Seat armrest anti-loosening structure

Abstract

The utility model relates to the related technical field of seats, in particular to an anti-loosening structure of a seat armrest, which comprises a seat leg, wherein a seat wheel is arranged at the bottom of the seat leg; the T-shaped handrail is clamped on the outer wall of the anti-skidding plane groove of the D-shaped plane structure through the gasket hole of the D-shaped structure, the gasket hole and the anti-skidding plane groove are matched to play a role in fixing and locking, then the T-shaped handrail is fixed only by screwing the locknut, and when the T-shaped handrail is turned backwards, the fastening bolt is fixed, so that the T-shaped handrail is prevented from being loosened. The gasket body of the D-shaped structure is in contact with the anti-skid plane groove in the surface of the fastening bolt for limiting, and does not rotate, so that a good anti-loosening effect is achieved; data are generated through the temperature sensor according to the environment temperature, when the temperature is higher than a set temperature value, the ventilation fan generates airflow to conduct ventilation and heat dissipation on the chair seat for cooling, otherwise, when the temperature is lower than the set temperature value, the electric heating wire heats the airflow of the ventilation fan, then hot air is blown to the chair seat for heating, and the practicability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field related to seats, and in particular relates to a seat armrest anti-loosening structure. Background Art

[0002] A chair is a piece of furniture with a backrest and sometimes armrests. The armrests on current chairs often use circular washers. When the armrest is flipped up during use, this design causes the washers to rotate, which in turn causes the nuts to rotate and loosen. Over time, this rotational mechanism causes the armrest's backward tilt to gradually become loose, affecting the chair's stability and service life.

[0003] In addition, existing seats cause obvious seasonal discomfort during daily use: in the hot summer, the seat cushions often lack breathability due to material and design issues, making it feel stuffy and uncomfortable to sit on them; and in the cold winter, the seat cushions cannot provide sufficient thermal insulation, and sitting for a long time will feel cold, which greatly reduces the physical comfort.

[0004] Therefore, a seat armrest anti-loosening structure is needed to improve the above-mentioned problem. Utility Model Content

[0005] In order to solve the problem that when the armrest of the chair is rotated, the gasket rotates accordingly, thereby causing the nut to rotate and loosen, the utility model provides a chair armrest anti-loosening structure to solve the above problem.

[0006] In order to solve the above technical problems, the present invention provides a chair armrest anti-loosening structure, comprising a chair foot:

[0007] The bottom of the chair leg is provided with a chair wheel, the outer wall of the chair leg is provided with a gas pressure rod, one end of the gas pressure rod is provided with a lifter, the outer wall of the lifter is provided with a chair seat, the outer wall of the chair seat is provided with a T-shaped armrest, and the outer wall of the chair seat is provided with a chair back;

[0008] Anti-loosening connection components for T-shaped handrails;

[0009] The anti-loosening connection assembly includes a mounting seat, which is installed on the bottom of the seat, and a positioning pin is installed on the outer wall of the mounting seat. A mounting hole is provided on the outer wall of the mounting seat, and a fastening bolt is installed on the inner wall of the mounting hole. A D-shaped anti-slip plane groove is provided on the outer wall of the fastening bolt, and a gasket body is installed on the outer wall of the fastening bolt. A gasket hole is provided on the outer wall of the gasket body, and the gasket hole is a D-shaped structure. The gasket hole and the anti-slip plane groove cooperate to play a fixing role. A T-shaped handrail is provided on one side of the gasket body and on the outer wall of the fastening bolt, and the T-shaped handrail and the mounting seat are plugged and unplugged for fixation, and an anti-loosening nut is threadedly connected on the other side of the gasket body and on the outer wall of the fastening bolt.

[0010] As a preferred solution of the present invention, it also includes a constant temperature component, which includes a fixed shell, a temperature sensor, a pressure sensor and a controller. The fixed shell is installed at the bottom of the seat, and the fixed shell is located on one side of the lifter. A heating wire is installed on the inner wall of the fixed shell, and a ventilation fan is embedded in the outer wall of the fixed shell. The pressure sensor is arranged on the inner wall of the seat, the temperature sensor is installed on the inner wall of the seat, and the controller is arranged on the outer wall of the fixed shell.

[0011] As a preferred solution of the present invention, a cap is installed on one side of the anti-loosening nut and on the outer wall of the T-shaped handrail.

[0012] As a preferred solution of the present invention, the controller is connected to a pressure sensor, a heating wire, a temperature sensor and a ventilation fan through wires, and the connection method is electrical connection. The chair wheels are provided in multiple groups and are respectively located at the bottom corners of the chair legs.

[0013] As a preferred solution of the present invention, the T-shaped armrests are provided in two groups and are respectively located on the opposite outer walls of the seat, the mounting seats are provided in two groups and are respectively located on the outer walls of the seat, and the positioning pins are provided in two groups and are respectively located on the outer walls of the mounting seats.

[0014] As a preferred solution of the present invention, the positioning pin is located on one side of the fastening bolt, and the positioning pin plays a guiding and fixing role for the T-shaped handrail, and the connection mode of the gasket body and the fastening bolt is a sliding connection.

[0015] As a preferred solution of the present invention, the anti-slip plane groove and the gasket body are both located in the inner cavity of the T-shaped armrest, the anti-loosening nut is located in the inner cavity of the T-shaped armrest, the fixed shell is provided in two groups and is respectively located at the bottom of the seat, and the fixed shell is located on one side of the mounting seat.

[0016] As a preferred solution of the present invention, the heating wire is located between the ventilation fan and the seat, and the bottom of the seat is a sieve-shaped structure. The ventilation fans are provided in multiple groups and are respectively located on the outer wall of the fixed shell.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0018] The D-shaped washer is fixed on the outer wall of the fastening bolt so that the D-shaped washer hole is stuck on the outer wall of the anti-skid flat groove of the D-shaped flat structure. The washer hole and the anti-skid flat groove cooperate to play a role of fixing and preventing loosening. Then, it is only necessary to tighten the anti-loosening nut to fix the T-shaped armrest. When the T-shaped armrest is flipped back, the fastening bolt is fixed and the D-shaped washer body is contacted and limited by the anti-skid flat groove on the surface of the fastening bolt and will not rotate, thereby playing a good anti-loosening role. Thereby solving the problem that when the armrest is flipped up, this design will cause the washer to rotate, which will cause the nut to rotate and loosen. Over time, this rotation mechanism will gradually loosen the backward flipping action of the armrest, affecting the stability and service life of the seat.

[0019] 2. The utility model sets a constant temperature component in the anti-loosening structure of the seat armrest. When a person sits on the base surface of the seat, its pressure sensor generates data, which in turn causes the pressure sensor to generate an electrical signal that is transmitted to the controller through a wire, so that the controller controls the temperature sensor to operate. The temperature sensor generates data according to the ambient temperature. At the same time, the temperature sensor generates an electrical signal that is transmitted to the controller through a wire. When the temperature is higher than the set temperature value, the controller controls the ventilation fan to operate, so that the ventilation fan generates airflow to ventilate and dissipate heat for cooling the seat. Conversely, when the temperature is lower than the set temperature value, the controller controls the heating wire and the ventilation fan to operate at the same time. The heating wire heats the airflow of the ventilation fan, and then blows hot air to the seat to heat it up, thereby solving the obvious seasonal discomfort of existing seats during daily use: in hot summer, the seat cushion often lacks breathability due to material and design problems, resulting in a feeling of stuffiness and discomfort when sitting on it; and in cold winter, the seat cushion cannot provide sufficient thermal insulation effect, and sitting for a long time will feel cold, which greatly reduces the physical comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the anti-loosening connection assembly of the utility model;

[0023] Figure 3 This is an enlarged schematic diagram of structure A of the utility model;

[0024] Figure 4 This is a structural diagram of the fastening bolt of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the thermostatic component of the utility model;

[0026] Figure 6 It is an enlarged schematic diagram of structure B of the present utility model.

[0027] Numbers in the figure:

[0028] 1. Chair legs; 2. Chair wheels; 3. Gas pressure rod; 4. Lifter; 5. Chair seat; 6. T-shaped armrest; 7. Chair back; 8. Anti-loosening connection assembly; 801. Mounting seat; 802. Positioning pin; 803. Mounting hole; 804. Fastening bolt; 805. Anti-slip flat groove; 806. Gasket body; 807. Gasket hole; 808. Anti-loosening nut; 9. Constant temperature assembly; 901. Fixed shell; 902. Temperature sensor; 903. Pressure sensor; 904. Controller; 905. Heating wire; 906. Ventilation fan; 10. Cover cap.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] like Figures 1 to 6 As shown, the utility model provides a chair armrest anti-loosening structure, comprising a chair leg 1: a chair wheel 2 is provided at the bottom of the chair leg 1, a gas pressure rod 3 is provided on the outer wall of the chair leg 1, a lifter 4 is provided at one end of the gas pressure rod 3, a seat 5 is mounted on the outer wall of the lifter 4, a T-shaped armrest 6 is mounted on the outer wall of the seat 5, and a chair back 7 is mounted on the outer wall of the seat 5; an anti-loosening connection component 8 for the T-shaped armrest 6;

[0034] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the anti-loosening connection component 8 includes a mounting base 801, the mounting base 801 is mounted on the bottom of the seat 5, the mounting base 801 is provided with two groups and are respectively located on the outer wall of the seat 5, a positioning pin 802 is installed on the outer wall of the mounting base 801, the positioning pin 802 is provided with two groups and are respectively located on the outer wall of the mounting base 801, the positioning pin 802 is located on one side of the fastening bolt 804, and the positioning pin 802 plays a guiding and fixing role for the T-shaped handrail 6, a mounting hole 803 is opened on the outer wall of the mounting base 801, a fastening bolt 804 is installed on the inner wall of the mounting hole 803, and a D-shaped anti-slip flat groove 805 of the fastening bolt 804 is provided on the outer wall of the fastening bolt A gasket body 806 is installed on the wall, and the anti-slip flat groove 805 and the gasket body 806 are both located in the inner cavity of the T-shaped handrail 6. The connection method between the gasket body 806 and the fastening bolt 804 is a sliding connection. A gasket hole 807 is opened on the outer wall of the gasket body 806, and the gasket hole 807 is a D-shaped structure. The gasket hole 807 and the anti-slip flat groove 805 cooperate to play a fixing role. A T-shaped handrail 6 is provided on one side of the gasket body 806 and on the outer wall of the fastening bolt 804, and the T-shaped handrail 6 and the mounting seat 801 are plugged in and fixed. A lock nut 808 is threadedly connected on the other side of the gasket body 806 and on the outer wall of the fastening bolt 804, and the lock nut 808 is located in the inner cavity of the T-shaped handrail 6.

[0035] In this embodiment, specific reference Figure 1 、 Figure 5 and Figure 6 , also includes a constant temperature component 9, the constant temperature component 9 includes a fixed shell 901, a temperature sensor 902, a pressure sensor 903 and a controller 904, the fixed shell 901 is installed at the bottom of the seat 5, the fixed shell 901 is provided with two groups and are respectively located at the bottom of the seat 5, and the fixed shell 901 is located on one side of the mounting seat 801, and the fixed shell 901 is located on one side of the lifter 4, a heating wire 905 is installed on the inner wall of the fixed shell 901, the heating wire 905 is located between the ventilation fan 906 and the seat 5, a ventilation fan 906 is embedded in the outer wall of the fixed shell 901, the ventilation fan 906 is provided with multiple groups and are respectively located on the outer wall of the fixed shell 901, the pressure sensor 903 is provided on the inner wall of the seat 5, the temperature sensor 902 is installed on the inner wall of the seat 5, and the controller 904 is provided on the outer wall of the fixed shell 901.

[0036] Among them, a cap 10 is installed on one side of the anti-loosening nut 808 and on the outer wall of the T-shaped armrest 6. The controller 904 is connected to the pressure sensor 903, the heating wire 905, the temperature sensor 902 and the ventilation fan 906 through wires, and the connection method is electrical connection, so that the device is powered on. The chair wheels 2 are provided in multiple groups and are respectively located at the bottom corners of the chair legs 1. The T-shaped armrests 6 are provided in two groups and are respectively located on the opposite outer walls of the seat 5. The bottom of the seat 5 is a sieve-like structure, which facilitates the airflow of the ventilation fan 906 to blow into the inner cavity of the seat 5.

[0037] When the chair armrest anti-loosening structure of this scheme is working, a positioning pin 802 is installed on the outer wall of the mounting seat 801, a mounting hole 803 is opened on the outer wall of the mounting seat 801, and a fastening bolt 804 is installed on the inner wall of the mounting hole 803. The positioning pin 802 is located on one side of the fastening bolt 804, and the positioning pin 802 plays a guiding and fixing role for the T-shaped armrest 6. The fastening bolt 804 is inserted into the inner wall of the mounting hole 803, and then the T-shaped armrest 6 is fixed to the outer wall of the mounting seat 801 through the positioning pin 802. At the same time, the fastening bolt 804 passes through the T-shaped armrest 6 and extends to the inner cavity of the T-shaped armrest 6. Then, a D-shaped anti-skid flat groove 805 with a flat structure is provided on the outer wall of the fastening bolt 804, and a gasket body 806 is installed on the outer wall of the fastening bolt 804. A gasket hole 807 is opened on the outer wall of the gasket body 806, and the gasket hole 807 is a D-shaped structure. The sheet hole 807 and the anti-skid flat groove 805 cooperate to play a fixing role. First, the gasket body 806 is inserted into the outer wall of the fastening bolt 804, so that the D-shaped gasket hole 807 is stuck on the outer wall of the D-shaped flat structure anti-skid flat groove 805. The gasket hole 807 and the anti-skid flat groove 805 cooperate to play a fixing and anti-loosening role. Then, you only need to screw the anti-loosening nut 808 to fix the armrest T-shaped armrest 6. When the T-shaped armrest 6 flips back, the fastening bolt 804 is fixed, and its D-shaped gasket body 806 is in contact with the anti-skid flat groove 805 on the surface of the fastening bolt 804 to limit it, and will not rotate, which plays a good anti-loosening role, thereby solving the problem that when the armrest is flipped up, this design will cause the gasket to rotate, and then cause the nut to rotate and loosen. Over time, this rotation mechanism will gradually loosen the backward flipping action of the armrest, affecting the stability and service life of the seat.

[0038] Under the action of the pressure sensor 903 set on the inner wall of the seat 5, when a person sits on the base surface of the seat 5, the pressure sensor 903 generates data, which in turn causes the pressure sensor 903 to generate an electrical signal that is transmitted to the controller 904 through a wire, so that the controller 904 controls the temperature sensor 902 to operate. The temperature sensor 902 generates data according to the temperature of the environment. At the same time, the temperature sensor 902 generates an electrical signal that is transmitted to the controller 904 through a wire. When the temperature is higher than the set temperature value, the controller 904 controls the ventilation fan 906 to operate, so that the ventilation fan 906 generates airflow to the seat 5. Ventilation and heat dissipation are used to cool down the chair. Conversely, when the temperature is lower than the set temperature value, the controller 904 controls the heating wire 905 and the ventilation fan 906 to operate at the same time. The heating wire 905 heats the airflow of the ventilation fan 906, and then blows hot air to the seat 5 to warm it up, thereby solving the obvious seasonal discomfort of existing seats during daily use: in the hot summer, the seat cushions often lack breathability due to material and design problems, resulting in a stuffy and uncomfortable feeling when sitting on them; and in the cold winter, the seat cushions cannot provide sufficient thermal insulation effect, and sitting for a long time will feel cold, which greatly reduces the physical comfort.

[0039] 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 above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple 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 solution of the present invention.

Claims

1. A chair armrest anti-loosening structure, comprising a chair foot (1): The bottom of the chair leg (1) is provided with a chair wheel (2), the outer wall of the chair leg (1) is provided with a gas pressure rod (3), one end of the gas pressure rod (3) is provided with a lifter (4), a chair seat (5) is installed on the outer wall of the lifter (4), a T-shaped armrest (6) is installed on the outer wall of the chair seat (5), and a chair back (7) is installed on the outer wall of the chair seat (5); An anti-loosening connection assembly (8) for a T-shaped handrail (6); Its characteristics are: The anti-loosening connection assembly (8) includes a mounting seat (801), the mounting seat (801) is mounted on the bottom of the seat (5), a positioning pin (802) is mounted on the outer wall of the mounting seat (801), a mounting hole (803) is opened on the outer wall of the mounting seat (801), a fastening bolt (804) is mounted on the inner wall of the mounting hole (803), a D-shaped anti-slip plane groove (805) is provided on the outer wall of the fastening bolt (804), and a gasket body (80 6), a gasket hole (807) is provided on the outer wall of the gasket body (806), and the gasket hole (807) is a D-shaped structure, and the gasket hole (807) cooperates with the anti-slip plane groove (805) to play a fixing role, a T-shaped handrail (6) is provided on one side of the gasket body (806) and on the outer wall of the fastening bolt (804), and the T-shaped handrail (6) and the mounting seat (801) are plugged in and connected for fixing, and a locking nut (808) is threadedly connected on the other side of the gasket body (806) and on the outer wall of the fastening bolt (804).

2. The seat armrest anti-loosening structure according to claim 1, characterized in that: The invention also includes a constant temperature component (9), the constant temperature component (9) including a fixed shell (901), a temperature sensor (902), a pressure sensor (903) and a controller (904), the fixed shell (901) being installed at the bottom of the seat (5), and the fixed shell (901) being located on one side of the lifter (4), a heating wire (905) being installed on the inner wall of the fixed shell (901), a ventilation fan (906) being embedded in the outer wall of the fixed shell (901), the pressure sensor (903) being arranged on the inner wall of the seat (5), the temperature sensor (902) being arranged on the inner wall of the seat (5), and the controller (904) being arranged on the outer wall of the fixed shell (901).

3. The seat armrest anti-loosening structure according to claim 1, characterized in that: A cover cap (10) is installed on one side of the anti-loosening nut (808) and on the outer wall of the T-shaped handrail (6).

4. The seat armrest anti-loosening structure according to claim 2, characterized in that: The controller (904) is connected to a pressure sensor (903), a heating wire (905), a temperature sensor (902) and a ventilation fan (906) via wires, and the connection method is electrical connection. The chair wheels (2) are provided in multiple groups and are respectively located at the bottom corners of the chair legs (1).

5. The seat armrest anti-loosening structure according to claim 1, characterized in that: The T-shaped armrests (6) are provided in two groups and are respectively located on opposite outer walls of the seat (5); the mounting seats (801) are provided in two groups and are respectively located on the outer walls of the seat (5); and the positioning pins (802) are provided in two groups and are respectively located on the outer walls of the mounting seats (801).

6. The seat armrest anti-loosening structure according to claim 1, characterized in that: The positioning pin (802) is located on one side of the fastening bolt (804), and the positioning pin (802) plays a guiding and fixing role for the T-shaped handrail (6). The connection mode of the gasket body (806) and the fastening bolt (804) is a sliding connection.

7. The seat armrest anti-loosening structure according to claim 2, characterized in that: The anti-slip plane groove (805) and the gasket body (806) are both located in the inner cavity of the T-shaped armrest (6), the anti-loosening nut (808) is located in the inner cavity of the T-shaped armrest (6), and the fixed shell (901) is provided in two groups and is respectively located at the bottom of the seat (5), and the fixed shell (901) is located on one side of the mounting seat (801).

8. The seat armrest anti-loosening structure according to claim 2, characterized in that: The heating wire (905) is located between the ventilation fan (906) and the seat (5), and the bottom of the seat (5) is a sieve-shaped structure. The ventilation fans (906) are provided in multiple groups and are respectively located on the outer wall of the fixed shell (901).

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