Improved guide rail type dual power switch

Abstract

The utility model relates to double power supply change-over switch technical field especially relates to an improved guide rail type double power supply change-over switch, including casing, install in the casing upper end right side a group of electricity receiving seat, install in the electricity receiving seat lower extreme and be located in the casing inboard first static contact, install in the casing lower end right side two groups of electricity outlet, install in the electricity outlet upper end and be located in the casing inboard second static contact and install in the casing left end inboard control panel. The utility model can make the movable contact be stably positioned between the buckle frame and the plastic rotating column, reduce the contact wear between the movable contact and the buckle frame, avoid the abnormal problems such as deviation, misplacement, shaking, movement interference and switching insensitivity in the switching process of the movable contact, improve the safety and stability of the guide rail type double power supply change-over switch, and prolong the service life of the change-over switch.

Description

Technical Field

[0001] This utility model relates to the field of dual power supply switching technology, and in particular to an improved rail-mounted dual power supply switching device. Background Technology

[0002] A dual-power automatic transfer switch is a microprocessor-controlled device used in power grid systems to switch between grid power and other power sources, or between grid power and generator power, ensuring continuous power supply. In the event of a sudden power failure or outage, the dual-power transfer switch automatically switches to the backup power source, allowing equipment to continue operating normally. Common applications include elevators, fire protection systems, surveillance systems, and lighting.

[0003] like Figure 5 and Figure 6 As shown, this is the structure of the plastic rotary column and moving contact installed in the previous generation of rail-mounted dual power transfer switches. A downwardly protruding fixing block is fixedly connected to the lower end of the moving contact. At the same time, a fixing hole is opened on the buckle of the plastic rotary column for the fixing block to be fastened in. Finally, a spiral compression spring is installed between the buckle and the moving contact to complete the combination and fixing operation between the plastic rotary column and the moving contact. However, this structure has the following shortcomings in actual use: The combination and fixing between the moving contact and the buckle is mainly achieved by the fixing block, the fixing hole and the spiral compression spring. Since the moving contact is made of metal, its hardness is greater than that of the fixing hole made of plastic. During long-term use, when the plastic rotary column drives the moving contact to swing up and down, the fixing block on the moving contact is prone to continuous contact and wear on the fixing hole on the buckle. This causes the moving contact to shift, misalign, wobble and interfere with the movement within the buckle. As a result, the entire switching process becomes insensitive and may even fail to respond, reducing the safety and stability of the rail-mounted dual power transfer switch.

[0004] In view of this, it is particularly important to design and manufacture a plastic swivel column and moving contact assembly fixing structure that provides a stable connection and reduces contact wear between the buckle and the moving contact, which is especially important for use in rail-mounted dual power supply changeover switches. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the plastic rotating column and moving contact structure installed on the previous generation of rail-mounted dual power transfer switches is prone to contact wear between the moving contact and the rotating buckle during long-term use, which leads to abnormal operation of the moving contact. Therefore, an improved rail-mounted dual power transfer switch is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An improved rail-mounted dual-power transfer switch includes a housing, a set of contact sockets mounted on the upper right side of the housing, a first stationary contact mounted on the lower end of the contact sockets and located inside the housing, two sets of output sockets mounted on the lower right side of the housing, a second stationary contact mounted on the upper end of the output sockets and located inside the housing, a control plate mounted on the inner left side of the housing, a knob mounted at the center of the front end of the housing, and a plastic rotating column mounted horizontally inside the housing and located between the first and second stationary contacts. The right end of the plastic rotating column is fixedly connected to multiple latches at equal intervals between the first and second stationary contacts. The inner sides of each of the multiple latches are equipped with moving contacts that can dynamically abut against the first and second stationary contacts through a latching mechanism.

[0007] As a further description of the above technical solution: The locking mechanism includes a limiting post integrally fixed to the lower end of the buckle frame and extending upward through the moving contact, a limiting hole opened at the rear end of the moving contact and matching the limiting post, and a spiral compression spring installed between the buckle frame and the moving contact and located directly above the limiting post.

[0008] As a further description of the above technical solution: The cross-sectional shape of both the limiting post and the limiting hole is elliptical.

[0009] As a further description of the above technical solution: A metal rotating rod is fixedly connected to the front left end of the plastic rotating column and is movably connected to the rear end of the knob.

[0010] As a further description of the above technical solution: A maintenance cover is detachably installed on the right front side of the housing, between the power receiving socket and the power output socket.

[0011] As a further description of the above technical solution: The rear end of the housing is located behind the plastic swivel column and is detachably fitted with a rear cover.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this invention, the original plastic rotating column and moving contact structure have been scientifically and rationally improved. A limiting post with an elliptical cross-section is set on the plastic rotating column, and a matching limiting hole is set on the moving contact. Previously, the contact surface between the moving contact and the buckle was limited, which easily led to contact wear. The improved moving contact can be positioned and fixed between the buckle and the limiting post through the limiting hole, which can effectively restrict the degree of freedom of the moving contact in the X and Y axes within the buckle. At the same time, after the spiral compression spring is installed between the buckle and the moving contact, it can further restrict the degree of freedom of the moving contact in the Z axis within the buckle. This structure allows the moving contact to be stably limited between the buckle and the plastic rotating column, reducing the occurrence of abnormal problems such as displacement, misalignment, shaking, motion interference, and insensitive switching during the switching process caused by contact wear between the moving contact and the buckle. This improves the safety and stability of the rail-mounted dual power supply switch and extends the service life of the switch. Attached Figure Description

[0013] Figure 1 This is a simplified structural diagram of an improved rail-mounted dual-power switching switch proposed in this utility model. Figure 2 A three-dimensional front view of the dual power supply switch after the cover plate has been disassembled for inspection; Figure 3 A 3D rear view diagram of the dual power switch after the back cover has been disassembled; Figure 4 This is a three-dimensional disassembly diagram of the plastic rotating column and the moving contact in this utility model; Figure 5 A three-dimensional disassembly diagram of the previous generation of plastic rotary column and moving contact in existing technology. Figure 1 ; Figure 6 A three-dimensional disassembly diagram of the previous generation of plastic rotary column and moving contact in existing technology. Figure 2 .

[0014] Legend: 1. Housing; 101. Electrical connector; 102. First stationary contact; 103. Electrical output connector; 104. Second stationary contact; 105. Inspection cover; 106. Rear cover; 2. Control panel; 3. Knob; 4. Plastic rotating column; 401. Metal rotating rod; 402. Buckle; 403. Limiting post; 5. Moving contact; 501. Limiting hole; 6. Helical compression spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 This utility model provides a technical solution: an improved guide rail type dual power supply switch, including a housing 1, a set of power bases 101 installed on the upper right side of the housing 1, a first stationary contact 102 installed on the lower end of the power bases 101 and located inside the housing 1, two sets of power output bases 103 installed on the lower right side of the housing 1, a second stationary contact 104 installed on the upper end of the power output bases 103 and located inside the housing 1, a control plate 2 installed on the left inner side of the housing 1, a knob 3 rotatably installed in the middle of the front end of the housing 1, and a plastic rotating column 4 rotatably installed inside the housing 1 and located between the first stationary contact 102 and the second stationary contact 104. The right end of the plastic rotating column 4 is fixedly connected with multiple fasteners 402 at equal intervals between the first stationary contact 102 and the second stationary contact 104. The inner side of each of the multiple fasteners 402 is equipped with a moving contact 5 that can dynamically abut against the first stationary contact 102 and the second stationary contact 104 through a fastening mechanism.

[0017] Specifically, such as Figure 3 and Figure 4 As shown, the locking mechanism includes a limiting post 403 integrally fixed to the lower end of the buckle 402 and extending upward through the moving contact 5, a limiting hole 501 opened at the rear end of the moving contact 5 and matching the limiting post 403, and a spiral compression spring 6 installed between the buckle 402 and the moving contact 5 and located directly above the limiting post 403.

[0018] The limiting post 403 and the limiting hole 501 are both elliptical in cross-sectional shape. Compared with the circular limiting post 403 and the limiting hole 501, the limiting post 403 and the limiting hole 501 have a larger contact area, better support and load-bearing effect. At the same time, they can effectively reduce the deflection movement of the moving contact 5 in the XY plane within the buckle 402, thereby improving the structural stability of the moving contact 5 assembly fixed within the buckle 402.

[0019] Specifically, such as Figure 3-6 As shown, a metal rotating rod 401 is fixedly connected to the front left end of the plastic rotating column 4 and is movably connected to the rear end of the knob 3. The setting of the metal rotating rod 401 can establish a connection between the plastic rotating column 4 and the knob 3, and convert the rotation action of the knob 3 into the up and down rotation action of the plastic rotating column 4.

[0020] Specifically, such as Figure 1-3As shown, a maintenance cover 105 is detachably installed on the front right side of the housing 1 between the power receiving socket 101 and the power output socket 103. When the operator removes the maintenance cover 105, the position of the first stationary contact 102, the second stationary contact 104, the plastic rotating column 4 and the moving contact 5 inside the housing 1 can be observed, as well as whether any abnormal operation has occurred. This facilitates the operator's inspection and maintenance of the switch. At the same time, a rear cover 106 is detachably installed on the rear end of the housing 1 behind the plastic rotating column 4. After removing the rear cover 106, the plastic rotating column 4 can be completely removed from the housing 1 or installed into the housing 1.

[0021] Working principle: When using the device, the operator can insert the tail end of the moving contact 5 into the buckle 402 beforehand, and then align the limiting hole 501 on the moving contact 5 and insert it downward into the limiting post 403 of the buckle 402. This restricts the freedom of the moving contact 5 in the X and Y axes on the plastic buckle 4. Then, the spiral compression spring 6 can be compressed and inserted between the buckle 402, the moving contact 5 and the limiting post 403. Under normal conditions, the spiral compression spring 6 can generate an outward elastic compression force, thereby applying a compression force to the moving contact 5 in the direction of the buckle 402, which restricts the freedom of the moving contact 5 in the Z axis on the plastic buckle 4. At this time, the moving contact 5 can be combined and fixed on the plastic buckle 4.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved guide rail type dual power supply switch, comprising a housing (1), a set of power connectors (101) installed on the upper right side of the housing (1), a first stationary contact (102) installed on the lower end of the power connectors (101) and located inside the housing (1), two sets of power output connectors (103) installed on the lower right side of the housing (1), a second stationary contact (104) installed on the upper end of the power output connectors (103) and located inside the housing (1), a control plate (2) installed on the inner side of the left end of the housing (1), a knob (3) rotatably installed in the middle of the front end of the housing (1), and a plastic rotating column (4) rotatably installed inside the housing (1) and located between the first stationary contact (102) and the second stationary contact (104), characterized in that, The right end of the plastic swivel column (4) is fixedly connected with multiple buckles (402) at equal intervals between the first stationary contact (102) and the second stationary contact (104). The inner side of each of the multiple buckles (402) is equipped with a moving contact (5) that can dynamically abut against the first stationary contact (102) and the second stationary contact (104) through a buckling mechanism.

2. The improved rail-mounted dual-power transfer switch according to claim 1, characterized in that, The locking mechanism includes a limiting post (403) integrally fixed to the lower end of the buckle frame (402) and extending upward through the moving contact (5), a limiting hole (501) opened at the rear end of the moving contact (5) and matching the limiting post (403), and a spiral compression spring (6) installed between the buckle frame (402) and the moving contact (5) and located directly above the limiting post (403).

3. The improved rail-mounted dual-power transfer switch according to claim 2, characterized in that, The cross-sectional shape of the limiting post (403) and the limiting hole (501) is elliptical.

4. The improved rail-mounted dual-power transfer switch according to claim 1, characterized in that, The left front end of the plastic rotary column (4) is fixedly connected to a metal rotating rod (401) that is movably connected to the rear end of the knob (3).

5. The improved rail-mounted dual-power transfer switch according to claim 1, characterized in that, A maintenance cover (105) is detachably installed on the right front side of the housing (1) between the power receiving socket (101) and the power output socket (103).

6. The improved rail-mounted dual-power transfer switch according to claim 1, characterized in that, The rear end of the housing (1) is located behind the plastic swivel column (4) and is detachably fitted with a rear cover (106).

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