Novel clamping seat structure

Abstract

The utility model relates to a novel clamping seat structure which comprises a main body unit, at least one armrest unit, a backrest unit and a lifting driving unit. The chair has the advantages that the main body unit is connected with the armrest unit in a clamping manner, and multiple choices are provided by the design that at least one armrest unit is arranged. A user can freely choose to mount or dismount the handrail according to actual requirements, for example, when the space is relatively narrow, the handrail is dismounted to save the space; when additional supporting is needed, the handrail is installed to guarantee safety. The flexible installation mode meets diversified use requirements, and the limitation of a traditional clamping seat fixing structure is broken through. The backrest unit and the lifting driving unit are matched for use, so that the backrest unit can be driven to move up and down. A user can flexibly adjust the height of the backrest according to the height, the sitting posture habit and the requirements of different use scenes (such as dining, reading and resting), so that the backrest is perfectly attached to the back of the human body.

Description

Technical Field

[0001] This utility model relates to the technical field of card holders, and in particular to a novel card holder structure. Background Technology

[0002] Booth seating is a type of furniture that combines practicality and aesthetics, commonly found in restaurants, cafes, and homes. Structurally, it generally consists of a backrest, seat cushion, and base. The backrest is ergonomically designed to provide comfortable support for the back; the seat cushion is filled with high-elasticity foam, offering a soft feel and quick rebound, preventing sagging even after prolonged sitting. Functionally, booth seating effectively utilizes space, especially suitable for narrow or corner areas. Placing it against a wall or window saves a significant amount of space, and it can be customized and combined with storage cabinets to increase storage capacity for tableware, books, and other items. In social settings, booth seating creates a relatively private space, and the enclosed layout facilitates interaction and enhances the atmosphere. Moreover, its appearance is diverse; a minimalist modern style suits fashionable spaces, while a retro carved design adds an elegant touch. By matching colors, materials, and the overall environment, booth seating becomes a highlight of the space's decor, satisfying practical needs while elevating the space's style.

[0003] Existing booth seating structures are relatively fixed, limiting their flexibility and adaptability to different spaces. Most traditional booths adopt an integrated design, with the backrest, seat cushion, and base tightly connected. This results in a large overall size and weight, requiring multiple people to work together and consuming a lot of manpower for both everyday relocation in a home and relocation in a commercial space. In narrow corridors and elevator entrances, fixed-structure booths are often difficult to pass through, and may even cause scratches and damage to door frames and walls due to forced movement, or cause cracks and surface wear to the booth components themselves.

[0004] Currently, there is no effective solution to the problem that the fixed card slot structure in related technologies limits its flexibility and space adaptability. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel card holder structure that solves the problem that the card holder structure in related technologies is relatively fixed, limiting its flexibility and spatial adaptability.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A novel card holder structure includes:

[0008] The main body unit is disposed on a horizontal plane;

[0009] At least one handrail unit is removably disposed on the side of the main body unit;

[0010] A backrest unit, which is removably disposed at the top of the main body unit;

[0011] A lifting drive unit is removably disposed inside the main body unit and detachably connected to the bottom end of the backrest unit, for driving the backrest unit to reciprocate in the vertical direction.

[0012] In some embodiments, the main body unit includes:

[0013] The main body element is disposed on a horizontal plane, the armrest unit is disposed on the side of the main body element, and the backrest unit is disposed on the top of the main body element;

[0014] A first cushion element is removably disposed at the top of the main body element;

[0015] A cavity element is disposed at the top of the main body element, and the lifting drive unit is disposed on the inner side of the cavity element.

[0016] In some embodiments, the main body unit further includes:

[0017] At least one first snap-fit ​​element is disposed on the side of the main body element and is detachably connected to the handrail unit to restrict the movement of the handrail unit.

[0018] In some embodiments, the armrest unit includes:

[0019] Handrail elements are removably disposed on the side of the main body unit.

[0020] In some embodiments, the armrest unit further includes:

[0021] The second snap-fit ​​element is disposed on the side of the armrest element and is detachably connected to the main body unit to restrict the movement of the armrest element.

[0022] In some embodiments, the backrest unit includes:

[0023] A backrest element is removably disposed at the top of the main body unit and connected to the lifting drive unit for reciprocating motion in the vertical direction under the action of the lifting drive unit.

[0024] A second cushion element is removably disposed at the end of the backrest element.

[0025] In some embodiments, the lifting drive unit includes:

[0026] A first support element is removably disposed inside the main body unit;

[0027] A lifting element is movably disposed inside the main body unit. The top of the lifting element is provided with the backrest unit and is located at the top of the first support element, for driving the backrest unit to reciprocate in the vertical direction.

[0028] A first rotating element is disposed at the bottom end of the lifting element;

[0029] The second rotating element is disposed at the top of the first support element and is rotatably connected to the first support element and the first rotating element respectively, and is used to drive the lifting element to reciprocate in the vertical direction;

[0030] A driving element is disposed between the first support element and the lifting element, and is connected to the second rotating element for driving the second rotating element to rotate circumferentially along the first rotating element.

[0031] In some embodiments, the lifting drive unit further includes:

[0032] At least one first sliding element is disposed at the bottom end of the lifting element;

[0033] At least one second sliding element is disposed at the top of the first support element and slidably connected to the first sliding element, for causing the lifting element to reciprocate along the axial direction of the second sliding element.

[0034] In some embodiments, the lifting drive unit further includes:

[0035] At least one first limiting element is disposed inside the first sliding element;

[0036] At least one second limiting element is provided, which is disposed at the top end of the second sliding element and is limitedly connected to the first limiting element, and is used to cooperate with the first limiting element to limit the movement range of the lifting element.

[0037] In some embodiments, the lifting drive unit further includes:

[0038] A second support element is disposed at the top of the first support element, and the driving element is disposed at the top of the second support element and connected to the first support element and the driving element respectively.

[0039] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0040] 1. The main body unit and armrest unit are connected by a snap-fit ​​mechanism, with at least one armrest unit providing multiple options. Users can freely choose to install or remove the armrests according to their actual needs. For example, in confined spaces, the armrests can be removed to save space; when additional support is needed, the armrests can be installed for safety. This flexible installation method meets diverse usage needs and breaks the limitations of traditional fixed seat structures. The backrest unit and lifting drive unit work together to move the backrest unit up and down. Users can flexibly adjust the backrest height according to their height, posture habits, and different usage scenarios (such as dining, reading, and resting), ensuring a perfect fit between the backrest and the user's back, providing more comfortable and effective support, reducing fatigue from prolonged sitting, and improving comfort and flexibility.

[0041] 2. The relatively independent structure of each unit facilitates targeted repair and replacement in case of malfunction or damage. For example, if the armrest unit is damaged, it can be replaced individually without requiring extensive repairs to the entire seating area, thus reducing maintenance difficulty and costs and extending the service life of the seating area. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural diagram of the novel card holder structure according to an embodiment of the present utility model;

[0043] Figure 2 This is an exploded view of a novel card holder structure according to an embodiment of the present utility model;

[0044] Figure 3 This is a structural schematic diagram of the novel card holder structure according to another state of the present utility model embodiment;

[0045] Figure 4 This is a three-dimensional structural diagram of the main unit according to an embodiment of the present utility model;

[0046] Figure 5 This is a three-dimensional structural schematic diagram of the armrest unit according to an embodiment of the present utility model;

[0047] Figure 6 This is a three-dimensional structural diagram of the backrest unit according to an embodiment of the present utility model;

[0048] Figure 7a This is an exploded view of the lifting drive unit according to an embodiment of the present utility model;

[0049] Figure 7b This is a cross-sectional view of a portion of the lifting drive unit according to an embodiment of the present utility model.

[0050] The reference numerals in the accompanying drawings are: 10, main body unit; 11, main body element; 12, first soft pad element; 13, cavity element; 14, first snap-fit ​​element;

[0051] 20. Handrail unit; 21. Handrail component; 22. Second snap-fit ​​component;

[0052] 30. Backrest unit; 31. Backrest element; 32. Second cushion element;

[0053] 40. Lifting drive unit; 41. First support element; 42. Lifting element; 43. First rotating element; 44. Second rotating element; 45. Drive element; 46. First sliding element; 47. Second sliding element; 48. First limiting element; 49. Second limiting element; 410. Second support element. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0056] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0057] An illustrative embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 As shown, a novel seating structure includes a main body unit 10, at least one armrest unit 20, a backrest unit 30, and a lifting drive unit 40. The main body unit 10 is disposed on a horizontal plane; the armrest unit 20 is removably disposed on the side of the main body unit 10; the backrest unit 30 is removably disposed on the top of the main body unit 10; and the lifting drive unit 40 is removably disposed inside the main body unit 10 and detachably connected to the bottom of the backrest unit 30, for driving the backrest unit 30 to reciprocate vertically.

[0058] In some embodiments, there are multiple handrail units 20. The multiple handrail units 20 are symmetrically arranged on both sides of the main body unit 10.

[0059] In some of the embodiments, a handrail unit 20 is provided on one side of the main body unit 10 and another handrail unit 20 is provided on the other side of the main body unit 10.

[0060] like Figure 4 As shown, the main body unit 10 includes a main body element 11, a first cushion element 12, and a cavity element 13. The main body element 11 is disposed on a horizontal plane, with an armrest unit 20 on its side and a backrest unit 30 on its top. The first cushion element 12 is removably disposed on the top of the main body element 11. The cavity element 13 is disposed on the top of the main body element 11, and a lifting drive unit 40 is disposed inside the cavity element 13.

[0061] The cross-section of the main component 11 is rectangular.

[0062] In some of these embodiments, the main component 11 is made of metal.

[0063] In some of these embodiments, the main component 11 is a base.

[0064] The cross-section of the first cushion element 12 is rectangular.

[0065] The dimensions of the first cushion element 12 are matched with the dimensions of the main body element 11. Generally, the length of the first cushion element 12 is equal to the length of the main body element 11, the width of the first cushion element 12 is less than the width of the main body element 11, and the height of the first cushion element 12 is less than the height of the main body element 11.

[0066] In some embodiments, the first cushion element 12 is detachably connected to the body element 11. For example, the first cushion element 12 and the body element 11 are connected by Velcro.

[0067] In some of these embodiments, the first cushion element 12 is made of high-density sponge material.

[0068] In some of these embodiments, the first cushion element 12 is a first cushion.

[0069] The cross-section of the cavity element 13 is rectangular.

[0070] The dimensions of the cavity element 13 are matched with the dimensions of the main body element 11. Generally, the length of the cavity element 13 is less than the length of the main body element 11, the width of the cavity element 13 is less than the width of the main body element 11, and the height of the cavity element 13 is less than the height of the main body element 11.

[0071] In some of these embodiments, cavity element 13 is a cavity.

[0072] Furthermore, the main body unit 10 also includes at least one first snap-fit ​​element 14. The first snap-fit ​​element 14 is disposed on the side of the main body unit 11 and is detachably connected to the handrail unit 20 to restrict the movement of the handrail unit 20.

[0073] In some embodiments, the first snap-fit ​​element 14 includes a first snap-fit ​​groove and a second snap-fit ​​groove. The first snap-fit ​​groove is disposed on the side of the main body element 11 and is detachably connected to the armrest unit 20; the second snap-fit ​​groove is disposed at the bottom end inside the first snap-fit ​​groove and is detachably connected to the armrest unit 20.

[0074] The dimensions of the first card slot are matched with the dimensions of the main body component 11. Generally, the length of the first card slot is less than the width of the main body component 11, the width of the first card slot is less than the length of the main body component 11, and the height of the first card slot is less than the height of the main body component 11.

[0075] The dimensions of the second snap-fit ​​slot match the dimensions of the main body component 11. Generally, the length of the second snap-fit ​​slot is less than the width of the main body component 11, the width of the second snap-fit ​​slot is less than the length of the main body component 11, and the height of the second snap-fit ​​slot is less than the height of the main body component 11.

[0076] The dimensions of the second card slot match those of the first card slot. Generally, the length of the second card slot is equal to the length of the first card slot, the width of the second card slot is less than the width of the first card slot, and the height of the second card slot is less than the height of the first card slot.

[0077] The number of first snap-fit ​​elements 14 matches the number of armrest units 20. Generally, the number of first snap-fit ​​elements 14 is equal to the number of armrest units 20.

[0078] In some embodiments, there are multiple first snap-fit ​​elements 14. The multiple first snap-fit ​​elements 14 are symmetrically arranged on both sides of the main body element 11.

[0079] In some embodiments, a first snap-fit ​​element 14 is provided on one side of the main body element 11 and another first snap-fit ​​element 14 is provided on the other side of the main body element 11.

[0080] like Figure 5 As shown, the armrest unit 20 includes an armrest element 21. The armrest element 21 is removably disposed on the side of the main body unit 10.

[0081] Specifically, the armrest element 21 is removably disposed on the side of the main body element 11.

[0082] The dimensions of the handrail element 21 match the dimensions of the main body element 11. Generally, the width of the handrail element 21 is smaller than the width of the main body element 11, and the height of the handrail element 21 is greater than the height of the main body element 11.

[0083] In some of these embodiments, the armrest element 21 is made of metal.

[0084] In some of these embodiments, the armrest element 21 is an armrest.

[0085] Furthermore, the handrail unit 20 also includes a second snap-fit ​​element 22. The second snap-fit ​​element 22 is disposed on the side of the handrail element 21 and is detachably connected to the main body unit 10 to restrict the movement of the handrail element 21.

[0086] Specifically, the second snap-fit ​​element 22 snaps into the first snap-fit ​​element 14.

[0087] More specifically, the second snap-fit ​​element 22 snaps into the first snap-fit ​​slot and the second snap-fit ​​slot respectively.

[0088] In some embodiments, the second snap-fit ​​element 22 includes a first snap-fit ​​plate and a second snap-fit ​​plate. The first snap-fit ​​plate is disposed on the side of the handrail element 21 and snaps into a first snap-fit ​​groove; the second snap-fit ​​plate is disposed at the bottom end of the first snap-fit ​​plate and snaps into a second snap-fit ​​groove.

[0089] The dimensions of the first snap-fit ​​plate are matched with the dimensions of the handrail element 21. Generally, the length of the first snap-fit ​​plate is less than the length of the handrail element 21, the width of the first snap-fit ​​plate is less than the width of the handrail element 21, and the height of the first snap-fit ​​plate is less than the height of the handrail element 21.

[0090] The dimensions of the first snap-fit ​​plate match the dimensions of the first snap-fit ​​element 14. Generally, the length of the first snap-fit ​​plate is equal to the length of the first snap-fit ​​slot, the width of the first snap-fit ​​plate is equal to the width of the first snap-fit ​​slot, and the height of the first snap-fit ​​plate is less than the height of the first snap-fit ​​slot.

[0091] The dimensions of the second snap-fit ​​plate are matched with the dimensions of the handrail element 21. Generally, the length of the second snap-fit ​​plate is less than the length of the handrail element 21, the width of the second snap-fit ​​plate is less than the width of the handrail element 21, and the height of the second snap-fit ​​plate is less than the height of the handrail element 21.

[0092] The dimensions of the second snap-fit ​​plate match the dimensions of the first snap-fit ​​element 14. Generally, the length of the second snap-fit ​​plate is equal to the length of the second snap-fit ​​slot, the width of the second snap-fit ​​plate is equal to the width of the second snap-fit ​​slot, and the height of the second snap-fit ​​plate is equal to the height of the second snap-fit ​​slot.

[0093] The dimensions of the second snap-fit ​​plate are matched with those of the first snap-fit ​​plate. Generally, the length of the second snap-fit ​​plate is equal to the length of the first snap-fit ​​plate, the width of the second snap-fit ​​plate is less than the width of the first snap-fit ​​plate, and the height of the second snap-fit ​​plate is greater than the height of the first snap-fit ​​plate.

[0094] The sum of the height of the second card plate and the height of the first card plate is not greater than the height of the first card slot.

[0095] In some embodiments, the second snap-fit ​​element 22 is fixedly connected to the handrail element 21, including but not limited to bolt connection.

[0096] In some of these embodiments, the second snap-fit ​​element 22 is made of metal.

[0097] like Figure 6 As shown, the backrest unit 30 includes a backrest element 31 and a second cushion element 32. The backrest element 31 is removably disposed at the top of the main body unit 10 and connected to the lifting drive unit 40 for reciprocating motion in the vertical direction under the action of the lifting drive unit 40; the second cushion is removably disposed at the end of the backrest element 31.

[0098] Specifically, the backrest element 31 is removably disposed at the top of the main body element 11.

[0099] The backrest element 31 has a rectangular cross-section.

[0100] The dimensions of the backrest element 31 match the dimensions of the main body element 11. Generally, the length of the backrest element 31 is equal to the length of the main body element 11, the width of the backrest element 31 is less than the width of the main body element 11, and the height of the backrest element 31 is less than the height of the main body element 11.

[0101] In some of these embodiments, the backrest element 31 is made of metal.

[0102] In some of these embodiments, the backrest element 31 is a backrest.

[0103] The cross-section of the second cushion element 32 is rectangular.

[0104] The dimensions of the second cushion element 32 are matched with the dimensions of the backrest element 31. Generally, the length of the second cushion element 32 is less than the length of the backrest element 31, the width of the second cushion element 32 is less than the width of the backrest element 31, and the height of the second cushion element 32 is less than the height of the backrest element 31.

[0105] In some embodiments, the second cushion element 32 is detachably connected to the backrest element 31. For example, the second cushion element 32 and the backrest element 31 are connected by Velcro.

[0106] In some of these embodiments, the second cushion element 32 is made of high-density sponge material.

[0107] In some of these embodiments, the second cushion element 32 is a second cushion.

[0108] like Figure 7a , Figure 7b As shown, the lifting drive unit 40 includes a first support element 41, a lifting element 42, a first rotating element 43, a second rotating element 44, and a drive element 45. The first support element 41 is removably disposed inside the main body unit 10; the lifting element 42 is movably disposed inside the main body unit 10, with a backrest unit 30 at its top and located at the top of the first support element 41, for driving the backrest unit 30 to reciprocate vertically; the first rotating element 43 is disposed at the bottom of the lifting element 42; the second rotating element 44 is disposed at the top of the first support element 41 and rotatably connected to both the first support element 41 and the first rotating element 43, for driving the lifting element 42 to reciprocate vertically; the drive element 45 is disposed between the first support element 41 and the lifting element 42 and is drively connected to the second rotating element 44, for driving the second rotating element 44 to rotate circumferentially around the first rotating element 43.

[0109] Specifically, the first support element 41 is disposed at the bottom of the cavity element 13 and is detachably connected to the main body element 11; the lifting element 42 is movably disposed on the inner side of the cavity element 13, and the top of the lifting element 42 is detachably connected to the bottom of the backrest element 31.

[0110] The cross-section of the first support element 41 is rectangular.

[0111] The dimensions of the first support element 41 are matched with the dimensions of the cavity element 13. Generally, the length of the first support element 41 is equal to the length of the cavity element 13, the width of the first support element 41 is equal to the width of the cavity element 13, and the height of the first support element 41 is less than the height of the cavity element 13.

[0112] In some embodiments, the first support element 41 is detachably connected to the main body element 11. For example, the first support element 41 is connected to the main body element 11 by bolts.

[0113] In some of these embodiments, the first support element 41 is made of metal.

[0114] In some of these embodiments, the first support element 41 is a support plate.

[0115] The lifting element 42 has a rectangular cross-section.

[0116] The dimensions of the lifting element 42 are matched with the dimensions of the cavity element 13. Generally, the length of the lifting element 42 is equal to the length of the cavity element 13, the width of the lifting element 42 is equal to the width of the cavity element 13, and the height of the lifting element 42 is less than the height of the cavity element 13.

[0117] The dimensions of the lifting element 42 are matched with the dimensions of the backrest element 31. Generally, the length of the lifting element 42 is less than the length of the backrest element 31, the width of the lifting element 42 is not greater than the width of the backrest element 31, and the height of the lifting element 42 is less than the height of the backrest element 31.

[0118] In some embodiments, the lifting element 42 is detachably connected to the backrest element 31. For example, the lifting element 42 and the backrest element 31 are connected by bolts.

[0119] In some of these embodiments, the lifting element 42 is made of metal.

[0120] In some of these embodiments, the lifting element 42 is a lifting plate.

[0121] The cross-section of the first rotating element 43 is circular.

[0122] The dimensions of the first rotating element 43 are matched with the dimensions of the lifting element 42. Generally, the radial dimension of the first rotating element 43 is smaller than the length and width of the lifting element 42, and the axial dimension of the first rotating element 43 is smaller than the height of the lifting element 42.

[0123] In some of these embodiments, the first rotating element 43 is a threaded hole.

[0124] The cross-section of the second rotating element 44 is circular.

[0125] The dimensions of the second rotating element 44 are matched with the dimensions of the first support element 41. Generally, the radial dimension of the second rotating element 44 is smaller than the length and width of the first support element 41, and the axial dimension of the second rotating element 44 is larger than the height of the first support element 41.

[0126] The dimensions of the second rotating element 44 are matched with those of the first rotating element 43. Generally, the radial dimension of the second rotating element 44 is equal to the radial dimension of the first rotating element 43, and the axial dimension of the second rotating element 44 is greater than the axial dimension of the first rotating element 43.

[0127] In some embodiments, the second rotating element 44 and the first support element 41 are rotatably connected without separation. For example, the second rotating element 44 and the first support element 41 are connected via a bearing housing.

[0128] In some of these embodiments, the second rotating element 44 is threadedly connected to the first rotating element 43.

[0129] In some of these embodiments, the second rotating element 44 is made of metal.

[0130] In some of these embodiments, the second rotating element 44 is a lead screw.

[0131] In some embodiments, the drive element 45 is drive-connected to the second rotating element 44. For example, the drive element 45 and the second rotating element 44 are connected via a drive gear and a drive belt.

[0132] In some of these embodiments, the drive element 45 is a servo motor.

[0133] Furthermore, the lifting drive unit 40 also includes at least one first sliding element 46 and at least one second sliding element 47. The first sliding element 46 is disposed at the bottom end of the lifting element 42; the second sliding element 47 is disposed at the top end of the first support element 41 and is slidably connected to the first sliding element 46, for causing the lifting element 42 to reciprocate along the axial direction of the second sliding element 47.

[0134] The cross-section of the first sliding element 46 is circular.

[0135] The dimensions of the first sliding element 46 are matched with the dimensions of the lifting element 42. Generally, the radial dimension of the first sliding element 46 is smaller than the length and width of the lifting element 42, and the axial dimension of the first sliding element 46 is smaller than the height of the lifting element 42.

[0136] In some embodiments, there are multiple first sliding elements 46. The multiple first sliding elements 46 are distributed along the length direction of the lifting element 42.

[0137] In some embodiments, a first sliding element 46 is provided on one side of the lifting element 42 and a first sliding element 46 is provided on the other side of the lifting element 42.

[0138] In some of these embodiments, the first sliding element 46 is a sliding hole.

[0139] The cross-section of the second sliding element 47 is circular.

[0140] The dimensions of the second sliding element 47 are matched with the dimensions of the first support element 41. Generally, the radial dimension of the second sliding element 47 is smaller than the length and width of the first support element 41, and the axial dimension of the second sliding element 47 is larger than the height of the first support element 41.

[0141] The dimensions of the second sliding element 47 are matched with the dimensions of the first sliding element 46. Generally, the radial dimension of the second sliding element 47 is equal to the radial dimension of the first sliding element 46, and the axial dimension of the second sliding element 47 is greater than the axial dimension of the first sliding element 46.

[0142] The number of second sliding elements 47 matches the number of first sliding elements 46. Generally, the number of second sliding elements 47 is equal to the number of first sliding elements 46.

[0143] In some embodiments, there are multiple second sliding elements 47. The multiple second sliding elements 47 are distributed along the length direction of the first support element 41.

[0144] In some embodiments, a second sliding element 47 is provided on one side of the first support element 41 and a second sliding element 47 is provided on the other side of the first support element 41.

[0145] In some embodiments, the second sliding element 47 is fixedly connected to the first support element 41, including but not limited to welding.

[0146] In some of these embodiments, the second sliding element 47 is a sliding rod.

[0147] Furthermore, the lifting drive unit 40 also includes at least one first limiting element 48 and at least one second limiting element 49. The first limiting element 48 is disposed inside the first sliding element 46; the second limiting element 49 is disposed at the top of the second sliding element 47 and is limitedly connected to the first limiting element 48, and is used to cooperate with the first limiting element 48 to limit the movement range of the lifting element 42.

[0148] The cross-section of the first limiting element 48 is circular.

[0149] The dimensions of the first limiting element 48 are matched with the dimensions of the lifting element 42. Generally, the radial dimension of the first limiting element 48 is smaller than the length and width of the lifting element 42, and the axial dimension of the first limiting element 48 is smaller than the height of the lifting element 42.

[0150] The dimensions of the first limiting element 48 are matched with the dimensions of the first sliding element 46. Generally, the radial dimension of the first limiting element 48 is larger than the radial dimension of the first sliding element 46, and the axial dimension of the first limiting element 48 is larger than the axial dimension of the first sliding element 46.

[0151] The number of first limiting elements 48 matches the number of first sliding elements 46. Generally, the number of first limiting elements 48 is equal to the number of first sliding elements 46.

[0152] In some embodiments, there are multiple first limiting elements 48. The multiple first limiting elements 48 are distributed along the length direction of the lifting element 42.

[0153] In some embodiments, a first limiting element 48 is provided on one side of the lifting element 42 and a first limiting element 48 is provided on the other side of the lifting element 42.

[0154] In some of these embodiments, the first limiting element 48 is a limiting hole.

[0155] The cross-section of the second limiting element 49 is circular.

[0156] The dimensions of the second limiting element 49 are matched with the dimensions of the second sliding element 47. Generally, the radial dimension of the second limiting element 49 is larger than the radial dimension of the second sliding element 47, and the axial dimension of the second limiting element 49 is smaller than the axial dimension of the second sliding element 47.

[0157] The dimensions of the second limiting element 49 are matched with the dimensions of the first limiting element 48. Generally, the radial dimension of the second limiting element 49 is equal to the radial dimension of the first limiting element 48, and the axial dimension of the second limiting element 49 is smaller than the axial dimension of the first limiting element 48.

[0158] The number of second limiting elements 49 matches the number of first limiting elements 48. Generally, the number of second limiting elements 49 is equal to the number of first limiting elements 48.

[0159] In some embodiments, there are multiple second limiting elements 49. The multiple second limiting elements 49 are distributed along the length direction of the first support element 41.

[0160] In some embodiments, a second limiting element 49 is provided on one side of the first support element 41 and a second limiting element 49 is provided on the other side of the first support element 41.

[0161] In some embodiments, the second limiting element 49 is fixedly connected to the second sliding element 47, including but not limited to integral molding.

[0162] In some of these embodiments, the second limiting element 49 is a limiting rod.

[0163] Furthermore, the lifting drive unit 40 also includes a second support element 410. The second support element 410 is disposed at the top of the first support element 41, and a drive element 45 is disposed at the top of the second support element 410, and is connected to the first support element 41 and the drive element 45 respectively.

[0164] In some embodiments, the second support element 410 has an L-shaped cross-section. Specifically, the second support element 410 includes a vertical plate, a horizontal plate, and a through hole. The vertical plate is disposed at the top of the first support element 41 and connected to the first support element 41; the horizontal plate is disposed at the top of the vertical plate, and a driving element 45 is disposed at the top of the horizontal plate and connected to both the vertical plate and the driving element 45; the through hole extends through the horizontal plate for the output end of the driving element 45 to pass through.

[0165] In some of these embodiments, the horizontal plate is arranged perpendicular to the vertical plate.

[0166] The dimensions of the vertical plate match the dimensions of the first support element 41. Generally, the length of the vertical plate is not greater than the width of the first support element 41, the width of the vertical plate is less than the length of the first support element 41, and the height of the vertical plate is greater than the height of the first support element 41.

[0167] The dimensions of the horizontal plate match the dimensions of the first support element 41. Generally, the length of the horizontal plate is less than the length of the first support element 41, the width of the horizontal plate is not greater than the width of the first support element 41, and the height of the horizontal plate is less than the height of the first support element 41.

[0168] The dimensions of the horizontal board match the dimensions of the vertical board. Generally, the length of the horizontal board is greater than the width of the vertical board, the width of the horizontal board is equal to the width of the vertical board, and the height of the horizontal board is less than the height of the vertical board.

[0169] The dimensions of the through hole are matched with the dimensions of the horizontal plate. Generally, the radial dimension of the through hole is smaller than the length and width of the horizontal plate, and the axial dimension of the through hole is equal to the height of the horizontal plate.

[0170] In some embodiments, the second support element 410 is fixedly connected to the first support element 41 and the drive element 45, respectively, including but not limited to bolt connections.

[0171] In some of these embodiments, the second support element 410 is made of metal.

[0172] The method of using this utility model is as follows:

[0173] (I) Assembly Operation

[0174] Place the main component 11 in the designated position;

[0175] The lifting drive unit 40 is placed in the cavity element 13 so that the bottom end of the first support element 41 fits against the bottom end inside the cavity element 13 and is fixed by bolt connection.

[0176] Place the backrest element 31 at the top of the main body element 11 so that the bottom end of the backrest element 31 fits against the top end of the lifting element 42 and is fixed by bolt connection.

[0177] The handrail element 21 is placed on the side of the main body element 11, and the second snap-fit ​​element 22 is snapped into the first snap-fit ​​element 14.

[0178] (II) Adjustment Operation

[0179] The drive element 45 is activated, causing the second rotating element 44 to rotate circumferentially along the first rotating element 43. The second rotating element 44 then drives the lifting element 42 to move axially along the second sliding element 47. The lifting element 42 then drives the backrest element 31 to move accordingly, thereby adjusting the height of the backrest element 31.

[0180] The advantages of this utility model are:

[0181] 1. The main body unit and armrest unit are connected by a snap-fit ​​mechanism, with at least one armrest unit providing multiple options. Users can freely choose to install or remove the armrests according to their actual needs. For example, in confined spaces, the armrests can be removed to save space; when additional support is needed, the armrests can be installed for safety. This flexible installation method meets diverse usage needs and breaks the limitations of traditional fixed seat structures. The backrest unit and lifting drive unit work together to move the backrest unit up and down. Users can flexibly adjust the backrest height according to their height, posture habits, and different usage scenarios (such as dining, reading, and resting), ensuring a perfect fit between the backrest and the user's back, providing more comfortable and effective support, reducing fatigue from prolonged sitting, and improving comfort and flexibility.

[0182] 2. The relatively independent structure of each unit facilitates targeted repair and replacement in case of malfunction or damage. For example, if the armrest unit is damaged, it can be replaced individually without requiring extensive repairs to the entire seating area, thus reducing maintenance difficulty and costs and extending the service life of the seating area.

[0183] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel card holder structure, characterized by, include: The main body unit is disposed on a horizontal plane; At least one handrail unit is removably disposed on the side of the main body unit; A backrest unit, which is removably disposed at the top of the main body unit; A lifting drive unit is removably disposed inside the main body unit and detachably connected to the bottom end of the backrest unit, for driving the backrest unit to reciprocate in the vertical direction.

2. The novel card seat structure according to claim 1, wherein The main body unit includes: The main body element is disposed on a horizontal plane, the armrest unit is disposed on the side of the main body element, and the backrest unit is disposed on the top of the main body element; A first cushion element is removably disposed at the top of the main body element; A cavity element is disposed at the top of the main body element, and the lifting drive unit is disposed on the inner side of the cavity element.

3. The novel card seat structure according to claim 2, wherein The main body unit also includes: At least one first snap-fit ​​element is disposed on the side of the main body element and is detachably connected to the handrail unit to restrict the movement of the handrail unit.

4. The novel card seat structure according to claim 1, wherein The armrest unit includes: Handrail element, which is removably disposed on the side of the main body unit.

5. The novel card seat structure according to claim 4, wherein The armrest unit also includes: The second snap-fit ​​element is disposed on the side of the armrest element and is detachably connected to the main body unit to restrict the movement of the armrest element.

6. The novel card seat structure according to claim 1, wherein The backrest unit includes: A backrest element is removably disposed at the top of the main body unit and connected to the lifting drive unit for reciprocating motion in the vertical direction under the action of the lifting drive unit. A second cushion element is removably disposed at the end of the backrest element.

7. The novel card seat structure according to claim 1, wherein The lifting drive unit includes: A first support element is removably disposed inside the main body unit; A lifting element is movably disposed inside the main body unit. The top of the lifting element is provided with the backrest unit and is located at the top of the first support element, for driving the backrest unit to reciprocate in the vertical direction. A first rotating element is disposed at the bottom end of the lifting element; The second rotating element is disposed at the top of the first support element and is rotatably connected to the first support element and the first rotating element respectively, and is used to drive the lifting element to reciprocate in the vertical direction; A driving element is disposed between the first support element and the lifting element, and is connected to the second rotating element for driving the second rotating element to rotate circumferentially along the first rotating element.

8. The novel card seat structure according to claim 7, wherein The lifting drive unit also includes: At least one first sliding element is disposed at the bottom end of the lifting element; At least one second sliding element is disposed at the top of the first support element and slidably connected to the first sliding element, for causing the lifting element to reciprocate along the axial direction of the second sliding element.

9. The novel card seat structure according to claim 8, wherein The lifting drive unit also includes: At least one first limiting element is disposed inside the first sliding element; At least one second limiting element is provided, which is disposed at the top end of the second sliding element and is limitedly connected to the first limiting element, and is used to cooperate with the first limiting element to limit the movement range of the lifting element.

10. The novel card seat structure according to claim 8, wherein The lifting drive unit also includes: A second support element is disposed at the top of the first support element, and the top of the second support element is provided with the driving element, and is respectively connected to the first support element and the driving element.

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