Photovoltaic energy conversion device

Abstract

The utility model relates to the technical field of energy conversion, in particular to a photovoltaic energy conversion device, which comprises an insulating box body for fixing an internal structure and protecting, and an inverter for adjusting power voltage is arranged in the insulating box body close to the front end. The top of the insulation box body is provided with a combinable photovoltaic panel assembly used for converting solar energy into electric energy, and the periphery of the bottom of the insulation box body is provided with universal wheels capable of flexibly rotating; according to the utility model, electric energy is transmitted to the storage battery through the pins and the ports by arranging the controller inside the insulating box body and the photovoltaic panel assembly at the top, and is subjected to power and electric power conversion by the inverter, so that quick conversion of small-sized energy conversion equipment is realized, and anti-collision protection on internal electrons is realized under the action of the insulating box body; moreover, the universal wheels connected with the bottom of the insulation box body enable the whole device to move freely in a well-installed state.

Description

Technical Field

[0001] The utility model relates to the technical field of energy conversion, in particular to a photovoltaic energy conversion device. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic power generation systems are mainly composed of photovoltaic modules, battery packs, charge and discharge controllers, inverters and other equipment. Solar cells are packaged and protected after being connected in series to form large-area solar cell modules, which are then combined with power controllers and other components to form photovoltaic power generation devices.

[0003] The utility model with the announcement number CN215498886U provides a photovoltaic power generation energy conversion device, including a box body, an air inlet and an air outlet, a photovoltaic power generation panel arranged on the box body, a fan fixedly arranged on the outer side of the box body, an air suction hood, one end of which is connected to the input end of the fan, and the other end is connected to the air outlet of the box body, an output pipe, one end of which is connected to the output end of the fan, a heat pipe, which is connected to the other end of the output pipe, a nozzle fixedly arranged on the heat pipe and connected to the heat pipe, and a water tank, the heat pipe and the nozzle are arranged in the water tank, which can reduce the pollution of the heat in the box body to the environment and can effectively improve the utilization rate of the heat;

[0004] The above technical solution, by opening an air inlet and an air outlet on the insulating box, draws the air heated by the photovoltaic panel in the insulating box out from the air outlet through the fan and the air suction hood to heat the water in the water tank, thereby fully absorbing the heat in the insulating box, so that the heat around the photovoltaic power generation energy conversion device is low, and the pollution of the environment by the heat in the insulating box is reduced, and the utilization rate of heat can be effectively improved; however, the overall volume is too large, which is not convenient for folding, storing and carrying when going out, and it is not convenient to flexibly move the position of the equipment as a whole after installation, and it is not convenient to inspect and replace the internal components after long-term use. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic energy conversion device to solve the problem that the photovoltaic power generation energy conversion device with authorization announcement number CN215498886U proposed in the above background technology has an overall large volume, which is not convenient for folding, storing and carrying when going out, and it is not convenient to flexibly move the position of the equipment as a whole after installation, and it is not convenient to repair and replace the internal components after long-term use.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A photovoltaic energy conversion device includes an insulating box for fixing an internal structure and providing protection, an inverter for adjusting the power voltage is provided near the front end of the insulating box, a battery for storing electric energy is provided near the rear end of the insulating box, a controller for preventing the battery from being overcharged and over-discharged is provided on the top of the battery, a combinable photovoltaic panel assembly for converting solar energy into electric energy is provided on the top of the insulating box, a blower is provided near the right end of the insulating box, a groove is provided on the outside of the insulating box, and universal wheels that can be flexibly rotated are provided on all sides of the bottom of the insulating box.

[0008] Preferably, an interface groove for passing the wires is opened at the front end of the rectangular insulating box, a display groove is opened near the top of the front end of the insulating box, an air inlet is opened on the right outer surface of the insulating box, a first protective net is provided on the air inlet, an exhaust port is opened on the left outer surface of the insulating box, a second protective net is provided on the exhaust port, the universal wheel is fixedly connected to the bottom of the insulating box by screws, and a fixing groove is opened on the top of the insulating box.

[0009] In the utility model, an insulating box is provided to protect internal electronic components, an interface slot is provided to facilitate insertion of wires of internal equipment from the outside, the display slot is used to facilitate observation and operation of internal signal lights and switches, an air inlet is provided to transport outside air to the inside of the equipment, a first protective net is provided to intercept debris outside the air inlet, an exhaust port is provided to discharge internal air, a second protective net is provided to intercept debris outside the exhaust port, the universal wheels connected at the bottom facilitate movement of the insulating box as a whole, and the fixed slot is used to place and connect inverters, batteries, blowers and controllers.

[0010] Preferably, the width of the inverter corresponds to the width of the fixing slot, the inverter is fixedly connected to the front end of the insulating box by screws, a socket is provided at the front end of the inverter, the width of the socket corresponds to the width of the interface slot, a switch for controlling the opening and closing of the device is provided near the top of the front end of the inverter, a signal light for displaying the internal power storage status is provided on the right side of the switch, and the positions of the switch and the signal light correspond to the position of the display slot.

[0011] In the utility model, the socket is provided with a plurality of jacks for connecting external devices. The jacks are provided to facilitate simultaneous power connection for multiple people when going out. The interface slot is convenient for direct insertion from the outside. The display slot is convenient for direct observation of the internal energy storage state from the outside. The switch is used to control the opening and closing states of the device. The signal light is used to display the energy storage state of the internal battery. When the energy is fully stored, the light is green, and when it is not full, the light is red. The switch and the signal light are fixedly connected to the front end of the inverter by screws, and are electrically connected to the inverter by internal wires.

[0012] Preferably, the blower is fixedly connected to the insulating box by screws, a fan is provided in the middle of the blower, the fan is fixedly connected to the blower by screws, the battery is fixedly connected to the rear end of the insulating box by screws, and the terminal posts at the front end of the battery are electrically connected to the terminal posts at the rear end of the inverter by wires.

[0013] In the utility model, a fan is arranged to blow out air from the air inlet to dissipate heat for internal equipment and discharge the air through the exhaust port, the blower is used to stabilize the fan, and the inverter is electrically connected to the battery to change the output power.

[0014] Preferably, the terminal post at the bottom of the controller is electrically connected to the terminal post at the top of the battery through a wire, the width of the controller corresponds to the width of the fixing slot, and is plugged into the insulating box through the fixing slot, and ports for receiving electrical energy are symmetrically opened on the top of the controller.

[0015] In the utility model, a storage battery is provided for storing the electric energy converted by the photovoltaic panel assembly, a controller is used for limiting overcharging and overdischarging of the storage battery, and a port is provided for receiving the electric energy transmitted by the photovoltaic panel assembly.

[0016] Preferably, the photovoltaic panel assembly includes a fixed photovoltaic panel and movable photovoltaic panels that are movably plugged in at both sides. Pins for transmitting electric energy are symmetrically provided at the bottom of the fixed photovoltaic panel. The width of the pins is adapted to the width of the port and is plugged in with the controller. A number of slots are symmetrically provided on both sides of the fixed photovoltaic panel.

[0017] In the utility model, a photovoltaic panel assembly is provided for converting solar energy into electric energy, wherein the fixed photovoltaic panel is connected to the controller via pins at the bottom, and the connection slot is provided for plugging the movable photovoltaic panel.

[0018] Preferably, a plurality of pins are provided on one side of the movable photovoltaic panel, and a plurality of slots are provided on the other side of the movable photovoltaic panel, and the width of the pins corresponds to the width of the slots and the width of the connecting grooves, and the movable photovoltaic panel is plug-fitted with the fixed photovoltaic panel and fixedly connected by screws, and the movable photovoltaic panels are plug-fitted with pins and fixedly connected by screws.

[0019] In the utility model, a movable photovoltaic panel is provided to increase the contact area with solar energy and increase the conversion power. The pins with electrical transmission characteristics cooperate with the slots to realize the mortise and tenon structure plug-in cooperation between the movable photovoltaic panel and the fixed photovoltaic panel and connect them through screws, making the installation more stable.

[0020] Preferably, a top cover with a sealing function is provided on the top of the insulating box, handles are symmetrically provided on the upper surface of the top cover, the width of the top cover corresponds to the width of the insulating box, and the top cover is fixedly connected to the insulating box by screws.

[0021] In the utility model, a top cover is provided to fix and restrict the internal equipment, so that it is convenient to carry outside, and a handle is convenient to carry by hand.

[0022] Preferably, a drawer box is provided in the drawer slot, the width of the drawer box corresponds to the width of the drawer slot, a storage groove is provided on the upper surface of the drawer box, the width of the storage groove corresponds to the width of the movable photovoltaic panel and the width of the fixed photovoltaic panel, and a handle is provided on the right side of the drawer box, and the handle is fixedly connected to the drawer box by screws.

[0023] In the utility model, a drawer box is provided so that the device can store photovoltaic panel components under the action of the storage groove in a non-working state, and the handle facilitates the drawing out and pushing in of the drawer box as a whole.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] 1. The utility model transmits electric energy to the battery through pins and ports by arranging the controller inside the insulating box and the photovoltaic panel assembly on the top, and then converts the power of the inverter to achieve rapid conversion in a small energy conversion device. Under the action of the insulating box, the internal electronics are protected from collision and the outsiders can also be protected from electricity. The universal wheels connected to the bottom of the insulating box enable the whole device to move freely in the installed state.

[0026] 2. The utility model uses the cooperation of the drawer box and the drawer slot to store the photovoltaic panel components when the device is not in working state, thereby reducing the carrying volume, and the heat generated inside the device is quickly dissipated under the action of the fan. The top cover with a handle helps to carry the device by the handle after the whole is stored, and opening the top cover helps to inspect and replace the components that have been used for a long time inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the working state of the utility model;

[0028] Figure 2 It is an overall schematic diagram of the non-working state of the utility model;

[0029] Figure 3 It is an overall exploded schematic diagram of the utility model;

[0030] Figure 4 This is a schematic diagram of the battery and inverter structure of the utility model;

[0031] Figure 5 This is a schematic diagram of the insulation box structure of the utility model;

[0032] Figure 6 This is a schematic diagram of the photovoltaic panel assembly structure of the utility model.

[0033] The meaning of each number in the figure is:

[0034] 1. Insulation box; 10. Fixing slot; 11. Display slot; 12. Interface slot; 13. Air inlet; 130. First protective net; 14. Exhaust port; 140. Second protective net; 15. Extraction slot;

[0035] 2. Inverter; 20. Socket; 21. Switch; 22. Signal light;

[0036] 3. Battery;

[0037] 4. Controller; 40. Port;

[0038] 5. Photovoltaic panel assembly; 50. Fixed photovoltaic panel; 500. Connection slot; 501. Pin; 51. Movable photovoltaic panel; 510. Latch; 511. Slot;

[0039] 6. Universal wheel;

[0040] 7. drawer; 70. storage slot; 71. handle;

[0041] 8. Blower; 80. Fan;

[0042] 9. Top cover; 90. Handle. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] See also Figure 1-Figure 6 , this embodiment provides a technical solution:

[0045] A photovoltaic energy conversion device includes an insulating box 1 in a rectangular shape for fixing an internal structure and for protection. An interface slot 12 for passing wires is provided at the front end of the insulating box 1, a display slot 11 is provided near the top of the front end of the insulating box 1, an air inlet 13 is provided on the right outer surface of the insulating box 1, a first protective net 130 is provided on the air inlet 13, an exhaust port 14 is provided on the left outer surface of the insulating box 1, a second protective net 140 is provided on the exhaust port 14, a universal wheel 6 is fixedly connected to the bottom of the insulating box 1 by screws, and a fixing slot 10 is provided on the top of the insulating box 1.

[0046] In the utility model, an insulating box 1 is provided to protect internal electronic components, an interface slot 12 is provided to facilitate insertion of wires of internal equipment from the outside, a display slot 11 is provided to facilitate observation and operation of internal signal lights 22 and switches 21, an air inlet 13 is provided to transport outside air to the inside of the equipment, a first protective net 130 is provided to intercept debris outside the air inlet 13, an exhaust port 14 is provided to discharge internal air, a second protective net 140 is provided to intercept debris outside the exhaust port 14, a universal wheel 6 connected at the bottom facilitates movement of the insulating box 1 as a whole, and a fixed slot 10 is used to place and connect an inverter 2, a battery 3, a blower 8 and a controller 4.

[0047] Among them, an inverter 2 for adjusting the power voltage is provided near the front end inside the insulating box 1, and the width of the inverter 2 corresponds to the width of the fixing slot 10. The inverter 2 is fixedly connected to the front end of the insulating box 1 by screws. A socket 20 is provided at the front end of the inverter 2, and the width of the socket 20 corresponds to the width of the interface slot 12. A switch 21 for controlling the opening and closing of the device is provided near the top of the front end of the inverter 2, and a signal light 22 for displaying the internal power storage status is provided on the right side of the switch 21. The positions of the switch 21 and the signal light 22 correspond to the position of the display slot 11.

[0048] Specifically, the socket 20 is provided with a plurality of jacks for connecting external devices. The jacks are provided to facilitate simultaneous power connection for multiple people when going out. The interface slot 12 is convenient for direct insertion from the outside. The display slot 11 is convenient for direct observation of the internal energy storage state from the outside. The switch 21 is used to control the opening and closing states of the device. The signal light 22 is used to display the energy storage state of the internal battery 3. When the energy is fully stored, it is a green light, and when it is not full, it is a red light. The switch 21 and the signal light 22 are both fixedly connected to the front end of the inverter 2 by screws, and are electrically connected to the inverter 2 through internal wires.

[0049] Secondly, a battery 3 for storing electric energy is provided near the rear end inside the insulating box 1. The battery 3 is fixedly connected to the rear end of the insulating box 1 by screws, and the terminal posts at the front end of the battery 3 are electrically connected to the terminal posts at the rear end of the inverter 2 by wires. A blower 8 is provided near the right end inside the insulating box 1. The blower 8 is fixedly connected to the insulating box 1 by screws. A fan 80 is provided in the middle of the blower 8, and the fan 80 is fixedly connected to the blower 8 by screws.

[0050] Furthermore, a fan 80 is provided to blow air from the air inlet 13 to dissipate heat for the internal equipment and discharge the air through the exhaust port 14 , and the blower 8 is used to stabilize the fan 80 , and the inverter 2 is electrically connected to the battery 3 to change the output power.

[0051] It should be noted that a controller 4 is provided on the top of the battery 3 to prevent the battery 3 from being overcharged or over-discharged. The terminal posts at the bottom of the controller 4 are electrically connected to the terminal posts at the top of the battery 3 via wires. The width of the controller 4 corresponds to the width of the fixing groove 10, and the controller 4 is plugged into the insulating box 1 through the fixing groove 10. Ports 40 for receiving electrical energy are symmetrically provided on the top of the controller 4.

[0052] Specifically, the storage battery 3 is used to store the electric energy converted by the photovoltaic panel assembly 5 , the controller 4 is used to limit overcharging and overdischarging of the storage battery 3 , and the opened port 40 is used to receive the electric energy transmitted by the photovoltaic panel assembly 5 .

[0053] In the utility model, a combinable photovoltaic panel assembly 5 for converting solar energy into electrical energy is provided on the top of the insulating box 1. The photovoltaic panel assembly 5 includes a fixed photovoltaic panel 50 and movable photovoltaic panels 51 that are movably plugged in at both sides. Pins 501 for transmitting electrical energy are symmetrically provided at the bottom of the fixed photovoltaic panel 50. The width of the pins 501 is compatible with the width of the port 40 and is plugged in with the controller 4. A number of connection grooves 500 are symmetrically provided on both sides of the fixed photovoltaic panel 50.

[0054] The photovoltaic panel assembly 5 is provided to convert solar energy into electrical energy, wherein the fixed photovoltaic panel 50 is connected to the controller 4 via the pins 501 at the bottom, and the connection slot 500 is provided to plug in the movable photovoltaic panel 51 .

[0055] Furthermore, a plurality of latches 510 are provided on one side of the movable photovoltaic panel 51, and a plurality of slots 511 are provided on the other side of the movable photovoltaic panel 51. The width of the latches 510 corresponds to the width of the slots 511 and the width of the connecting groove 500. The movable photovoltaic panel 51 is plug-fitted with the fixed photovoltaic panel 50 and fixedly connected by screws, and the movable photovoltaic panels 51 are plug-fitted with the latches 510 and fixedly connected by screws.

[0056] Secondly, a movable photovoltaic panel 51 is provided to increase the contact area with solar energy and increase the conversion power. The plug 510 with electrical transmission characteristics cooperates with the slot 511 to realize the mortise and tenon structure plug-in cooperation between the movable photovoltaic panel 51 and the fixed photovoltaic panel 50 and connect them through screws, making the installation more stable.

[0057] It should be noted that a top cover 9 with a sealing function is provided on the top of the insulating box 1, and a handle 90 is symmetrically provided on the upper surface of the top cover 9. The width of the top cover 9 corresponds to the width of the insulating box 1, and the top cover 9 is fixedly connected to the insulating box 1 by screws.

[0058] Specifically, the top cover 9 is provided to fix and restrict the internal equipment for easy carrying outside, and the handle 90 is convenient for hand-carrying.

[0059] In the utility model, a groove 15 is provided on the outer side of the insulating box body 1, and universal wheels 6 which can rotate flexibly are provided around the bottom of the insulating box body 1.

[0060] Among them, a drawer box 7 is provided in the drawer slot 15, and the width of the drawer box 7 corresponds to the width of the drawer slot 15. A storage groove 70 is opened on the upper surface of the drawer box 7, and the width of the storage groove 70 corresponds to the width of the movable photovoltaic panel 51 and the width of the fixed photovoltaic panel 50. A handle 71 is provided on the right side of the drawer box 7, and the handle 71 is fixedly connected to the drawer box 7 by screws.

[0061] In the present invention, a drawer box 7 is provided so that the device can store the photovoltaic panel assembly 5 under the action of the storage groove 70 when the device is not in operation, and the handle 71 facilitates the drawing and pushing of the drawer box 7 as a whole.

[0062] When using a photovoltaic energy conversion device of the present embodiment, the user first fixes the universal wheel 6 to the bottom of the insulating box 1 by screws, then places the inverter 2 at the front end of the insulating box 1 through the fixing groove 10, and then fixes the battery 3 at the rear end of the insulating box 1 through the fixing groove 10 and electrically connects it to the inverter 2, then fixes the blower 8 between the inverter 2 and the battery 3 and to the right side of the insulating box 1, places the controller 4 on the top of the battery 3 and electrically connects it, and at the same time is flush with the top of the insulating box 1 through the fixing groove 10, then installs the fixed photovoltaic panel 50 on the top of the controller 4, and finally plugs and installs the movable photovoltaic panel 51 on both sides of the fixed photovoltaic panel 50;

[0063] When using the device outside, turn on the switch 21 to operate the device, so that the external solar energy is converted into electrical energy through the fixed photovoltaic panel 50, and is transmitted to the inside of the battery 3 through the controller 4 under the cooperation of the pin 501 and the port 40, and the internal charging and discharging of the battery 3 are limited under the cooperation of the controller 4. Through the electrical connection between the battery 3 and the inverter 2, the electrical energy on the socket 20 is converted into different power. When the external plug is connected to the socket 20, different electrical appliances can be used according to the plug-in cooperation of different plugs, and the heat generated by the internal equipment is dissipated through the fan 80 during operation. Under the protection of the insulating box 1, not only the internal electronics are protected from collision, but also from electricity. When it is not in working state, the photovoltaic panel assembly 5 is disassembled and placed in the storage slot 70, and stored through the drawer slot 15, and then the top cover 9 is placed on the top of the insulating box 1 and covered tightly.

Claims

1. A photovoltaic energy conversion device, comprising an insulating box (1) for fixing an internal structure and for protection, an inverter (2) for regulating power voltage is arranged near the front end of the insulating box (1), a battery (3) for storing electric energy is arranged near the rear end of the insulating box (1), and a controller (4) for preventing the battery (3) from being overcharged or over-discharged is arranged on the top of the battery (3), characterized in that: The top of the insulating box (1) is provided with a combinable photovoltaic panel assembly (5) for converting solar energy into electrical energy, the inside of the insulating box (1) is provided with a blower (8) near the right end, the outside of the insulating box (1) is provided with a drawer groove (15), and the bottom of the insulating box (1) is provided with flexibly rotatable universal wheels (6) around the periphery.

2. A photovoltaic energy conversion device according to claim 1, characterized in that: The front end of the rectangular insulating box (1) is provided with an interface slot (12) for passing an electric wire, the front end of the insulating box (1) is provided with a display slot (11) near the top, the right outer surface of the insulating box (1) is provided with an air inlet (13), the air inlet (13) is provided with a first protective net (130), the left outer surface of the insulating box (1) is provided with an exhaust port (14), the exhaust port (14) is provided with a second protective net (140), the universal wheel (6) is fixedly connected to the bottom of the insulating box (1) by screws, and the top of the insulating box (1) is provided with a fixing slot (10).

3. A photovoltaic energy conversion device according to claim 2, characterized in that: The inverter (2) is fixedly connected to the front end of the insulating box (1) by means of screws. A socket (20) is provided at the front end of the inverter (2). The width of the socket (20) corresponds to the width of the interface slot (12). A switch (21) for controlling the opening and closing of the device is provided near the top of the front end of the inverter (2). A signal light (22) for displaying the internal power storage status is provided on the right side of the switch (21). The positions of the switch (21) and the signal light (22) correspond to the position of the display slot (11).

4. A photovoltaic energy conversion device according to claim 3, characterized in that: The blower (8) is fixedly connected to the insulating box (1) by screws, a fan (80) is provided in the middle of the blower (8), the fan (80) is fixedly connected to the blower (8) by screws, the storage battery (3) is fixedly connected to the rear end of the insulating box (1) by screws, and the terminal post at the front end of the storage battery (3) is electrically connected to the terminal post at the rear end of the inverter (2) by a wire.

5. A photovoltaic energy conversion device according to claim 4, characterized in that: The terminal post at the bottom of the controller (4) is electrically connected to the terminal post at the top of the storage battery (3) via a wire; the width of the controller (4) corresponds to the width of the fixing slot (10), and the controller (4) is plugged into and matched with the insulating box (1) via the fixing slot (10); and ports (40) for receiving electric energy are symmetrically provided on the top of the controller (4).

6. A photovoltaic energy conversion device according to claim 1, characterized in that: The photovoltaic panel assembly (5) comprises a fixed photovoltaic panel (50) and movable photovoltaic panels (51) movably plugged in at both sides; pins (501) for transmitting electric energy are symmetrically arranged at the bottom of the fixed photovoltaic panel (50); the width of the pins (501) matches the width of the port (40) and is plugged in with the controller (4); and a plurality of connection grooves (500) are symmetrically arranged at both sides of the fixed photovoltaic panel (50).

7. A photovoltaic energy conversion device according to claim 6, characterized in that: A plurality of latches (510) are provided on one side of the movable photovoltaic panel (51), and a plurality of slots (511) are provided on the other side of the movable photovoltaic panel (51); the width of the latches (510) corresponds to the width of the slots (511) and the width of the connection groove (500); the movable photovoltaic panel (51) and the fixed photovoltaic panel (50) are plug-fitted and fixedly connected by screws; and the movable photovoltaic panels (51) are plug-fitted and fixedly connected by the latches (510) and the screws.

8. A photovoltaic energy conversion device according to claim 1, characterized in that: A top cover (9) with a sealing function is provided on the top of the insulating box (1); a handle (90) is symmetrically provided on the upper surface of the top cover (9); the width of the top cover (9) corresponds to the width of the insulating box (1); and the top cover (9) is fixedly connected to the insulating box (1) by screws.

9. A photovoltaic energy conversion device according to claim 1, characterized in that: A drawer box (7) is provided in the drawer slot (15), the width of the drawer box (7) corresponds to the width of the drawer slot (15), a storage slot (70) is provided on the upper surface of the drawer box (7), the width of the storage slot (70) corresponds to the width of the movable photovoltaic panel (51) and the width of the fixed photovoltaic panel (50), and a handle (71) is provided on the right side of the drawer box (7), and the handle (71) is fixedly connected to the drawer box (7) by screws.

Images