Modular quick earthing device on an electrical cabinet closing plate

Abstract

The application discloses a modular quick grounding device on an electrical cabinet sealing plate, which comprises an electrical cabinet including an outer shell body, cabinet stand columns installed at the edges of the outer shell body, and a sealing plate installed on the right side of the outer shell body; and a grounding module including a base, a limiting assembly arranged on the inner side of the left end of the base, an inner cover plate arranged at the front end of the limiting assembly, an outer cover plate arranged on the rear side of the base, and the inner cover plate and the outer cover plate fixed to the base through rivets. The grounding module is installed on the inner side of the sealing plate, so that the appearance of the sealing plate is flat, the problem that the height of the claw pad exceeds the surface of the door plate can be avoided, the left and right cabinets can be seamlessly connected, and when the electrical cabinet needs to be maintained, only one person is needed to operate, which is simpler and easier than the mode that two persons are needed to cooperate to connect soft wires after welding the stud, and the purpose of quickly installing and dismounting the sealing plate is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical cabinet, in particular to a modular quick grounding device on the sealing plate of an electrical cabinet. BACKGROUND

[0002] The conventional electrical cabinet shell is made of 1-2mm metal plate, which can form a closed structure to prevent human body from contacting the internal live parts, and the sealing plate can be removed and moved away when installation and maintenance are needed. All metal shells must be continuously conductive to prevent accidental electrification of the shell from being directly transmitted to the human body, which is a national mandatory standard. The general removable sealing plate grounding has two ways: 1. A stud is welded on the back of the sealing plate, and a soft wire is connected between the welded stud and the cabinet, and then the cabinet has a unified bus grounding inside; 2. A grounding claw pad is installed on the outside of the sealing plate, and the claw pad can pierce the paint surface of the sealing plate under the pressure of the screw during work, and the sealing plate is transmitted to the cabinet through the claw pad and the screw.

[0003] At present, these two ways have some shortcomings: the first welding stud way, firstly, the installation and removal operation is relatively troublesome, and two people are needed to cooperate, one person holds or lifts the sealing plate, and the other person installs the soft wire and welds the stud on the back. Secondly, when the sealing plate is removed, the maintenance personnel often cannot estimate that there is a soft wire connection behind the sealing plate, and directly move away the sealing plate, resulting in the soft wire being pulled off. The second claw pad connection, the depth of the boss can only be made to 5mm for the 1.5mm thick sealing plate, and the sum of the height of the claw pad and the height of the screw head exceeds the depth of the boss of the sealing plate, resulting in uneven appearance and affecting the seamless butt joint of the left and right cabinets. Secondly, some paints are relatively thick and hard, especially epoxy powder paint, and the claw pad sometimes cannot pierce the paint surface, resulting in grounding failure. Finally, the screws and claw pads are placed randomly on the ground after being removed, and are easy to be lost. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above and / or existing problems in the prior art, the present application is proposed.

[0006] Therefore, the technical problem to be solved by the present application is that the conventional grounding method is relatively cumbersome, time-consuming and laborious when the sealing plate needs to be removed, and the wire is easy to be pulled off.

[0007] To solve the above technical problems, the application provides the following technical scheme: a modular quick grounding device on an electrical cabinet sealing plate, comprising an electrical cabinet including an outer shell, cabinet columns are installed at the edges of the outer shell, and a sealing plate is installed on the right side of the outer shell; and a grounding module including a base, a limiting assembly is arranged on the inner side of the left end of the base, an inner cover plate is arranged at the front end of the limiting assembly, an outer cover plate is arranged on the rear side of the base, and the inner cover plate and the outer cover plate are fixed to the base by rivets.

[0008] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, the limiting assembly comprises sliding clamping plates, and two sliding clamping plates are arranged, and the two sliding clamping plates are clamped on the front and rear sides of the base, and a waist drum-shaped spring is clamped between the two sliding clamping plates.

[0009] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, four corners of the two sliding clamping plates are provided with clamping teeth, and the front and rear sides of the left end of the base are provided with clamping grooves matched with the clamping teeth, and the two sliding clamping plates are clamped in the two clamping grooves respectively.

[0010] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, a circular clamping hole is arranged at the center of each of the two sliding clamping plates, and clamping heads matched with the circular clamping holes are arranged at the front and rear ends of the waist drum-shaped spring.

[0011] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, long circular holes are arranged on the inner cover plate and the outer cover plate, and the diameter of the long circular hole is greater than the diameter of the waist drum-shaped spring.

[0012] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, a boss is arranged at the upper end of the sealing plate and close to the front and rear sides of the electrical cabinet, and two groups of bosses are arranged, and each group of bosses is provided with three bosses.

[0013] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, a through hole is arranged in one of the bosses close to the outer side, and threaded holes are arranged in the two bosses close to the inner side.

[0014] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate, a second threaded hole matched with the through hole is arranged at the corresponding position of the cabinet column, a first disc head screw is installed in the through hole, and the threaded end of the first disc head screw penetrates through the grounding module and is threadedly connected with the second threaded hole.

[0015] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate of the present application, wherein: two threaded holes are screwed with second pan head screws, and the tail of the second pan head screw is screwed with a nut, and the grounding module is fixed on the sealing plate through the second pan head screw and the nut.

[0016] As a preferred scheme of the modular quick grounding device on the electrical cabinet sealing plate of the present application, wherein: the first pan head screw and the second pan head screw are embedded in the boss.

[0017] The present application has the following advantages: the grounding module is installed on the inner side of the sealing plate, which not only makes the appearance of the sealing plate flat, but also avoids the problem of the height of the claw pad exceeding the surface of the door plate, seamlessly connects with the left and right cabinets, and only one person is needed to operate when the electrical cabinet needs to be maintained, which is simpler and easier than the method of connecting the soft wire by two people after welding the stud, achieves the purpose of quickly installing and dismounting the sealing plate, and solves the problem of the soft wire being accidentally pulled off or the claw pad not meeting the conduction requirement when the sealing plate is dismounted. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0019] Figure 1 It is a perspective view of the electrical cabinet of the present application.

[0020] Figure 2 It is a perspective view of the sealing plate and the grounding module of the present application.

[0021] Figure 3 It is a perspective view of the grounding module of the present application. Figure 2 It is an enlarged schematic view of the structure at A in the present application.

[0022] Figure 4 It is a perspective view of the sealing plate of the present application.

[0023] Figure 5 It is a perspective view of the grounding module of the present application.

[0024] Figure 6 It is an exploded view of the grounding module of the present application.

[0025] Figure 7 It is a sectional view of the connection between the cabinet stand, the sealing plate and the grounding module of the present application. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0028] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive with other embodiments.

[0029] Embodiment 1

[0030] Reference Figures 1-4 For the first embodiment of the present application, the embodiment provides a modular quick grounding device on the sealing plate of an electrical cabinet, which comprises an electrical cabinet 100 and a grounding module 200. The electrical cabinet 100 comprises an outer shell 101, cabinet columns 102 are installed at the edges of the outer shell 101, a sealing plate 103 is installed on the right side of the outer shell 101, and the grounding module 200 is installed on the upper side of the sealing plate 103 and inside the outer shell 101, and is fixed by screws, which can meet the shell grounding requirements, and no longer needs to weld studs and connect soft wires.

[0031] The upper end of the sealing plate 103 and the front and rear sides of the electrical cabinet 100 are provided with bosses 103a, and the bosses 103a are provided in two groups, each group of bosses 103a is provided with three bosses, a through hole 103a-1 is formed in the boss 103a close to the outer side, the through hole 103a-1 is a round hole, and threaded holes 103a-2 are formed in the two bosses 103a close to the inner side, the threaded holes 103a-2 are M4 threaded preformed holes. The sealing plate 103 is painted as a whole, and finally the threaded holes 103a-2 are processed, at this time only the M4 internal threads are exposed, the two bosses with threaded holes 103a-2 and the boss with the through hole 103a-1 form a group, which is used to install the modular grounding device and is symmetrical on the sealing plate 103.

[0032] Embodiment 2

[0033] Reference Figures 1-4For the second embodiment of the application, the embodiment provides a modular quick grounding device on the sealing plate of an electrical cabinet. A second threaded hole 102a is formed in the cabinet column 102 corresponding to the through hole 103a-1, a first pan head screw 103b is installed in the through hole 103a-1, and the threaded end of the first pan head screw 103b penetrates the grounding module 200 and is threadedly connected with the second threaded hole 102a. Two threaded holes 103a-2 are threadedly connected with a second pan head screw 103c, and the tail of the second pan head screw 103c is threadedly connected with a nut 103c-1. The grounding module 200 is fixed on the sealing plate 103 through the second pan head screw 103c and the nut 103c-1;

[0034] The second pan head screw 103c is installed from the outer side of the sealing plate 103, is rotated to be fastened, and locks the grounding module 200 through the nut 103c-1 on the inner side of the sealing plate 103. There are two groups on the left and right of the sealing plate 103, and there are four groups in total. The second pan head screw 103c is in conductive contact with the sealing plate 103 through threads, is used for installing the grounding module 200 to realize the conductive function, the sealing plate 103 is installed on the cabinet column 102, is fastened by the first pan head screw 103b, so that the sealing plate 103 and the cabinet column 102 are fixed. The cabinet column 102 is provided with a second threaded hole 102a of M4, and the first pan head screw 103b can realize the conductive function. The first pan head screw 103b has realized the conductive contact with the grounding module 200 and the conductive contact with the sealing plate 103, achieves the purpose of shell protection grounding, and the outer surface is flat. The screw does not protrude from the surface of the cabinet column 102, avoids the problem that the height of the claw pad exceeds the surface of the door plate, and can be seamlessly connected with the left and right cabinets.

[0035] Embodiment 3

[0036] Reference Figures 5-7 For the third embodiment of the application, the embodiment provides a modular quick grounding device on the sealing plate of an electrical cabinet. The modular quick grounding device comprises a grounding module 200. The grounding module 200 comprises a base 201. The inner side of the left end of the base 201 is provided with a limiting assembly 202. The front end of the limiting assembly 202 is provided with an inner cover plate 203. The rear side of the base 201 is provided with an outer cover plate 204. The inner cover plate 203 and the outer cover plate 204 are fixed to the base 201 through rivets 205.

[0037] The limiting assembly 202 comprises sliding clamping plates 202a, and two sliding clamping plates 202a are arranged on the front and back of the base 201 respectively, a waist drum spring 202b is clamped between the two sliding clamping plates 202a, a circular clamping hole 202a-2 is arranged at the center of each of the two sliding clamping plates 202a, clamping heads that are adapted to the circular clamping hole 202a-2 are arranged at the front and back ends of the waist drum spring 202b, the clamping heads at the front and back ends of the waist drum spring 202b are elastic, the outer diameter is 7.9 mm in normal state, the inner hole diameter of the circular clamping hole 202a-2 is 7.4 mm, the waist drum spring 202b and the two sliding clamping plates 202a are installed together through interference fit, the diameters of the two ends of the waist drum spring 202b are compressed to 7.4 mm, and the waist drum spring 202b will not be loosened without external force, and the screw will not naturally fall off under the action of gravity.

[0038] Clamping teeth 202a-1 are arranged at the four corners of the two sliding clamping plates 202a, clamping grooves 201a that are adapted to the clamping teeth 202a-1 are arranged on the front and back of the left end of the base 201, the two sliding clamping plates 202a are clamped in the two clamping grooves 201a respectively, the size of the clamping groove 201a is 12 mm, the size of the clamping tooth 202a-1 is 10 mm, a gap of 1 mm is reserved between the base 201 and the sliding clamping plate 202a on the left and right sides, so that the sliding clamping plate 202a has an adjustment distance of 1 mm when moving left and right, and the sliding clamping plate 202a can slide in the base 201 without obstacles.

[0039] The inner cover plate 203 and the outer cover plate 204 are installed and locked by rivets 205 to ensure that they will not be separated, and long circular holes 204a are arranged on the inner cover plate 203 and the outer cover plate 204, the diameter of the clamping head of the waist drum spring 202b is 7.4 mm, the size of the long circular hole 204a in the horizontal direction is 6.5 mm, which can cover the front end of the waist drum spring 202b, so that the waist drum spring 202b is locked to prevent falling off, at the same time, the sliding clamping plate 202a and the waist drum spring 202b can still slide left and right together, which can ensure that the center distance error can be adjusted when the screw is installed, and there is a gap of 0.2 mm between the sliding clamping plate 202a and the inner cover plate 203 to ensure that the sliding clamping plate 202a can slide without obstacles.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A modular fast grounding device on an electrical cabinet sealing plate, characterized in that: include, An electrical cabinet (100) includes an outer casing (101), with cabinet uprights (102) installed around the edges of the outer casing (101), and a sealing plate (103) installed on the right side of the outer casing (101); and, The grounding module (200) includes a base (201), a limiting component (202) is provided on the inner side of the left end of the base (201), an inner cover plate (203) is provided at the front end of the limiting component (202), and an outer cover plate (204) is provided on the rear side of the base (201). The inner cover plate (203) and the outer cover plate (204) are fixed to the base (201) by rivets (205). After the sealing plate (103) is painted, two threaded holes (103a-2) are machined for compensation. At this time, the internal threads are exposed metal. The internal threads of the two threaded holes (103a-2) are connected to the second pan head screw (103c). The second pan head screw (103c) makes conductive contact with the sealing plate (103) through the thread and is used to install the grounding module (200) to achieve the conductive function. The limiting component (202) includes a sliding plate (202a), and there are two sliding plates (202a). The two sliding plates (202a) are respectively engaged on the front and rear sides of the base (201), and a waist drum-shaped spring (202b) is engaged between the two sliding plates (202a). Each of the two sliding plates (202a) has a locking tooth (202a-1) at its four corners. The base (201) has a slot (201a) on both the front and rear sides of its left end that matches the locking tooth (202a-1). The two sliding plates (202a) are respectively engaged in the two slots (201a). A 1mm gap is maintained on each side between the base (201) and the sliding plate (202a); Both the inner cover plate (203) and the outer cover plate (204) are provided with elongated holes (204a) to ensure that the waist drum-shaped spring (202b) is locked. At the same time, the sliding plate (202a) and the waist drum-shaped spring (202b) can still slide left and right together.

2. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 1, characterized in that: Both of the sliding plates (202a) have a circular locking hole (202a-2) at their center, and the front and rear ends of the drum-shaped spring (202b) are provided with locking heads that are compatible with the circular locking holes (202a-2).

3. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 1 or 2, characterized in that: The diameter of the oblong hole (204a) is larger than the diameter of the drum-shaped spring (202b).

4. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 1, characterized in that: The upper end of the sealing plate (103) and the front and rear sides near the electrical cabinet (100) are provided with bosses (103a). There are two sets of bosses (103a), and each set of bosses (103a) has three bosses (103a).

5. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 4, characterized in that: A through hole (103a-1) is provided in one of the outer bosses (103a), and threaded holes (103a-2) are provided in the two inner bosses (103a).

6. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 5, characterized in that: The cabinet column (102) has a second threaded hole (102a) that matches the through hole (103a-1). A first pan head screw (103b) is installed in the through hole (103a-1), and the stud end of the first pan head screw (103b) passes through the grounding module (200) and is threadedly connected to the second threaded hole (102a).

7. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 6, characterized in that: The tail of the second pan head screw (103c) is threaded with a nut (103c-1), and the grounding module (200) is fixed to the sealing plate (103) by the second pan head screw (103c) and the nut (103c-1).

8. The modular fast grounding device on the electrical cabinet sealing plate as described in claim 7, characterized in that: The first pan head screw (103b) and the second pan head screw (103c) are both embedded in the boss (103a).

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