. When the first drive rope 1500 is pulled by the first adjuster 210, the posture adjustment mechanism changes a certain posture parameter of the seat; when the second drive rope 504 is pulled by the second adjuster 204, the posture adjustment mechanism changes another posture parameter of the seat. The posture parameters may specifically be the seat's recline angle, seat depth, seat height, etc. It should be noted that multiple first components can be provided, each used to adjust different posture parameters; similarly, multiple second components can be provided, each also used to adjust different posture parameters. For example, Figure 4 In the first component, there are two, and two first adjustment members 210 are respectively disposed on both sides of the second adjustment member 204; one first component is used to adjust the seat depth, and the other first component is used to adjust the seat height.

[0037] Reference Figure 1 The adjustable seat 100 includes a seat leg 106, a seat cushion 101, and a backrest 107. The seat cushion 101 is positioned above the seat leg 106, and the backrest 107 is positioned behind the seat cushion 101, with at least a portion of the backrest 107 positioned above the seat cushion 101. Figure 1 and Figure 2 The wired adjustment device 200 can be located on the side or bottom of the seat cushion 101. The adjustable seat also includes a bracket 202, a chassis 201, a gas spring 102, and a connecting seat 207. The bracket 202 is fixed relative to the chassis 201, the top of the bracket 202 is connected to the seat cushion 101, the connecting seat 207 is rotatably connected to the chassis 201, the backrest 107 is fixed relative to the connecting seat 207, and the gas spring 102 can be connected to the chassis 201.

[0038] The end of the first drive rope 1500 away from the first adjuster 210 can be connected to a component used to change the posture parameters of the seat. For example, if the first component is used to change the height of the adjustable seat 100 (i.e., the height of the seat cushion 101 relative to the chair leg 106), the end of the first drive rope 1500 away from the first adjuster 210 can be connected to the switch bolt of the gas spring 102. When the first adjuster 210 is pulled by the user, the first drive rope 1500 pulls the switch bolt, thereby causing the gas spring 102 to drive the seat cushion 101 to rise relative to the chair leg 106. Alternatively, the first component is used to change the fore-and-aft position of the seat cushion 101 relative to the chair leg 106 or the backrest 107. The end of the first drive rope 1500 away from the first adjustment member 210 can be connected to a locking block (not shown) used to prevent the seat cushion 101 from moving back and forth. When the first adjustment member 210 is pulled by the user, the first drive rope 1500 pulls the locking block and removes the locking block from the seat cushion 101. The seat cushion 101 can then move back and forth relative to the bracket 202 and the chair leg 106, thereby changing the seat depth of the adjustable seat 100 (i.e., the fore-and-aft position of the seat cushion 101 relative to the chair leg 106 or the backrest 107).

[0039] like Figure 10 As shown, the adjustable seat 100 also includes a transition piece 501 and an adjustment block 503. A second drive rope 504 passes around the transition piece 501 and connects to the adjustment block 503 (both the adjustment block 503 and the transition piece 501 can be installed at the bottom of the chassis 201). When the user rotates the second adjustment piece 204, the adjustment block 503 is pulled and moved by the second drive rope 504. The connecting seat 207 itself or a component fixed relative to the connecting seat 207 can abut against the bottom surface of the adjustment block 503, and the adjustment block 503 prevents the connecting seat 207 from rotating backward. The bottom surface height of the adjustment block 503 is different along the left and right directions (not specifically shown). When the connecting seat 207 itself (or a component fixed relative to the connecting seat 207) abuts against the adjustment block 503 at different positions, the angle between the connecting seat 207 and the chassis 201 is different, and the angle between the seat cushion 101 and the backrest 107 is different, thus changing the reclining angle of the adjustable seat 100.

[0040] Since the first adjustment member 210 and the second adjustment member 204 are arranged adjacent to each other, if the user needs to adjust different posture parameters of the seat one after another, the user's hand only needs to move a short distance to touch the other adjustment member. The user's hand does not need to move a long distance, which helps to shorten the time required to adjust multiple posture parameters of the seat, thereby improving the convenience of adjusting the posture of the seat.

[0041] The specific structure of the second component will be described in detail below.

[0042] Combination Figure 4 and Figure 5The second adjusting member 204 includes a rotating wheel 901 and a knob 211. Along the axial direction of the rotating wheel 901, the knob 211 is connected to one end of the rotating wheel 901 and can rotate synchronously with the rotating wheel 901. A second drive rope 504 surrounds the outer periphery of the second adjusting member 204 (specifically, it can surround the outer periphery of the rotating wheel 901). Because the second drive rope 504 surrounds the outer periphery of the rotating wheel 901, it is inconvenient for the user to directly contact and rotate the rotating wheel 901. The knob 211 serves as the part of the second adjusting member 204 that the user can touch and rotate. (See reference...) Figure 4 The circumferential surface of the knob 211 may have anti-slip grooves 1608. Setting anti-slip grooves 1608 helps to reduce the risk of slippage between the user's fingers and the knob 211.

[0043] Reference Figure 6 and Figure 7 The rotating wheel 901 includes a wheel portion 704 and a shaft portion 705. Along the axial direction of the rotating wheel 901, the shaft portion 705 protrudes from one end of the wheel portion 704. Figure 4 and Figure 7 The second drive rope 504 wraps around the wheel 704 and is connected to the wheel 704, while the shaft 705 is plugged into the knob 211.

[0044] Mounting bracket 1503 can be installed on the bottom or side of seat cushion 101. (See reference) Figure 4 The mounting base 1503 includes a first housing 1504 and a second housing 1505, the second housing 1505 covering one side of the first housing 1504 to form an inner cavity of the mounting base 1503. Figure 4 , Figure 6 and Figure 7 The wheel portion 704 of the rotating wheel 901 can be disposed inside the mounting base 1503, and the second drive rope 504 can pass through the interior of the mounting base 1503 and wrap around the wheel portion 704. The shaft portion 705 extends out to the outside of the mounting base 1503 and is connected to the knob 211 located outside the mounting base 1503.

[0045] In some embodiments, the second drive rope 504 may include two ropes. Specifically, refer to Figure 2 and Figure 3 The second drive rope 504 includes a first rope body 1001 and a second rope body 1002 that are separately arranged. (See reference...) Figure 9One end of the first rope 1001 is connected to the rotating wheel 901, and the other end can be connected to the adjusting block 503. One end of the second rope 1002 is connected to the rotating wheel 901, and the other end can bypass the transition piece 501 and connect to the adjusting block 503. Furthermore, both ends of the adjusting block 503 along its sliding direction are connected to the first rope 1001 and the second rope 1002, respectively. In addition, the first rope 1001 and the second rope 1002 surround the rotating wheel 901 in opposite directions; for example, if the first rope 1001 surrounds the rotating wheel 901 clockwise, then the second rope 1002 surrounds the rotating wheel 901 counterclockwise. (Refer to...) Figure 10 In other embodiments, the second drive rope 504 can also be a single rope. Accordingly, the materials of the pulley 901 and the second drive rope 504 need to be carefully selected to ensure sufficient friction between them and prevent slippage. Compared to using a single rope to simultaneously wrap around both the pulley 901 and the transition piece 501, this arrangement of the second drive rope 504 comprising two ropes helps reduce the risk of slippage between the second drive rope 5 and the pulley 901, and it does not place high demands on the surface roughness of the pulley 901.

[0046] Reference Figure 6 and Figure 7 In some embodiments, the second adjusting member 204 has a first mounting groove 1201 for receiving an end of the first rope 1001 and a second mounting groove 1202 for receiving an end of the second rope 1002. For example, the wheel portion 704 of the pulley 901 has the first mounting groove 1201 and the second mounting groove 1202. (Refer to...) Figure 8 or Figure 9 The first rope body 1001 includes a first rope 1003 and a first connector 1004, with one end of the first rope 1003 connected to the first connector 1004; the second rope body 1002 includes a second rope 1005 and a second connector 1006, with one end of the second rope 1005 connected to the second connector 1006. Figures 6 to 9 The first mounting groove 1201 is used to accommodate the first connector 1004, and the second mounting groove 1202 is used to accommodate the second connector 1006. The wall of the first mounting groove 1201 abuts against the first connector 1004 so that the rotation of the second adjusting member 204 can pull the first rope 1001; the wall of the second mounting groove 1202 abuts against the second connector 1006 so that the rotation of the second adjusting member 204 can pull the second rope 1002.

[0047] Reference Figure 7 and Figure 8In some embodiments, the outer periphery of the second adjusting member 204 further has a third mounting groove 702 and a fourth mounting groove 703 to prevent the first rope 1003 and the second rope 1005 from disengaging from the pulley 901. The third mounting groove 702 and the fourth mounting groove 703 may be disposed on the outer periphery of the wheel portion 704 of the pulley 901, and both are arranged circumferentially along the pulley 901. The third mounting groove 702 communicates with the first mounting groove 1201 and is used to accommodate a portion of the first rope 1003. The fourth mounting groove 703 communicates with the second mounting groove 1202 and is used to accommodate a portion of the second rope 1005. The groove wall of the third mounting groove 702 can impede the axial movement of the first rope 1003 along the pulley 901, and the groove wall of the fourth mounting groove 703 can impede the axial movement of the second rope 1005 along the pulley 901. Therefore, the third mounting slot 702 and the fourth mounting slot 703 can prevent the first rope 1003 and the second rope 1005 from detaching from the pulley 901.

[0048] The specific structure of the first component will be described in more detail below.

[0049] In some embodiments, the connection method between the first adjusting member 210 and the first drive rope 1500 is as follows: Figure 3 , Figure 4 As shown. The first adjusting member 210 includes a main body 1602, a first connecting part 1601, and a second connecting part 1603. The main body 1602 is for the user to touch and grasp, and both the first connecting part 1601 and the second connecting part 1603 are connected to the main body 1602. The first connecting part 1601 is rotatably connected to the mounting base 1503, and the second connecting part 1603 is connected to the end of the first drive rope 1500. The second connecting part 1603 is spaced apart from the rotation axis of the first adjusting member 210. (Refer to...) Figure 4 The first housing has a pivot 1607, through which a first connecting portion 1601 passes. The first connecting portion 1601 or the first adjusting member 210 can rotate around the pivot 1607, with the axis of the pivot 1607 serving as the axis of rotation for the first adjusting member 210. When the user moves the end of the main body 1602 away from the first connecting portion 1601, the first adjusting member 210 rotates upwards as a whole; as the second connecting portion 1603 rotates, the first drive rope 1500 is pulled.

[0050] Reference Figure 5In some embodiments, the second connecting portion 1603 has a receiving cavity 1701. The end of the first drive rope 1500 is disposed in the receiving cavity 1701 and abuts against the wall of the receiving cavity 1701; therefore, when the second connecting portion 1603 rotates, the first drive rope 1500 is pulled. This arrangement helps reduce the assembly difficulty of the first drive rope 1500 and the first adjusting member 210. The first drive rope 1500 includes a third rope 1604 and a third connector 1605, the third connector 1605 being connected to one end of the third rope 1604 and disposed in the receiving cavity 1701. (Refer to...) Figure 5 The second connecting part 1603 also has a relief groove 1702, which communicates with the receiving cavity 1701 and surrounds the receiving cavity 1701. The third rope 1604 of the first drive rope 1500 passes through the relief groove 1702. The relief groove 1702 can improve the connection between the first drive rope 1500 and the first adjusting member 210.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An adjustable seat, characterized in that, The chair includes chair legs, a seat cushion, a backrest, a wired adjustment device, a connecting seat, a transition piece, an adjustment block, and a chassis. The seat cushion is positioned above the chair legs, and the backrest is positioned behind the seat cushion. The connecting seat is rotatably connected to the chassis, and the backrest is fixed relative to the connecting seat. The wired adjustment device includes: Mounting base, wherein the mounting base is disposed at the bottom or side of the seat cushion; A first component includes a first adjusting member and a first driving rope. The first adjusting member is rotatably connected to the mounting base, and one end of the first driving rope is connected to the first adjusting member. The first adjusting member includes a first connecting part and a second connecting part. The first connecting part is rotatably connected to the mounting base, and the second connecting part is spaced apart from the rotation axis of the first adjusting member. The second component includes a second adjusting member and a second drive rope. The second connecting part is connected to the second drive rope. The second adjusting member is rotatably connected to the mounting base. A portion of the second drive rope is wrapped around the outer periphery of the second adjusting member. The second adjusting member includes a wheel and a knob. Along the axial direction of the second adjusting member, the knob is connected to one end of the wheel. The knob can rotate synchronously with the second adjusting member. The second drive rope is wrapped around the outer periphery of the wheel. The knob is for the user to touch. The first adjusting member and the second adjusting member are arranged adjacent to each other. The first adjusting member can rotate relative to the mounting base to pull the first driving rope, and the second adjusting member can rotate relative to the mounting base to pull the second driving rope. Both the transition piece and the adjusting block are installed at the bottom of the chassis. The second drive rope passes around the transition piece and is connected to the adjusting block. The adjusting block can be moved by being pulled by the second drive rope. When the connecting seat and the adjusting block abut at different positions, the angle between the connecting seat and the chassis is different, and the angle between the seat cushion and the backrest is different.

2. The adjustable seat according to claim 1, characterized in that, The second drive rope includes a first rope body and a second rope body, one end of the first rope body is connected to the second adjusting member, and one end of the second rope body is connected to the second adjusting member; A portion of the first rope and a portion of the second rope surround the second adjusting member, and the direction in which the first rope surrounds the second adjusting member is opposite to the direction in which the second rope surrounds the second adjusting member.

3. The adjustable seat according to claim 2, characterized in that, The first rope body includes a first rope and a first connector, the first connector being connected to the end of the first rope near the second adjusting member; the second rope body includes a second rope and a second connector, the second connector being connected to the end of the second rope near the second adjusting member; the first rope and the second rope are wrapped around the second adjusting member. The second adjusting member has a first mounting groove and a second mounting groove. The first connector is accommodated in the first mounting groove, and the second connector is accommodated in the second mounting groove. The groove wall of the first mounting groove can abut against the first connector so that the first connector can rotate synchronously with the second adjusting member. The groove wall of the second mounting groove can abut against the second connector so that the second connector can rotate synchronously with the second adjusting member.

4. The adjustable seat according to claim 3, characterized in that, The outer periphery of the second adjusting member has a third mounting groove and a fourth mounting groove, the third mounting groove communicating with the first mounting groove and the fourth mounting groove communicating with the second mounting groove; Both the third mounting groove and the fourth mounting groove are arranged circumferentially along the second adjusting member. The third mounting groove accommodates the first rope, and the fourth mounting groove accommodates the second rope.

5. The adjustable seat according to claim 1, characterized in that, The second connecting part has a receiving cavity, and the end of the first driving rope is disposed in the receiving cavity, and the end of the first driving rope abuts against the wall of the receiving cavity.

6. The adjustable seat according to claim 5, characterized in that, The second connecting part has a clearance groove on its side, the clearance groove is in communication with the receiving cavity, and the first driving rope passes through the clearance groove.

7. The adjustable seat according to claim 1, characterized in that, The first component is provided in two parts, and the second adjustment member is disposed between the two first adjustment members.

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