WO2020042671A1

WO2020042671A1 - Reinforcing structure of portable power station

Info

Publication number: WO2020042671A1
Application number: PCT/CN2019/087049
Authority: WO
Inventors: 马忠东
Original assignee: 苏州圆能动力科技有限公司
Priority date: 2018-08-31
Filing date: 2019-05-15
Publication date: 2020-03-05
Also published as: CN108923299A

Abstract

The present invention relates to a reinforcing structure of a portable power station. The reinforcing structure comprises a casing and an electric energy generation apparatus accommodated inside the casing, wherein a bottom portion of the casing is composed of a base, a bottom portion of the base is provided with bottom supporting legs, a support is provided inside the casing, and the electric energy generation apparatus is connected to the base and/or the bottom supporting legs via the support. According to the present invention, the metal support connected to the legs and a handle outside the casing is provided inside the casing, such that the strength of the structure of the power station with a plastic casing can be greatly improved with less metal materials, thus having the advantages of being light weight, and having a high strength and low costs.

Description

Description Invention Name: Reinforced Structure of Portable Power Station Technical Field

[0001] The present invention relates to the technical field of portable power stations, and relates to a portable energy storage power source (Mobi le Power) with built-in storage batteries, or various portable generator sets, and particularly to an inverter generator (Inverter generator). Reinforced structure of the power station.

Background technique

[0002] Portable power stations mainly include two categories of products: energy storage power supplies and generator sets. The energy storage power supply has a built-in battery, an inverter, and an electronic control system, which can charge the battery from mains, solar energy or a generator. The inverter can convert the DC power of the battery into AC power for various electrical appliances. DC output interface for various voltages. The generator set is mainly composed of an engine, a generator and an electronic control system. It can convert the chemical energy of fuel oil into electrical energy, and has a variety of AC and DC output interfaces. Portable power stations have a wide range of applications, such as: home or unit backup power, field operations, emergency power, disaster relief, outdoor life and travel, yacht and vehicle self-provided power, mobile communication base stations and many other occasions.

[0003] In order to reduce the weight of the power station and improve portability, the casing of a portable power station is usually made of a less dense material such as plastic. The casing is lighter in weight but weaker in strength. Commonly used portable generators weighing about 2kW weigh more than 20kg. If they are portable power storage batteries with built-in 2kW lead-acid batteries, the weight may reach more than 40kg. At this time, the strength of the casing of the portable power station will be difficult to bear. The invention designs a support structure of a metal skeleton for a portable power station, which greatly increases the structural strength of the portable power station with a smaller amount of metal materials, and meets the requirements of the overall structure strength of the mobile power station during work, handling, dumping and storage. It has the advantages of light weight, high strength and low cost.

Summary of invention

technical problem

Problem solution

Technical solutions

[0004] The object of the present invention is to overcome the problems existing in the prior art and provide an enhanced structure of a portable power station. [0005] In order to achieve the above technical objectives and achieve the above technical effects, the present invention is achieved by the following technical solutions:

[0006] A reinforced structure of a portable power station includes a casing and a power generation device housed in the casing. The bottom of the casing is formed by a base, and a bottom support foot is provided at the bottom of the base. A bracket is provided inside the casing, and the electric power generating device is connected to the base and / or the bottom support leg via the bracket.

[0007] Further, a handle device is provided outside the casing, and the power generation device and the handle device are connected through a bracket.

[0008] Further, the bracket is composed of an upper bracket, a lower bracket, a connection screw, and a liner, and the upper bracket and the lower bracket are connected by a connection screw and a liner, and the connection screw passes through the upper bracket The corresponding mounting holes are connected to the nuts on the lower bracket through the liner, and the two end faces of the liner are respectively attached to the mating surfaces on the upper bracket and the lower bracket to perform positioning and support functions to form a metal skeleton. .

[0009] Further, the electric energy generating device is connected to the bottom support foot stand through a lower bracket, the handle device is connected to the upper support stand, and the lower support is connected to the base and / or the bottom support foot stand. The bottom support feet are connected.

[0010] Further, the bottom support feet and the bottom support feet are coaxially connected with each other by screw fasteners

[0011] Further, a side supporting leg is provided on a side of the cabinet, and the bracket is connected to the cabinet and / or the side supporting leg.

[0012] Further, the side support feet are composed of an upper support foot stand, an upper support foot stand, a lower support foot stand, and a lower support foot stand, and the upper support foot stand and the lower support foot stand protrude from the chassis. On the outer surface, the upper support leg and the upper bracket are connected by an upper support leg, and the lower support leg and the lower support are connected by a lower support leg.

[0013] Further, the electric energy generating device includes a battery, an inverter, and an electric control system, and charges the battery through a commercial power source, a solar energy, or a generator, and the inverter and the electric control system process the direct current of the battery Output AC and / or DC power through the output panel.

[0014] Further, the electric energy generating device includes an engine, a generator, and an electronic control system. The generator outputs electric energy under the driving of the engine, and outputs alternating current or / and direct current through an output panel under the control of the electronic control system. [0015] Further, the casing and its base are made of non-metal material, and the bracket is made of metal material.

The beneficial effects of the invention

Beneficial effect

[0016] The present invention greatly increases the structural strength of a power station with a plastic casing by using less metal materials by providing a metal bracket connected to the casing external feet and the handle inside the casing, while maintaining a relatively light weight, It satisfies the requirements for the structural strength of the whole machine when the mobile power station is working, handling, laying down and storing, and has the advantages of light weight, high strength and low cost.

Brief description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a perspective view of a portable power station according to the present invention;

[0018] FIG. 2 is a front elevational view of a portable power station of the present invention;

[0019] FIG. 3 is a cross-sectional view of the portable power station of the present invention, taken along the outside of the left case;

[0020] FIG. 4 is a cross-sectional view of the portable power station of the present invention, taken along the center horizontal plane of the roller;

[0021] FIG. 5 is a rear cross-sectional view of the portable power station of the present invention;

[0022] FIG. 6 is a left perspective view of the portable power station of the present invention after the casing is removed;

[0023] FIG. 7 is a right rear perspective view of the portable power station of the present invention after the casing is removed;

[0024] FIG. 8 is a perspective view of the portable power station of the present invention after the left case, the maintenance cover, the protective cover and the charging input panel are removed;

9 is an exploded view of the present invention applied to a mobile power source;

[0026] FIG. 10 is an exploded view after the casing is removed according to the present invention.

[0027] Description of the symbols in the figure: 1. Case, 101. Left case, 1011. Maintenance cover, 1012. Protective cover, 102. Right case, 103. Front panel, 1031. Case air inlet, 104 Rear panel, 1041. Case air outlet cover, 1042. Case air outlet, 105. Handle cover, 106. Base, 2. Bracket, 201. Upper bracket, 202. Lower bracket, 203. Connection screw, 204. Liner Tube, 3. side support foot, 301. upper support foot, 302. upper support foot, 303. lower support foot, 304. lower support foot, 305. bolt, 4. bottom support foot, 401. bottom support Tripod, 402. Bottom support foot, 403. Bolt, 5. Handle unit, 501. Handle A, 502. Handle B, 503. Handle C, 6. Inverter, 7. Controller, 8. Battery, 9 .Battery platen, 10. Output panel, 11. Charge input panel, 12. Roller device, 1 3. Pull rod device. Invention Examples

Embodiments of the invention

[0028] The present invention will be described in detail below with reference to the drawings and embodiments.

[0029] As shown in FIG. 1 to FIG. 10, the portable power station of the present invention mainly includes two categories of products: a mobile power source and a generating unit. For a mobile power source, the power generating device of a portable power station mainly includes a battery 8, an inverter 6, an electric control system, and the like. The battery 8 can be charged from mains power, solar energy, or a generator. The inverter 6 can charge the battery 8 The DC power is converted into AC power and output through the output panel 10. Of course, a DC output interface of various voltages can also be configured on the output panel. For a generator set, the power generation device of a portable power station mainly includes an engine, a generator, and an electronic control system. The generator outputs electrical energy under the driving of the engine, which can convert the chemical energy of fuel into electrical energy. An inverter is included. The inverter can convert the intermediate frequency AC power output by the generator into a voltage-stabilized power frequency AC power at various speeds. The output panel 10 has various AC and DC output interfaces. For the generator set, an oil injection port is also provided on the top of the casing; for mobile power, a charge input panel 11 is also provided on the top of the casing.

[0030] As shown in FIG. 3, FIG. 4, FIG. 5, and FIG. 6, the portable power station is mainly composed of an electric energy generating device, an output panel 10, and a casing 1. The casing 1 is usually made of a non-metal material such as plastic. The basic outline is designed to take the shape of a cuboid. The electric power generating device is housed in the casing 1. The output panel 10 is disposed at the front of the casing 1. The bottom of the casing 1 is a base 106. The base 106 forms and closes the bottom of the casing 1. The base 106 is also made of non-metal such as plastic. Made of materials. At the bottom of the base 106, a convex bottom support foot 4 02 is provided, which is mainly used to contact the ground. The bottom support leg 402 is connected to the bottom support leg 401 in the cabinet. A bracket 2 is provided inside the cabinet 1. As shown in FIG. 10, the bracket 2 is mainly composed of an upper bracket 201, a lower bracket 202, a connection screw 203, and a liner 204. The upper bracket 201 and the lower bracket 202 are connected by a connection screw 203 and The liner 204 is connected, and the specific connection method is as follows: the connection screw 203 passes through the mounting hole on the upper bracket 201, and then passes through the liner 204, and then connects with the nut on the lower bracket 202. The two end faces of the liner 204 are respectively connected with The mating surfaces on the upper bracket 201 and the lower bracket 202 are adhered to each other to play a positioning and supporting role to form a metal skeleton.

[0031] As shown in FIG. 4, FIG. 5, FIG. 6 and FIG. 7, the heavier components such as the engine or the battery included in the power generation device inside the casing are connected to the lower bracket 202 of the bracket 2, and the lower bracket 202 is connected to the machine. The bottom support feet 402 outside the casing are connected through the bottom support feet 401, that is, the heavier components in the power generation device and the bottom support feet 402 are connected through the lower bracket 202. Because the heaviest engine, battery and other components in the power station are in phase with the bracket 2 Even then, most of the weight of the power station will be directly transmitted to the bottom support foot 40 2 through the bracket 2 directly. As shown in FIG. 3 and FIG. 4, in this embodiment, four bottom support feet 402 are provided at the bottom of the base 106, and correspondingly there are four bottom support feet 401. The bottom support feet 402 are located at the bottom of the cabinet for The bosses that are in direct contact with the ground are finally subjected to the pressure generated by all the weight of the power station. Therefore, all the weight of the power station will be borne by the bottom support foot 402, the bottom support foot 401 and the bracket 2, which can prevent the plastic base 106 from being stressed, and ensure that the cabinet will not be damaged by its own weight when the power station is placed vertically.

[0032] As shown in FIG. 3 and FIG. 5, the bottom support leg 402 and the lower support 202 are connected by a bottom support leg 401. Here, the bottom support leg 402 and the bottom support leg 401 may be directly connected, or The base 106 may be connected between the two. When directly connected, a "large mounting hole" is set in the area where the bottom support foot 402 is installed on the base 106 to ensure that there is a certain gap between the base 106 and the bottom support foot 402 and the bottom support foot 401. This prevents them from contacting or squeezing each other with the base 106.

[0033] As shown in FIG. 1, FIG. 5 and FIG. 7, in addition to the bottom support foot provided at the bottom of the base 106, the present invention is also provided with a side support foot 3 on the side of the casing 1, and the side support foot 3 is also connected to the bracket. 2 are connected. The side supporting feet 3 are mainly composed of an upper supporting foot 301, an upper supporting foot 302, a lower supporting foot 303, and a lower supporting foot 304. The upper supporting foot 302 and the lower supporting foot 304 are outward from the side of the cabinet 1. Protruding. Similar to the role of the bottom support foot 402, when the power station is down, the upper support foot 302 and the lower support foot 304 are on the side of the cabinet for contacting the ground to bear the weight of the power station. Similar to the structure of the bottom support foot, the upper support foot 302 and the upper bracket 201 are connected through an upper support foot 301, and the lower support foot 304 and the lower support 202 are connected through a lower support foot 303.

[0034] In this way, when the power station is laid down, most of the weight of the power station will be directly transmitted to the upper support foot 302 and the lower support foot 304 through the bracket 2 directly. As shown in FIGS. 1 and 7, in this embodiment, two upper support feet 302 and two lower support feet 304 are provided on the side of the casing, and correspondingly, there are two upper support feet 301 and two lower support feet.架 303。 303. The upper support foot 302 and the lower support foot 304 are bosses on the side of the cabinet for direct contact with the ground. All the weight of the power station will be composed of the upper support foot 301, the upper support foot 302, and the lower support foot 3 03, lower The support feet 304 and the bracket 2 bear, which can protect the side of the plastic casing 1 from being stressed, and ensure that the casing will not be damaged by its own weight when the power station is laid down.

[0035] Since the bracket 2, the bottom support leg 401, the upper support leg 301, and the lower support leg 303 can be made of metal materials such as steel, the strength is high, and the load bearing capacity is sufficient. As shown in FIG. 6 and FIG. 10, the bracket 2 is a hollow structure, The metal material is used in a small amount and is therefore light in weight.

[0036] As shown in FIG. 4 and FIG. 5, the bottom support leg 402 is located outside the mounting hole of the cabinet 1, and the bottom support leg 401 connected to it is located inside the mounting hole of the casing 1. The bottom support leg 402 of the present invention It is coaxially connected with the bottom support leg 401 by bolts 403. That is, the mounting hole on the bottom support leg 402 and the mounting hole on the bottom support leg 401 are coaxially connected. The specific connection method is as follows: Through the mounting holes on the bottom support foot 402, then through the mounting holes on the bottom of the cabinet, and then through the mounting holes on the bottom support feet 401 through threaded connections, this connection structure can ensure the bottom support on the outside of the cabinet The foot stand 402 and the inner bottom support foot stand 401 are connected to each other nearest. When the power station is placed vertically, the pressure action line on the bottom support leg 401 passes through the center of the bottom support leg 402, and no torque is generated. Therefore, the cabinet mounting holes that are in contact with the bottom support leg 402 and the bottom support leg 401 The area will only be subjected to pressure, and the casing in the stressed area will hardly be subjected to bending moments and no bending stress will be generated. The strength requirements can be easily met by measures such as local reinforcement through the mounting holes at the bottom of the casing.

[0037] The same is true for the side support feet. As shown in FIGS. 4 and 5, the upper support foot stand 302 / lower support foot stand 304 and the upper support foot stand 301 / lower support foot stand 303 of the present invention are also mounted on the bolt 305. The lower and the coaxial connection are as follows: bolts 305 pass through the mounting holes on the upper support foot 302 / lower support foot 304, then through the mounting holes on the side of the cabinet, and then through the screw holes and the upper support foot 301 / The lower support feet 303 are connected together. When the power station is tilted to the side, the pressure action line on the upper support foot 301 / lower support foot 303 passes through the center of the upper support foot 302 / lower support foot 304, and no torque is generated. Measures such as local reinforcement of the mounting holes on the side of the shell can easily meet the strength requirements.

[0038] Therefore, through the above technical solution, the present invention can greatly improve the structural strength of a portable power station with a plastic casing, and maintain a relatively light weight.

[0039] It should be particularly pointed out that the bottom support foot 402, the upper support foot 302 and the lower support foot 304 can be made into an integrated structure with the cabinet 1, or can be made as separate parts installed outside the cabinet, here It is preferable to make a separate part, so that the material of the foot table does not have to be the same as that of the casing 1, and a more suitable material such as rubber can be selected as the supporting foot pad. In addition, the key point of the present invention is that the bracket 2 is connected to the support foot stand, and the support foot stand and the support foot stand are preferably directly connected, but the present invention does not strictly limit the specific connection manner between the support foot stand and the support foot stand. The connection point A between the support foot and the casing and the connection point B between the support foot and the casing may not be at the same point, that is, they may be eccentric structures with different axes. But between connection point A and connection point B The distance should not be too large. The farther the distance is, the greater the bending stress and deformation of the plastic casing between the supporting foot and the supporting foot. The distance between the supporting foot and the supporting foot can withstand the plastic case. The bending stress and deformation caused by the weight of the power station shall prevail. In order to increase this distance, it may be necessary to locally strengthen the casing between the supporting feet and the supporting feet to bear the additional bending stress. However, the distance between the connection point A and the connection point B should not be greater than 1/2 of the width of the power station, and the distance should preferably not be greater than 1/3 of the width of the power station, otherwise the bending stress between the support stand and the support foot is too large. Even the reinforced plastic casing cannot bear it.

[0040] Although this embodiment only provides support feet on the two sides of the bottom and side of the cabinet, as required, support feet can also be provided on the other four sides of the cabinet. In this way, the upper and lower sides of the power station The bottom, left, right, front, and back 6 are supported by support feet. No matter which side the power station is facing down to, and when subjected to external forces in all directions, the support feet and brackets can play a comprehensive role in the enclosure. Protective effects.

[0041] As shown in FIG. 1, FIG. 2 and FIG. 8, in this embodiment, a handle device 5 is provided on the top of the cabinet 1. The handle is located outside the cabinet 1. The handle device 5 is connected to the upper bracket 201 of the bracket 2. The heavy parts such as the engine or battery included in the electric power generating device inside the casing are connected to the lower bracket 202 of the bracket 2. Since the upper bracket 201 and the lower bracket 202 are connected by the connecting screw 203 and the liner 204, the electric energy generating device It is connected with the handle device 5 through a bracket 2. In this way, when the operator lifts the handle, the weight of the power station is fully borne by the bracket 2 and the casing 1 will not be stressed, thereby preventing the casing 1 from being damaged by the tensile force caused by the power station's own gravity.

[0042] As shown in FIG. 9, the cabinet 1 of this embodiment is mainly composed of a left cabinet 101, a right cabinet 102, a front panel 103, a rear panel 104, a handle cover 105, and a base 106. These cabinet components are all Non-metallic materials such as plastic. The aforementioned upper support foot 302 and lower support foot 304 are both disposed on the right case 102. As mentioned above, in order to avoid the right case 102 from being stressed, the upper support foot 302 and the lower support foot 304 and the power generation device They are connected by a bracket 2. The base 106 of this embodiment constitutes the bottom of the cabinet 1 alone. Of course, the base 106 can also be made into two halves according to requirements. One half is molded with the left casing 101 and the other half is molded with the right casing 102. The handle device 5 is composed of a handle A, a handle B, and a handle C. The handle A is connected to the upper bracket 201. The specific connection method is as follows: The screw on the handle A is connected to the threaded hole on the middle top of the upper bracket 201 through the handle cover 105. The handle B and the handle C are also connected to the upper bracket 201. The specific connection method is as follows: The screws on the handle B / handle C are connected to the front and rear top screw holes of the upper bracket 201 through the casing. [0043] As shown in FIG. 3, FIG. 4, and FIG. 6, the mobile power supply has a built-in battery 8. The battery 8 has +/- pole terminals. The battery 8 is placed in a frame structure formed by the lower bracket 202. The battery 8 is near the left. A battery pressure plate 9 is provided on the outside of the casing 101. After removing the battery pressure plate 9, the battery 8 can be taken out of the frame structure of the lower bracket 202, and the battery 8 can be taken out of the casing 1 by opening the maintenance cover 1011. Convenience.

[0044] As shown in FIGS. 1 and 9, in this example, a handle bar device 13 is further provided on the handle cover 105, a roller device is provided on the base 106, and the power station can be easily moved by turning the rod through the roller. As shown in FIG. 4, the roller in the roller device 12 is connected to a metal roller bracket on the outside of the roller through a roller shaft, and one end of the roller shaft is connected to the base 106 through a screw on the inside of the base to ensure the structural strength of the roller device 12 and the Connection strength.

[0045] In summary, the present invention greatly increases the structural strength of a power station with a plastic casing by using less metal materials by providing a metal bracket connected to the casing outer feet and the handle inside the casing, while maintaining the strength of the power station with a plastic casing. Lighter weight, with obvious technical advantages.

Principle of the Invention

[0047] In the present invention, a metal bracket 2 is provided inside the casing 1. The handle device 5 on the top of the casing 1, the bottom support legs 4 on the bottom of the casing 1, and the side support legs 3 on the side of the casing are directly connected to the bracket 2, which is portable. Heavier parts such as the battery 8 or the engine of the power station are directly connected to the bracket 2. In this way, most of the weight of the portable power station is directly transmitted to the support legs outside the casing 1 through the bracket 2. When the generator is working, the vibration generated by the engine is also directly transmitted to the supporting feet outside the casing 1 by the metal bracket 2 and then transmitted to the ground by the corresponding supporting feet, so the vibration will not affect the machine made of plastic. Shell 1. When the portable power station is placed vertically, the bottom support feet 4 at the bottom of the cabinet 1 support all the weight of the portable power station through a metal bracket 2. The bottom cabinet 1 is outside the force transmission path, and the bottom cabinet 1 is hardly affected. force. When the portable power station is laid down, the side support feet 3 on the side of the casing 1 also support all the weight of the portable power station through the metal bracket 2. The side casing 1 is outside the force transmission path, and the side casing 1 is almost free . When the portable power station is carried by the handle device 5 on the top of the cabinet 1, the handle device 5 bears all the weight of the portable power station through the metal bracket 2. The entire cabinet 1 is outside the force transmission path. The plastic material cabinet 1 does not Will withstand any tension.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Within the spirit and principle of the present invention Any modification, equivalent replacement, improvement, etc. shall be included in the protection scope of the present invention.

Claims

Claim

[Claim 1] A reinforced structure of a portable power station, comprising a casing (1) and an electric energy generating device contained in the casing (1), characterized in that the bottom of the casing (1) is composed of A base (106) is formed, a bottom supporting foot (402) is provided at the bottom of the base (106), a bracket (2) is provided inside the casing (1), the electric power generating device and the base (106) ) And / or the bottom support foot (402) are connected through the bracket (2).

[Claim 2] The reinforced structure of the portable power station according to claim 1, wherein a handle device (5) is provided outside the casing (1), and one of the power generation device and the handle device (5) is provided. They are connected by brackets (2).

[Claim 3] The reinforced structure of the portable power station according to claim 2, characterized in that the bracket ( ² ) is composed of an upper bracket ( ² 01), a lower bracket ( ² 0), a connecting screw ( ² 03), and a lining. The upper bracket (201) and the lower bracket (202) are connected by a connecting screw (203) and a liner (204), and the connecting screw (203) passes through the upper bracket (201). The corresponding mounting holes on the upper side and the nuts on the lower bracket (202) are connected through the liner (204), and the two end surfaces of the liner (204) are respectively connected to the upper bracket (201) and the lower bracket (202). The mating surfaces on the surface fit together to play a positioning and supporting role to form a metal skeleton

[Claim 4] The reinforced structure of a portable power station according to claim 3, characterized in that the power generation device and the bottom support foot (402) are connected through a lower bracket (202), and the handle device (5) The upper bracket (201) is connected, and the lower bracket (202) is connected to the base (106) and / or the bottom support foot (402) through a bottom support foot (401).

[Claim 5] The reinforced structure of the portable power station according to claim 4, characterized in that the bottom support foot stand (402) and the bottom support foot stand (401) are the same up and down through threaded fasteners. Shaft connection.

[Claim 6] The reinforced structure of the portable power station according to claim 3, characterized in that, the side of the casing (1) is provided with side support legs (3), the bracket (2) and the casing ( 1) Connect with side support feet (3).

[Claim 7] The reinforced structure of the portable power station according to claim 6, characterized in that the side support feet (3) are composed of an upper support foot stand (301), an upper support foot stand (302), and a lower support foot. The frame (303) and the lower support foot (304) are composed of the upper support foot (302) and the lower support foot (304) which are protruded from the outer surface of the casing (1), and the upper support foot ( 30 2) The upper support (201) is connected by an upper support foot (301), and the lower support foot (304) and the lower support (202) are connected by a lower support foot (303)

[Claim 8] The reinforced structure of the portable power station according to claim 1 or 4, characterized in that the electric energy generating device comprises a battery (8), an inverter (6), and an electric control system, and passes the mains power The battery (8) is charged by solar energy or a generator. The inverter (6) and the electronic control system process the DC power of the battery (8) and output AC power and / or DC power through the output panel (10).

[Claim 9] The reinforced structure of a portable power station according to claim 1 or 4, wherein the electric energy generating device comprises an engine, a generator, and an electronic control system, and the generator outputs electric energy under the driving of the engine Under the control of the electronic control system, output AC power and / or DC power through the output panel (10).

[Claim 10] The reinforced structure of a portable power station according to claim 1 or 3, characterized in that the casing (1) and its base (106) are made of non-metal material, and the bracket (2) is made of metal Material.