Load isolation switch

Abstract

The utility model discloses a load isolation switch, which comprises a switch body, power connection sheets and a shielding cover, a plurality of power connection sheets are arranged on the front side and the rear side of the switch body, the power connection sheets are used for conducting connection with a cable, and the shielding cover is arranged above the switch body in a sliding mode and can shield and protect the power connection sheets after power connection is completed. By arranging a guide clamping rib and a guide groove structure, stable guide sliding of the shielding cover is achieved, by arranging a hanging rod and a hanging table on the shielding cover to be matched with a tooth groove structure in a hanging groove, graded limiting fixing of the sliding tail end position of the shielding cover is completed, the stability of a protection structure is improved, and meanwhile the sliding buffering performance is enhanced through cooperation with a rubber strip and a clamping protrusion structure; and the shielding cover is provided with the pinching plate, so that manual operation and control are facilitated, and the positioning reliability and the operation convenience of the protection structure are enhanced on the basis of improving the use safety of the switch.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of load isolation switch, specifically relates to a load isolation switch. BACKGROUND

[0002] As a commonly used control equipment in power system, the load isolation switch is mainly used for realizing on-off control and safe isolation of power lines or electrical equipment under the condition of load, and is widely applied in high-low voltage distribution system, power maintenance, load switching and the like. The traditional load isolation switch usually comprises fixed wiring terminals and mechanical operating parts, and the closing or opening of the switch is realized by manually operating the operating rod.

[0003] However, in the prior art, some load isolation switches have the following deficiencies in structural design: the power connection piece or the wiring terminal is usually exposed after power connection, and in the process of operating the switch, it is easy to be contacted by non-professionals, and there is a risk of electric shock, especially in a high-voltage environment, and the safety hazard is more significant. At the same time, in order to realize effective protection function, some existing structures are provided with shielding devices, but there are problems such as unstable shielding position, inaccurate guiding control and insufficient limiting function, which affect the reliability and actual protection effect of the shielding device. SUMMARY

[0004] In view of the problems in the prior art, the utility model aims to provide a load isolation switch which can reliably shield the power connection piece after power connection and accurately expand and stably position through the guiding and limiting mechanism in the operating process.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A load isolation switch comprises a switch body and a plurality of power connection pieces for power connection fixed on the front and rear sides of the switch body, a shielding cover is installed on the switch body near the front and rear sides, and the shielding cover can slide in the front and rear directions on the switch body.

[0007] The shielding cover is in the shape of U opening downward, and the shielding cover slides away from the switch body to cover and shield the power connection piece.

[0008] Further, an operating boss is arranged on the upper surface of the switch body, support tables for sliding installation of the shielding cover are fixed on the front and rear sides of the switch body, and an operating rod is installed on the upper surface of the operating boss.

[0009] Further, a longitudinal hanging groove is formed on the left and right sides of the operating boss, and a tooth groove is formed on the inner bottom surface of the hanging groove.

[0010] Further, the left and right sides of the support table are provided with guide grooves, and the upper surface of the support table is provided with rubber strips near the edge.

[0011] Further, the lower side of the rubber strip is fixed with a plurality of clamping protrusions, the upper surface of the support table is provided with mounting grooves for mounting the rubber strip, and the inner side of the mounting groove is provided with a limiting groove.

[0012] Further, the left and right two hanging rods are fixed on the side of the shielding cover facing the middle of the switch body, the opposite side of the left and right two hanging rods is fixed with a hanging table near the end, the hanging table is a semi-cylindrical shape, the two side walls in the shielding cover are fixed with guide clamping ribs, and the upper side of the shielding cover is fixed with a pinch plate.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a load isolation switch, which comprises a switch body, a shielding cover and a support table, the shielding cover is slidably connected to the front and rear sides of the switch body, and the support table is fixed on the upper surface of the switch body.

[0015] The utility model discloses a load isolation switch, which comprises a switch body, a shielding cover and a support table, the shielding cover is slidably connected to the front and rear sides of the switch body, and the support table is fixed on the upper surface of the switch body.

[0016] The utility model discloses a load isolation switch, which comprises a switch body, a shielding cover and a support table, the shielding cover is slidably connected to the front and rear sides of the switch body, and the support table is fixed on the upper surface of the switch body.

[0017] The utility model discloses a load isolation switch, which comprises a switch body, a shielding cover and a support table, the shielding cover is slidably connected to the front and rear sides of the switch body, and the support table is fixed on the upper surface of the switch body.

[0018] The utility model discloses a set with antiskid texture's pinch board on the upper portion of the shielding cover, and the shielding cover can be quickly pushed to open or close in the operation process of the user, the linkage matching of the shielding cover and the operation action is realized, the operation convenience and the man-machine engineering adaptation degree are improved, and the defects of inconvenient operation and low shielding control efficiency in the prior structure are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the shielding cover retracted state schematic drawing of the utility model;

[0020] Figure 2 It is the shielding cover unfolded state schematic drawing of the utility model;

[0021] Figure 3 It is the switch body structure schematic drawing of the utility model;

[0022] Figure 4 It is the rubber strip schematic drawing of the utility model;

[0023] Figure 5 It is the shielding cover schematic drawing of the utility model.

[0024] In the drawings, the component list represented by each sign is as follows:

[0025] 1, switch body;11, support table;12, hanging groove;13, operating rod;14, operating boss;15, rubber strip;151, card convex;16, guide groove;17, installation groove;171, limiting groove;2, shielding cover;21, hanging rod;22, hanging table;23, guide clamping rib;24, pinch board;3, electricity contact piece. DETAILED DESCRIPTION

[0026] In order to make the purpose and the advantage of the utility model more clearly clear, the utility model is specifically explained below with the embodiment, and it should be understood that the following text only describes one or several specific implementation modes of the utility model, and does not strictly limit the protection scope of the utility model.

[0027] As Figure 1 And Figure 2As shown, a load isolation switch includes a switch body 1 and a plurality of power connection pieces 3 for power connection fixed on the front and back of the switch body 1, and a shielding cover 2 is installed on the switch body 1 near the front and back positions, and the shielding cover 2 can slide in the front and back directions on the switch body 1. The switch body 1 is in a cuboid structure, and the inside is filled with insulating material to enhance the dielectric strength. The power connection pieces 3 are symmetrically arranged along the front and back end surfaces of the switch body 1, and are made of tinned copper material to ensure the electrical conductivity and corrosion resistance. The shielding cover 2 is made of flame-retardant insulating engineering plastic, and is slidably connected to the outer rail of the support table 11, and the sliding direction is consistent with the arrangement direction of the power connection pieces 3, so that the exposed power connection pieces 3 can be completely covered during use, thereby avoiding the risk of electric shock caused by accidental contact with the live conductor. The front and back ends of the shielding cover 2 are provided with sliding stop edges to prevent derailment caused by excessive sliding.

[0028] The shielding cover 2 is provided in a U-shaped opening downward, and the shielding cover 2 slides away from the switch body 1 to cover and shield the power connection pieces 3. The U-shaped structure allows the shielding cover 2 to completely wrap the outer side and the upper and lower sides of the power connection pieces 3 during sliding, and forms an effective electrical isolation layer through three-sided closure. The inner surface of the shielding cover 2 is provided with an embedded insulating buffer layer for enhancing the shielding effect and preventing deformation caused by external impact. When the shielding cover 2 is slid and expanded to the terminal, the limiting structure of the hanging rod 21 is used for positioning, thereby ensuring the stability of the shielding effect.

[0029] As shown in Figure 3 , the upper surface of the switch body 1 is provided with an operation boss 14, and the front and back sides of the switch body 1 are fixed with support tables 11 for sliding installation of the shielding cover 2, and the upper surface of the operation boss 14 is provided with an operation rod 13. The operation boss 14 is made of high-strength ABS injection molding structure, and the upper surface thereof is connected with the operation rod 13 through screws, and the operation rod 13 is used for pushing control of the shielding cover 2. The support tables 11 are symmetrically arranged at the two ends of the switch body 1, and the support tables 11 and the shielding cover 2 are in a sliding groove matching structure, and the stable and straight sliding path of the shielding cover 2 is realized through guiding control, thereby preventing deviation or jamming.

[0030] As shown in Figure 3 , the left and right sides of the operation boss 14 are provided with longitudinal hanging grooves 12, and the inner bottom surface of the hanging groove 12 is provided with a tooth groove; the hanging groove 12 is precisely provided on the two sides of the operation boss 14 through CNC processing, and the internal tooth groove is provided in a sawtooth buckle structure, and the distance between each tooth groove is equal, which is used for engaging with the outer edge of the hanging table 22 to realize multi-stage positioning, thereby facilitating the limiting operation and stable retention of the shielding cover 2 at different positions.

[0031] As shown in Figure 3As shown, guide grooves 16 are provided on both the left and right sides of the support platform 11, and horizontal rubber strips 15 are installed on the upper surface of the support platform 11 near the edge. The guide grooves 16 are through-type long grooves, which are set in the longitudinal outer edge area of ​​the support platform 11 and are used in conjunction with the guide ribs 23 on the shield 2 to limit the sliding trajectory of the shield 2. The rubber strips 15 are made of aging-resistant silicone material and are pasted on the top two sides of the support platform 11. The rubber strips 15 can provide buffer support during the sliding of the shield 2 to prevent hard friction between the shield 2 and the switch body 1.

[0032] like Figure 4 As shown, multiple locking protrusions 151 are fixed on the lower side of the rubber strip 15. The upper surface of the support platform 11 is provided with an installation groove 17 for installing the rubber strip 15. A limiting groove 171 is provided on the bottom inner side of the installation groove 17. The locking protrusions 151 are distributed on the bottom surface of the rubber strip 15 and are hemispherical protrusions. They are locked into the installation groove 17 during installation to achieve positioning. The limiting groove 171 is used to further lock the locking protrusions 151 to prevent the rubber strip 15 from shifting or falling off during repeated sliding of the shield 2, thereby improving the stability and service life of the overall structure.

[0033] like Figure 5 As shown, the shield 2 has two hanging rods 21 fixed on the side facing the middle of the switch body 1. Each of the two hanging rods 21 has a mounting platform 22 fixed near its end on the opposite side. The hanging rods 21 are hung in the mounting groove 12 using the mounting platforms 22. The mounting platforms 22 are semi-cylindrical to facilitate sliding within the mounting groove 12. When the mounting platforms 22 stop sliding, the elastic pressure of the hanging rods 21 causes the arc surface of the mounting platforms 22 to engage with the toothed groove for limiting and fixing. Guide ribs 23 are fixed on both side walls inside the shield 2, and a pinch plate 24 is fixed on the upper side of the shield 2. The hanging rods 21 are made of elastic alloy steel, and their roots... The part is fixed to the inner wall of the shield 2 by screw connection and has a resettable elasticity; the cooperation between the mounting platform 22 and the mounting groove 12 is a sliding engagement structure to ensure stable positioning at different positioning points; the guide rib 23 is integrally injection molded and forms a sliding pair with the guide groove 16 to accurately guide the front and back sliding path of the shield 2 and prevent deviation during operation; the pinch plate 24 is a textured rectangular operating plate located at the center of the shield 2, with an anti-slip structure design, which makes it easy for the operator to manually press and drive the shield 2 to move back and forth, so as to realize the safe operation of opening and closing the electric shock protection.

[0034] The working principle of this utility model is as follows: When installing the switch body 1, the contact plate 3 is connected to the cable. After the switch body 1 is connected to the power, the shield 2 is pushed by the pinch plate 24 to shield the contact plate 3, thereby effectively preventing the contact plate 3 from being directly exposed. When the operator operates the operating rod 13, the shield 2 can block and prevent electric shock.

[0035] When the shielding cover 2 slides, the shielding cover 2 is guided by the guide ribs 23 and the guide grooves 16, and the position after unfolding is fixed by the limiting of the hanging platform 22 on the hanging rod 21 being clamped in the tooth groove in the hanging groove 12.

[0036] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered the scope of the present application. The structure, device and operation method not specifically described and explained in the present application, if no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A load disconnect switch, comprising a switch body (1) and a plurality of contacting plates (3) fixed on the front and rear sides of the switch body (1) for electrical connection, characterized in that: The switch body (1) is equipped with shields (2) near the front and rear sides. The shields (2) can be slidably adjusted in the front and rear directions on the switch body (1). The shield (2) is configured as a U-shape with a downward opening, and the shield (2) slides away from the switch body (1) to cover the contact plate (3) for shielding.

2. A load disconnect switch according to claim 1, characterized in that: The upper surface of the switch body (1) is provided with an operating boss (14), and the front and rear sides of the switch body (1) are fixed with support platforms (11) for sliding installation of the shield (2). An operating rod (13) is installed on the upper surface of the operating boss (14).

3. A load disconnect switch according to claim 2, characterized in that: The operating boss (14) has longitudinal hanging grooves (12) on both the left and right sides, and the inner bottom surface of the hanging grooves (12) has toothed grooves.

4. A load disconnect switch according to claim 3, characterized in that: The support platform (11) has guide grooves (16) on both the left and right sides, and horizontal rubber strips (15) are installed on the upper surface of the support platform (11) near the edge.

5. A load disconnect switch according to claim 4, characterized in that: The rubber strip (15) has multiple locking protrusions (151) fixed on its lower side. The upper surface of the support platform (11) is provided with an installation groove (17) for installing the rubber strip (15). A limiting groove (171) is provided at the bottom inner side of the installation groove (17).

6. A load disconnect switch according to claim 4, characterized in that: The shield (2) has two hanging rods (21) fixed on the side facing the middle of the switch body (1). The two hanging rods (21) are fixed with a hanging platform (22) near the end on the opposite side. The hanging platform (22) is set as a semi-cylindrical shape. The shield (2) has guide ribs (23) fixed on the two side walls inside the shield (2). The shield (2) has a pinch plate (24) fixed on the upper side.

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