High-load office chair

Abstract

The utility model relates to a high-load type office chair which comprises a movable base, two supporting frames are fixedly installed on the top of the movable base, the tops of the two supporting frames are jointly and fixedly connected with a same supporting plate, and one end of the supporting plate is rotationally connected with a turnover plate used for supporting the legs of a user. The top of the movable base is further provided with a transmission mechanism used for driving the overturning plate. The extension end of the electric push rod is controlled to extend to the longest, so that the overturning plate rotates to support the legs of a user, the comfort of the user is improved, and the situation that when the weight of the user is large, the pedal is prone to being broken is prevented; meanwhile, in the extension process of the extension end of an electric push rod, two transmission rods are driven to rotate at the same time through a shifting rod, so that two L-shaped frames rotate, and a limiting plate is matched with a rubber sheet to be in contact with the ground, so that the stability of the movable base is improved, and the user is prevented from toppling when shaking on the office chair.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to a high-load-bearing office chair. Background Art

[0002] Office chairs play an indispensable role in daily office work and are used very frequently in daily work. Therefore, they have high requirements for their own load-bearing capacity. Most existing office chairs use welding to connect the supporting parts. After long-term use, they are prone to desoldering, which poses a major safety hazard. It is necessary to propose a solution to solve the above technical solutions.

[0003] For example, in the prior art with publication number CN218898938U, the connections between the seat cushion and the reinforced connecting rod, the cross support base, and the fixed backrest, armrests, and seat cushion are all installed by bolts, without the need for welding. This makes the connections more stable, thereby making the entire chair have a higher load-bearing capacity, safer to use, and longer service life.

[0004] Existing high-load-bearing office chairs provide support for the user's legs by pulling out the footrests when the user takes a lunch break. When the user is heavy, the footrests may break easily after prolonged use. In addition, while the footrests support the user's legs, the user may easily fall over when rocking on the office chair. Utility Model Content

[0005] The technical problems solved by this solution are:

[0006] (1) How to solve the problem that when the user's weight is large, the footrest is likely to break, and when the footrest provides support for the user's legs, the user is likely to fall over when shaking on the office chair.

[0007] The purpose of the utility model can be achieved by the following technical solution: a high-load office chair, comprising a mobile base, two support frames fixedly mounted on the top of the mobile base, the tops of the two support frames being fixedly connected to a common support plate, one end of the support plate being rotatably connected to a flip plate for supporting the user's legs, and a transmission mechanism for driving the flip plate being further provided on the top of the mobile base;

[0008] The transmission mechanism includes an electric push rod hinged to the top surface of the movable base, the protruding end of the electric push rod is hinged to the middle part of the bottom surface of the flip plate, the protruding end of the electric push rod is also fixedly inserted with a shift rod, and the front and rear sides of the electric push rod are provided with stabilizing units for preventing the support plate from tipping over.

[0009] A further technical improvement of the present invention is that the stabilizing unit includes a positioning frame fixedly connected to the mobile base, a connecting frame is fixedly installed on the top side of the positioning frame, a transmission rod is rotatably provided on the connecting frame, the top of the transmission rod is slidably connected to one end of the shift rod, and the bottom of the transmission rod is rotatably connected to a transmission roller.

[0010] A further technical improvement of the present invention is that the middle part of the positioning frame is rotatably connected to an L-shaped frame, the middle top surface of the L-shaped frame is rollingly connected to the transmission roller, and a limit plate is fixedly installed on one end of the L-shaped frame away from the positioning frame.

[0011] A further technical improvement of the present invention is that a rubber sheet is fixedly provided on the bottom of the limiting plate.

[0012] A further technical improvement of the present invention is that: a tension spring is fixedly connected between the connecting frame and the middle part of the L-shaped frame; by controlling the extended end of the electric push rod to extend to the longest, the flip plate rotates, providing support for the user's legs, improving the user's comfort, and preventing the foot pedal from breaking when the user is heavy; at the same time, during the extension process of the extended end of the electric push rod, the two transmission rods are driven by the dial rod to rotate simultaneously, and the two transmission rollers provide rolling pressure to the corresponding L-shaped frames, so that the two L-shaped frames rotate and contact the ground through the limit plate and the rubber sheet, thereby increasing the stability of the mobile base and preventing the user from tipping over when shaking on the office chair.

[0013] A further technical improvement of the present invention is that a backrest is fixedly provided on the top of the other end of the support plate, and a seat cushion is provided in the middle of the top surface of the support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the utility model is in use, the extended end of the electric push rod is controlled to extend to the longest position, so that the flip plate rotates, providing support for the user's legs, improving the user's comfort, and preventing the foot pedal from breaking when the user is heavy. At the same time, during the extension process, the extended end of the electric push rod drives the two transmission rods to rotate simultaneously through the shift rod, and cooperates with the two transmission rollers to provide rolling pressure to the corresponding L-shaped frames, so that the two L-shaped frames rotate and contact the ground through the limit plate and the rubber sheet, thereby increasing the stability of the mobile base and preventing the user from tipping over when shaking on the office chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the transmission mechanism structure of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the local structure of the transmission mechanism of the utility model.

[0020] In the figure: 1. Backrest; 2. Support plate; 3. Support frame; 4. Mobile base; 5. Universal wheel; 6. Transmission mechanism; 7. Flip plate; 8. Push rod; 61. Positioning frame; 62. L-shaped frame; 63. Transmission rod; 64. Electric push rod; 65. Connecting frame; 66. Tension spring; 67. Limit plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 3 As shown, a high-load office chair includes a mobile base 4, two support frames 3 are fixedly installed on the top of the mobile base 4, the tops of the two support frames 3 are fixedly connected to the same support plate 2, one end of the support plate 2 is rotatably connected to a flip plate 7 for supporting the user's legs, and the top of the mobile base 4 is also provided with a transmission mechanism 6 for driving the flip plate 7.

[0023] See also Figure 1-Figure 3 As shown, the above-mentioned transmission mechanism 6 includes an electric push rod 64 hinged to the top surface of the movable base 4, the protruding end of the electric push rod 64 is hinged to the middle part of the bottom surface of the flip plate 7, and the protruding end of the electric push rod 64 is also fixedly inserted with a shift rod 8, and the front and rear sides of the electric push rod 64 are provided with stabilizing units for preventing the support plate 2 from tipping over.

[0024] See also Figure 1-Figure 3 As shown, the above-mentioned stabilization unit includes a positioning frame 61 fixedly connected to the mobile base 4, and a connecting frame 65 is fixedly installed on the top side of the positioning frame 61. A transmission rod 63 is rotatably provided on the connecting frame 65. The top of the transmission rod 63 is slidably connected to one end of the shift rod 8, and the bottom of the transmission rod 63 is rotatably connected to a transmission roller.

[0025] See also Figure 2 and Figure 3As shown, the middle part of the above-mentioned positioning frame 61 is rotatably connected to the L-shaped frame 62, the middle top surface of the L-shaped frame 62 is rollingly connected to the transmission roller, and the end of the L-shaped frame 62 away from the positioning frame 61 is fixedly installed with a limit plate 67, and the bottom of the limit plate 67 is fixedly provided with a rubber sheet.

[0026] See also Figure 3 As shown, a tension spring 66 is fixedly connected between the above-mentioned connecting frame 65 and the middle part of the L-shaped frame 62; by controlling the extended end of the electric push rod 64 to extend to the longest, the flip plate 7 rotates, providing support for the user's legs, improving the user's comfort, and preventing the foot pedal from breaking when the user's weight is heavy; at the same time, during the extension process of the extended end of the electric push rod 64, the two transmission rods 63 are driven to rotate simultaneously through the dial rod 8, and the two transmission rollers provide rolling pressure to the corresponding L-shaped frames 62, so that the two L-shaped frames 62 rotate, and contact the ground through the limit plate 67 and the rubber sheet, thereby increasing the stability of the mobile base 4 and preventing the user from tipping over when shaking on the office chair.

[0027] See also Figure 1 As shown, a backrest 1 is fixedly provided on the top of the other end of the support plate 2, and a seat cushion is provided in the middle of the top surface of the support plate 2.

[0028] See also Figure 1 As shown, universal wheels 5 are provided at the four corners of the bottom of the mobile base 4 .

[0029] Working principle: When the present invention is in use, first, the user sits on the cushion of the support plate 2 so that the user's back contacts the backrest 1, and by controlling the extended end of the electric push rod 64 to extend to the longest, the flip plate 7 rotates, providing support for the user's legs, improving the user's comfort, and preventing the foot pedal from breaking when the user's weight is large; at the same time, during the extension process, the extended end of the electric push rod 64 drives the two transmission rods 63 to rotate simultaneously through the dial rod 8, and cooperates with the two transmission rollers to provide rolling pressure to the corresponding L-shaped frames 62, so that the two L-shaped frames 62 rotate and contact the ground through the limit plate 67 and the rubber sheet, thereby increasing the stability of the mobile base 4 and preventing the user from falling when shaking on the office chair; after the extended end of the electric push rod 64 is controlled to retract and reset, the limit plate 67 and the rubber sheet are separated from the ground by the tension of the tension spring (66), which facilitates manual adjustment of the position of the mobile base (4).

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-load office chair, comprising a mobile base (4), two support frames (3) fixedly mounted on the top of the mobile base (4), the tops of the two support frames (3) being fixedly connected to a common support plate (2), characterized in that: One end of the support plate (2) is rotatably connected to a flip plate (7) for supporting the user's legs, and a transmission mechanism (6) for driving the flip plate (7) is also provided on the top of the movable base (4); The transmission mechanism (6) includes an electric push rod (64) hinged to the top surface of the movable base (4), the extended end of the electric push rod (64) is hinged to the middle part of the bottom surface of the flip plate (7), the extended end of the electric push rod (64) is also fixedly inserted with a shift rod (8), and the front and rear sides of the electric push rod (64) are both provided with stabilizing units for preventing the support plate (2) from tipping over.

2. A high-load office chair according to claim 1, characterized in that: The stabilizing unit comprises a positioning frame (61) fixedly connected to the mobile base (4); a connecting frame (65) is fixedly installed on the top side of the positioning frame (61); a transmission rod (63) is rotatably provided on the connecting frame (65); the top of the transmission rod (63) is slidably connected to one end of the shifting rod (8), and the bottom of the transmission rod (63) is rotatably connected to a transmission roller.

3. A high-load office chair according to claim 2, characterized in that: The middle of the positioning frame (61) is rotatably connected to an L-shaped frame (62), the middle of the L-shaped frame (62) is rollingly connected to a transmission roller, and a limiting plate (67) is fixedly installed on one end of the L-shaped frame (62) away from the positioning frame (61).

4. The high-load-carrying office chair according to claim 3, characterized in that: A rubber sheet is fixedly provided on the bottom of the limiting plate (67).

5. The high-load office chair according to claim 2, characterized in that: A tension spring (66) is fixedly connected between the connecting frame (65) and the middle portion of the L-shaped frame (62).

6. The high-load-carrying office chair according to claim 1, characterized in that: A backrest (1) is fixedly provided on the top of the other end of the support plate (2), and a seat cushion is provided in the middle of the top surface of the support plate (2).

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