Seat cover lifting structure

Abstract

The utility model relates to the technical field of seat, specifically a seat sleeve lifting structure, including the fixed frame, a plurality of sleeve are fixedly installed on the fixed frame, the inner rod is movably connected in the sleeve, the inner rod is fixed at the seat bottom, the fixed frame is rotatably installed with the two -way screw rod, two threaded sleeves are threadedly connected on the two -way screw rod, the movable frame is fixedly installed on the threaded sleeve, the movable frame top is fixedly installed with the jack pin, the inner rod is provided with the card slot, the jack pin is movably connected in the card slot, the utility model discloses the fixing of inner rod is driven to the motor, and the convenient adjustment is arranged, and the movement of movable frame relies on the threaded connection of threaded sleeve and two -way screw rod, after the jack pin is inserted into the card slot, the self -locking performance of threaded connection is used to guarantee the position fixation after the jack pin installation, and it is not easy to loosen, guarantees the stability after the inner rod fixation, makes the seat adjustment not appear accidental unlocking risk.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically a seat sleeve lifting structure. Background Technology

[0002] The height adjustability of a seat is crucial for ergonomics, comfort, and adaptability to different users and work scenarios. The sleeve-type lifting structure has become one of the most mainstream technical solutions for seat height adjustment mechanisms due to its relatively simple structure, controllable manufacturing costs, good load-bearing capacity, and ease of stepless adjustment. Its basic principle typically includes an outer tube (fixed tube) fixed to the seat base or support leg and an inner tube (lifting tube) fixed under the seat cushion. The two tubes achieve axial sliding through a precise clearance fit.

[0003] Existing seat sleeve lifting structures, such as many mechanical structures (e.g. threaded type, partial locking type), are not convenient and quick to adjust, often requiring operation outside the seat. In addition, after long-term use, wear and tear can lead to increased gaps, causing shaking, abnormal noise, or even accidental slippage. Furthermore, locking type structures pose a risk of accidental unlocking. Therefore, we provide a seat sleeve lifting structure to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a seat sleeve lifting structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A seat sleeve lifting structure includes a fixed frame, on which multiple sleeves are fixedly installed. An inner rod is movably engaged inside each sleeve and fixed to the bottom of the seat. A double-acting screw is rotatably installed on the fixed frame. Two threaded sleeves are threadedly connected to the double-acting screw. A movable frame is fixedly installed on the threaded sleeves. A locking pin is fixedly installed at the top of the movable frame. A locking groove is formed on the inner rod, and the locking pin is movably engaged inside the locking groove.

[0007] As described above, a seat sleeve lifting structure is provided: the inner diameter of the sleeve is adapted to the outer diameter of the inner rod, and the number of sleeves is set to multiple, with the multiple sleeves distributed at equal intervals from top to bottom on the fixed frame.

[0008] As described above, a seat sleeve lifting structure consists of two sections of screws with opposite thread directions.

[0009] As described above, a seat sleeve lifting structure is provided: one end of the bidirectional lead screw is rotatably connected to the fixed frame via a bearing, and the other end is installed at the output end of the motor and driven to rotate by the motor. The motor is fixedly installed on the fixed frame.

[0010] As described above, a seat sleeve lifting structure has a through groove on the fixed frame that matches the outer dimensions of the movable frame, and the movable frame passes through the through groove.

[0011] As described above, a seat sleeve lifting structure has the inner surface dimensions of the slots matching the outer surface dimensions of the pins, and the number of slots is set to multiple, with the slots evenly distributed on the inner rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the inner rod is fixed to the bottom of the seat. When adjusting the height of the seat, the height of the seat on the inner rod can be adjusted simply by sliding the inner rod up and down inside the sleeve fixed on the fixed frame. After adjusting to the appropriate angle, the motor is started to drive the double-acting screw to rotate. The threaded sleeve is connected to the double-acting screw to drive the threaded sleeve to move, thereby driving the two movable frames to move relative to each other and then driving the locking pin to move into the slot at the beginning of the inner rod, locking the inner rod and completing the fixing function of the seat on the inner rod after the height adjustment.

[0013] Therefore, this utility model uses a motor to drive the inner rod to fix it, which is convenient to adjust. The movement of the movable frame relies on the threaded connection between the threaded sleeve and the double-ended screw. After the locking pin is inserted into the slot, the self-locking performance of the threaded connection ensures that the position of the locking pin is fixed after installation, which is not easy to loosen. This ensures the stability of the inner rod after it is fixed, so that there is no risk of accidental unlocking after the seat is adjusted. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a seat sleeve lifting structure.

[0015] Figure 2 This is a schematic diagram of the overall structure of a seat sleeve lifting structure.

[0016] Figure 3 A type of seat sleeve lifting structure Figure 2 A magnified schematic diagram of the central part of the structure.

[0017] In the diagram: 1. Fixed frame; 2. Sleeve; 3. Inner rod; 4. Double-acting screw; 5. Bearing; 6. Motor; 7. Threaded sleeve; 8. Movable frame; 9. Locking pin; 10. Locking groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-3As an embodiment of this utility model, a seat sleeve lifting structure includes a fixed frame 1, on which multiple sleeves 2 are fixedly installed. An inner rod 3 is movably engaged inside the sleeve 2 and fixed to the bottom of the seat. A two-way screw 4 is rotatably installed on the fixed frame 1. Two threaded sleeves 7 are threadedly connected to the two-way screw 4. A movable frame 8 is fixedly installed on the threaded sleeve 7. A locking pin 9 is fixedly installed at the top of the movable frame 8. A locking groove 10 is opened on the inner rod 3, and the locking pin 9 is movably engaged inside the locking groove 10.

[0020] In this embodiment, during use, the inner rod 3 is fixed to the bottom of the seat. When adjusting the height of the seat, the inner rod 3 can be adjusted by sliding up and down inside the sleeve 2 fixed on the fixing frame 1. After adjusting to a suitable angle, the double-acting screw 4 is driven to rotate. The threaded sleeve 7 is threadedly connected to the double-acting screw 4, which drives the threaded sleeve 7 to move. This causes the two movable frames 8 to move relative to each other, thereby causing the locking pin 9 to be inserted into the slot 10 at the beginning of the inner rod 3, locking the inner rod 3 and completing the fixing function of the seat after the height adjustment on the inner rod 3.

[0021] As a further embodiment of this utility model, the inner diameter of the sleeve 2 is adapted to the outer diameter of the inner rod 3, and the number of sleeves 2 is set to multiple, with multiple sleeves 2 distributed at equal intervals from top to bottom on the fixing frame 1.

[0022] In this embodiment, the inner rod 3 is movably engaged inside the sleeve 2, and the sleeve 2 limits the movement of the inner rod 3.

[0023] As a further embodiment of this invention, the bidirectional lead screw 4 is composed of two sections of lead screw with opposite thread directions.

[0024] In this embodiment, the bidirectional lead screw 4 consists of two lead screws with opposite thread directions. The bidirectional lead screw 4 is threadedly connected to the threaded sleeve 7. When the bidirectional lead screw 4 rotates, it can synchronously drive the two threaded sleeves 7 to move relative to each other.

[0025] As a further embodiment of this utility model, one end of the bidirectional lead screw 4 is rotatably connected to the fixed frame 1 via a bearing 5, and the other end is installed at the output end of the motor 6 and driven to rotate by the motor 6. The motor 6 is fixedly installed on the fixed frame 1.

[0026] In this embodiment, the motor 6 is electrically connected to an external power source via a wire, and starting the motor 6 drives the bidirectional lead screw 4 to rotate.

[0027] As a further embodiment of this utility model, the fixed frame 1 is provided with a through groove that matches the outer dimensions of the movable frame 8, and the movable frame 8 passes through the through groove.

[0028] In this embodiment, the through slot of the movable frame 8 ensures that the movable frame 8 can move horizontally inside the fixed frame 1.

[0029] As a further embodiment of this utility model, the inner surface dimensions of the slot 10 are adapted to the outer surface dimensions of the pin 9, and the number of slots 10 is set to multiple, with the slots 10 evenly distributed on the inner rod 3.

[0030] In this embodiment, the inner rod 3 is adjusted in height by means of the slots 10 evenly distributed on the inner rod 3 and the engagement position of the pins 9 with the slots 10.

[0031] The working principle of this utility model is as follows: When in use, the inner rod 3 is fixed to the bottom of the seat. When adjusting the height of the seat, the inner rod 3 can be adjusted by sliding up and down inside the sleeve 2 fixed on the fixed frame 1. When the appropriate angle is reached, the double-acting screw 4 is driven to rotate. The threaded sleeve 7 is threadedly connected to the double-acting screw 4, which drives the threaded sleeve 7 to move. This causes the two movable frames 8 to move relative to each other, which in turn causes the locking pin 9 to be inserted into the slot 10 at the beginning of the inner rod 3, locking the inner rod 3 and completing the fixing function of the seat after the height adjustment on the inner rod 3.

[0032] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A seat sleeve lifting structure, comprising a fixing frame (1), characterized in that, Multiple sleeves (2) are fixedly installed on the fixed frame (1). An inner rod (3) is movably connected inside the sleeve (2). The inner rod (3) is fixed to the bottom of the seat. A two-way screw rod (4) is rotatably installed on the fixed frame (1). Two threaded sleeves (7) are threadedly connected to the two-way screw rod (4). A movable frame (8) is fixedly installed on the threaded sleeve (7). A locking pin (9) is fixedly installed at the top of the movable frame (8). A slot (10) is opened on the inner rod (3). The locking pin (9) is movably engaged inside the slot (10).

2. The seat sleeve lifting structure according to claim 1, characterized in that, The inner diameter of the sleeve (2) is adapted to the outer diameter of the inner rod (3). The number of sleeves (2) is set to multiple, and the multiple sleeves (2) are distributed at equal intervals from top to bottom on the fixing frame (1).

3. The seat sleeve lifting structure according to claim 1, characterized in that, The bidirectional lead screw (4) consists of two sections of lead screw with opposite thread directions.

4. The seat sleeve lifting structure according to claim 1, characterized in that, One end of the bidirectional lead screw (4) is rotatably connected to the fixed frame (1) through a bearing (5), and the other end is installed at the output end of the motor (6) and driven to rotate by the motor (6). The motor (6) is fixedly installed on the fixed frame (1).

5. The seat sleeve lifting structure according to claim 1, characterized in that, The fixed frame (1) has a through slot that matches the outer dimensions of the movable frame (8), and the movable frame (8) passes through the through slot.

6. The seat sleeve lifting structure according to claim 1, characterized in that, The inner surface dimensions of the slot (10) are adapted to the outer surface dimensions of the pin (9). The number of slots (10) is set to multiple, and the slots (10) are evenly distributed on the inner rod (3).

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