Dual-power automatic change-over switch

Abstract

The utility model provides a dual power supply automatic change-over switch, which comprises a change-over switch body and a heat dissipation assembly, and is characterized in that the heat dissipation assembly comprises a dustproof shell detachably arranged on one side of the change-over switch body; the fixing plate is arranged in the dustproof shell and is detachably connected with one side of the change-over switch body; a plurality of fixing rods, wherein each fixing rod is fixedly connected with the fixing plate; and a plurality of heat dissipation fins, each heat dissipation fin is slidably connected to the fixing rod and can be slidably pulled away from the corresponding fixing rod, and each heat dissipation fin abuts against one side of the change-over switch body. According to the dual-power-supply automatic change-over switch of the utility model, heat dissipation of the dual-power-supply automatic change-over switch can be facilitated through the arrangement of the heat dissipation assembly, and internal heat dissipation fins can be replaced and cleaned conveniently, and therefore, the heat dissipation performance can be improved, and the service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic transfer switches, in particular to a dual power supply automatic transfer switch. Background Art

[0002] The dual power automatic transfer switch, as the name suggests, is used to automatically connect to the backup power supply through the dual power switching switch when the power is suddenly cut off, so that our operation will not be interrupted and can continue to operate. The purpose of the dual power automatic transfer switch is simply to have one main power supply and one backup power supply. When the normal power suddenly fails or the power is cut off, the dual power switching switch will automatically switch to the backup power supply so that the equipment can still operate normally.

[0003] The conventional dual power conversion switch structure on the market currently has a circuit board installed in its housing. However, the circuit board will generate a certain amount of heat during operation. Most of the existing technologies only dissipate heat through the heat dissipation holes on the housing. The heat dissipation performance is poor, which can easily lead to excessive internal temperature in the long term, causing damage to the circuit board, thereby affecting the use and reducing the service life. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides a dual power automatic transfer switch, which solves the problem in the prior art that the conventional dual power transfer switch structure currently on the market has a circuit board, and the circuit board is installed in its shell, but the circuit board will generate a certain amount of heat during operation. Most of the prior art only dissipates heat through the heat dissipation holes on the shell, and the heat dissipation performance is poor. It is easy to cause the internal temperature to be too high for a long time, causing damage to the circuit board, thereby affecting the use and reducing the service life.

[0005] The utility model provides a dual power automatic transfer switch, comprising a transfer switch body and a heat dissipation component, wherein the heat dissipation component is arranged relative to a circuit board in the transfer switch body and performs heat dissipation, and the heat dissipation component comprises:

[0006] A dustproof cover, which is detachably arranged on one side of the transfer switch body;

[0007] A fixing plate, which is disposed in the dustproof shell and is detachably connected to one side of the transfer switch body;

[0008] A plurality of fixing rods, each of which is fixedly connected to the fixing plate;

[0009] A plurality of heat dissipation fins, each of which is slidably connected to the fixing rod and can be slidably withdrawn from the corresponding fixing rod, and each of which is in contact with one side of the switching switch body.

[0010] Furthermore, a threaded barrel connected to one side of the switching switch body is provided in the dustproof shell, and a bolt which rotates relative to the fixing plate and is threadedly connected to the threaded barrel is passed through the fixing plate, and the bolt moves along the axial direction of the threaded barrel to abut against the fixing plate or separate from it.

[0011] Furthermore, a sliding sleeve is fixed on the heat dissipation fin, and the sliding sleeve is sleeved on the corresponding fixing rod. A screw is threadedly connected on the sliding sleeve and can abut against the corresponding fixing rod after being screwed in.

[0012] Furthermore, a plurality of heat dissipation holes are provided on the dustproof shell.

[0013] Furthermore, a mounting rail is provided on one side of the switch body located at the dustproof shell.

[0014] Furthermore, the conversion switch body includes a control terminal and a wiring terminal spliced ​​therewith, the wiring terminal includes a shell and a heat dissipation cover, and the heat dissipation cover is detachably connected to the shell.

[0015] Furthermore, the heat dissipation cover is provided with a buckle, and the housing is provided with a slot used in conjunction with the buckle, and the heat dissipation cover is embedded in the slot through the buckle to form a detachable structure.

[0016] Furthermore, the shell and the heat dissipation cover are both provided with a plurality of ventilation holes.

[0017] Furthermore, the control end is provided with a normal power closing indicator light, an AC power closing indicator light, a normal power supply power indicator light, an AC power supply power indicator light, an operating handle and a manual / automatic mode switch, and the wiring terminal is provided with a normal power input terminal, a backup power input terminal and a load input terminal.

[0018] Furthermore, the dual power automatic conversion switch also includes a dual power automatic conversion circuit.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The dual power automatic transfer switch of the utility model can facilitate heat dissipation of the dual power automatic transfer switch by arranging a heat dissipation component, and is convenient for replacing and cleaning the internal heat dissipation fins, thereby improving the heat dissipation performance and service life of the dual power automatic transfer switch.

[0021] When the dust adhering to the heat sink fins needs to be cleaned, the operator can first remove the fixing plate from the switch body, and then clean the fixing plate, the fixing rod and the plurality of heat sink fins. During the cleaning process, the operator can appropriately slide and adjust the heat sink fins, thereby changing the spacing between adjacent heat sink fins, so as to facilitate the cleaning of the heat sink fins. Of course, the operator can also slide and withdraw the heat sink fins from the corresponding fixing rods, thereby removing the heat sink fins from the fixing rods, and then cleaning the heat sink fins separately. After the cleaning is completed, the operator installs the heat sink fins on the corresponding fixing rods, and then installs the fixing plate on the switch body. At this time, it is ensured that the heat sink fins are in contact with one side of the switch body, and the cleaning of the heat sink fins is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a dual power automatic transfer switch according to an embodiment of the utility model;

[0023] Figure 2 This is a side view of a dual power automatic transfer switch according to an embodiment of the utility model, mainly a cross-sectional view of a heat dissipation component;

[0024] Figure 3 This is a schematic diagram of the exploded structure of a dual power automatic transfer switch according to an embodiment of the utility model;

[0025] Figure 4 This is a circuit schematic diagram of the utility model dual power automatic conversion circuit;

[0026] Description of Figure Numbers:

[0027] The transfer switch body 100, the control terminal 110, the normal power closing indicator light 111, the AC power closing indicator light 112, the normal power power indicator light 113, the AC power power indicator light 114, the operating handle 115, the manual / automatic mode switch 116, the terminal 120, the shell 121, the heat dissipation cover 122, the buckle 130, the card slot 140, the vent 150, the normal power input terminal 160, the standby power input terminal 170, the load input terminal 180, the mounting rail 190, the heat dissipation component 200, the dust cover 201, the fixing plate 202, the fixing rod 203, the heat dissipation fin 204, the threaded cylinder 205, the bolt 206, the sliding sleeve 207, the screw 208, and the heat dissipation hole 209.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] like Figure 1-2 As shown, an embodiment of the utility model provides a dual power automatic transfer switch, including a transfer switch body 100 and a heat dissipation assembly 200, wherein the heat dissipation assembly 200 includes a dustproof shell 201, a fixing plate 202, a plurality of fixing rods 203 and a plurality of heat dissipation fins 204, wherein the dustproof shell 201 is detachably arranged on one side of the transfer switch body 100, and can be detachably connected by means of bolts 206 or buckles 130; the fixing plate 202 is arranged in the dustproof shell 201, and is detachably connected to one side of the transfer switch body 100; each of the fixing rods 203 is fixedly connected to the fixing plate 202; each of the heat dissipation fins 204 is slidably connected to the fixing rods 203, and can be slidably pulled out of the corresponding fixing rods 203, and each of the heat dissipation fins 204 is abutted against one side of the transfer switch body 100.

[0031] The dual power automatic transfer switch provided by the embodiment of the utility model can facilitate heat dissipation of the dual power automatic transfer switch by providing a heat dissipation assembly 200, and facilitate replacement and cleaning of the internal heat dissipation fins 204, thereby improving its heat dissipation performance and service life.

[0032] During specific use, when it is necessary to clean the dust adhered to the heat sink 204, the operator can first remove the fixing plate 202 from the switching switch body 100, and then clean the fixing plate 202, the fixing rod 203 and the plurality of heat sink fins 204. During the cleaning process, the operator can appropriately slide and adjust the heat sink 204, thereby changing the spacing between adjacent heat sink fins 204, so as to facilitate the cleaning of the heat sink 204; of course, the operator can also slide and pull the heat sink 204 away from the corresponding fixing rod 203, thereby removing the heat sink 204 from the fixing rod 203, and then cleaning the heat sink 204 separately; after the cleaning is completed, the operator installs the heat sink 204 on the corresponding fixing rod 203, and then installs the fixing plate 202 on the switching switch body 100, at this time, ensure that the heat sink 204 is in contact with one side of the switching switch body 100, and the cleaning of the heat sink 204 is completed.

[0033] like Figure 2As shown, in the embodiment of the utility model, a threaded barrel 205 connected to one side of the switching switch body 100 is provided in the dustproof shell 201, and a bolt 206 is pierced through the fixing plate 202, which is rotated relative to the fixing plate 202 and threadedly connected to the threaded barrel 205. The bolt 206 moves along the axial direction of the threaded barrel 205 to abut against the fixing plate 202, or is separated from it. By rotating the bolt 206, the bolt 206 is made to approach the fixing plate 202 along the axis of the threaded barrel 205 until it abuts against it to complete the connection, thereby realizing quick installation and disassembly of the fixing plate 202, and the manufacturing cost is low, the installation and disassembly efficiency is high, and the practicability is strong.

[0034] like Figure 2 As shown, in the embodiment of the utility model, a sliding sleeve 207 is fixed on the heat dissipation fin 204, and the sliding sleeve 207 is sleeved on the corresponding fixing rod 203. The sliding sleeve 207 is threadedly connected with a screw 208 which can abut against the corresponding fixing rod 203 after being screwed in; specifically, the operator can loosen the screw 208 and then slide the heat dissipation fin 204, thereby changing the spacing between adjacent heat dissipation fins 204, so as to facilitate the operator to clean the heat dissipation fin 204.

[0035] like Figure 2 As shown, in a preferred embodiment of the present invention, in order to further improve the heat dissipation effect, the heat dissipation fins 204 are all bent into a corrugated sheet structure, which can increase the heat dissipation area of ​​the heat dissipation fins 204, thereby improving the heat dissipation efficiency.

[0036] like Figure 2 As shown, in a preferred embodiment of the utility model, the dustproof shell 201 is provided with a plurality of heat dissipation holes 209, which are circular in shape, and the heat dissipation holes 209 further improve the heat dissipation effect, and the dustproof shell 201 can further prevent dust from adhering to the heat dissipation fins 204. In another embodiment, a plurality of heat receiving blocks for heat transfer are fixed on the inner wall of the dustproof shell 201, and the heat receiving blocks can receive the heat in the dustproof shell 201, thereby transferring the heat to the dustproof shell 201 and diffusing the heat outward through the dustproof shell 201, thereby further improving the heat dissipation efficiency.

[0037] like Figure 1-2 As shown, in a preferred embodiment of the utility model, the switching switch body 100 is provided with a mounting rail 190 on one side of the dustproof shell 201. The mounting rail 190 facilitates the installation and removal of the switching switch body 100 and also facilitates position adjustment, thereby improving its practicality and flexibility.

[0038] like Figure 1 and Figure 3As shown, in the embodiment of the utility model, the conversion switch body 100 includes a control terminal 110 and a wiring terminal 120 spliced ​​therewith, the wiring terminal 120 includes a shell 121 and a heat dissipation cover 122, and the heat dissipation cover 122 is detachably connected to the shell 121; specifically, the heat dissipation cover 122 is provided with a buckle 130, and the shell 121 is provided with a slot 140 used in conjunction with it, and the heat dissipation cover 122 is embedded in the slot 140 through the buckle 130 to form a detachable structure. In this embodiment, specifically, a buckle 130 is provided on both sides of the heat dissipation cover 122, and corresponding slots 140 are provided on both sides of the corresponding shell 121, that is, the heat dissipation cover 122 is fixed by two buckles 130. Of course, in other embodiments, the number of buckles 130 can also be two on one side, that is, the heat dissipation cover 122 is fixed by four buckles 130.

[0039] like Figure 1 As shown, in a preferred embodiment of the utility model, the shell 121 and the heat dissipation cover 122 are both provided with a plurality of air holes 150, and the air holes 150 are rectangular in shape. The hot air in the shell 121 is dissipated through the air holes 150, so as to further improve the heat dissipation efficiency.

[0040] like Figure 1 As shown, in the embodiment of the utility model, the control terminal 110 is provided with a normal power closing indicator light 111, an AC power closing indicator light 112, a normal power supply power indicator light 113, an AC power supply power indicator light 114, an operating handle 115 and a manual / automatic mode switch 116, and the connection terminal 120 is provided with a normal power input terminal 160, a backup power input terminal 170 and a load input terminal 180.

[0041] like Figure 4 As shown, in the embodiment of the utility model, the dual power automatic conversion switch also includes a dual power automatic conversion circuit, the dual power automatic conversion circuit includes a common power circuit and a backup power circuit, and the input ends of the common power circuit and the backup AC circuit are both controlled by the main switch SW;

[0042] The common power supply circuit includes a rectifier bridge D1, the AC end of the rectifier bridge D1 is connected to the access end of the common power supply N1-A1 through a series current limiting resistor FR1, an auxiliary normally closed contact K2-1 of a standby relay, a main contact K1 of a common relay and an auxiliary normally open contact K1-1 of a common relay, and the DC end of the rectifier bridge D1 is connected to the input end L1 of the load through a resistor R1; specifically, the common power supply N1-A1 includes an N1 loop and an A1 loop, a main switch SW and a current limiting resistor FR1 are arranged on the A1 loop, and a main contact K1 of a common relay and an auxiliary normally open contact K1-1 of a common relay are arranged on the N1 loop;

[0043] The backup power supply circuit includes a rectifier bridge D2, the AC end of the rectifier bridge D2 is connected to the access end of the backup power supply A2-N2 through a series current limiting resistor FR2, an auxiliary normally closed contact K1-2 of a common relay, a main contact K2 of a backup relay and an auxiliary normally open contact K2-2 of a backup relay, and the DC end of the rectifier bridge D2 is connected to the input end L2 of the load through a resistor R2; specifically, the backup power supply N2-A2 includes an N2 loop and an A2 loop, a main switch SW, a current limiting resistor FR2, a main contact K2 of a backup relay and an auxiliary normally open contact K2-2 of a backup relay are arranged on the A2 loop, and a manual-automatic switch STB is arranged on the N2 loop.

[0044] The specific working process of the dual power automatic conversion circuit of the utility model embodiment is as follows:

[0045] Automatic switching state: manual automatic switch STB is closed

[0046] When the common power supply N1-A1 is powered on, the main switch SW is closed, and the coil KA1 of the common relay is energized and attracted, so that the main contact K1 and the auxiliary normally open contact K1-1 of the common relay are closed, and the common relay remains attracted to supply power to the rectifier bridge D1, and then the rectifier bridge D1 outputs direct current to supply power to the load. At the same time, the auxiliary normally closed contact K1-2 of the common relay in the backup power supply circuit is disconnected, and the backup power supply circuit is not conducting;

[0047] When the normal power supply N1-A1 loses power, the auxiliary normally closed contact K1-2 of the normal relay is closed, and the coil KA2 of the standby relay is energized and attracted, so that the main contact K2 and the auxiliary normally open contact K2-2 of the standby relay are closed, and the standby relay remains attracted to supply power to the rectifier bridge D2, and then the DC output is supplied to the load through the rectifier bridge D2. At the same time, the normally closed contact K2-1 of the standby relay in the normal power circuit is disconnected, realizing the interlocking of the normal power circuit and the standby power circuit.

[0048] Manual switching state: manual automatic switch STB is disconnected

[0049] When the normal power supply N1-A1 loses power, the closing manual automatically switches STB, and the coil KA2 of the standby relay is energized and energized, so that the main contact K2 and auxiliary normally open contact K2-2 of the standby relay are closed, and the standby relay remains energized to supply power to the rectifier bridge D2, and then the rectifier bridge D2 outputs DC to supply power to the load.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dual power automatic transfer switch, characterized in that: The invention comprises a transfer switch body (100) and a heat dissipation component (200), wherein the heat dissipation component (200) is arranged relative to a circuit board in the transfer switch body (100) and performs heat dissipation, and the heat dissipation component (200) comprises: A dustproof shell (201) detachably arranged on one side of the transfer switch body (100); A fixing plate (202) is disposed in the dustproof housing (201) and is detachably connected to one side of the switching switch body (100); A plurality of fixing rods (203), each of the fixing rods (203) being fixedly connected to the fixing plate (202); A plurality of heat dissipation fins (204), each of the heat dissipation fins (204) is slidably connected to the fixing rod (203) and can be slidably withdrawn from the corresponding fixing rod (203), and each of the heat dissipation fins (204) is in contact with one side of the switching switch body (100); The transfer switch body (100) comprises a control terminal (110) and a connection terminal (120) spliced ​​therewith, the connection terminal (120) comprises a housing (121) and a heat dissipation cover (122), and the heat dissipation cover (122) is detachably connected to the housing (121); The control terminal (110) is provided with a normal power supply closing indicator light (111), an AC power supply closing indicator light (112), a normal power supply power indicator light (113), an AC power supply power indicator light (114), an operating handle (115) and a manual / automatic mode switch (116), and the connection terminal (120) is provided with a normal power supply input terminal (160), a standby power supply input terminal (170) and a load input terminal (180).

2. A dual power automatic transfer switch as claimed in claim 1, characterized in that: A threaded barrel (205) connected to one side of the switching switch body (100) is provided in the dustproof shell (201), and a bolt (206) is passed through the fixing plate (202) and is rotatable relative to the fixing plate (202) and is threadedly connected to the threaded barrel (205). The bolt (206) moves along the axial direction of the threaded barrel (205) to abut against the fixing plate (202) or to separate from it.

3. A dual power automatic transfer switch as claimed in claim 2, characterized in that: A sliding sleeve (207) is fixed on the heat dissipation fin (204), and the sliding sleeve (207) is sleeved on the corresponding fixing rod (203). A screw (208) is threadedly connected on the sliding sleeve (207) and can abut against the corresponding fixing rod (203) after being screwed in.

4. A dual power automatic transfer switch as claimed in claim 1, characterized in that: The dustproof shell (201) is provided with a plurality of heat dissipation holes (209).

5. A dual power automatic transfer switch as claimed in claim 1, characterized in that: The switching switch body (100) is provided with a mounting guide rail (190) on one side of the dustproof shell (201).

6. A dual power automatic transfer switch as claimed in claim 1, characterized in that: The heat dissipation cover (122) is provided with a buckle (130), and the housing (121) is provided with a slot (140) used in conjunction with the buckle (130), and the heat dissipation cover (122) is embedded in the slot (140) through the buckle (130) to form a detachable structure.

7. A dual power automatic transfer switch as claimed in claim 1, characterized in that: The housing (121) and the heat dissipation cover (122) are both provided with a plurality of air holes (150).

8. A dual power automatic transfer switch according to any one of claims 1 to 7, characterized in that: The dual power automatic conversion switch also includes a dual power automatic conversion circuit.

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