Sealing structure of stainless steel motor junction box

Abstract

The utility model relates to the technical field of junction box equipment, and discloses a stainless steel motor junction box sealing structure, which comprises a junction box main body, a cover plate and a bottom plate, arc-shaped grooves are formed in the two sides of the junction box body, baffles are welded to the arc-shaped grooves, a sealing plate is arranged at the top end of the junction box body, an inner groove is formed in the sealing plate, a threaded groove is formed in the top end of the junction box body, and a threading hole is formed in the side face of the junction box body; the cover plate covers the junction box main body, the bottom of the cover plate is provided with a base, a sealing strip is embedded and fixed on the base, the cover plate is in threaded connection with a fixing bolt, and the fixing bolt penetrates through the cover plate and extends into a threaded groove of the junction box main body; prying seams are formed in the four sides of the side face of the cover plate. The motor junction box has a rapid and reliable sealing effect, the waterproof and dustproof performance of the motor junction box is enhanced, and the convenience of operation and the simplicity of later maintenance are ensured at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of junction box devices, and particularly relates to a sealing structure for a stainless steel motor junction box. Background Technique

[0002] The junction box is one of the electrical auxiliary tools that play a role in protecting and connecting wires. When the line is relatively long, the junction box is used as a transition. The wires are connected to the junction box, and different wires are connected in the junction box, playing the role of protecting and connecting the wires. However, due to the improvement of people's requirements for product quality, ordinary motor junction boxes are already difficult to meet the needs, especially in terms of waterproof performance. Many motor junction boxes on the market do not have good waterproof performance, resulting in a short service life.

[0003] For example, the authorized number CN218633207U discloses a sealed junction box, belonging to the technical field of electrical protection. It includes a junction box body, and the junction box body is provided with a receiving cavity for installing electrical components. The side wall of the receiving cavity is provided with an installation hole; a sealing block is arranged at the installation hole, and the sealing block is provided with a plurality of wire passing holes through which wires are tightly fitted and passed. This application has the effect of preventing acidic gases from entering the junction box through the gaps between the wires and causing the terminal to be corroded.

[0004] However, in the prior art, it is still impossible to completely prevent the penetration of moisture, especially in harsh environments or when exposed to a humid environment for a long time. Secondly, the existing sealing mechanism is complex to use, and the later maintenance cost is relatively high, increasing the work burden. Content of the Utility Model

[0005] The present utility model aims to at least solve one of the technical problems existing in the prior art. The purpose of the present utility model is to provide a sealing structure for a stainless steel motor junction box to solve the problems raised in the above background technique.

[0006] In the first aspect, the present application provides a sealing structure for a stainless steel motor junction box, adopting the following technical solution:

[0007] A sealing structure for a stainless steel motor junction box includes a junction box body, a cover plate and a bottom plate;

[0008] Arc-shaped grooves are opened on both sides of the junction box body, baffles are welded on the arc-shaped grooves, a sealing plate is arranged at the top of the junction box body, an inner groove is opened on the sealing plate, a threaded groove is opened at the top of the junction box body, and a wire passing hole is opened on the side of the junction box body;

[0009] The cover plate covers the junction box body. A base is provided at the bottom of the cover plate. A sealing strip is embedded and fixed on the base. A fixing bolt is threadedly connected to the cover plate. The fixing bolt penetrates through the cover plate and extends into the threaded groove of the junction box body;

[0010] Prying slots are provided on the four sides of the side surface of the cover plate;

[0011] Fixing holes are provided at the four corners of the bottom plate. Screws penetrate through the fixing holes. A positioning groove is provided on the bottom plate. The four corners of the bottom of the junction box body are in contact with the positioning groove.

[0012] By adopting the above technical solutions; by providing an inner groove in the sealing plate on the junction box body and cooperating with the sealing strip on the cover plate, a fast and reliable sealing effect is achieved. It not only provides a sealing layer but also enhances the waterproof and dustproof functions of the junction box body. At the same time, the prying slots provided on the side surface of the cover plate greatly facilitate the staff to open and close the cover plate, improve the convenience of operation, facilitate later maintenance, and will not cause the secondary sealing to fail; a bottom plate is provided at the bottom of the junction box body. Through the positioning groove on the bottom plate, the alignment and installation of the junction box body and the bottom plate are ensured, and the overall stability is guaranteed.

[0013] Optionally, a lock washer is provided between the threaded groove and the fixing bolt.

[0014] By adopting the above technical solutions; the lock washer is provided between the threaded groove and the fixing bolt to prevent the bolt from loosening. At the same time, after multiple disassembly and assembly, the lock washer can also maintain its anti-loosening performance.

[0015] Optionally, the inner groove is arranged in a stepped manner, and the sealing strip is provided with a stepped cross-section. Both the base and the sealing strip extend into the interior of the inner groove.

[0016] By adopting the above technical solutions; the stepped cross-section of the sealing strip matches the stepped arrangement of the inner groove, ensuring that the sealing strip can maintain good stability in the inner groove.

[0017] Optionally, a metal bushing is provided on the inner edge of the fixing hole.

[0018] By adopting the above technical solutions; the use of the metal bushing can reduce the risk of wear of the fixing hole due to long-term use.

[0019] Optionally, a positioning pin is provided on the positioning groove. The shape of the junction box body is rectangular, and an internal cavity is provided inside the junction box body. The positioning pin provided on the positioning groove is in contact with the four corners inside the junction box body.

[0020] By adopting the above technical solution, the positioning pin is set on the positioning groove, providing accurate positioning points for the junction box body and ensuring accurate docking with the bottom plate. At the same time, the built-in cavity inside the junction box body provides space for electrical components and wiring, helping to keep the wiring neat and orderly.

[0021] Optionally, a groove is provided on the inner side wall of the wire passing hole.

[0022] By adopting the above technical solution, the groove does not affect the normal wire passing and use of the wire passing hole.

[0023] Optionally, the number of the grooves is multiple, and a waterproof rubber ring and a sealing strip are sequentially embedded in the multiple grooves from outside to inside.

[0024] By adopting the above technical solution, a multi-layer sealing structure is formed by embedding the waterproof rubber ring and the sealing strip in the groove, effectively blocking the intrusion of moisture and impurities.

[0025] Optionally, the size of the wire passing hole is adapted to the size of the cable.

[0026] By adopting the above technical solution, the precise size setting of the wire passing hole ensures that the cable can pass through the hole tightly, thereby reducing the gap between the cable and the wire passing hole and helping to improve the overall sealing performance.

[0027] Optionally, the inner wall of the positioning groove is filled with sealant.

[0028] By adopting the above technical solution, the use of the sealant provides an additional sealing layer for the positioning groove, ensuring that no moisture or impurities can invade the inside of the junction box through the positioning groove when the junction box body is connected to the bottom plate.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: First, an inner groove is provided on the sealing plate of the junction box body, which cooperates with the sealing strip on the cover plate to form a sealing mechanism, effectively preventing the intrusion of moisture and impurities and improving the protection level of the junction box. At the same time, a pry seam is provided on the side of the cover plate, which is convenient for opening and closing the junction box body later without affecting the effect of secondary sealing. Second, a bottom plate is provided at the bottom of the junction box body, which cooperates with the positioning groove on the bottom plate to achieve precise alignment, facilitating the installation of the junction box body. At the same time, the bottom plate is quickly installed by screws, which is simple and efficient. In summary, the present application provides a fast and reliable sealing function, enhances the waterproof and dustproof performance of the motor junction box, and ensures the convenience of operation and the simplicity of later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the junction box body in the present utility model.

[0031] Figure 2 It is a schematic structural diagram of the cover plate in the present utility model.

[0032] Figure 3 It is a schematic structural diagram of the arc groove in the present utility model.

[0033] Figure 4 It is a schematic structural diagram of the bottom plate in the present utility model.

[0034] Reference numerals: 1, junction box main body; 101, arc groove; 110, threaded groove; 2, cover plate; 21, base; 3, bottom plate; 31, fixing hole; 4, sealing plate; 41, inner groove; 5, wire passing hole; 51, groove; 6, prying seam; 7, sealing strip; 8, fixing bolt; 9, screw; 10, positioning groove; 11, baffle; 12, positioning pin. Detailed implementation manners

[0035] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0036] As Figures 1 to 4 In an embodiment of the stainless - steel motor junction box sealing structure of the present utility model as shown, the stainless - steel motor junction box sealing structure of this embodiment includes a junction box main body 1, a cover plate 2 and a bottom plate 3;

[0037] Arc grooves 101 are provided on both sides of the junction box main body 1, and baffles 11 are welded on the arc grooves 101 to play a role in sealing and waterproofing. A sealing plate 4 is provided at the top of the junction box main body 1, an inner groove 41 is provided on the sealing plate 4, a threaded groove 110 is provided at the top of the junction box main body 1, and a wire passing hole 5 is provided on the side of the junction box main body 1;

[0038] The cover plate 2 covers the junction box main body 1. A base 21 is provided at the bottom of the cover plate 2, a sealing strip 7 is embedded and fixed on the base 21, and a fixing bolt 8 is threadedly connected to the cover plate 2. The fixing bolt 8 penetrates through the cover plate 2 and extends into the threaded groove 110 of the junction box main body 1;

[0039] Prying seams 6 are provided on the four sides of the side of the cover plate 2;

[0040] Fixing holes 31 are provided at the four corners of the bottom plate 3, screws 9 penetrate through the fixing holes 31, a positioning groove 10 is provided on the bottom plate 3, and the four corners at the bottom of the junction box main body 1 are in contact with the positioning groove 10.

[0041] Specifically, first, an inner groove 41 is formed on the sealing plate 4 of the junction box body 1. In cooperation with the sealing strip 7 on the cover plate 2, a sealing mechanism is formed to effectively prevent the intrusion of moisture and impurities, improve the protection level of the junction box. At the same time, a pry seam 6 is provided on the side of the cover plate 2, which is convenient for opening and closing the junction box body 1 in the later stage and does not affect the effect of secondary sealing. Secondly, a bottom plate 3 is provided at the bottom of the junction box body 1. Precise alignment is achieved in cooperation with the positioning groove 10 on the bottom plate 3, which is convenient for the installation of the junction box body 1. At the same time, the bottom plate 3 is quickly installed by screws 9, which is simple and efficient. To sum up, the present application provides a fast and reliable sealing function, enhances the waterproof and dustproof performance of the motor junction box, and ensures the convenience of operation and the simplicity of later maintenance.

[0042] As Figure 2 and Figure 4 shown, the inner groove 41 is arranged in a stepped manner, and the sealing strip 7 is arranged with a stepped cross-section. Both the base 21 and the sealing strip 7 extend into the inner groove 41. A positioning pin 12 is provided on the positioning groove 10. The shape of the junction box body 1 is rectangular, and an internal cavity is provided inside the junction box body 1. The positioning pin 12 provided on the positioning groove 10 contacts the four corners inside the junction box body 1, and the inner wall of the positioning groove 10 is filled with sealant.

[0043] Specifically, the stepped arrangement of the inner groove 41, in cooperation with the sealing strip 7 with the same stepped cross-section, provides a more refined and effective sealing effect. This arrangement enables the sealing strip 7 to provide uniform pressure at different depth positions of the inner groove 41, thereby achieving a better sealing effect. The positioning pin 12 is provided on the positioning groove 10 and contacts the four corners inside the junction box body 1, ensuring the precise alignment between the junction box body 1 and the bottom plate 3 and improving the assembly accuracy.

[0044] As Figure 3 shown, a lock washer is provided between the threaded groove 110 and the fixing bolt 8. A metal bushing is provided on the inner edge of the fixing hole 31. A groove 51 is formed on the inner side wall of the wire passing hole 5. The number of grooves 51 is multiple. A waterproof rubber ring and a sealing strip are sequentially embedded in the multiple grooves 51 from the outside to the inside. The size of the wire passing hole 5 is adapted to the size of the cable. The sealant filled in the inner wall of the positioning groove 10 provides an additional protective layer for the junction box, preventing moisture and impurities from invading the junction box body 1 through the positioning groove 10, and at the same time making the junction box body 1 stably installed on the bottom plate 3.

[0045] Furthermore, the anti-loosening washer arranged between the threaded groove 110 and the fixing bolt 8 effectively prevents the bolt from loosening due to vibration and other reasons during use, ensures the long-term close fit between the junction box cover and the main body, and improves the stability and safety of the entire junction box; the metal bushing arranged on the inner edge of the fixing hole 31 reduces the wear of the metal hole wall when the screws are repeatedly tightened and loosened, prolongs the service life of the fixing hole, and also helps to maintain the tightening force of the screw and avoid unstable connection caused by wear of the hole wall; multiple grooves 51 are opened on the inner wall of the threading hole 5, and the waterproof rubber rings and sealing strips are embedded in sequence from the outside to the inside, forming a multi-layer sealing structure, which not only improves the waterproof performance of the threading hole, but also provides additional protection for the cable passing through, preventing the cable from being eroded by external environmental factors; through the above-mentioned sealing and protection measures, the overall protection level of the junction box is improved, and it can adapt to the use requirements of more harsh environments, such as humid and dusty environments.

[0046] Implementation principle of the utility model: the junction box in the present application has good sealing performance; a sealing plate 4 is provided at the top of the junction box body 1, and the inner groove 41 on the sealing plate 4 cooperates with the sealing strip 7 embedded in the base 21 on the cover plate 2 to form a first sealing defense line, and at the same time, the stepped design of the inner groove 41 enables the sealing strip to closely cooperate with the inner groove, thereby achieving a reliable sealing effect;

[0047] Secondly, the grooves on the inner wall of the threading hole are arranged so that multiple grooves are sequentially embedded with waterproof rubber rings and sealing strips to form a multi-layer sealing structure. This design not only provides additional protection for the cable, but also significantly improves the sealing performance of the threading hole;

[0048] Finally, the positioning grooves 10 on the bottom plate 3 are in contact with the four corners of the bottom of the junction box body 1 through the positioning pins 12, ensuring the precise alignment and stable installation of the junction box body 1 and the bottom plate 3. The use of the positioning pins 12 improves the stability of the overall structure.

[0049] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sealing structure for a stainless steel motor junction box, characterized in that, It includes a junction box body (1), a cover plate (2) and a bottom plate (3); Arc-shaped grooves (101) are formed on both sides of the junction box body (1), baffles (11) are welded on the arc-shaped grooves (101), a sealing plate (4) is arranged at the top of the junction box body (1), an inner groove (41) is formed on the sealing plate (4), a threaded groove (110) is formed at the top of the junction box body (1), and a wire passing hole (5) is formed on the side of the junction box body (1); The cover plate (2) covers the junction box body (1), a base (21) is arranged at the bottom of the cover plate (2), a sealing strip (7) is embedded and fixed on the base (21), a fixing bolt (8) is threadedly connected to the cover plate (2), and the fixing bolt (8) penetrates through the cover plate (2) and extends into the threaded groove (110) of the junction box body (1); Prying seams (6) are formed on the four sides of the side surface of the cover plate (2); Fixing holes (31) are formed at the four corners of the bottom plate (3), screws (9) penetrate through the fixing holes (31), a positioning groove (10) is formed on the bottom plate (3), and the four corners of the bottom of the junction box body (1) are in contact with the positioning groove (10).

2. The stainless steel motor terminal box sealing structure according to claim 1, characterized in that, A lock washer is arranged between the threaded groove (110) and the fixing bolt (8).

3. The stainless steel motor terminal box sealing structure according to claim 1, wherein, The inner groove (41) is arranged in a stepped manner, and the sealing strip (7) is arranged with a stepped cross-section, and both the base (21) and the sealing strip (7) extend into the interior of the inner groove (41).

4. The stainless steel motor terminal box sealing structure according to claim 1, wherein, A metal bushing is arranged on the inner edge of the fixing hole (31).

5. The stainless steel motor terminal box sealing structure according to claim 1, wherein, A positioning pin (12) is arranged on the positioning groove (10), the shape of the junction box body (1) is rectangular, and an internal cavity is arranged inside the junction box body (1), and the positioning pin (12) arranged on the positioning groove (10) is in contact with the four corners inside the junction box body (1).

6. The stainless steel motor terminal box sealing structure according to claim 1, characterized in that, A groove (51) is formed on the inner side wall of the wire passing hole (5).

7. The stainless steel motor terminal box sealing structure according to claim 6, wherein, The number of the grooves (51) is multiple, and a waterproof rubber ring and a sealing rubber strip are sequentially embedded in the multiple grooves (51) from outside to inside.

8. The stainless steel motor terminal box sealing structure according to claim 1, wherein The size of the wire passing hole (5) is adapted to the size of the cable.

9. The stainless steel motor terminal box sealing structure according to claim 1, characterized in that, The inner wall of the positioning groove (10) is filled with sealant.

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