Lift gas fire table

Abstract

The utility model discloses a lifting type gas fire table, it includes desktop, four table legs, furnace basin and combustor, all the table legs all are equipped with the installation passageway, every installation passageway all is provided with rotating lifting device, every rotating lifting device all is installed with main bevel gear, all the table legs between installation has hexagonal driving link and first hexagonal linkage link, and the hexagonal driving link and first hexagonal linkage link between being provided with second hexagonal linkage link, the both ends of hexagonal driving link, the both ends of first hexagonal linkage link and the both ends of second hexagonal linkage link all are installed with auxiliary bevel gear, and every auxiliary bevel gear all is with the main bevel gear on rotating lifting device in corresponding position meshing connection, the end of hexagonal driving link is installed with rotating handle, the utility model discloses not only simple overall structure, still has the advantages such as convenient installation, high work stability, light overall weight, long service life, convenient to use and high use safety.

Description

Technical Field

[0001] This utility model relates to a fire basin table, and in particular a liftable gas fire basin table. Background Technology

[0002] Fire pit tables are now commonly used in outdoor and indoor dining, gatherings, and leisure settings. With increasing demands, many fire pit tables with height adjustment functions have appeared on the market. Common height-adjustable fire pit tables primarily use electric lifting cylinders or other electric lifting methods to adjust the height for different needs such as barbecuing and heating. However, the design of fire pit tables with electric lifting mechanisms requires consideration not only of the installation location of the lifting mechanism, but also the wiring connections between the four legs, the structure of each individual leg, and the connection between the electric lifting mechanism and the external power source. Add to this the structure of the burner and gas pipes, resulting in a relatively complex overall structure. Therefore, existing gas fire pit tables with electric lifting mechanisms suffer from structural complexity. Utility Model Content

[0003] The purpose of this invention is to provide a liftable gas-fired brazier table. This invention has the advantage of a simple overall structure.

[0004] The technical solution of this utility model: a liftable gas brazier table, including a tabletop, four table legs, a brazier set on the tabletop, and a burner installed in the brazier. All the table legs are provided with vertical mounting channels, and each mounting channel is equipped with a rotating lifting device. The end of each rotating lifting device is connected to the bottom surface of the tabletop, and each rotating lifting device is equipped with a main bevel gear. A hexagonal drive rod and a first hexagonal linkage rod are installed parallel to each of the table legs, and a second hexagonal linkage rod is vertically arranged between the hexagonal drive rod and the first hexagonal linkage rod. Both ends of the hexagonal drive rod, both ends of the first hexagonal linkage rod, and both ends of the second hexagonal linkage rod are equipped with secondary bevel gears, each secondary bevel gear meshing with the main bevel gear on the corresponding rotating lifting device. A rotating handle is installed at the end of the hexagonal drive rod. The secondary bevel gears mesh with the main bevel gears to connect at different rotation speeds. The hexagonal drive rod, the first hexagonal linkage rod, and the second hexagonal linkage rod, along with the handle mounted on the hexagonal drive rod, allow all the rotating lifting devices to move synchronously up or down during lifting operations. This is achieved by simply rotating the hexagonal drive rod via the handle, which in turn drives the meshing transmission between the secondary and primary bevel gears and the rotation of the hexagonal drive rod. The overall structure is simple, the transmission is smooth, and the operation is highly stable. Furthermore, the compact design of the bevel gear structure makes it well-suited for installation in confined spaces, such as those around table legs, simplifying installation. Additionally, by designing the hexagonal drive rod, the first hexagonal linkage rod, and the second hexagonal linkage rod with a regular hexagonal cross-section, compared to a circular cross-section linkage rod, a larger contact area and stronger torsional resistance are provided during rotation and transmission, ensuring the stability and precision of the power transmission.

[0005] In the aforementioned lifting gas brazier table, the rotating lifting device includes a lifting fixing seat fixedly installed in the installation channel, and a lead screw is threadedly installed in the lifting fixing seat; the top end of the lead screw is located above the top surface of the table leg, and a linkage seat that moves up and down with the lead screw is installed at the top end of the lead screw, with a support sleeve sleeved on the linkage seat; the top end of the support sleeve is fixedly connected to the bottom surface of the table; the main bevel gear is installed at the end of the lead screw; by setting the rotating lifting device to consist of a lead screw, a lifting fixing seat, and a linkage seat, the overall structure is simpler and lighter; and the setting of the connecting sleeve not only protects the hexagonal active rod, the first hexagonal linkage rod, and the second hexagonal linkage rod, extending their service life; but also provides support between every two adjacent support sleeves, thereby improving structural stability.

[0006] In the aforementioned lifting gas fire basin table, a connecting sleeve connects each pair of adjacent support sleeves. Each connecting sleeve has a connecting channel in the middle for installing a hexagonal active rod, a first hexagonal linkage rod, and a second hexagonal linkage rod. The side of the support sleeve has a through groove for the rotating handle to pass through, and one end of the support sleeve is located in the installation channel.

[0007] In the aforementioned height-adjustable gas brazier table, a locking component is rotatably installed at the top of the side of the table leg, with one end of the locking component positioned between the inner wall of the table leg and the outer wall of the support sleeve; a lifting component is threaded onto the bottom surface of the table leg; the locking component can fix the position of the support sleeve to a certain extent, preventing the support sleeve from causing the tabletop to sink during use, thus further ensuring the stability of use; and the lifting component on the bottom surface of the table leg can raise the height of the entire table leg to a certain extent.

[0008] In the aforementioned liftable gas brazier table, the tabletop is provided with a mounting groove for installing the brazier, and the opening of the mounting groove is provided with an expansion groove; a cover plate for covering the entire brazier is installed on the expansion groove, and two symmetrically distributed handle grooves are provided in the middle of the top surface of the cover plate; by setting a cover plate that can cover the entire brazier, when the brazier is not in use, the cover plate is placed in the expansion groove, so that the top surface of the cover plate is flush with the tabletop, forming a complete tabletop, and can then be used as a regular table, improving the flexibility of use; and the handle grooves in the middle of the cover plate facilitate the removal and placement of the cover plate, making it convenient to use.

[0009] In the aforementioned liftable gas brazier table, the burner is equipped with a gas pipe that connects to an external gas tank. A safety valve is installed on the gas pipe, and a thermocouple is electrically connected to one side of the safety valve. A pressure reducing valve is installed on the end of the gas pipe near the external gas tank. By installing a safety valve on the gas pipe and electrically connecting a thermocouple to it, the voltage of the thermocouple changes with temperature, thereby controlling the opening and closing of the safety valve. This prevents the gas pipe from continuing to supply gas even when it is not ignited, thus avoiding gas poisoning and ensuring safety during use.

[0010] Compared with existing technologies, this utility model improves upon existing gas-fired brazier tables by installing rotating lifting devices on each of the four table legs. Each rotating lifting device is equipped with a main bevel gear, which, in conjunction with a secondary bevel gear meshing with the main bevel gear, forms a hexagonal drive rod, a first hexagonal linkage rod, and a second hexagonal linkage rod, all connected to different rotating lifting devices. A handle is also mounted on the hexagonal drive rod. During lifting operations, simply rotating the hexagonal drive rod via the handle causes the secondary bevel gear on the hexagonal drive rod to rotate. The meshing transmission between the secondary and main bevel gears causes the two rotating lifting devices connected to the hexagonal drive rod to rotate and lift. Simultaneously, the main bevel gear on the rotating lifting device meshes with the secondary bevel gear on the first hexagonal linkage rod, causing the first hexagonal linkage rod to rotate and drive the other rotating lifting device. The device performs rotational and lifting movements; finally, the second hexagonal linkage rod rotates through the rotational lifting device, which in turn drives the remaining rotational lifting devices to perform rotational and lifting operations. This allows all rotational lifting devices to rise or fall individually simply by rotating the hexagonal drive rod, resulting in a simple overall structure. Motion conversion and transmission are achieved through the main bevel gear and auxiliary bevel gear, ensuring smooth transmission and high operational stability. Furthermore, the compact structure of bevel gears makes them well-suited for installation in confined spaces, such as table legs, facilitating installation. Simultaneously, by designing the hexagonal drive rod, the first hexagonal linkage rod, and the second hexagonal linkage rod with regular hexagonal cross-sections, compared to linkage rods with circular cross-sections, a larger contact area and stronger torsional resistance are provided during rotation and transmission, ensuring the stability and precision of power transmission.

[0011] Furthermore, this utility model simplifies the overall structure and reduces weight by assembling the rotating lifting device into a screw rod, a lifting fixed seat, and a linkage seat. A support sleeve that moves up and down with the screw rod is installed on the linkage seat, and the top of the support sleeve is fixedly connected to the bottom surface of the tabletop. This allows the support sleeve to not only replace the screw rod in moving the tabletop up and down, reducing pressure on the screw rod, but also to protect the outside of the screw rod, extending its service life. By setting a connecting sleeve that communicates with the support sleeve, and placing the hexagonal drive rod, the first hexagonal linkage rod, and the second hexagonal linkage rod in corresponding positions within the connecting sleeve, the connecting sleeve not only protects the hexagonal drive rod, the first hexagonal linkage rod, and the second hexagonal linkage rod, extending their service life, but also provides support between each pair of adjacent support sleeves, improving structural stability. Locking devices are installed on the sides of the table legs, allowing the support sleeve to be secured. The support sleeve is fixed in place to prevent the tabletop from sinking during use, further ensuring stability. The lifting mechanism on the bottom of the table legs raises the overall height. A cover plate that completely covers the stove basin allows the cover to be placed in an expansion slot when not in use, making its top flush with the tabletop and enabling it to be used as a regular table, increasing flexibility. A handle groove in the center of the cover plate facilitates easy removal and use. A safety valve with a thermocouple electrically connected to the gas pipe controls the opening and closing of the safety valve by adjusting the voltage of the thermocouple as the temperature changes, preventing gas poisoning even when the gas pipe is not ignited. Therefore, this invention not only has a simple overall structure but also offers advantages such as easy installation, high operational stability, light weight, long service life, ease of use, and high safety.

[0012] Advantages. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is the front view of this utility model;

[0015] Figure 3 This is a top view of the present invention;

[0016] Figure 4 This is a bottom view of the present invention;

[0017] Figure 5 yes Figure 4 Sectional view at point AA;

[0018] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0019] Figure 7 This is a schematic diagram of the connection structure of the hexagonal active rod, the first hexagonal linkage rod, and the second hexagonal linkage rod;

[0020] Figure 8 yes Figure 7 A magnified view of a section at point B.

[0021] The labels in the attached diagram are as follows: 1-Tabletop, 2-Table leg, 3-Stove basin, 5-Installation channel, 6-Main bevel gear, 7-Hexagonal drive rod, 8-First hexagonal linkage rod, 9-Second hexagonal linkage rod, 10-Secondary bevel gear, 11-Rotating handle, 12-Lifting fixing seat, 13-Screw rod, 14-Linkage seat, 15-Support sleeve, 16-Connecting sleeve, 18-Lifting component, 20-Cover plate, 21-Handle groove, 22-Gas duct, 23-Safety valve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0023] Example: A height-adjustable gas-fired brazier table, configured as follows... Figures 1 to 8 As shown, the table includes a tabletop 1, four table legs 2, a stove basin 3 mounted on the tabletop 1, and a burner installed in the stove basin 3. All table legs 2 are provided with vertical mounting channels 5, and each mounting channel 5 contains a rotating lifting device. The end of each rotating lifting device is connected to the bottom surface of the tabletop 1, and each rotating lifting device is equipped with a main bevel gear 6. Hexagonal drive rods 7 and first hexagonal linkage rods 8 are installed in parallel between all table legs 2, and a second hexagonal linkage rod 9 is vertically arranged between the hexagonal drive rod 7 and the first hexagonal linkage rod 8. Secondary bevel gears 10 are installed at both ends of the hexagonal drive rod 7, both ends of the first hexagonal linkage rod 8, and both ends of the second hexagonal linkage rod 9. Each secondary bevel gear 10 meshes with the main bevel gear 6 on the corresponding rotating lifting device. A rotating handle 11 is installed at the end of the hexagonal drive rod 7.

[0024] The rotating lifting device includes a lifting fixing seat 12 fixedly installed in the installation channel 5, and a lead screw 13 is threadedly installed in the lifting fixing seat 12. The top end of the lead screw 13 is located above the top surface of the table leg 2, and a linkage seat 14 that moves up and down with the lead screw 13 is installed at the top end of the lead screw 13. A support sleeve 15 is sleeved on the linkage seat 14. The top end of the support sleeve 15 is fixedly connected to the bottom surface of the tabletop 1. The main bevel gear 6 is installed at the end of the lead screw 13. A connecting sleeve 16 connects each two adjacent support sleeves 15. Each connecting sleeve 16 has a connecting channel in the middle for installing a hexagonal drive rod 7, a first hexagonal linkage rod 8, and a second hexagonal linkage rod 9. A through groove is provided on the side of the support sleeve 15 for the rotation handle 11 to pass through. One end of the support sleeve 15 is set in the installation channel 5; a locking member is rotatably installed on the top of the side of the table leg 2, and one end of the locking member is set between the inner side wall of the table leg 2 and the outer side wall of the support sleeve 15; a lifting member 18 is threaded on the bottom surface of the table leg 2; the tabletop 1 is provided with an installation groove for installing the stove basin 3, and an expansion groove is provided at the opening of the installation groove; a cover plate 20 for covering the entire stove basin 3 is installed on the expansion groove, and two symmetrically distributed handle grooves 21 are provided in the middle of the top surface of the cover plate 20; the burner is provided with a gas pipe 22 communicating with an external gas tank, and a safety valve 23 is provided on the gas pipe 22, and a thermocouple is electrically connected to one side of the safety valve 23; a pressure reducing valve is installed on the end of the gas pipe 22 near the end communicating with the external gas tank.

[0025] Working principle: To facilitate the differentiation of the positions of the four table legs 2 and the four rotating lifting devices, the four table legs 2 will be distinguished as the front left table leg, the rear left table leg, the front right table leg, and the rear right table leg in the following content; the hexagonal active lever 7 is located between the front left table leg and the rear left table leg; the first hexagonal linkage lever 8 is located between the front right table leg and the rear right table leg; the second hexagonal linkage lever 9 is located between the front left table leg and the front right table leg.

[0026] During the lifting operation, firstly, the locking member 17 is rotated outward to reduce the pressure of the locking member 17 on the outer side of the support sleeve 15, allowing the support sleeve 15 to move up and down more smoothly. Then, the rotating handle 11 is rotated, which in turn drives the hexagonal drive rod 7 to rotate. The rotation of the hexagonal drive rod 7 then drives the two auxiliary bevel gears 10 on the hexagonal drive rod 7 to rotate. Because the two auxiliary bevel gears 10 are respectively connected to the main bevel gears 6 on the front left table leg and the rear left table leg, the rotation of the auxiliary bevel gears 10 will mesh with the main bevel gears 6, thereby causing the main bevel gears 6 on the front left table leg and the rear left table leg to rotate. The rotation of the main bevel gears 6 will then drive the front left table leg and the rear left table leg to rotate. The lead screw 13 on the foot rotates because it is threadedly connected to the lifting fixing seat 12, which is fixedly installed on the front left table leg and the rear left table leg. The position of the lifting fixing seat 12 remains fixed, while the rotation of the lead screw 13 creates a threaded transmission with the lifting fixing seat 12, allowing the lead screw 13 on the front left table leg and the rear left table leg to move up and down. During the movement of the lead screw 13, the linkage seat 14 moves together, and during the movement of the linkage seat 14, the support sleeve 15 moves together. After the support sleeve 15 moves, the tabletop 1 moves up and down, thus allowing the two ends of the left side of the tabletop to move up and down. At the same time, the main bevel gear 6 on the left front table leg and the auxiliary gear on the second hexagonal linkage rod 9... The bevel gear 10 engages with the main bevel gear 6 on the front left table leg, causing it to rotate. Simultaneously, the rotation of the main bevel gear 6 on the second hexagonal linkage 9 drives the secondary bevel gear 10 on the second hexagonal linkage 9 to rotate. This rotation of the secondary bevel gear 10 on the second hexagonal linkage 9 then drives the second hexagonal linkage 9 to rotate, which in turn drives another bevel gear 10 on the second hexagonal linkage 9 to rotate. This other bevel gear 10 on the second hexagonal linkage 9 engages with the main bevel gear 6 on the front right table leg, causing it to rotate. This rotation of the main bevel gear 6 on the front right table leg drives the lead screw 13 on the front right table leg to rotate, and also drives the secondary bevel gear 10 on the first hexagonal linkage 8 to rotate. When the secondary bevel gear 10 on rod 8 rotates, it drives the first hexagonal linkage rod 8 to rotate. When the first hexagonal linkage rod 8 rotates, it drives another secondary bevel gear 10 on the first hexagonal linkage rod 8 to rotate, thereby causing the main bevel gear 6 located on the rear right table leg, which meshes with the secondary bevel gear 10, to rotate. This, in turn, causes the lead screw 13 located on the rear right table leg to rotate. When the lead screw 13 on the front right table leg and the lead screw 13 on the rear right table leg rotate, they will drive the corresponding support sleeves 15 to move synchronously, thereby causing the right end of the tabletop 1 to move up and down synchronously, thus completing the adjustment of the height of the tabletop 1 (during the rotation process, the rotation direction of the lead screws 13 on the front left table leg, rear left table leg, front right table leg and rear right table leg is the same).Simultaneously, as the support sleeve 15 moves up and down, it drives the connecting sleeve 16 to move up and down as well, thereby driving the hexagonal active rod 7, the first hexagonal linkage rod 8, and the second hexagonal linkage rod 9 to move together, completing the entire lifting operation. To raise or lower the desktop 1, simply control the direction of rotation of the handle 11.

[0027] When the burner is to be used for combustion, the pressure reducing valve and safety valve are opened, and combustion begins in the furnace basin 3 via the ignition needle on the burner. Simultaneously, the thermocouple's internal voltage changes as the temperature rises during combustion, generating a potential difference. When this potential difference appears, the internal controller (which can be located on the bottom of the desktop 1, specifically an FX2C-20MRD, Cortex-R8, or Cortex-M7 model) detects the voltage signal. The controller then determines that the burner is operating normally and controls the safety valve 23 to open, allowing the gas pipe 22 to supply gas normally. When the flame extinguishes or the temperature drops, the thermocouple is no longer heated, the thermocouple potential difference decreases or disappears, the controller no longer detects a voltage signal, determines that the burner is malfunctioning, and controls the safety valve 23 to close, cutting off the gas supply to the gas pipe 22 to prevent gas leakage or even explosion, ensuring safe operation.

Claims

1. A liftable gas-fired brazier table, comprising a tabletop (1), four table legs (2), a brazier (3) mounted on the tabletop (1), and a burner installed inside the brazier (3), characterized in that: All the table legs (2) are provided with vertical mounting channels (5), and each mounting channel (5) is provided with a rotating lifting device; the end of each rotating lifting device is connected to the bottom surface of the tabletop (1), and each rotating lifting device is provided with a main bevel gear (6); all the table legs (2) are provided with parallel hexagonal drive rods (7) and first hexagonal linkage rods (8), and a second hexagonal linkage rod (9) is provided vertically between the hexagonal drive rods (7) and the first hexagonal linkage rods (8); both ends of the hexagonal drive rods (7), both ends of the first hexagonal linkage rods (8) and both ends of the second hexagonal linkage rods (9) are provided with secondary bevel gears (10), and each secondary bevel gear (10) is meshed with the main bevel gear (6) on the rotating lifting device at the corresponding position; the end of the hexagonal drive rod (7) is provided with a rotating handle (11).

2. The height-adjustable gas brazier table according to claim 1, characterized in that: The rotating lifting device includes a lifting fixing seat (12) fixedly installed in the installation channel (5), and a lead screw (13) is threadedly installed in the lifting fixing seat (12); the top end of the lead screw (13) is located above the top surface of the table leg (2), and a linkage seat (14) is installed at the top end of the lead screw (13) to move up and down together with the lead screw (13); a support sleeve (15) is sleeved on the linkage seat (14); the top end of the support sleeve (15) is fixedly connected to the bottom surface of the tabletop (1); the main bevel gear (6) is installed at the end of the lead screw (13).

3. The height-adjustable gas brazier table according to claim 2, characterized in that: A connecting sleeve (16) connects each pair of adjacent support sleeves (15). Each connecting sleeve (16) has a connecting channel in the middle for installing the hexagonal active rod (7), the first hexagonal linkage rod (8), and the second hexagonal linkage rod (9). The side of the support sleeve (15) has a through groove for the rotating handle (11) to pass through. One end of the support sleeve (15) is set in the installation channel (5).

4. The height-adjustable gas brazier table according to claim 3, characterized in that: A locking element is rotatably installed on the top of the side of the table leg (2), and one end of the locking element is located between the inner side wall of the table leg (2) and the outer side wall of the support sleeve (15); a lifting element (18) is threaded on the bottom surface of the table leg (2).

5. The height-adjustable gas brazier table according to claim 1, characterized in that: The tabletop (1) is provided with an installation groove for installing the stove basin (3), and an expansion groove is provided at the opening of the installation groove; a cover plate (20) for covering the entire stove basin (3) is installed on the expansion groove, and two symmetrically distributed handle grooves (21) are provided in the middle of the top surface of the cover plate (20).

6. The liftable gas brazier table according to any one of claims 1 to 5, characterized in that: The burner is provided with a gas pipe (22) that communicates with an external gas tank. A safety valve (23) is provided on the gas pipe (22), and a thermocouple is electrically connected to one side of the safety valve (23). A pressure reducing valve is installed on the end of the gas pipe (22) near the external gas tank.

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