Switching device

Abstract

A switching device belongs to the technical field of switching devices. Comprising a shell and phase partition plates, clamping grooves are formed in the positions, between every two adjacent phases, of the shell, sunken parts are arranged on the bottom faces of the clamping grooves, clamping strips are arranged on the sides, facing the sunken parts, of the phase partition plates in the length direction, and protruding parts are formed in the positions, facing the sunken parts, of the clamping strips. A concave cavity used for increasing the elastic deformation amount in the process that the phase partition plate is inserted into the clamping groove is formed in the position, corresponding to the protruding part, of the phase partition plate. The utility model has the advantages that: as the concave cavities for increasing the elastic deformation in the process of extruding the phase partition plates into the clamping grooves are formed on the phase partition plates and at the parts corresponding to the lug bosses on the clamping strips, the structure of the phase partition plates can be simplified, the plugging resistance can be reduced, and the requirements of convenience in mounting and dismounting can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch electrical appliances, and in particular relates to a switch device. Background Art

[0002] Typical examples of the aforementioned switchgear category include the air circuit breakers that people are used to talking about, which are important power distribution equipment connected to the power supply network to prevent the downstream loads from being damaged by fault currents. With the development of new energy sources such as solar photovoltaic power generation and distribution systems, battery energy storage systems, and DC charging systems, the application scope of DC circuit breakers continues to expand, and the voltage requirements are also constantly increasing.

[0003] As is known in the industry, adjacent phases of a circuit breaker need to be separated by a phase partition to prevent the ejected arc from causing a phase short circuit. However, the phase partition of the circuit breaker as a switch device in the prior art has problems such as unsophisticated structure, large plugging and unplugging resistance, inconvenient installation and disassembly, and low efficiency of assembly and disassembly. Summary of the invention

[0004] The task of the utility model is to provide a switch device which is helpful to simplify the structure of the phase partition, reduce the plugging and pulling resistance and is convenient to install and disassemble.

[0005] The task of the utility model is accomplished in this way. A switch device includes a shell and a phase partition, a slot is arranged on the shell and between adjacent phases, a recess is arranged on the bottom of the slot, a clamping strip is arranged on the length direction of the phase partition and on one side facing the recess, a protrusion is formed on the clamping strip and also at a position facing the recess, and a concave cavity for increasing the elastic deformation amount during the insertion of the phase partition into the slot is formed on the phase partition and at a position corresponding to the protrusion.

[0006] In a specific embodiment of the utility model, the shell includes a base and a bottom plate, a moving contact system is arranged on the base, and a stationary contact system is arranged on the bottom plate, and the moving contact system contacts or separates with the stationary contact system to realize the connection or disconnection of the switching device.

[0007] In another specific embodiment of the present invention, when the clamping strip of the phase partition faces downward and is mated with the clamping slot with the notch facing upward, the position of the concave cavity on the phase partition is located directly above the protrusion; and when the clamping strip of the phase partition faces upward and is mated with the clamping slot with the notch facing downward, the position of the concave cavity on the phase partition is located directly below the protrusion.

[0008] In another specific embodiment of the present utility model, when the clamping strip of the phase partition faces downward and is mated with the clamping slot with the notch facing upward, the position of the concave cavity on the phase partition corresponds to the left and right sides above the clamping strip; when the clamping strip of the phase partition faces upward and is mated with the clamping slot with the notch facing downward, the position of the concave cavity on the phase partition corresponds to the left and right sides below the clamping strip.

[0009] In another specific embodiment of the present invention, the recessed portion is formed on the base and / or the bottom plate.

[0010] In another specific embodiment of the present invention, the cross-sectional shapes of the protrusion and the recess are adapted to each other.

[0011] In a further specific embodiment of the present invention, the cross-sectional shape of the protrusion is trapezoidal, and the cross-sectional shape of the recessed portion is also trapezoidal.

[0012] The technical effect of the technical solution provided by the utility model is that: since a concave cavity for increasing the elastic deformation of the phase partition in the process of squeezing the phase partition into the slot is formed on the phase partition and at a position corresponding to the raised portion on the clamping strip, it can simplify the structure of the phase partition, reduce the insertion and removal resistance, and meet the requirements of convenient installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0014] Figure 2 for Figure 1 Large picture of part A in the figure.

[0015] Figure 3 for Figure 1 Enlarged view of part B in .

[0016] Figure 4 for Figure 1 The schematic diagram of the phase partition shown in FIG. 1 is that the card strip of the phase partition faces downward and is used to mate with the card with the notch facing upward.

[0017] Figure 5 for Figure 4 sectional view of . DETAILED DESCRIPTION

[0018] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 The current position state is taken as an example, and thus it cannot be understood as a special limitation on the technical solution provided by the utility model.

[0019] See also Figures 1 to 5 ,exist Figure 1 The figure shows a housing 1 and a phase partition 2, wherein the phase partition is a partition between phases. The function of the phase partition 2 is to prevent phase-to-phase short circuit caused by arc ejection. A slot 11 is provided on the housing 1 and between adjacent phases, and a recess 111 is provided on the bottom surface of the slot 11. A clip strip 21 is provided on one side of the phase partition 2 in the length direction and facing the recess 111, and a protrusion 211 is formed on the clip strip 21 and also facing the recess 111.

[0020] The technical key points of the technical solution provided by the utility model are as follows: a concave cavity 212 for increasing the elastic deformation amount during the insertion of the phase partition 2 into the aforementioned slot 11 is formed on the aforementioned phase partition 2 and at a position corresponding to the aforementioned protrusion 211.

[0021] The housing 1 comprises a base 1a and a screen plate 1b. A moving contact system, an operating mechanism (not shown) and an arc extinguishing system are arranged on the base 1a, and a stationary contact system is arranged on the bottom plate 1b. The operation of the operating mechanism drives the moving contact system to move, so that the moving contact system contacts or separates from the stationary contact system to realize the connection or disconnection of the switching device.

[0022] like Figure 1 and Figure 4 As shown, since the aforementioned clips 21 of the aforementioned two upper phase partitions 2 are facing downward and are plugged into the aforementioned slots 11 with the notches facing upward, the position of the aforementioned cavity 212 on the aforementioned phase partition 2 is located directly above the aforementioned protrusion 211.

[0023] like Figure 1 and Figure 2 As shown, due to Figure 1 The clips 21 of the two lower phase partitions 2 face upward and are mated with the clip slots 11 with the notches facing downward, so that the recessed cavity 212 is located directly below the raised portion 211 on the phase partition 2 .

[0024] When the phase partition 2 is inserted into or clipped into the slot 11 along the arrow direction shown in the figure, the protrusion 211 and the slot 11 form an interference fit. When the protrusion 211 falls into the recess 111, the limiting is achieved, and the protrusion 211 and the slot 11 form a clearance fit.

[0025] like Figure 1 and Figure 5 As shown, when the clip 21 of the phase partition 2 faces downward and is plugged into the slot 11 with the notch facing upward, the position of the concave cavity 212 on the phase partition 2 corresponds to the left and right sides above the clip 21; according to the above, for example, Figure 5After rotating 180°, when the clip 21 of the phase partition 2 faces upward and is plugged into the clip slot 11 with the notch facing downward, the position of the cavity 212 on the phase partition 2 corresponds to the left and right sides below the clip 21 .

[0026] The aforementioned recessed portion 111 may be formed on the base 1 a alone, may be formed on the bottom plate 1 b alone, or may be formed on both the base 1 a and 1 b.

[0027] The cross-sectional shapes of the protrusion 211 and the recess 111 are adapted to each other, and in this embodiment, the cross-sectional shape of the protrusion 211 is trapezoidal, and the cross-sectional shape of the recess 111 is also trapezoidal. However, it can also be a straight line shape, a dovetail shape, or other similar shapes that can basically reflect a good plug-in effect. From the above, it can be seen that the cross-sectional shapes of the card strip 21 and the card 211 are in step with each other, that is, they can compensate each other.

[0028] It can be known from the above description and the illustrated structure that the purpose of providing the concave cavity 212 on the phase partition 2 and corresponding to the protrusion 211 is to increase the elastic deformation amount when the protrusion 211 cooperates with the slot 11.

[0029] The applicant needs to explain that the aforementioned concave cavity 212 is arranged directly above the convex portion 211, so the number of the aforementioned concave cavity 212 can be one or more. The force point of the aforementioned convex portion 211 is within the length range of the concave cavity 212, preferably arranged near the middle, at which time the deformation amount that can be caused is large.

[0030] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A switch device, comprising a housing (1) and a phase partition (2), wherein a slot (11) is provided on the housing (1) at a position between adjacent phases, a recess (111) is provided on the bottom surface of the slot (11), a clamping strip (21) is provided on one side of the phase partition (2) in the length direction and facing the recess (111), and a protrusion (211) is formed on the clamping strip (21) and also facing the recess (111), characterized in that: A concave cavity (212) for increasing the elastic deformation amount during the process of inserting the phase partition (2) into the clamping groove (11) is formed on the phase partition (2) and at a position corresponding to the protruding portion (211).

2. A switch device according to claim 1, characterized in that: The housing (1) comprises a base (1a) and a bottom plate (1b); a moving contact system is arranged on the base (1a) and a stationary contact system is arranged on the bottom plate (1b); the moving contact system and the stationary contact system are in contact or separated to realize the switching device being switched on or off.

3. A switch device according to claim 1, characterized in that: When the clamping strip (21) of the phase partition (2) faces downward and is plugged into the clamping slot (11) with the notch facing upward, the position of the concave cavity (212) on the phase partition (2) is located directly above the raised portion (211); and when the clamping strip (21) of the phase partition (2) faces upward and is plugged into the clamping slot (11) with the notch facing downward, the position of the concave cavity (212) on the phase partition (2) is located directly below the raised portion (211).

4. A switch device according to claim 1, characterized in that: When the clamping strip (21) of the phase partition (2) faces downward and is plugged into the clamping slot (11) with the notch facing upward, the position of the concave cavity (212) on the phase partition (2) corresponds to the left and right sides above the clamping strip (21); when the clamping strip (21) of the phase partition (2) faces upward and is plugged into the clamping slot (11) with the notch facing downward, the position of the concave cavity (212) on the phase partition (2) corresponds to the left and right sides below the clamping strip (21).

5. A switch device according to claim 2, characterized in that: The recessed portion (111) is formed on the base (1a) and / or the bottom plate (1b).

6. A switch device according to claim 1, characterized in that: The cross-sectional shapes of the protruding portion (211) and the recessed portion (111) are adapted to each other.

7. A switch device according to claim 1, characterized in that: The cross-sectional shape of the raised portion (211) is trapezoidal, and the cross-sectional shape of the recessed portion (111) is also trapezoidal.

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