Seat with stable chassis

Abstract

The utility model provides a seat with a stable chassis, and relates to the technical field of seats. Comprising a chair seat, a telescopic rod, chair legs and chair wheels, a stable chassis is arranged under the telescopic rod, and the stable chassis comprises a balance weight disc, a lifting assembly arranged between the balance weight disc and the chair legs and a driving assembly arranged between the telescopic rod and the balance weight disc; the lifting assembly comprises a rotating disc rotationally arranged in the center of the balance weight disc, sliding blocks arranged on the balance weight disc in a sliding mode, first connecting rods hinged between the sliding blocks and the rotating disc and second connecting rods hinged between the chair legs and the sliding blocks, the positions and the number of the sliding blocks correspond to those of the chair legs, and guide grooves matched with the sliding blocks are formed in the balance weight disc; the guide grooves are formed in the radial direction of the rotary disc, and the driving assembly is used for driving the rotary disc to rotate. The office chair solves the problem that an existing office chair is poor in stability due to the fact that the existing office chair is only supported by chair wheels.

Description

Technical Field

[0001] The utility model provides a seat with a stable chassis, and relates to the technical field of seats. Background Art

[0002] "Chair" is a kind of daily furniture, a kind of seat with backrest and armrests. Chairs can be divided into solid wood chairs, glass chairs, iron chairs, plastic chairs, fabric chairs, leather chairs, foam chairs, etc. by material. They can be divided into office chairs, dining chairs, bar chairs, leisure chairs, reclining chairs, special chairs, children's chairs, etc. by use. Among them, the bottom of the office chair is often equipped with octopus-shaped chair feet, and the ends of the chair feet are equipped with chair wheels.

[0003] Existing office chairs usually use universal wheels for chair wheels. Since there are only a few wheels supporting the bottom, their stability is poor. Although some chairs use universal wheels with locks, due to the small number of support points, when the user shakes left and right or leans back, the chair is still prone to tipping over. For this reason, we propose a chair with a stable chassis. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing office chair is only supported by chair wheels, resulting in poor stability.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a chair with a stable chassis, including a seat, a telescopic rod, chair feet and chair wheels, a stable chassis is arranged directly below the telescopic rod, the stable chassis includes a counterweight plate, a lifting assembly arranged between the counterweight plate and the chair feet, and a driving assembly arranged between the telescopic rod and the counterweight plate, the lifting assembly includes a turntable rotatably arranged at the center of the counterweight plate, a slider slidably placed on the counterweight plate, a connecting rod one hinged between the slider and the turntable, and a connecting rod two hinged between the chair feet and the slider, the position and number of the sliders correspond to the chair feet, the counterweight plate is provided with a guide groove matching the slider, the guide groove is arranged along the radial direction of the turntable, and the driving assembly is used to drive the turntable to rotate.

[0006] Preferably, the driving assembly includes a driving motor fixedly connected to the bottom end of the telescopic rod, a transmission shaft coaxially fixedly connected to the output shaft of the driving motor, and a sleeve fixedly connected to the turntable, the side wall of the transmission shaft is circumferentially fixed with a convex ridge, and the transmission shaft is slidably connected to the sleeve.

[0007] Preferably, the cross section of the slider is I-shaped, and the shape of the guide groove matches that of the slider.

[0008] Preferably, the drive motor is a brake motor.

[0009] Preferably, a mounting groove matching with the turntable is opened at the center of the counterweight disc, and the turntable is rotatably connected to the inner side of the mounting groove through a bearing.

[0010] Preferably, a rubber anti-skid pad is fixedly connected to the bottom of the counterweight plate.

[0011] Beneficial effects of the utility model:

[0012] By setting up a stable chassis, when the seat needs to be placed stably, the driving assembly can drive the lifting assembly to operate, and the lifting assembly can drive the counterweight plate down to the ground to increase the contact area between the seat and the ground, thereby achieving the effect of stabilizing the seat and making it less likely to shake and tip over. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a seat with a stable chassis.

[0014] Figure 2 The utility model is a schematic diagram of a stable chassis structure of a seat with a stable chassis.

[0015] Figure 3 This is a disassembled diagram of the stable structure of a seat with a stable chassis according to the utility model.

[0016] Figure 4 This is an enlarged view of point A of a seat with a stable chassis according to the present invention.

[0017] Figure 5 The utility model is a schematic diagram of a transmission shaft and a shaft sleeve structure of a seat with a stable chassis.

[0018] (1. Seat; 2. Telescopic rod; 3. Chair feet; 4. Chair wheels; 5. Counterweight plate; 6. Guide groove; 7. Connecting rod 1; 8. Connecting rod 2; 9. Turntable; 10. Drive motor; 11. Transmission shaft; 12. Bushing; 13. Mounting groove; 14. Sliding block; 15. Raised ridge) DETAILED DESCRIPTION

[0019] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0020] Reference Figures 1 to 5 The utility model provides a chair with a stable chassis, including a seat 1, a telescopic rod 2, a chair leg 3 and a chair wheel 4. The seat 1, the telescopic rod 2, the chair leg 3 and the chair wheel 4 all adopt the existing technology, so they are not described in detail.

[0021] Furthermore, if Figure 2As shown, a stable chassis is arranged directly below the telescopic rod 2 in the utility model, and the stable chassis includes a counterweight plate 5, a lifting assembly arranged between the counterweight plate 5 and the chair leg 3, and a driving assembly arranged between the telescopic rod 2 and the counterweight plate 5. Specifically, the lifting assembly is used to drive the counterweight plate 5 to be lifted and lowered. When the counterweight plate 5 is lowered to the ground, the stability of the seat is increased by the counterweight plate 5. When the seat needs to be moved, the counterweight plate 5 can be lifted by the lifting assembly, and the driving assembly is used to drive the lifting assembly to operate.

[0022] Furthermore, if Figure 2 , Figure 3 , Figure 4 As shown, the lifting assembly in the utility model includes a turntable 9 rotatably arranged at the center of the counterweight plate 5, a slider 14 slidably placed on the counterweight plate 5 and having an I-shaped cross-section, a connecting rod 7 hinged between the slider 14 and the turntable 9, and a connecting rod 2 8 hinged between the chair leg 3 and the slider 14. The center of the counterweight plate 5 is provided with a mounting groove 13 that matches the turntable 9. The turntable 9 is rotatably connected to the inner side of the mounting groove 13 through a bearing. The position and number of the sliders 14 correspond to the chair leg 3. The counterweight plate 5 is provided with guide grooves 6 that match the sliders 14. The guide grooves 6 are radially arranged along the turntable 9. Specifically, the guide grooves 6 are provided along the radial direction of the turntable 9. The groove 6 limits and guides the slider 14, so that the slider 14 can only move along the length direction of the guide groove 6. At the same time, by setting the cross-section of the slider 14 to an I-shape, the shape of the guide groove 6 matches the slider 14, so that the slider 14 can only slide in the guide groove 6 and cannot escape from the guide groove 6, thereby connecting the counterweight plate 5 to the lifting assembly. When the turntable 9 rotates, the turntable 9 drives the slider 14 to slide in the guide groove 6 through the connecting rod 1 7. When the slider 14 moves toward the direction close to the turntable 9, the slider 14 drives the connecting rod 2 8 to swing toward the turntable 9, thereby driving the counterweight plate 5 to move up, and vice versa.

[0023] Furthermore, if Figure 3 , Figure 5 As shown, the driving assembly in the utility model is used to drive the turntable 9 to rotate, and the driving assembly includes a driving motor 10 fixedly connected to the bottom end of the telescopic rod 2, a transmission shaft 11 coaxially fixedly connected to the output shaft of the driving motor 10, and a sleeve 12 fixedly connected to the turntable 9. The side wall of the transmission shaft 11 is fixedly connected with a convex rib 15 around the circumference, and the transmission shaft 11 is slidably connected to the sleeve 12. Specifically, through the arrangement of the convex rib 15, the transmission shaft 11 can drive the sleeve 12 to rotate, thereby driving the turntable 9 to rotate, and the transmission shaft 11 can also slide inside the sleeve 12, so that when the counterweight plate 5 is raised or lowered, there will be no movement obstruction.

[0024] Furthermore, the drive motor 10 in the utility model adopts a brake motor. The brake motor is a motor provided with an electromagnetic brake. When the motor is powered on, the electromagnetic brake is also powered on and attracted. At this time, it does not brake the motor. When the motor is powered off, it also powers off and brakes the motor, so that the motor has a self-locking function, thereby making the structure of the stable chassis more stable and reliable.

[0025] Furthermore, a rubber anti-skid pad is fixedly connected to the bottom of the counterweight plate 5 in the utility model. Specifically, the rubber anti-skid pad can increase the friction between the counterweight plate 5 and the ground, thereby improving the stabilization effect.

[0026] Working principle: Start the drive motor 10 to drive the turntable 9 to rotate. The turntable 9 drives the slider 14 to slide in the guide groove 6 through the connecting rod 1 7. When the slider 14 moves in the direction away from the turntable 9, the slider 14 drives the connecting rod 2 8 to swing downward, thereby driving the counterweight plate 5 to move downward, and lowering the counterweight plate 5 to the ground, thereby increasing the supporting area between the seat and the ground, thereby improving the stability of the seat and preventing the seat from shaking and tipping over. When the seat needs to be moved, start the drive motor 10 again to reverse it, which can drive the counterweight plate 5 to move upward.

[0027] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A chair with a stable chassis, comprising a seat, a telescopic rod, a chair foot and chair wheels, characterized in that: A stable chassis is arranged directly below the telescopic rod, and the stable chassis includes a counterweight plate, a lifting assembly arranged between the counterweight plate and the chair foot, and a driving assembly arranged between the telescopic rod and the counterweight plate. The lifting assembly includes a turntable rotatably arranged at the center of the counterweight plate, a slider slidably placed on the counterweight plate, a connecting rod 1 hinged between the slider and the turntable, and a connecting rod 2 hinged between the chair foot and the slider. The positions and number of the sliders correspond to the chair feet. The counterweight plate is provided with a guide groove that matches the slider. The guide groove is arranged along the radial direction of the turntable. The driving assembly is used to drive the turntable to rotate.

2. A seat with a stable chassis according to claim 1, characterized in that: The driving assembly includes a driving motor fixedly connected to the bottom end of the telescopic rod, a transmission shaft coaxially fixedly connected to the output shaft of the driving motor, and a sleeve fixedly connected to the turntable. The side wall of the transmission shaft is fixedly connected with a convex ridge around the circumference, and the transmission shaft is slidably connected to the sleeve.

3. A seat with a stable chassis according to claim 1, characterized in that: The cross section of the sliding block is an I-shape, and the shape of the guide groove matches the sliding block.

4. A seat with a stable chassis according to claim 2, characterized in that: The driving motor is a brake motor.

5. A seat with a stable chassis according to claim 1, characterized in that: A mounting groove matched with the rotating disk is provided at the center of the counterweight disk, and the rotating disk is rotatably connected to the inner side of the mounting groove through a bearing.

6. A seat with a stable chassis according to claim 1, characterized in that: A rubber anti-skid pad is fixedly connected to the bottom of the counterweight plate.

Images