Low frequency power transformer

Abstract

This utility model relates to the field of low-frequency power transformer technology and discloses a low-frequency power transformer, including a transformer mechanism. The transformer mechanism includes a first electromagnetic coil and a second battery coil, which are stacked together. Terminals are fixedly connected to the sides of both the first electromagnetic coil and the second battery coil. This low-frequency power transformer, by stacking the first electromagnetic coil and the second battery coil and connecting them with a metal guide rod, allows the second battery coil to operate independently during normal use. When voltage adjustment is needed, pressing the ceramic plate limits the trigger switch downwards, causing the metal contact rod to contact the conductive part of the first electromagnetic coil, thus forming an electrical connection between the first electromagnetic coil and the second battery coil, achieving convenient voltage adjustment.

Description

Technical Field

[0001] This utility model relates to the field of low-frequency power transformer technology, specifically a low-frequency power transformer. Background Technology

[0002] Low-frequency power transformers, including electromagnetic compatibility components, rectifier circuits, and inverters, primarily achieve voltage transformation through their internal electromagnetic coils.

[0003] Existing low-frequency power transformers have a lead-out pin on each coil. When the power needs to be changed, different numbers of electromagnetic coils are connected by connecting different leads. Therefore, the wiring needs to be rewired every time the voltage is changed, which is very troublesome.

[0004] Therefore, this application proposes a low-frequency power transformer that uses a trigger switch to change the number of electromagnetic coils connected, thereby achieving convenient transformer operation. Utility Model Content

[0005] The purpose of this invention is to provide a low-frequency power transformer to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a low-frequency power transformer, including a transformer mechanism, the transformer mechanism including a first electromagnetic coil and a second battery coil, the first electromagnetic coil and the second battery coil are stacked together, and the sides of the first electromagnetic coil and the second battery coil are fixedly connected with terminals. The top of the second battery coil is equipped with a voltage switching mechanism that can move up and down. When the voltage switching mechanism moves down, it electrically connects the first electromagnetic coil and the second battery coil. The voltage switching mechanism includes a ceramic plate, which is placed above the second battery coil. A metal guide rod is fixedly connected to the bottom of the ceramic plate. The metal guide rod passes through the wiring terminal on the side of the second battery coil. A metal contact rod is fixedly connected to the bottom of the metal guide rod. A ceramic rod is fixedly connected to the bottom of the metal contact rod. The metal contact rod is located above the wiring terminal on the side of the first electromagnetic coil. The ceramic rod passes through the wiring terminal on the side of the first electromagnetic coil. An elastic element is sleeved on the outer surface of the metal guide rod. The elastic element is located between the side terminal of the second battery coil and the ceramic plate. A terminal post is fixedly connected to the top of the ceramic plate. The terminal post is electrically connected to the metal guide rod. A trigger switch is installed on the axis at the bottom of the ceramic plate. The trigger switch limits the height of the ceramic plate by pressing and rebounding, thereby changing the way the circuit is connected.

[0007] Preferably, the number of metal guide rods is four, the four metal guide rods are arranged in a rectangular shape, and the outer surface of the metal guide rods is a smooth surface.

[0008] Preferably, the diameter of the metal contact rod is larger than the diameter of the metal guide rod, and after the ceramic plate is pressed down, the bottom of the metal contact rod overlaps with the top of the side terminal of the first electromagnetic coil.

[0009] Preferably, the diameter of the ceramic rod is equal to the diameter of the metal guide rod, and the ceramic rod is completely insulated.

[0010] Preferably, the trigger switch includes a support rod and a hinge rod, the support rod being fixedly connected to the top of the second battery coil, and the hinge rod being fixedly connected to the bottom of the ceramic plate; A limit cap is fixedly connected to the top of the support rod, and a hook is hinged to the bottom of the hinge rod; The hook is engaged with the limiting cap.

[0011] Preferably, the outer surface of the ceramic plate is fitted with a movable cap that can move up and down, wherein the limiting cap is a positive cone shape and the movable cap is a negative cone shape.

[0012] Preferably, one of the terminals or metal contacts is deformable, and the deformable portion of the terminal or metal contact has resilience.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are: First, this utility model superimposes a first electromagnetic coil and a second battery coil, and connects the first electromagnetic coil and the second battery coil by setting a metal guide rod. When in normal use, the upper second battery coil works independently. When the voltage needs to be adjusted, pressing the ceramic plate limits the trigger switch downward, thereby making the metal contact rod contact the conductive part of the first electromagnetic coil, so that the first electromagnetic coil and the second battery coil form an electrical connection, achieving the effect of convenient voltage adjustment.

[0014] Secondly, this utility model uses a support rod, a limit cap, a movable cap, a hinge rod, and a hook to form a trigger switch. During use, when the hook first descends, it will hook onto the limit cap for positioning. When the hook is pressed down again, it will contact the bottom of the movable cap and drive the movable cap to rise and fit against the limit cap. At this time, the hook will unfold with the slope and cross the limit cap, so that the hook is no longer restricted, thus achieving the effect of conveniently locking the height of the metal guide rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the structure of this utility model; Figure 3 This is a side view of the structure of this utility model; Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0016] The components include: 1. Transformer mechanism; 101. First electromagnetic coil; 102. Second battery coil; 103. Terminal block; 2. Voltage switching mechanism; 201. Ceramic plate; 202. Metal guide rod; 203. Metal contact rod; 204. Ceramic rod; 205. Elastic element; 206. Trigger switch; 2061. Support rod; 2062. Limit cap; 2063. Movable cap; 2064. Hinge rod; 2065. Hook; 207. Terminal block. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 A low-frequency power transformer includes a transformer mechanism 1, which includes a first electromagnetic coil 101 and a second battery coil 102. The first electromagnetic coil 101 and the second battery coil 102 are stacked together, and terminals 103 are fixedly connected to the sides of both the first electromagnetic coil 101 and the second battery coil 102. A voltage switching mechanism 2 that can move up and down is installed on the top of the second battery coil 102. After the voltage switching mechanism 2 moves down, it electrically connects the first electromagnetic coil 101 and the second battery coil 102. The voltage switching mechanism 2 includes a ceramic plate 201, which is placed above the second battery coil 102. A metal guide rod 202 is fixedly connected to the bottom of the ceramic plate 201. The metal guide rod 202 passes through the wiring terminal 103 on the side of the second battery coil 102. A metal contact rod 203 is fixedly connected to the bottom of the metal guide rod 202. A ceramic rod 204 is fixedly connected to the bottom of the metal contact rod 203. The metal contact rod 203 is located above the wiring terminal 103 on the side of the first electromagnetic coil 101. The ceramic rod 204 passes through the wiring terminal 103 on the side of the first electromagnetic coil 101. An elastic element 205 is sleeved on the outer surface of the metal guide rod 202. The elastic element 205 is located between the side terminal 103 of the second battery coil 102 and the ceramic plate 201. A terminal post 207 is fixedly connected to the top of the ceramic plate 201. The terminal post 207 is electrically connected to the metal guide rod 202 and is also connected to an external circuit. A trigger switch 206 is mounted on the shaft at the bottom of the ceramic plate 201. The trigger switch 206 limits the height of the ceramic plate 201 by pressing and rebounding, so as to change the way the circuit is connected. Furthermore, the device described in this application requires an outer casing during actual assembly to protect the device's safety.

[0019] Through the above technical solution, the first electromagnetic coil 101 and the second battery coil 102 are superimposed, and the first electromagnetic coil 101 and the second battery coil 102 are connected by a metal guide rod 202. When in normal use, the upper second battery coil 102 works independently. When the voltage needs to be adjusted, the ceramic plate 201 is pressed to limit the trigger switch 206 downward, so that the metal contact rod 203 contacts the conductive part of the first electromagnetic coil 101, so that the first electromagnetic coil 101 and the second battery coil 102 are electrically connected, thus achieving the effect of convenient voltage adjustment. Whether the first electromagnetic coil 101 and the second battery coil 102 are ultimately connected in series or in parallel depends on the actual needs of changing the wiring method between the first electromagnetic coil 101 and the second battery coil 102. This application mainly provides a circuit conversion scheme.

[0020] Specifically, there are four metal guide rods 202, which are arranged in a rectangular shape, and the outer surface of each metal guide rod 202 is smooth.

[0021] By using the above technical solution, the stability of the ceramic plate 201 can be greatly improved by setting four metal guide rods 202. The outer surface of the metal guide rods 202 is set to be smooth, so that the metal guide rods 202 can move smoothly in the terminal 103 and maintain stable contact with the inner wall of the terminal 103.

[0022] Specifically, the diameter of the metal contact rod 203 is larger than the diameter of the metal guide rod 202. After the ceramic plate 201 is pressed down, the bottom of the metal contact rod 203 overlaps with the top of the side terminal 103 of the first electromagnetic coil 101.

[0023] By using the above technical solution, the diameter of the metal contact rod 203 is set so that after the metal guide rod 202 is pressed down, the metal contact rod 203 can make contact with the terminal 103 on the first electromagnetic coil 101 with the largest contact area to achieve conductivity, thereby realizing the electrical connection between the first electromagnetic coil 101 and the second battery coil 102.

[0024] Specifically, the diameter of the ceramic rod 204 is equal to the diameter of the metal guide rod 202, and the ceramic rod 204 is completely insulated.

[0025] The diameter of the ceramic rod 204 is set to fit snugly against the terminal 103 on the first electromagnetic coil 101, thereby avoiding gaps that could cause the ceramic rod 204 to wobble. The purpose of the insulation of the ceramic rod 204 is to separate the first electromagnetic coil 101 and the second battery coil 102, so that the second battery coil 102 is used normally.

[0026] Specifically, the trigger switch 206 includes a support rod 2061 and a hinge rod 2064. The support rod 2061 is fixedly connected to the top of the second battery coil 102, and the hinge rod 2064 is fixedly connected to the bottom of the ceramic plate 201. The top of the support rod 2061 is fixedly connected to a limit cap 2062, and the bottom of the hinge rod 2064 is hinged to a hook 2065. Hook 2065 is interlocked with limit cap 2062.

[0027] With the above technical solution, when the hinge rod 2064 descends with the ceramic plate 201, the hook 2065 will contact the top of the limit cap 2062 and be squeezed open. The opened hook 2065 will contact the support rod 2061 during the descent and be hung on the bottom of the limit cap 2062 to achieve positioning, ensuring that the metal contact rod 203 is in stable contact with the terminal 103 on the first electromagnetic coil 101.

[0028] Specifically, the outer surface of the ceramic plate 201 is fitted with a movable cap 2063 that can move up and down. The limiting cap 2062 is a positive cone shape, and the movable cap 2063 is a negative cone shape.

[0029] With the above technical solution, when the hook 2065 is pressed down again, the hook 2065 will contact the bottom of the movable cap 2063 and drive the movable cap 2063 to rise and fit with the limit cap 2062. At this time, the hook 2065 will unfold with the slope and cross the limit cap 2062, so that the hook 2065 is no longer restricted.

[0030] Specifically, one of the terminal block 103 or the metal contact rod 203 is deformable, and the deformable part of the terminal block 103 or the metal contact rod 203 is resilient.

[0031] Through the above technical solution, one of the terminal 103 and the metal contact 203 is deformable. The purpose is that after the metal contact 203 contacts the terminal 103 on the first electromagnetic coil 101, the metal contact 203 still has room to move downward, so as to facilitate the trigger switch 206 to continue to press down to release the locked state. The purpose of the deformable part of the terminal 103 or the metal contact 203 having elasticity is to enable the terminal 103 or the metal contact 203 to return to the initial state after the pressure is lost, so as to wait for the next trigger.

[0032] In use, the first electromagnetic coil 101 and the second battery coil 102 are superimposed, and the first electromagnetic coil 101 and the second battery coil 102 are connected by a metal guide rod 202. When in normal use, the upper second battery coil 102 works independently. When the voltage needs to be adjusted, the ceramic plate 201 is pressed to limit the trigger switch 206 downward, so that the metal contact rod 203 contacts the conductive part of the first electromagnetic coil 101, so that the first electromagnetic coil 101 and the second battery coil 102 are electrically connected, thus achieving the effect of convenient voltage adjustment. The trigger switch 206 is composed of a support rod 2061, a limit cap 2062, a movable cap 2063, a hinge rod 2064, and a hook 2065. During use, when the hook 2065 first descends, it will hook onto the limit cap 2062 for positioning. When the hook 2065 is pressed down again, it will contact the bottom of the movable cap 2063 and drive the movable cap 2063 to rise and fit against the limit cap 2062. At this time, the hook 2065 will unfold with the slope and cross the limit cap 2062, so that the hook 2065 is no longer restricted, thus achieving the effect of conveniently locking the height of the metal guide rod 202.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-frequency power transformer, comprising a transformer mechanism (1), the transformer mechanism (1) comprising a first electromagnetic coil (101) and a second battery coil (102), the first electromagnetic coil (101) and the second battery coil (102) being stacked together, and a wiring terminal (103) being fixedly connected to the side of the first electromagnetic coil (101) and the second battery coil (102); Characterized in that: a voltage switching mechanism (2) capable of moving up and down is mounted on the top of the second battery coil (102), and the voltage switching mechanism (2) is electrically connected to the first electromagnetic coil (101) and the second battery coil (102) after moving downward; the voltage switching mechanism (2) comprises a ceramic plate (201), the ceramic plate (201) is arranged above the second battery coil (102), a metal guide rod (202) is fixedly connected to the bottom of the ceramic plate (201), the metal guide rod (202) penetrates through the wiring terminal (103) on the side of the second battery coil (102), a metal contact rod (203) is fixedly connected to the bottom of the metal guide rod (202), a ceramic rod (204) is fixedly connected to the bottom of the metal contact rod (203), the metal contact rod (203) is arranged above the wiring terminal (103) on the side of the first electromagnetic coil (101), and the ceramic rod (204) penetrates through the wiring terminal (103) on the side of the first electromagnetic coil (101); an elastic member (205) is sleeved on the outer surface of the metal guide rod (202), the elastic member (205) is arranged between the wiring terminal (103) on the side of the second battery coil (102) and the ceramic plate (201), a wiring post (207) is fixedly connected to the top of the ceramic plate (201), and the wiring post (207) is electrically connected to the metal guide rod (202); a trigger switch (206) is mounted on the axis at the bottom of the ceramic plate (201), the trigger switch (206) limits the height of the ceramic plate (201) by pressing and rebounding, so that the mode of circuit connection is changed.

2. A low frequency power supply transformer as claimed in claim 1, characterized in that: The number of the metal guide rods (202) is four, the four metal guide rods (202) are arranged in a rectangular shape, and the outer surface of the metal guide rod (202) is smooth.

3. A low frequency power supply transformer as claimed in claim 1, characterized in that: The diameter of the metal contact rod (203) is greater than that of the metal guide rod (202), and the bottom of the metal contact rod (203) is overlapped with the top of the wiring terminal (103) on the side of the first electromagnetic coil (101) after the ceramic plate (201) is pressed downward.

4. A low frequency power supply transformer as claimed in claim 1, characterized in that: The diameter of the ceramic rod (204) is equal to that of the metal guide rod (202), and the ceramic rod (204) is completely insulated.

5. A low frequency power supply transformer as claimed in claim 1, characterized in that: The trigger switch (206) comprises a support rod (2061) and a hinged rod (2064), the support rod (2061) is fixedly connected to the top of the second battery coil (102), and the hinged rod (2064) is fixedly connected to the bottom of the ceramic plate (201); a limiting cap (2062) is fixedly connected to the top of the support rod (2061), and a hook (2065) is hinged to the bottom of the hinged rod (2064). The hook (2065) is buckled with the limiting cap (2062).

6. A low frequency power supply transformer as claimed in claim 5, characterized in that: The outer surface of the ceramic plate (201) is sleeved with a movable cap (2063) which can move up and down, the limiting cap (2062) is a positive taper, and the movable cap (2063) is a reverse taper.

7. A low frequency power supply transformer as claimed in claim 6, characterized in that: One of the wiring terminal (103) or the metal contact rod (203) has deformability, and the deformable part of the wiring terminal (103) or the metal contact rod (203) has resilience.

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