A load switch with a modular sealing device

Abstract

This application relates to the field of electrical equipment, specifically disclosing a load switch with a modular sealing device. The load switch includes a switch body comprising an upper housing, a lower housing, and a sealing frame. The upper or lower housing has a fixing groove for placing the sealing frame. The sealing frame includes a frame body and sealing strips connected to the top and bottom walls of the frame body. The frame body has an installation groove for placing the sealing strips. The sealing strips on both sides abut against the upper and lower housings respectively. The upper housing, lower housing, and sealing frame are detachably connected by fasteners passing through them. The load switch with a modular sealing device of this application has the advantage of facilitating parallel production, thereby improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of electrical equipment, and in particular to a load switch with a modular sealing device. Background Technology

[0002] A load switch is a type of switching device that falls between a circuit breaker and a disconnector. It has a simple arc-extinguishing device and can interrupt the rated load current and a certain overload current.

[0003] In the prior art, load switches consist of an upper housing and a lower housing arranged opposite to each other, and their inner cavities are filled with insulating gas. Therefore, a sealing strip is generally provided between the upper housing and the lower housing. The sealing strip is adhered to the surface of the upper housing or the lower housing by an adhesive, and the sealing strip is squeezed by the other housing to achieve the sealing effect.

[0004] However, the following problems exist in the production process: the sealing strip can only be installed after the shell has completely cooled and the paint has dried. Furthermore, the installed sealing strip requires multiple processes that cannot be set up in parallel, resulting in low production efficiency. Utility Model Content

[0005] To improve production efficiency, this application provides a load switch with a modular sealing device.

[0006] The load switch with a modular sealing device provided in this application adopts the following technical solution: A load switch with a modular sealing device includes a switch body, which includes an upper housing, a lower housing, and a sealing frame. The upper housing or the lower housing has a fixing groove for placing the sealing frame. The sealing frame includes a frame body and sealing strips connected to the top and bottom walls of the frame body. The frame body has an installation groove for placing the sealing strips. The sealing strips on both sides abut against the upper housing and the lower housing, respectively. The upper housing, the lower housing, and the sealing frame are detachably connected by fasteners passing through them.

[0007] By adopting the above technical solution, the sealing system is integrated into an independent sealing frame, allowing the production of the sealing frame to proceed in parallel with the production of the housing, thus improving production efficiency. The sealing frame can also be pre-assembled and quality inspected in a controlled environment, avoiding quality fluctuations during on-site adhesive application and ensuring the consistency of the final product's sealing performance.

[0008] Optionally, the inner sidewall of the mounting groove is provided with an overflow groove for the adhesive to flow in, and the bottom wall of the overflow groove is higher than the bottom wall of the mounting groove.

[0009] By adopting the above technical solution, when the sealing strip is installed in the mounting groove with adhesive, the overflow groove provides space for excess adhesive to overflow, preventing adhesive from overflowing onto the frame surface, thereby keeping the frame surface clean.

[0010] Optionally, a mounting ring plate is fixedly connected to the outer periphery of the frame. The mounting ring plate has several fixing holes. The upper shell and the lower shell have several through holes respectively. The fixing holes are directly opposite the through holes. The fasteners pass through the through holes and the fixing holes.

[0011] By adopting the above technical solution, the mounting ring plate can ensure that the frame is effectively fixed between the upper and lower housings, thereby ensuring that the sealing strips on both sides of the sealing frame are effectively squeezed. The fixing hole is aligned with the through hole, which can ensure that the fixing frame is effectively fixed in the switch body and prevent the fixing frame from shifting.

[0012] Optionally, the upper or lower housing has a groove for placing the mounting ring plate, and the groove communicates with the fixing groove.

[0013] By adopting the above technical solution, the mounting ring plate can be recessed into the groove, which will not increase the thickness between the upper and lower shells during installation, thereby ensuring that the upper and lower shells can effectively squeeze the sealing strip.

[0014] Optionally, a positioning protrusion is connected to one side of the frame, and a positioning groove is provided on the bottom wall of the fixing groove for the positioning protrusion to be inserted, and the inner wall of the positioning groove is in contact with the outer wall of the positioning protrusion.

[0015] By adopting the above technical solution, due to size limitations, the sealing frame and mounting ring plate have a small thickness in most cases, and are prone to sliding in the groove. Therefore, the sealing frame is fixed as a whole by the cooperation of the positioning protrusion and the positioning groove, thereby preventing the sealing frame from moving.

[0016] Optionally, the positioning protrusion has a guide surface on the side opposite to the frame.

[0017] By adopting the above technical solution, the positioning protrusion can be more easily inserted into the positioning groove, and it can be automatically corrected even if there is a slight deviation, which greatly reduces the assembly difficulty and improves the assembly efficiency.

[0018] Optionally, the corners of the cross-section of the mounting groove are provided with rounded corners.

[0019] By adopting the above technical solution, the rounded corners at the corners of the mounting groove eliminate sharp corners, avoiding the risk of the sealing strip being cut or torn due to stress concentration during installation and long-term pressure, thereby extending the service life of the seal.

[0020] Optionally, the groove opening of the mounting slot is provided with an arc-shaped guide angle.

[0021] By adopting the above technical solution, the guide angle can effectively guide the sealing strip into the installation groove, and the arc-shaped guide angle can effectively prevent the sharp edges at the groove opening from scratching the sealing strip, ensuring the integrity of the sealing strip.

[0022] In summary, this application has the following beneficial effects: 1. By setting up a modular sealing frame, the housing and sealing frame can be produced in parallel during the production process, which effectively improves production efficiency. When the sealing strip ages and needs to be replaced, there is no need to deal with the adhesive residue on the housing. You only need to disassemble the fasteners and replace the entire sealing frame module, which greatly reduces maintenance difficulty and time cost.

[0023] 2. By opening an overflow groove in the mounting slot, the adhesive is prevented from overflowing onto the frame surface during the application of the sealing strip, thus keeping the frame surface clean. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a load switch with a modular sealing device according to an embodiment of this application.

[0025] Figure 2 This is an exploded view of a load switch with a modular sealing device according to an embodiment of this application; Figure 3 This is a cross-sectional view of the sealing frame according to an embodiment of this application; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Explanation of reference numerals in the attached drawings: 1. Switch body; 2. Upper housing; 3. Lower housing; 4. Sealing frame; 41. Frame; 411. Mounting groove; 412. Overflow groove; 413. Rounded corner; 414. Guide angle; 42. Sealing strip; 43. Mounting ring plate; 431. Fixing hole; 44. Positioning protrusion; 441. Guide surface; 5. Fixing groove; 51. Positioning groove; 6. Fastener; 7. Through hole; 8. Groove. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a load switch with a modular sealing device. (Refer to...) Figure 1 , Figure 2The load switch with a modular sealing device includes a switch body 1, which comprises an upper housing 2, a lower housing 3, and a sealing frame 4 detachably connected between the upper housing 2 and the lower housing 3. The upper housing 2 or the lower housing 3 has a fixing groove 5 for placing the sealing frame 4. The sealing frame 4 includes a frame 41 and a sealing strip 42 connected to the top and bottom walls of the frame 41. The upper housing 2, the lower housing 3, and the sealing frame 4 are detachably connected by fasteners 6 passing through them. During assembly, the sealing frame 4 is placed into the fixing groove 5, and then the upper housing 2 and the lower housing 3 are assembled. The three are then fixed together by the fasteners 6, allowing the upper housing 2 and the lower housing 3 to effectively compress the sealing strip 42, thereby achieving a sealing effect.

[0028] Reference Figure 2 , Figure 3 The frame 41 has two mounting slots 411 for placing the sealing strips 42. These slots are directly opposite the upper housing 2 and the lower housing 3, respectively. The sealing strips 42 on both sides abut against the upper housing 2 and the lower housing 3, respectively. During installation, the sealing strips 42 effectively fill assembly gaps, forming top and bottom seals with the upper housing 2 and the lower housing 3, respectively, thus ensuring a tight seal.

[0029] Reference Figure 2 , Figure 3 and Figure 4 The mounting groove 411 has overflow grooves 412 on both sides of its inner sidewalls for adhesive to flow in. The bottom wall of the overflow groove 412 is higher than the bottom wall of the mounting groove 411. When installing the sealing strip 42, the adhesive is first applied to the bottom wall of the mounting groove 411, and then the sealing strip 42 is inserted for installation. At this time, some adhesive is easily squeezed out of the mounting groove 411, but the overflow grooves 412 on the sidewalls provide space for the adhesive to overflow, thereby preventing the adhesive from overflowing onto the frame surface. The groove opening of the mounting groove 411 is provided with an arc-shaped guide angle 414. The guide angle 414 can effectively guide the sealing strip 42 into the mounting groove 411, and the arc shape makes it less likely for the groove opening of the mounting groove 411 to scratch the sealing strip 42.

[0030] The mounting groove 411 has a rounded corner 413 at the corner of its cross-section. The rounded corner 413 eliminates sharp corners on the inner wall of the mounting groove 411, avoiding the risk of the sealing strip 42 being cut or torn due to stress concentration during installation and long-term pressure, thereby extending the service life of the seal.

[0031] Reference Figure 1 , Figure 2A mounting ring plate 43 is circumferentially connected to the outer wall of the frame 41. The top wall of the mounting ring plate 43 is flush with the top wall of the frame 41. The mounting ring plate 43 has several fixing holes 431 at equal intervals. The upper housing 2 and lower housing 3 have several through holes 7 corresponding to the fixing holes 431. Fasteners 6 pass through the through holes 7 and fixing holes 431. The evenly spaced through holes 7 and fixing holes 431 ensure uniform compression between the upper housing 2 and lower housing 3, thereby ensuring that the sealing strip 42 is uniformly compressed. In this embodiment, the fastener 6 is a bolt and nut; in other embodiments, it can be other fastening elements. Comparatively, bolts and nuts can achieve detachable connection while having a larger preload, thus having better applicability.

[0032] Reference Figure 2 , Figure 3 The upper housing 2 or lower housing 3 has a groove 8 for placing the mounting ring plate 43. The depth of the groove 8 is equal to the thickness of the mounting ring plate 43, and the groove 8 is connected to the fixing groove 5. The top wall of the mounting ring plate 43 can be flush with the outer wall of the upper housing 2 or lower housing 3, which ensures that the sealing strip 42 has sufficient depth for compression and extension during installation, ensuring tight contact between the upper housing 2 and the lower housing 3.

[0033] Reference Figure 3 , Figure 4 Several positioning protrusions 44 are fixedly connected to one side of the frame opposite the fixing groove 5. The bottom wall of the fixing groove 5 has a positioning groove 51 for the positioning protrusions 44 to be inserted into, and the inner wall of the positioning groove 51 abuts against the outer wall of the positioning protrusion 44. Due to size limitations, the frame 41 and the mounting ring plate 43 have a small thickness in most cases, which can easily cause slippage during assembly. Therefore, the cooperation between the positioning protrusions 44 and the positioning groove 51 can ensure the overall fixation of the sealing frame 4, effectively preventing the sealing frame 4 from moving during installation and facilitating assembly. The end of the positioning protrusion 44 has a guide surface 441, which can guide the positioning protrusion 44 into the groove 8, realizing the function of automatic alignment and improving assembly efficiency.

[0034] The implementation principle of the load switch with modular sealing device in this application embodiment is as follows: During assembly, adhesive is applied to the mounting groove 411, and then the sealing strip 42 is inserted. After solidification, the positioning protrusion 44 of the sealing frame 4 is inserted into the positioning groove 51 of the housing, so that the fixing hole 431 of the mounting ring plate 43 is aligned with the through hole 7. Then, the other side of the housing is covered, and the fastener 6 is passed through the fixing hole 431 and the through hole 7 to complete the installation.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A load switch with a modular sealing device, comprising a switch body (1), characterized in that: The switch body (1) includes an upper housing (2), a lower housing (3) and a sealing frame (4). The upper housing (2) or the lower housing (3) has a fixing groove (5) for placing the sealing frame (4). The sealing frame (4) includes a frame (41) and a sealing strip (42) connected to the top and bottom walls of the frame (41). The frame (41) has an installation groove (411) for placing the sealing strip (42). The sealing strips (42) on both sides abut against the upper housing (2) and the lower housing (3) respectively. The upper housing (2), the lower housing (3) and the sealing frame (4) are detachably connected by fasteners (6) passing through them.

2. The load switch with a modular sealing device according to claim 1, characterized in that: The inner wall of the mounting groove (411) is provided with an overflow groove (412) for the adhesive to flow in, and the bottom wall of the overflow groove (412) is higher than the bottom wall of the mounting groove (411).

3. The load switch with a modular sealing device according to claim 1, characterized in that: The frame (41) is fixedly connected to an installation ring plate (43) on its outer periphery. The installation ring plate (43) has several fixing holes (431). The upper shell (2) and the lower shell (3) have several through holes (7) respectively. The fixing holes (431) are directly opposite the through holes (7). The fastener (6) passes through the through holes (7) and the fixing holes (431).

4. The load switch with a modular sealing device according to claim 3, characterized in that: The upper housing (2) or the lower housing (3) has a groove (8) for placing the mounting ring plate (43), and the groove (8) is connected to the fixing groove (5).

5. The load switch with a modular sealing device according to claim 1, characterized in that: The frame (41) is connected to a positioning protrusion (44) on one side. The bottom wall of the fixing groove (5) is provided with a positioning groove (51) for the positioning protrusion (44) to be inserted. The inner wall of the positioning groove (51) is in contact with the outer wall of the positioning protrusion (44).

6. The load switch with a modular sealing device according to claim 5, characterized in that: The positioning protrusion (44) has a guide surface (441) on the side away from the frame.

7. The load switch with a modular sealing device according to claim 1, characterized in that: The corner of the cross-section of the mounting groove (411) is provided with a rounded corner (413).

8. The load switch with a modular sealing device according to claim 1, characterized in that: The mounting groove (411) has an arc-shaped guide angle (414) at its edge.

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