A multi-point centralized grounding device and a multi-point centralized grounding system

Abstract

The present invention provides a multi-point centralized grounding device and a multi-point centralized grounding system, which relate to the technical field of vehicle-mounted electrical grounding. The multi-point centralized grounding device includes a grounding body, a grounding ring and a plurality of wiring terminals. The grounding ring is used to be arranged on a grounding surface, and a grounding opening is provided on the grounding ring. The grounding body and the grounding ring are detachably connected, and the bottom of the grounding body extends into the grounding opening. A plurality of wiring terminals are detachably connected to both sides of the grounding body and are in electrical contact with the grounding body. Compared with the prior art, the multi-point centralized grounding device provided by the present invention can improve the accuracy of electrical control, has a good grounding effect, and is highly safe. At the same time, the grounding circuit is simple, the assembly efficiency is high, and the power consumption to the ground can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of on-vehicle electrical appliance grounding, and more particularly, to a multi-point centralized grounding device and a multi-point centralized grounding system. Background Art

[0002] The traditional grounding method for on-vehicle electrical appliances is to directly use bolts or studs welded to the vehicle body frame. This method has low control accuracy, poor grounding effect, and low safety. When electrical appliances are used in complex environments and require high-precision control, higher technical requirements for grounding safety and protection are put forward.

[0003] In addition, the existing grounding methods are mostly single-wire grounding. For multiple electrical appliances on the vehicle body, multiple ground wires need to be set up and repeatedly connected or welded to the vehicle body frame, making the grounding circuit very complex. The assembly process is complicated during vehicle assembly, reducing the assembly efficiency. And connecting multiple lines results in a large power consumption to the ground.

[0004] In view of this, it is particularly important to design and manufacture a multi-point centralized grounding device that can improve the accuracy of electrical appliance control, has a good grounding effect, high safety, simple grounding circuit, high assembly efficiency, and can reduce the power consumption to the ground. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-point centralized grounding device that can improve the accuracy of electrical appliance control, has a good grounding effect, high safety, simple grounding circuit, high assembly efficiency, and can reduce the power consumption to the ground.

[0006] Another purpose of the present invention is to provide a multi-point centralized grounding system that can improve the accuracy of electrical appliance control, has a good grounding effect, high safety, simple grounding circuit, high assembly efficiency, and can reduce the power consumption to the ground.

[0007] The present invention is implemented by the following technical solutions.

[0008] A multi-point centralized grounding device includes a grounding main body, a grounding surrounding member, and a plurality of terminal connectors. The grounding surrounding member is used to be arranged on the grounding surface, and a grounding opening is formed on the grounding surrounding member. The grounding main body is detachably connected to the grounding surrounding member, and the bottom of the grounding main body extends into the grounding opening for electrical contact with the grounding surface. The plurality of terminal connectors are detachably connected to both sides of the grounding main body and are in electrical contact with the grounding main body.

[0009] Further, the grounding main body includes an integrally arranged terminal connection part and a plug-in part. The plug-in part is arranged at the bottom of the terminal connection part and extends into the grounding opening. The shape of the plug-in part matches the shape of the grounding opening.

[0010] Further, a top support plate is provided on the top of the grounding body. A first bolt is provided on the top support plate. A threaded hole matching the first bolt is provided on the grounding ring member. The first bolt passes through the top support plate and the grounding body in sequence and extends into the threaded hole, so that the top support plate, the grounding body and the grounding ring member are connected as a whole.

[0011] Further, a positioning rib is provided on one side of the top support plate close to the grounding body. A positioning groove is provided on the top of the grounding body. The positioning rib cooperates with the positioning groove.

[0012] Further, support brackets are also provided on both sides of the grounding body. The support brackets are detachably connected to the top support plate and have a plurality of support pieces. The plurality of support pieces correspond to the plurality of wiring terminals one by one, and the support piece abuts against the incoming line end of the corresponding wiring terminal to limit the incoming line end of the wiring terminal.

[0013] Further, the middle part of the support bracket is spaced from the top support plate and is provided with an adjustment hole. A second bolt is provided in the adjustment hole. The second bolt passes through the middle part of the support bracket and the top support plate in sequence and is connected to an adjustment nut provided on the top support plate, for adjusting the distance between the middle part of the support bracket and the top support plate.

[0014] Further, the multi-point centralized grounding device further includes a first dust cover and a second dust cover. The second dust cover is arranged around the grounding ring member. The first dust cover covers the second dust cover and forms an accommodation inner cavity. The grounding body, the grounding ring member and the plurality of wiring terminals are all accommodated in the accommodation inner cavity.

[0015] Further, a plurality of wiring ports are provided between the first dust cover and the second dust cover. The plurality of wiring ports correspond to the plurality of wiring terminals one by one.

[0016] Further, a first stepped sealing edge is provided at the edge of the first dust cover, and a second stepped sealing edge is provided at the edge of the second dust cover. The first stepped sealing edge cooperates with the second stepped sealing edge.

[0017] A multi-point centralized grounding system includes a plurality of grounding wires, a fixed grounding pipe and a multi-point centralized grounding device. The multi-point centralized grounding device includes a grounding body, a grounding ring member and a plurality of wiring terminals. The grounding ring member is used to be arranged on the grounding surface, and a grounding opening is provided on the grounding ring member. The grounding body is detachably connected to the grounding ring member, and the bottom of the grounding body extends into the grounding opening for electrical contact with the grounding surface. The plurality of wiring terminals are detachably connected to both sides of the grounding body and are in electrical contact with the grounding body. The plurality of grounding wires are connected to the plurality of wiring terminals one by one. The fixed grounding pipe has a grounding surface, and the grounding ring member is arranged on the grounding surface.

[0018] The present invention has the following beneficial effects:

[0019] A multi-point centralized grounding device provided by the present invention arranges a grounding embracing member on the grounding surface. The grounding main body is detachably connected to the grounding embracing member, and the bottom of the grounding main body extends into a grounding opening. At the same time, a plurality of wiring terminals are detachably connected to both sides of the grounding main body and are in electrical contact with the grounding main body, realizing the electrical connection between the wiring terminals and the grounding surface. During actual use, multiple grounding wire bundles can be connected to the grounding ends of multiple electrical appliances, and multiple grounding wires are respectively connected to multiple wiring terminals. The wiring terminals are in electrical contact with the grounding main body, and the grounding main body is in electrical contact with the grounding surface, thereby realizing the safe grounding of multiple electrical appliances. Through multiple wiring terminals, the accuracy of electrical appliance grounding can be improved. At the same time, grounding through the same grounding main body can greatly reduce the power consumption to the ground. Compared with the prior art, the multi-point centralized grounding device provided by the present invention can improve the accuracy of electrical appliance control, has a good grounding effect, high safety, simple grounding lines, high assembly efficiency, and can reduce the power consumption to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Structural schematic diagram of the multi-point centralized grounding device from the first perspective provided by the first embodiment of the present invention;

[0022] Figure 2 Cross-sectional view of the multi-point centralized grounding device provided by the first embodiment of the present invention;

[0023] Figure 3 Structural schematic diagram of the multi-point centralized grounding device from the second perspective provided by the first embodiment of the present invention;

[0024] Figure 4 Overall exploded structural schematic diagram of the multi-point centralized grounding device provided by the first embodiment of the present invention;

[0025] Figure 5 Partial exploded structural schematic diagram of the multi-point centralized grounding device provided by the first embodiment of the present invention;

[0026] Figure 6 Overall exploded structural schematic diagram of the multi-point centralized grounding device provided by the second embodiment of the present invention;

[0027] Figure 7Schematic diagram of the multi-point centralized grounding device provided for the second embodiment of the present invention;

[0028] Figure 8 Cross-sectional view of the multi-point centralized grounding device provided for the second embodiment of the present invention;

[0029] Figure 9 For Figure 8 Partial enlarged schematic view of IX in;

[0030] Figure 10 For Figure 8 Partial enlarged schematic view of X in;

[0031] Figure 11 For Figure 6 Schematic diagram of the structure of the second dust cover in;

[0032] Figure 12 Schematic diagram of the structure of the multi-point centralized grounding system provided for the third embodiment of the present invention.

[0033] Icon: 100 - multi-point centralized grounding device; 110 - grounding main body; 111 - terminal connection part; 113 - insertion part; 115 - positioning groove; 130 - grounding surrounding part; 131 - grounding opening; 150 - wiring terminal; 160 - top support plate; 161 - first bolt; 163 - positioning rib; 170 - support bracket; 171 - second bolt; 173 - adjusting nut; 175 - bracket gasket; 180 - first dust cover; 181 - wiring port; 183 - first stepped sealing edge; 190 - second dust cover; 191 - relief opening; 193 - second stepped sealing edge; 195 - relief gap; 197 - ventilation hole; 200 - multi-point centralized grounding system; 210 - grounding wire; 230 - fixed grounding pipe. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0036] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the features in the following embodiments can be combined with each other.

[0040] First Embodiment

[0041] Referring to Figures 1 to 5 , this embodiment provides a multi-point centralized grounding device 100, including a grounding main body 110, a grounding surrounding member 130, and a plurality of wiring terminals 150. The grounding surrounding member 130 is used to be arranged on the grounding surface, and a grounding opening 131 is formed on the grounding surrounding member 130. The grounding main body 110 is detachably connected to the grounding surrounding member 130, and the bottom of the grounding main body 110 extends into the grounding opening 131 for electrical contact with the grounding surface. The plurality of wiring terminals 150 are detachably connected to both sides of the grounding main body 110 and are in electrical contact with the grounding main body 110.

[0042] The grounding protection of the metal shell of high-voltage electrical appliances serves two purposes. On the one hand, it provides safety protection, and on the other hand, it shields external interference. The fixed grounding part must be made of a material with good electrical conductivity. In this embodiment, the grounding ring part 130 is arranged on a fixed grounding pipe 230 and is electrically connected to the fixed grounding pipe 230. The fixed grounding pipe 230, which is the fixed grounding part, is the grounding pipe on the vehicle body, and the upper part of the fixed grounding pipe 230 has a grounding surface. Specifically, the grounding ring part 130 is welded to the fixed grounding pipe 230. Of course, the grounding ring part 130 can also be detachably arranged on the fixed grounding pipe 230 through connecting parts such as bolts. Any fixing method that can achieve the electrical connection between the grounding ring part 130 and the fixed grounding pipe 230 is within the protection scope of the present invention.

[0043] For the convenience of welding, the grounding ring part 130 and the fixed grounding pipe 230 are made of the same material. In this embodiment, both the grounding ring part 130 and the fixed grounding pipe 230 are made of steel, which facilitates the welding of the grounding ring part 130 to the fixed grounding pipe 230. The grounding main body 110 is the main part of the multi-point centralized grounding of electrical appliances. Materials with excellent electrical conductivity and as large a contact surface as possible are selected to meet the fast and smooth conductive path, such as silver, copper, aluminum, iron, etc. Specific limitations are not made here.

[0044] The grounding main body 110 includes a terminal connection part 111 and a plug-in part 113 that are integrally arranged. The plug-in part 113 is arranged at the bottom of the terminal connection part 111 and extends into the grounding opening 131. The shape of the plug-in part 113 matches the shape of the grounding opening 131. Specifically, the terminal connection part 111 is in the shape of a rectangular body, the plug-in part 113 is in the shape of a waist-shaped cylinder, and the major axis of the plug-in part 113 is smaller than the major axis of the terminal connection part 111. The grounding opening 131 is a waist-shaped hole and matches the plug-in part 113, so that the plug-in part 113 can be smoothly inserted into the grounding opening 131 and contact the grounding surface.

[0045] In this embodiment, there are 4 wiring terminals 150. The 4 wiring terminals 150 are arranged in pairs on the opposite side walls of the terminal connection part 111. Specifically, two mounting through holes are opened on the side walls of the terminal connection part 111. The incoming line directions of the two wiring terminals 150 on the same side wall of the terminal connection part 111 are opposite. The 4 wiring terminals 150 are connected to the terminal connection part 111 through two positioning bolts. Each positioning bolt passes through the terminal connection part 111 and fixes two wiring terminals 150. Of course, the number of wiring terminals 150 here can also be 6 or 8, etc. Correspondingly, the size of the terminal connection part 111 is adjusted accordingly, and its specific structure is not described in detail here.

[0046] A top support plate 160 is provided at the top of the grounding body 110, a first bolt 161 is provided on the top support plate 160, a threaded hole matching with the first bolt 161 is provided on the grounding ring 130, and the first bolt 161 passes through the top support plate 160 and the grounding body 110 in sequence and extends into the threaded hole, so that the first bolt 161 connects the top support plate 160, the grounding body 110 and the grounding ring 130 as a whole. Specifically, the first bolts 161 are provided at both ends of the top support plate 160, respectively, and the top support plate 160, the grounding body 110 and the grounding ring 130 are connected as a whole through the two first bolts 161.

[0047] In this embodiment, the first bolt 161 is a countersunk bolt so that the upper surface of the top support plate 160 can be flush. A positioning ridge 163 is provided on the side of the top support plate 160 close to the grounding body 110, and a positioning groove 115 is provided on the top of the grounding body 110, and the positioning ridge 163 cooperates with the positioning groove 115. By providing the positioning ridge 163 and the positioning groove 115, the top support plate 160 and the grounding body 110 can be positioned with each other before installing the first bolt 161, which is very convenient. In addition, the positioning ridge 163 of the top support plate 160 fixes the grounding body 110 with good conductivity in the middle, and the raised part not only reduces the weight of the product but also increases the strength of the support and the reliability of the bolt fixing.

[0048] In this embodiment, support brackets 170 are further provided on both sides of the grounding body 110. The support brackets 170 are detachably connected to the top support plate 160 and have a plurality of support pieces, which correspond one-to-one to the plurality of wiring terminals 150, and the support pieces are supported on the corresponding wire-inlet ends of the wiring terminals 150, so as to limit the wire-inlet ends of the wiring terminals 150. Specifically, the support brackets 170 are in the shape of a Chinese character "几", and two support pieces are provided on each support bracket 170, and the two support pieces are respectively provided at the two ends of the support bracket 170, so as to limit the positions of two adjacent wiring terminals 150.

[0049] The middle part of the support bracket 170 is spaced apart from the top support plate 160 and is provided with an adjustment hole, in which a second bolt 171 is provided. The second bolt 171 passes through the middle part of the support bracket 170 and the top support plate 160 in sequence and is connected with an adjustment nut 173 provided on the top support plate 160, so as to adjust the distance between the middle part of the support bracket 170 and the top support plate 160. Specifically, a large-sized gasket is provided between the adjustment nut 173 and the top support plate 160, and a bracket gasket 175 is provided in the middle part of the support bracket 170. The bracket gasket 175 is provided between the second bolt 171 and the middle surface of the support bracket 170, which can protect the support bracket 170 and strengthen the support rigidity of the support bracket 170.

[0050] During actual installation, the grounding wire 210 is installed into the grounding terminal. After the grounding wire 210 is installed, there will be gravity and bending stress. Under the action of a long time, the terminal may become loose, thereby affecting the contact area between the terminal and the upper body on both sides in the length direction. Therefore, it is necessary to support the part of the grounding terminal handle close to the grounding wire 210. Support brackets 170 are designed on the left and right sides. Grooves are left at both ends of the length direction of the grounding body 110 (i.e., between the left and right terminals) to connect to the bracket gasket 175 in the middle of the "X"-shaped support bracket 170 to enhance the support rigidity of the support bracket 170. At the same time, it can slide up and down to meet the support effect of different grounding terminal sizes. Specifically, when adjustment is needed, the distance between the bracket and the top support plate 160 is adjusted by rotating the adjustment nut 173, and then the position of the bracket is adjusted to adapt to different sizes of terminal blocks 150.

[0051] In summary, the present embodiment provides a multi-point centralized grounding device 100, in which the grounding ring 130 is arranged on the grounding surface, the grounding body 110 is detachably connected to the grounding ring 130, and the bottom of the grounding body 110 extends into the grounding opening 131, and at the same time, a plurality of wiring terminals 150 are detachably connected to both sides of the grounding body 110 and are in electrical contact with the grounding body 110, thereby realizing the electrical connection between the wiring terminals 150 and the grounding surface. In actual use, multiple grounding wires 210 can be connected to the grounding ends of multiple electrical appliances, and the multiple grounding wires 210 are respectively connected to multiple wiring terminals 150, and the wiring terminals 150 are in electrical contact with the grounding body 110, and the grounding body 110 is in electrical contact with the grounding surface, thereby realizing the safe grounding of multiple electrical appliances, and the accuracy of electrical grounding can be improved through multiple wiring terminals 150, and grounding through the same grounding body 110 can greatly reduce the amount of electrical energy consumed to the ground. Compared with the prior art, the multi-point centralized grounding device 100 provided by the present invention can improve the accuracy of electrical control, has good grounding effect and high safety, and at the same time has a simple grounding circuit, high assembly efficiency and can reduce the power consumption to the ground.

[0052] Second embodiment

[0053] This embodiment provides a multi-point centralized grounding device 100, whose basic structure, principle and technical effects are the same as those of the first embodiment. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment. Compared with the first embodiment, this embodiment adds a dustproof structure.

[0054] See also Figure 6 and Figure 7The present embodiment provides a multi-point centralized grounding device 100, including a grounding body 110, a grounding ring 130, a plurality of wiring terminals 150, a first dust cover 180 and a second dust cover 190. The grounding ring 130 is used to be set on a grounding surface, and a grounding opening 131 is provided on the grounding ring 130. The grounding body 110 is detachably connected to the grounding ring 130, and the bottom of the grounding body 110 extends into the grounding opening 131 for electrical contact with the grounding surface. The plurality of wiring terminals 150 are detachably connected to both sides of the grounding body 110 and are in electrical contact with the grounding body 110. The second dust cover 190 is arranged outside the grounding ring 130, and the first dust cover 180 is covered on the second dust cover 190 to form an accommodating inner cavity. The grounding body 110, the grounding ring 130 and the plurality of wiring terminals 150 are all accommodated in the accommodating inner cavity.

[0055] In this embodiment, a clearance opening 191 is provided at the bottom of the second dust cover 190, and the grounding ring 130 is accommodated in the clearance opening 191 and welded to the external fixed grounding tube 230. Specifically, the bottom of the second dust cover 190 abuts against the surface of the fixed grounding tube 230 and maintains a seal, preventing external impurities from entering the accommodating inner cavity through the gap at the bottom of the second dust cover 190.

[0056] In other preferred embodiments of the present invention, the bottom of the second dust cover 190 is coated with sealant, and the second dust cover 190 and the fixed grounding tube 230 are bonded together, so as to fix the second dust cover 190.

[0057] In this embodiment, a plurality of wiring ports 181 are provided between the first dust cover 180 and the second dust cover 190, and the plurality of wiring ports 181 correspond one to one with the plurality of wiring terminals 150. Specifically, two semicircular openings are provided at one end of the first dust cover 180, and two semicircular openings are provided at the same end of the second dust cover 190, and the two wiring ports 181 are formed by splicing. Similarly, two wiring ports 181 are also formed by splicing at the other end of the first dust cover 180 and the other end of the second dust cover 190.

[0058] A top support plate 160 is provided at the top of the grounding ring 130, a first bolt 161 is provided on the top support plate 160, a threaded hole matching with the first bolt 161 is provided on the grounding ring 130, and the first bolt 161 passes through the top support plate 160 and the grounding body 110 in sequence and extends into the threaded hole, so that the first bolt 161 connects the top support plate 160, the grounding body 110 and the grounding ring 130 as a whole. Specifically, the first bolts 161 are provided at both ends of the top support plate 160, respectively, and the top support plate 160, the grounding body 110 and the grounding ring 130 are connected as a whole through the two first bolts 161.

[0059] In this embodiment, support brackets 170 are further provided on both sides of the grounding body 110. The support brackets 170 are detachably connected to the top support plate 160 and have a plurality of support pieces. The plurality of support pieces correspond to the plurality of terminal blocks 150 one by one, and the support pieces abut against the incoming line ends of the corresponding terminal blocks 150 for limiting the incoming line ends of the terminal blocks 150. Specifically, the support brackets 170 are in a shape of 'Ji' (Chinese character for 'Ji'), and two support pieces are provided on each support bracket 170. The two support pieces are respectively arranged at both ends of the support bracket 170, so as to be able to limit two adjacent terminal blocks 150.

[0060] The middle part of the support bracket 170 is spaced from the top support plate 160 and is provided with an adjustment hole. A second bolt 171 is arranged in the adjustment hole. The second bolt 171 sequentially passes through the middle part of the support bracket 170, the top support plate 160 and the upper surface of the first dust cover 180 and is connected to an adjustment nut 173 arranged on the first dust cover 180 for adjusting the distance between the middle part of the support bracket 170 and the top support plate 160. A large-size gasket is further arranged between the adjustment nut 173 and the upper surface of the first dust cover 180 to prevent the first dust cover 180 from coming off.

[0061] In this embodiment, the first dust cover 180 is fixed by the second bolt 171. At the same time, the first dust cover 180 covers the second dust cover 190, thereby playing a role in fixing the second dust cover 190.

[0062] See Figure 9 , a first stepped sealing edge 183 is arranged at the edge of the first dust cover 180, and a second stepped sealing edge 193 is arranged at the edge of the second dust cover 190. The first stepped sealing edge 183 is matched with the second stepped sealing edge 193. By arranging the stepped sealing edge structure, it can effectively prevent external impurities, dust, etc. from entering the accommodation inner cavity, and at the same time make the contact edge beautiful and the closing stable and reliable.

[0063] In this embodiment, both the first dust cover 180 and the second dust cover 190 are plastic parts. At the same time, a sealing ring is arranged at the opening of the terminal block 150 of the first dust cover 180 and the second dust cover 190, which can further ensure the sealing effect.

[0064] See Figure 10 , the bottom size of the relief opening 191 of the second dust cover 190 is larger than the size of the grounding ring-shaped part 130, and the bottom of the side wall of the relief opening 191 has an inclined surface, so as to form a relief gap 195 between the second dust cover 190 and the grounding ring-shaped part 130 to avoid the protrusion and unevenness after the grounding ring-shaped part 130 is welded.

[0065] See Figure 11, a plurality of ventilation holes 197 are evenly arranged at the bottom of the second dust cover 190, and the diameter of each ventilation hole 197 is 2-3 mm, which can prevent the accumulation of water vapor in the accommodation cavity and avoid water accumulation in the accommodation cavity.

[0066] In summary, a multi-point centralized grounding device 100 provided in this embodiment arranges the grounding loop member 130 on the grounding surface. The grounding main body 110 is detachably connected to the grounding loop member 130, and the bottom of the grounding main body 110 extends into the grounding opening 131. At the same time, a plurality of wiring terminals 150 are detachably connected to both sides of the grounding main body 110 and are in electrical contact with the grounding main body 110, realizing the electrical connection between the wiring terminals 150 and the grounding surface. At the same time, a accommodation cavity is formed by the first dust cover 180 and the second dust cover 190, and components such as the grounding main body 110 are installed in the accommodation cavity, which can prevent the entry of dust particles and improve the service life of the product.

[0067] Third Embodiment

[0068] See Figure 12 , this embodiment provides a multi-point centralized grounding system 200, which includes a plurality of grounding wires 210, a fixed grounding pipe 230 and a multi-point centralized grounding device 100. The basic structure, principle, technical effects of the multi-point centralized grounding device 100 are the same as those of the second embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding content in the second embodiment.

[0069] The multi-point centralized grounding device 100 includes a grounding main body 110, a grounding loop member 130 and a plurality of wiring terminals 150. The grounding loop member 130 is used to be arranged on the grounding surface, and a grounding opening 131 is provided on the grounding loop member 130. The grounding main body 110 is detachably connected to the grounding loop member 130, and the bottom of the grounding main body 110 extends into the grounding opening 131 for electrical contact with the grounding surface. A plurality of wiring terminals 150 are detachably connected to both sides of the grounding main body 110 and are in electrical contact with the grounding main body 110. A plurality of grounding wires 210 are connected to the plurality of wiring terminals 150 one by one, and the fixed grounding pipe 230 has a grounding surface, and the grounding loop member 130 is arranged on the grounding surface.

[0070] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-point centralized grounding device, characterized in that, It includes a grounding body, a grounding surrounding member, and multiple wiring terminals. The grounding surrounding member is used to be arranged on the grounding surface, and a grounding opening is provided on the grounding surrounding member. The grounding body is detachably connected to the grounding surrounding member, and the bottom of the grounding body extends into the grounding opening for electrical contact with the grounding surface. The multiple wiring terminals are detachably connected to both sides of the grounding body and are in electrical contact with the grounding body; A top support plate is arranged at the top of the grounding body. A first bolt is arranged on the top support plate. A threaded hole matching the first bolt is provided on the grounding surrounding member. The first bolt sequentially passes through the top support plate and the grounding body and extends into the threaded hole, so that the first bolt, the top support plate, the grounding body, and the grounding surrounding member are connected as a whole. A positioning rib is arranged on one side of the top support plate close to the grounding body. A positioning groove is provided at the top of the grounding body. The positioning rib cooperates with the positioning groove; Support brackets are further arranged on both sides of the grounding body. The support brackets are detachably connected to the top support plate and have multiple support pieces. The multiple support pieces correspond to the multiple wiring terminals one by one, and the support piece abuts against the incoming wire end of the corresponding wiring terminal for limiting the incoming wire end of the wiring terminal.

2. The multi-point centralized grounding device according to claim 1, characterized in that, The grounding body includes a terminal connection part and a plug-in part integrally arranged. The plug-in part is arranged at the bottom of the terminal connection part and extends into the grounding opening. The shape of the plug-in part matches the shape of the grounding opening.

3. The multi-point centralized grounding device according to claim 1, characterized in that, The middle part of the support bracket is spaced from the top support plate and is provided with an adjustment hole. A second bolt is arranged in the adjustment hole. The second bolt sequentially passes through the middle part of the support bracket and the top support plate and is connected to an adjustment nut arranged on the top support plate for adjusting the distance between the middle part of the support bracket and the top support plate.

4. The multi-point centralized grounding device according to claim 1, characterized in that, The multi-point centralized grounding device further includes a first dust cover and a second dust cover. The second dust cover is arranged around the grounding surrounding member. The first dust cover covers the second dust cover to form a containing inner cavity. The grounding body, the grounding surrounding member, and the multiple wiring terminals are all contained in the containing inner cavity.

5. The multi-point centralized grounding device according to claim 4, wherein, Multiple wiring ports are provided between the first dust cover and the second dust cover. The multiple wiring ports correspond to the multiple wiring terminals one by one.

6. The multi-point centralized grounding device according to claim 4, characterized in that A first stepped sealing edge is arranged at the edge of the first dust cover. A second stepped sealing edge is arranged at the edge of the second dust cover. The first stepped sealing edge cooperates with the second stepped sealing edge.

7. A multi-point centralized grounding system, characterized in that, It includes multiple grounding wires, a fixed grounding pipe, and the multi-point centralized grounding device according to any one of claims 1-6. The multiple grounding wires are connected to the multiple wiring terminals one by one. The fixed grounding pipe has a grounding surface, and the grounding surrounding member is arranged on the grounding surface.

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