Control and protection switching device

Abstract

The utility model relates to the technical field of switching devices, in particular to a control and protection switching device. According to the technical scheme, the shielding assembly comprises a side shell, an electromagnet, a metal sheet, a shielding plate and a heat dissipation opening, the electromagnet is fixedly installed in the side shell, the metal sheet is slidably connected to the position, located on the extension line of the electromagnet, in the side shell, and an adsorption assembly is arranged on the side portion of the metal sheet; a shielding plate is arranged on the side, away from the metal sheet, of the adsorption assembly. The temperature in the shell rises, the magnetic force of the electromagnet is reduced and smaller than the gravity of the metal sheet and the shielding plate, and the shielding plate opens the heat dissipation opening for ventilation under the gravity effect so as to reduce the temperature in the shell; when the internal temperature of the shell is normal, the magnetic force of the electromagnet is larger than the gravity of the metal sheet and the shielding plate, and the shielding plate blocks the heat dissipation opening and is opened when cooling is needed, so that dust is prevented from continuously entering the heat dissipation opening when the heat dissipation opening is normally opened.

Description

Technical Field

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

[0002] Control and protection switchgear is an important device to ensure the safe operation of electrical appliances. It adopts a modular single product structure and integrates the main functions of traditional circuit breakers, contactors, protection relays, starters, isolators, etc.

[0003] In the prior art, a vent is provided on the control and protection switch electrical appliance, and heat is dissipated through the vent to reduce the temperature inside the control and protection switch electrical appliance.

[0004] However, the ventilation holes of this type of control and protection switch are often open, and static electricity exists inside the control and protection switch, so dust particles may enter the interior of the control and protection switch through the ventilation holes. Utility Model Content

[0005] The utility model aims to propose a control and protection switch electrical appliance to solve the problem in the background technology that the vents are always open, causing dust particles to enter through the vents.

[0006] The technical solution of the utility model: control and protection switch electrical equipment, including

[0007] A housing, the right side of which is fixedly mounted with an auxiliary circuit assembly and an auxiliary module assembly, and the front side of the housing is rotatably connected with a knob;

[0008] A shielding component comprises a side shell, an electromagnet, a metal sheet, a shielding plate and a heat dissipation port, wherein the electromagnet is fixedly installed inside the side shell, a metal sheet is slidably connected inside the side shell and located on the extension line of the electromagnet, an adsorption component is arranged on the side of the metal sheet, and a shielding plate is arranged on the side of the adsorption component away from the metal sheet;

[0009] The side shell is fixedly mounted on the side of the shell, a heat dissipation opening is opened on the side of the shell and on the same side of the side shell, the shielding plate covers the heat dissipation opening, and the electromagnet includes an iron core and wires inside the control and protection switch electrical appliance.

[0010] Optionally, two symmetrically arranged buffer pads are fixedly installed inside the side shell, and the buffer pads are located between the electromagnet and the metal sheet.

[0011] Optionally, the shielding plate is parallel to the side of the shell, and the shielding plate slides on the side of the shell.

[0012] Optionally, a guide rod is fixedly installed between the buffer pad and the side shell, and the metal sheet slides on the body of the guide rod.

[0013] Optionally, the adsorption assembly includes a rubber rod, a fixing ring and fur, the end of the rubber rod is fixedly connected to the metal sheet, the fixing ring is fixedly installed on the side of the shell, the rubber rod passes through the fixing ring, and the fur is fixedly installed at the position where the fixing ring contacts the rubber rod.

[0014] Optionally, the rubber rod passes through the inside of the side shell, the rubber rod and the baffle plate are parallel to each other, an offset plate is fixedly installed on the end of the rubber rod, the side of the offset plate away from the rubber rod is fixedly connected to the baffle plate, and there is a distance between the rubber rod and the shell.

[0015] Optionally, an electromagnetic transmission assembly is fixedly installed inside the shell, and a releaser is fixedly installed inside the shell.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model increases the temperature inside the shell, and the magnetic force of the electromagnet decreases and is smaller than the gravity of the metal sheet and the shielding plate. Under the action of gravity, the shielding plate opens the heat dissipation port for ventilation to reduce the temperature inside the shell. When the temperature inside the shell is normal, the magnetic force of the electromagnet is greater than the gravity of the metal sheet and the shielding plate. At this time, the shielding plate blocks the heat dissipation port and is opened when cooling is required to prevent dust from continuously entering the heat dissipation port when it is always open.

[0018] Furthermore, when the shielding plate moves downward to open the heat dissipation port, the rubber rod and the shielding plate move synchronously, and the rubber rod and the fur rub against each other to generate static electricity, which electrostatically adsorbs dust in the wind entering the heat dissipation port, thereby reducing the amount of dust entering when the heat dissipation port is opened for ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall main structure of an embodiment of the utility model is given;

[0020] Figure 2 A schematic front and cross-sectional view of a side shell structure of an embodiment of the utility model is given;

[0021] Figure 3 A schematic diagram of the shielding plate structure of an embodiment of the utility model is given;

[0022] Figure 4 A schematic top view and cross-sectional view of a shell structure of an embodiment of the utility model is given.

[0023] Figure numerals: 1. Shell; 2. Auxiliary circuit assembly; 3. Auxiliary module assembly; 4. Knob; 5. Electromagnetic transmission assembly; 6. Release; 7. Shielding assembly; 71. Side shell; 72. Electromagnet; 73. Metal sheet; 74. Buffer pad; 75. Guide rod; 76. Shielding plate; 77. Heat dissipation port; 8. Adsorption assembly; 81. Rubber rod; 82. Fixing ring; 83. Fur. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1

[0030] This embodiment proposes a control and protection switch electrical appliance, such as Figure 1 and 4As shown, it includes a shell 1, an auxiliary circuit assembly 2 and an auxiliary module assembly 3 are fixedly installed on the right side of the shell 1, a knob 4 is rotatably connected to the front of the shell 1, an electromagnetic transmission assembly 5 is fixedly installed inside the shell 1, and a releaser 6 is fixedly installed inside the shell 1.

[0031] like Figure 2 and 3 As shown, a shielding assembly 7 is provided on the side of the shell 1, and the shielding assembly 7 includes a side shell 71, an electromagnet 72, a metal sheet 73, a shielding plate 76 and a heat dissipation port 77. The side shell 71 is fixedly installed on the side of the shell 1, and the electromagnet 72 is fixedly installed inside the side shell 71. The electromagnet 72 includes an iron core and wires inside the control and protection switch electrical appliance. The control and protection switch electrical appliance itself uses its own wires to generate magnetism, and no additional power connection is required.

[0032] like Figure 3 As shown, a metal sheet 73 is slidably connected inside the side shell 71 and located on the extension line of the electromagnet 72, a shielding plate 76 is provided on the side of the metal sheet 73, a heat dissipation port 77 is provided on the side of the housing 1 and located on the same side of the side shell 71, and the shielding plate 76 covers the heat dissipation port 77. The shielding plate 76 is parallel to the side of the housing 1, and the shielding plate 76 slides on the side of the housing 1.

[0033] As the temperature inside the shell 1 rises, the resistance of the wires of the control and protection switch electrical appliance itself increases, and its current decreases. When the magnetic force of the electromagnet 72 is less than the gravity of the metal sheet 73 and the baffle 76, the baffle 76 is moved away from the heat dissipation port 77, thereby opening the heat dissipation port 77 for ventilation to reduce the temperature inside the shell 1; when the temperature inside the shell 1 decreases, when the magnetic force of the electromagnet 72 is greater than the gravity of the metal sheet 73 and the baffle 76, the baffle 76 can be attracted upward, so that the baffle 76 blocks the heat dissipation port 77 to prevent dust from entering, and when cooling is needed, the baffle 76 is moved downward to open the heat dissipation port 77 for ventilation.

[0034] like Figure 3 As shown, two symmetrically arranged buffer pads 74 are fixedly installed inside the side shell 71, and the buffer pads 74 are located between the electromagnet 72 and the metal sheet 73 to prevent the metal sheet 73 from moving up and hitting the electromagnet 72. A guide rod 75 is fixedly installed between the buffer pad 74 and the side shell 71, and the metal sheet 73 slides on the rod body of the guide rod 75. The guide rod 75 guides the metal sheet 73 to prevent it from tilting, resulting in the shielding plate 76 and the heat dissipation port 77 not fitting tightly.

[0035] In this embodiment, the temperature inside the shell 1 increases, resulting in an increase in the wire resistance of the control and protection switch electrical appliance and a decrease in its current. When the magnetic force of the electromagnet 72 is smaller than the gravity of the metal sheet 73 and the baffle 76, the baffle 76 is moved away from the heat dissipation port 77 under the action of gravity, thereby opening the heat dissipation port 77 for ventilation to reduce the temperature inside the shell 1. When the temperature inside the shell 1 is normal, the magnetic force of the electromagnet 72 is larger than the gravity of the metal sheet 73 and the baffle 76. At this time, the baffle 76 blocks the heat dissipation port 77 to prevent dust from entering.

[0036] Example 2

[0037] Based on the first embodiment, this embodiment proposes a control and protection switch electrical appliance, such as Figure 3 As shown, an adsorption assembly 8 is provided between the metal sheet 73 and the shielding plate 76, and the adsorption assembly 8 includes a rubber rod 81, a fixing ring 82 and fur 83. The end of the rubber rod 81 is fixedly connected to the metal sheet 73, the fixing ring 82 is fixedly installed on the side of the shell 1, the rubber rod 81 penetrates the fixing ring 82, and the fur 83 is fixedly installed at the position where the fixing ring 82 contacts the rubber rod 81. The temperature inside the shell 1 rises, so that the electromagnetic force of the electromagnet 72 decreases, so that the metal sheet 73, the shielding plate 76 and the rubber rod 81 move downward, and the friction between the rubber rod 81 and the fur 83 generates static electricity.

[0038] The rubber rod 81 passes through the inside of the side shell 71, and the rubber rod 81 is parallel to the baffle plate 76. An offset plate is fixedly installed at the end of the rubber rod 81. The side of the offset plate away from the rubber rod 81 is fixedly connected to the baffle plate 76. The offset plate offsets the rubber rod 81 from the baffle plate 76 so that there is a distance between the rubber rod 81 and the shell 1 to prevent the rubber rod 81 from affecting the ventilation of the heat dissipation port 77. The rubber rod 81 is located at the heat dissipation port 77 to electrostatically adsorb dust entering the heat dissipation port 77.

[0039] In this embodiment, when the baffle plate 76 moves downward to open the heat dissipation port 77, the rubber rod 81 moves synchronously with the baffle plate 76, and the rubber rod 81 and the fur 83 rub against each other to generate static electricity. The static electricity electrostatically adsorbs dust in the wind entering the heat dissipation port 77, thereby reducing the amount of dust entering when the heat dissipation port 77 is opened for ventilation.

[0040] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. Control and protection switch electrical appliance, characterized in that: include: A housing (1), wherein an auxiliary circuit assembly (2) and an auxiliary module assembly (3) are fixedly mounted on the right side of the housing (1), and a knob (4) is rotatably connected to the front side of the housing (1); A shielding component (7) comprises a side shell (71), an electromagnet (72), a metal sheet (73), a shielding plate (76) and a heat dissipation port (77); the electromagnet (72) is fixedly mounted inside the side shell (71); the metal sheet (73) is slidably connected inside the side shell (71) and located on the extension line of the electromagnet (72); an adsorption component (8) is arranged on the side of the metal sheet (73); and a shielding plate (76) is arranged on the side of the adsorption component (8) away from the metal sheet (73); The side shell (71) is fixedly mounted on the side of the shell (1); a heat dissipation opening (77) is provided on the side of the shell (1) and on the same side as the side shell (71); the shielding plate (76) covers the heat dissipation opening (77); and the electromagnet (72) comprises an iron core and wires inside a control and protection switch electrical appliance.

2. The control and protection switch electrical device according to claim 1, characterized in that: Two symmetrically arranged buffer pads (74) are fixedly mounted inside the side shell (71), and the buffer pads (74) are located between the electromagnet (72) and the metal sheet (73).

3. The control and protection switch electrical device according to claim 1, characterized in that: The shielding plate (76) is parallel to the side of the shell (1), and the shielding plate (76) slides on the side of the shell (1).

4. The control and protection switch electrical device according to claim 2, characterized in that: A guide rod (75) is fixedly installed between the buffer pad (74) and the side shell (71), and the metal sheet (73) slides on the body of the guide rod (75).

5. The control and protection switch electrical apparatus according to claim 1, characterized in that: The adsorption component (8) includes a rubber rod (81), a fixing ring (82) and fur (83), the end of the rubber rod (81) is fixedly connected to the metal sheet (73), the fixing ring (82) is fixedly installed on the side of the shell (1), the rubber rod (81) passes through the fixing ring (82), and the fur (83) is fixedly installed at the position where the fixing ring (82) contacts the rubber rod (81).

6. The control and protection switch electrical apparatus according to claim 5, characterized in that: The rubber rod (81) passes through the interior of the side shell (71), the rubber rod (81) and the shielding plate (76) are parallel to each other, a dislocation plate is fixedly mounted on the end of the rubber rod (81), a side of the dislocation plate away from the rubber rod (81) is fixedly connected to the shielding plate (76), and a spacing exists between the rubber rod (81) and the shell (1).

7. The control and protection switch electrical device according to claim 1, characterized in that: An electromagnetic transmission assembly (5) is fixedly installed inside the housing (1), and a release (6) is fixedly installed inside the housing (1).

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