Magnetic control type electric control switch

Abstract

The utility model provides a magnetic control type electric control switch, which belongs to the technical field of switches and comprises a magnetic control circuit, the magnetic control circuit comprises a coil and at least two magnetic control switches arranged in the coil, the magnetic control switches adopt reed switches, the coil comprises a power connection end and generates a magnetic field when the power connection end is electrified, and the magnetic control switches are electrically connected with the coil. The magnetic control switch has an on state and an off state and realizes state switching under the action of the magnetic field of the coil, and the plurality of reed switches are connected in series or in parallel or in series and parallel; according to the utility model, the control circuit in which the reed switches are arranged in the coil is adopted, so that the diversified control requirements of the existing circuit can be met, the plurality of reed switches can be adaptively connected according to the requirements, the miniaturization of the product is more facilitated, and the overall cost of the product is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a magnetically controlled electric switch. Background Art

[0002] Electronic switches are used to control the opening and closing of high-power or high-voltage circuits. They are often used in situations that require remote control or automated control, such as home automation, industrial control systems, power systems, and communication equipment. With the development of electronic technology, electronic switches play an increasingly important role in achieving more intelligent and automated circuit designs. At the same time, future electronic switches will develop in the direction of being smaller, more economical, and more intelligent.

[0003] Relay is a commonly used electric control switch, usually used in automated control circuits. It is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. However, the use of traditional relays cannot meet the diverse control requirements of existing circuits. For example, when controlling multiple circuits, multiple relays need to be used in parallel. For another example, when the withstand voltage requirement of the electric control switch in the circuit is increased, multiple relays need to be used in series. If the existing relays are used to solve the above problems, the overall volume of the product will increase, the required installation space will increase, and the cost of the product will also increase. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a magnetically controlled electric switch.

[0005] The technical solution adopted by the utility model is as follows: a magnetically controlled electric switch, including a magnetically controlled circuit, the magnetically controlled circuit including a coil and at least two magnetically controlled switches arranged in the coil, the magnetically controlled switch using a reed switch, the coil including an electrical connection end, and generating a magnetic field when the electrical connection end is energized, the magnetically controlled switch having a circuit-connected state and a circuit-disconnected state, and realizing state switching under the action of the magnetic field of the coil, and a plurality of the reed switches are connected in series, in parallel, or in mixed connection.

[0006] It is further configured that the reed switch includes a tube body and a reed, and a positioning protrusion is provided on the outer wall of the tube body along the state switching direction.

[0007] It is further configured that the magnetic control circuit is connected to a rectifier bridge, and the rectifier bridge is used to make the connection terminals of the reed switch not to distinguish polarity.

[0008] It is further configured that the coil is connected to a resistor to reduce the number of turns required for the coil.

[0009] It is further configured that an anti-static tube is provided between the coil and the reed switch, and the anti-static tube is connected to a ground terminal.

[0010] It is further configured that an electromagnetic shielding cover is provided outside the magnetron circuit.

[0011] It is further configured to include a shell and a coil frame arranged in the shell, a coil is wound on the coil frame, and an installation channel is arranged on it along the axial direction of the coil, a plurality of reed switches are evenly distributed along the circumference of the installation channel, a circuit frame made of a PCB board is arranged outside the coil frame, and connected circuits are printed on it, the coil frame is fixed in the circuit frame, and the reed switch and the coil are both connected to the circuit frame.

[0012] It is further configured that the shell includes a base and an upper shell, the base and the upper shell are connected by a snap-fit ​​structure, the bottom plate of the circuit frame is arranged on the base, the snap-fit ​​structure connection includes at least two snap-fitting protrusions arranged on two opposite side walls of the base and a snap-fitting interface arranged on the upper shell and adapted to the snap-fitting protrusions, a first inclined surface is arranged at the upper end of the snap-fitting protrusion, the first inclined surface is arranged on the upper part of the snap-fitting protrusion and the upper side is inclined toward the inside of the base, and a contact plane is arranged at the lower end of the snap-fitting protrusion.

[0013] It is further configured that the shell includes a base and an upper shell, the circuit frame is composed of a bottom circuit board, a top circuit board and two side circuit boards, a first opening is provided in the middle of the base, the reed sheet connecting the reed switch and the bottom circuit board is within the positive projection range of the first opening along the height direction of the shell, and a filling block is provided in the first opening.

[0014] It is further configured that a second opening is provided on the bottom circuit board, the second opening is located within the orthographic projection range of the first opening along the height direction of the shell, and the positioning protrusion is at least partially located within the orthographic projection range of the second opening along the height direction of the shell.

[0015] The beneficial effects of the present invention are as follows: the control circuit of the coil with built-in reed switch adopted in the present invention can meet the diversified control requirements of the existing circuits, and multiple reed switches can be adaptively connected according to the requirements, which is more conducive to the miniaturization of the product and reduces the overall cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0017] Figure 1 This is a partial structural diagram of the magnetically controlled electric switch in the utility model. Figure 1 ;

[0018] Figure 2 It is a cross-sectional view of the magnetically controlled electric switch in the utility model;

[0019] Figure 3 It is an exploded view of the magnetically controlled electric switch in the utility model;

[0020] Figure 4 It is a partial structural cross-sectional view of the magnetically controlled electric switch in the utility model;

[0021] Figure 5 It is a partial schematic diagram of the magnetically controlled electric switch in the utility model;

[0022] Figure 6 This is a partial structural diagram of the magnetically controlled electric switch in the utility model. Figure 2 . DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the description of this application, it should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0027] Embodiment 1:

[0028] like Figures 1 to 6 As shown, a magnetically controlled electric switch includes a magnetically controlled circuit, wherein the magnetically controlled circuit includes a coil 1 and at least two magnetically controlled switches arranged in the coil 1, wherein the magnetically controlled switch adopts a reed switch 2, wherein the coil 1 includes an electrical connection terminal and generates a magnetic field when the electrical connection terminal is energized, wherein the magnetically controlled switch has a circuit-connected state and a circuit-disconnected state, and realizes state switching under the action of the magnetic field of the coil 1. By adopting a control circuit with a reed switch 2 built in the coil 1, the diversified control requirements of the existing circuit can be met, and a plurality of reed switches 2 can be adaptively connected according to the requirements, which is more conducive to the miniaturization of the product and reduces the overall cost of the product.

[0029] A plurality of the reed switches 2 are connected in series, in parallel or in a mixed connection. Specifically, the reed switches 2 can be adaptively connected according to different control requirements of the circuit. In the present embodiment, four reed switches 2 are connected in parallel, which can improve the load capacity and reliability of the reed switch 2 relay. If connected in series, the resistance values ​​of the plurality of reed switches 2 connected in series can be accumulated to increase the total resistance value, thereby increasing the withstand voltage value of the electric control switch. If mixed connection is adopted, for example, two reed switches 2 are first connected in series to form a reed switch 2 assembly, and then the two reed switch 2 assemblies are connected in parallel. This can also improve the withstand voltage value and reliability of the electric control switch.

[0030] Furthermore, the reed switch 2 includes a tube body 21 and a reed 22. The traditional reed switch 2 has a normally open type, a normally closed type and a conversion type. In the present embodiment, the reed 22 includes a normally open contact, a normally closed contact and a common end contact. The outer wall of the tube body 21 is provided with a positioning protrusion 211 along the state switching direction. The positioning protrusion 211 can assist in quickly and accurately positioning the reed 22, ensuring that the installation angle of the reed switch 2 in the magnetic field of the coil 1 is correct, and is conducive to realizing automated assembly.

[0031] It also includes a shell 3 and a coil skeleton 4 arranged in the shell 3, a coil 1 is wound on the coil skeleton 4, and an installation channel 41 is arranged on it along the axial direction of the coil 1, and a plurality of reed switches 2 are evenly distributed along the circumference of the installation channel 41, a circuit frame 5 made of a PCB board is arranged outside the coil skeleton 4, and connected circuits are printed on it, the circuit frame 5 is composed of a bottom circuit board 51, a top circuit board 52 and two side circuit boards 53, and is a square frame, the coil skeleton 4 is fixed in the circuit frame 5, the reed switch 2 and the coil 1 are both connected to the circuit frame 5, the circuit frame 5 is formed by using multiple circuit boards, and connected circuits are printed on the circuit frame 5 to replace the traditional wiring method, which can save the wiring inside the product, thereby facilitating the miniaturization of the relay, and it is more convenient to install functional modules on the circuit frame 5, which is conducive to the realization of diversified product functions.

[0032] Furthermore, the magnetic control circuit is connected to a rectifier bridge 6, and the rectifier bridge 6 is used to make the connection terminals of the reed switch 2 not need to distinguish polarity. Usually, the rectifier bridge 6 only needs to be connected in series in the loop. Technical personnel in this field can adjust the connection according to the actual loop. The rectifier bridge 6 is arranged on the circuit frame 5. In this embodiment, the rectifier bridge 6 is arranged on the side circuit board 53, so that the wiring of the reed switch 2 is more convenient and the difficulty of wiring is reduced.

[0033] Furthermore, the coil 1 is connected to a resistor 7 for reducing the number of turns required for the coil 1. Those skilled in the art can adapt the connection according to the actual circuit, generally using a series voltage divider. The resistor 7 is arranged on the circuit frame 5. In this embodiment, the resistor 7 and the power terminal are connected to the same side of the circuit board 53, thereby further reducing the overall volume of the product and reducing the assembly time of the product.

[0034] Furthermore, an anti-static tube 8 is arranged between the coil 1 and the reed switch 2. The anti-static tube 8 is connected to a grounding end. The anti-static tube 8 is made of conductive material. Since static electricity is generated when the coil 1 is energized, the static electricity is grounded through the anti-static tube 8, which can reduce the static electricity damage to the reed switch 2 and significantly improve the stability and reliability of the product.

[0035] Specifically, the coil skeleton 4 includes an upper plate portion 401, a middle cylinder portion 402 and a lower plate portion 403, and the anti-static cylinder 8 includes an upper cylinder portion 801, a middle plate portion 802 and a lower cylinder portion 803. The outer diameter of the lower cylinder portion 803 is smaller than the inner diameter of the installation channel 41, and the outer diameter of the middle plate portion 802 is larger than the inner diameter of the installation channel 41. During assembly, only the lower cylinder portion 803 needs to be inserted into the installation channel 41.

[0036] The axial length of the lower barrel portion 803 is not less than the axial length of the installation channel 41 , thereby effectively protecting the reed switch 2 in the coil 1 .

[0037] The upper end of the upper cylinder portion 801 is connected to the top circuit board 52, and the closed upper end can better protect the internal reed switch 2.

[0038] Furthermore, an electromagnetic shielding cover 9 is provided outside the magnetron circuit. The electromagnetic shielding cover 9 can be a separate cover body, which is made of metal material, such as copper, aluminum, steel, etc., or made of conductive plastic, that is, plastic with conductive fillers (such as carbon fiber, carbon black or metal powder) added, which is light and easy to form.

[0039] The electromagnetic shielding cover 9 is arranged between the shell 3 and the circuit frame 5. The electromagnetic shielding cover 9 can effectively shield external electromagnetic interference and avoid interference with the magnetic field of the coil 1, thereby ensuring the stability and reliability of the action of the reed switch 2. Gaps are arranged between the electromagnetic shielding cover 9 and the shell 3 and between the electromagnetic shielding cover 9 and the circuit frame 5, which can further isolate electromagnetic interference and prevent the propagation of electromagnetic noise. At the same time, the gap can also serve as a channel for heat dissipation, which helps to disperse the internal heat of the product and prevent overheating.

[0040] Of course, the electromagnetic shielding cover 9 can be integrated with the housing 3, for example, a conductive paint layer is provided on the inner wall of the housing 3, or a metal foil or metal braid is provided.

[0041] Furthermore, the shell 3 includes a base 31 and an upper shell 32, and the base 31 and the upper shell 32 are connected by a snap-fit ​​structure. The bottom plate of the circuit frame 5 is arranged on the base 31, and the snap-fit ​​structure connection includes at least two snap-fitting protrusions 311 arranged on two opposite side walls of the base 31 and a snap-fitting interface 321 arranged on the upper shell 32 and adapted to the snap-fitting protrusions 311. The upper end of the snap-fitting protrusion 311 is provided with a first inclined surface 312, and the first inclined surface 312 is provided on the upper part of the snap-fitting protrusion 311 and the upper side is inclined toward the base 31. The lower end of the snap-fitting protrusion 311 is provided with an abutting plane 313, so that the base 31 and the upper shell 32 are snapped together more smoothly, and the connection is more stable after snapping together.

[0042] Furthermore, a first opening 301 is provided in the middle of the base 31, and the reed 22 connecting the reed switch 2 and the bottom circuit board 51 is within the positive projection range of the first opening 301 along the height direction of the shell 3, so that the reed 22 and the bottom circuit board 51 can be welded through the first opening 301, which is convenient for realizing automated assembly, thereby improving the assembly efficiency of the product.

[0043] A filling block 10 is arranged in the first opening 301, and snap-in grooves 3011 are arranged on the inner walls on both sides of the first opening 301. Snap-in ears 1001 are arranged on both sides of the filling block 10, and the snap-in ears 1001 are arranged with guiding inclined surfaces toward the inside of the shell 3, so that the filling block 10 can be installed into the first opening 301 from bottom to top.

[0044] The bottom circuit board 51 is provided with a second opening 511, and the second opening 511 is located within the orthographic projection range of the first opening 301 along the height direction of the shell 3. The positioning protrusion 211 is at least partially located within the orthographic projection range of the second opening 511 along the height direction of the shell 3. In this embodiment, the first opening 301 is a square opening, and the second opening 511 is a circular hole.

[0045] Through the above arrangement, if one of the reed switches 2 rotates during use due to an unstable connection with the circuit frame 5, causing the reed switch 2 to be unable to perform the expected action, the second opening 511 can be used for observation and timely maintenance. Secondly, during automated assembly, the first opening 301 and the second opening 511 allow positioning tooling to pass through and position multiple reed switches 2, making it easier to weld the reed 22 of the reed switch 2 to the circuit frame 5. Generally, at this time, the center of the first opening 301 and the second opening 511 are on the same axial direction as the assembly center of the multiple reed switches 2. In addition, the second opening 511 can also serve as a heat dissipation port.

[0046] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A magnetically controlled electric switch, characterized in that: The invention comprises a magnetic control circuit, which comprises a coil and at least two magnetic control switches arranged in the coil. The magnetic control switch adopts a reed switch. The coil comprises a power connection end, and generates a magnetic field when the power connection end is energized. The magnetic control switch has a circuit state and a circuit break state, and realizes state switching under the action of the coil magnetic field. A plurality of reed switches are connected in series, in parallel or in mixed connection.

2. A magnetically controlled electric switch according to claim 1, characterized in that: The reed switch comprises a tube body and a reed, and a positioning protrusion is arranged on the outer wall of the tube body along the state switching direction.

3. A magnetically controlled electric switch according to claim 1, characterized in that: The magnetic control circuit is connected to a rectifier bridge, and the rectifier bridge is used to make the connection terminals of the reed switch not to distinguish polarity.

4. A magnetically controlled electric switch according to claim 1 or 3, characterized in that: The coil is connected with a resistor to reduce the number of turns required for the coil.

5. The magnetically controlled electric switch according to claim 1, characterized in that: An anti-static tube is arranged between the coil and the reed switch, and the anti-static tube is connected to a grounding terminal.

6. A magnetically controlled electric switch according to claim 1 or 5, characterized in that: An electromagnetic shielding cover is arranged outside the magnetron circuit.

7. A magnetically controlled electric switch according to claim 2, characterized in that: It also includes a shell and a coil frame arranged in the shell, a coil is wound on the coil frame, and an installation channel is arranged on it along the axial direction of the coil, a plurality of reed switches are evenly distributed along the circumference of the installation channel, a circuit frame made of a PCB board is arranged outside the coil frame, and connected circuits are printed on it, the coil frame is fixed in the circuit frame, and the reed switch and the coil are connected to the circuit frame.

8. A magnetically controlled electric switch according to claim 7, characterized in that: The shell includes a base and an upper shell, and the base and the upper shell are connected by a snap-fit ​​structure. The bottom plate of the circuit frame is arranged on the base. The snap-fit ​​structure connection includes at least two snap-fitting protrusions arranged on two opposite side walls of the base and a snap-fitting interface arranged on the upper shell and adapted to the snap-fitting protrusions. The upper end of the snap-fitting protrusion is provided with a first inclined surface, and the first inclined surface is provided on the upper part of the snap-fitting protrusion and the upper side is inclined toward the base. The lower end of the snap-fitting protrusion is provided with an abutting plane.

9. The magnetically controlled electric switch according to claim 7, characterized in that: The shell includes a base and an upper shell, the circuit frame is composed of a bottom circuit board, a top circuit board and two side circuit boards, a first opening is provided in the middle of the base, the reed sheet connecting the reed switch and the bottom circuit board is within the positive projection range of the first opening along the height direction of the shell, and a filling block is provided in the first opening.

10. A magnetically controlled electric switch according to claim 9, characterized in that: The bottom circuit board is provided with a second opening, the second opening is located within the orthographic projection range of the first opening along the height direction of the shell, and the positioning protrusion is at least partially located within the orthographic projection range of the second opening along the height direction of the shell.

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