Portable transformer capable of adjusting voltage output gears

Abstract

The utility model provides a portable transformer capable of adjusting voltage output gears, which belongs to the technical field of transformer voltage regulation and comprises a transformer main body, the top of the transformer main body is sequentially provided with voltage regulating connectors connected with transformer taps, and the voltage regulating connectors are connected with the transformer taps. A butt joint shield fixed to the top of the transformer body is connected to the outside of the voltage regulating connector in a sleeving mode, an insulating column is arranged on the top of the butt joint shield in a penetrating mode, and a butt joint contact opposite to the voltage regulating connector is fixedly connected to the bottom end of the insulating column. The top of the butt joint shield is provided with a resettable pressing type locking assembly which independently drives each butt joint contact to be in butt joint with the voltage regulating connectors, output voltage is regulated according to the six voltage regulating connectors on each winding, that is, two voltage regulating connectors in a corresponding range are pressed, then the two voltage regulating connectors connected into transformer taps are connected through a conductive piece, and the two voltage regulating connectors are connected with the corresponding transformer taps. Compared with three-gear adjustment, the range of adaptive voltage can be narrowed, and the accuracy of the range where the voltage is located is improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer voltage regulation technology, specifically a convenient transformer with adjustable voltage output levels. Background Technology

[0002] The core principle of transformer voltage output level adjustment is to adjust the secondary output voltage by changing the turns ratio of the primary winding or secondary winding, so as to adapt to grid voltage fluctuations or load voltage requirements.

[0003] The connection points drawn from the transformer windings are directly electrically connected to the corresponding winding sections. By changing the connection positions of the taps, the number of winding turns involved in electromagnetic induction can be altered, thereby changing the voltage ratio and achieving voltage regulation.

[0004] The following problems were found in the relevant technology: the transformer taps are all located outside the coil. After the transformer is assembled, the tap changer is moved by turning the knob when adjusting the voltage. This method has limitations, and the adjustable range is relatively large. By directly connecting the taps, the voltage adjustment range can be reduced, and the voltage environment range can be more accurately adapted. To address this, we propose a new type of convenient transformer with adjustable voltage output levels.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the problem of transformer voltage level adjustment in the prior art, this utility model provides a convenient transformer with adjustable voltage output levels. It employs a point-contact structure electrically connected to the transformer taps combined with an openable outer casing to achieve convenient voltage adjustment. The specific technical solution is as follows:

[0007] A portable transformer with adjustable voltage output levels includes a transformer body. A voltage regulating connector connected to each transformer tap is sequentially arranged on the top of the transformer body. A mating cover fixed to the top of the transformer body is sleeved around the voltage regulating connector. An insulating column is provided through the top of the mating cover. A mating contact head opposite to the voltage regulating connector is fixed to the bottom end of the insulating column. A resettable push-lock assembly is provided on the top of the mating cover to independently drive each mating contact head to mate with the voltage regulating connector.

[0008] In the above technical solution, the resettable press-type locking assembly includes an outer cylinder fixed to the top of the docking cover, and the outer cylinder is sleeved on the outside of the insulating column. A support top seat is slidably disposed on the inner wall of the outer cylinder on the outer wall of the insulating column. An elastic element sleeved on the outer wall of the insulating column is disposed between the support top seat and the top of the docking cover. The top of the support top seat is provided with a rotary locking member for locking the state when the contact head and the pressure regulating joint are in contact.

[0009] The rotary locking component includes a rotary support rod rotatably mounted on the top of the support base. An operation button is fixedly connected to the top of the rotary support rod. A locking groove is provided on the outer wall of the outer cylinder. A locking element that engages with the locking groove is fixedly connected to the bottom of the operation button.

[0010] The locking groove is an L-shaped through groove, and the locking member is an L-shaped rod that engages perpendicularly with the locking groove.

[0011] A stabilizing clip is fixed to the end of the locking member away from the operation button.

[0012] The top of the docking cover is symmetrically rotatably connected to a cover door, and the cover door is provided with a buckle.

[0013] The transformer body has an embedded lead channel that connects to the voltage regulating connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are: this portable transformer with adjustable voltage output levels:

[0015] 1. Adjust the output voltage according to the six voltage adjustment terminals on each winding. That is, press the two voltage adjustment terminals in the corresponding range, and then connect the two voltage adjustment terminals connected to the transformer taps through the conductive parts. Compared with three-level adjustment, it can narrow the range of the applicable voltage and improve the accuracy of the voltage range.

[0016] 2. After pressing the insulating post, the insulating post causes the contact head to contact the voltage regulating connector. At this time, the state is locked by the rotating locking component. Then, the two contact heads are connected through the conductive parts, thereby selecting the corresponding two contact heads for electrical connection according to the environment, so that the corresponding two transformer taps are connected. The operation is more convenient because it can be performed directly on the top of the transformer body.

[0017] Third, the docking cover is closed by rotating the door, and then locked closed by the buckle to prevent accidental contact with the pressure regulating component, thus achieving a protective effect. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of a portable transformer with adjustable voltage output levels according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the cover door of this utility model when it is opened;

[0020] Figure 3 This is a cross-sectional view of the docking cover portion of this utility model;

[0021] Figure 4 This is a cross-sectional view of the outer cylinder portion of this utility model;

[0022] Figure 5 This is an exploded view of the rotating support rod and the top support of this utility model.

[0023] Figure 6 for Figure 2 Enlarged view of a portion at point A;

[0024] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-Transformer body, 2-Voltage regulating joint, 3-Insulating column, 4-Pair of contact heads, 5-Support top seat, 6-Rotating support rod, 7-Outer cylinder, 8-Locking slide groove, 9-Locking component, 10-Matching cover, 11-Door, 12-Snap fastener, 13-Operating button, 14-Elastic component, 15-Stabilizing clip. Detailed Implementation

[0025] 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.

[0026] The following are specific implementation cases and appendices. Figure 1-6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0027] A portable transformer with adjustable voltage output levels includes a transformer body 1, with voltage regulating connectors 2 sequentially arranged on the top of the transformer body 1, each connected to a transformer tap. The transformer taps are connection points led out from the transformer windings and are directly electrically connected to the corresponding winding sections. By changing the connection position of the transformer taps, the number of winding turns participating in electromagnetic induction can be changed, thereby changing the voltage ratio and achieving voltage regulation. For example, in an autotransformer, the taps are connected to different positions on the same winding; for transformers with multiple windings, the transformer taps can be connected to the primary or secondary windings. The voltage regulating connectors 2 are connected to each transformer tap via leads arranged inside the transformer body 1, and the contacts of the transformer taps are led to the top of the transformer body 1 through the voltage regulating connectors 2.

[0028] Typically, each transformer winding has six taps and three windings. Eighteen leads connect the contacts of these eighteen taps to the top of the transformer body 1, where they are electrically connected to three sets of eighteen voltage regulating connectors 2. Each voltage regulating connector 2 is fitted with a mating cover 10 fixed to the top of the transformer body 1. Three mating covers 10 are fixedly installed on the top of the transformer body 1, each covering the three sets of voltage regulating connectors 2 and providing protection.

[0029] An insulating post 3 is provided through the top of the mating cover 10, and a contact head 4 opposite to the voltage regulating connector 2 is fixedly connected to the bottom end of the insulating post 3. The insulating post 3 extends longitudinally through the top of the mating cover 10, allowing it to slide within the through hole of the mating cover 10. The contact head 4 is made of conductive metal and is fixedly embedded in the bottom of the support. The insulating post 3 is fixedly fixed to the top of the support. The insulating post 3 is made of insulating material, providing an isolation and protection effect.

[0030] The top of the docking cover 10 is equipped with a resettable push-lock assembly that independently drives each pair of contact heads 4 to dock with the voltage regulating connector 2. Through eighteen independent resettable push-lock assemblies, each pair of contact heads 4 is individually controlled to contact the voltage regulating connector 2. The output voltage is adjusted according to the six voltage regulating connectors 2 on each winding; that is, pressing two voltage regulating connectors 2 within the corresponding range connects the two voltage regulating connectors 2 connected to the transformer taps via conductive elements. Compared to three-level adjustment, this reduces the range of applicable voltages and improves the accuracy of the voltage range. Power must be disconnected during operation. After power is disconnected, the cover 11 is unlocked via the latch 12, and operation can then proceed.

[0031] The resettable push-lock assembly includes an outer cylinder 7 fixedly attached to the top of the docking cover 10, and the outer cylinder 7 is sleeved on the outside of the insulating post 3. The outer cylinder 7 is fixedly installed on the top of the docking cover 10 and covers the outside of each insulating post 3. A support top seat 5 slidably disposed on the inner wall of the outer cylinder 7 is sleeved on the outer wall of the insulating post 3. The shape of the support top seat 5 corresponds to that of the outer cylinder 7, and the support top seat 5 is fixedly sleeved on the outer wall of the insulating post 3, so that the support top seat 5 slides against the inner wall of the outer cylinder 7 as the insulating post 3 is attached to it.

[0032] An elastic element 14, sleeved on the outer wall of the insulating column 3, is provided between the top of the support top seat 5 and the top of the docking cover 10. The top of the support top seat 5 is provided with a rotary locking member for locking the contact head 4 in contact with the pressure regulating connector 2. The elastic element 14 can be a compression spring. The two ends of the elastic element 14 are respectively fixed to the top of the docking cover 10 and the bottom of the support top seat 5. The elastic element 14 slides and extends against the outer wall of the insulating column 3.

[0033] After pressing the insulating post 3, the insulating post 3 causes the contact head 4 to contact the voltage regulating connector 2. At this time, the state is locked by a rotating locking component. Then, the two contact heads 4 are connected by conductive parts, so that the corresponding two contact heads 4 are electrically connected according to the environment, so that the corresponding two transformer taps are connected. The operation is made more convenient by operating directly on the top of the transformer body 1.

[0034] It is worth noting that the rotary locking component includes a rotary support rod 6 rotatably mounted on the top of the support base 5. An operation button 13 is fixedly connected to the top of the rotary support rod 6. A locking groove 8 is formed on the outer wall of the outer cylinder 7. A locking element 9 that engages with the locking groove 8 is fixedly connected to the bottom of the operation button 13. A base is fixedly installed on the top of the support base 5. A groove is formed around the inner wall of the base. A connecting seat is fixedly installed at the bottom of the rotary support rod 6. A series of movable grooves are formed on the outer wall of the connecting seat. A ball bearing is movably embedded in the movable cavity formed by each movable groove and the groove, so that the operation button 13 drives the rotary support rod 6 to rotate on the top of the support base 5.

[0035] When the operating button 13 is pressed to align the contact head 4 with the pressure regulating connector 2, the elastic element 14 is compressed and generates elastic force. The locking element 9 then slides into the locking groove 8 along with the operating button 13. Rotating the operating button 13 causes the locking element 9 to rotate circumferentially and slide into the transverse groove of the locking groove 8, thus locking the contact head 4 and the pressure regulating connector 2 in their aligned state. When adjusting the voltage again, rotating the operating button 13 slides the locking element 9 out of the locking groove 8. The elastic force of the elastic element 14 then separates the contact head 4 from the pressure regulating connector 2.

[0036] Furthermore, the locking groove 8 is an L-shaped through groove, and the locking element 9 is an L-shaped rod that engages perpendicularly with the locking groove 8. The L-shaped through groove and the L-shaped locking element 9 ensure mutual engagement during circumferential rotation.

[0037] In addition, a stabilizing clip 15 is fixedly connected to the end of the locking member 9 away from the operation button 13. The stabilizing clip 15 slides against the outer wall of the outer cylinder 7 as the locking member 9 is attached, so that there is no gap between the end of the locking member 9 and the outer wall of the outer cylinder 7, thus ensuring the stability of the rotation locking process.

[0038] Furthermore, the top of the docking cover 10 is symmetrically connected with a door 11, and the door 11 is provided with a buckle 12. Two rotatable doors 11 are installed on both sides of the docking cover 10 by hinges. The docking cover 10 is closed by rotating the door 11.

[0039] The buckle 12 can be a bolt and a nut. The bolt and nut are fixed on the two cover doors 11 respectively. By turning the bolt, the connecting cover 10 is closed, which achieves the protective effect.

[0040] The transformer body 1 has an embedded lead channel that connects to the voltage regulating connector 2. The leads of the transformer tap and the voltage regulating connector 2 pass through the lead channel, thus isolating and protecting the leads.

[0041] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] 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 portable transformer with adjustable voltage output levels, comprising a transformer body (1), characterized in that: The top of the transformer body (1) is provided with a voltage regulating connector (2) connected to each transformer tap in sequence. The voltage regulating connector (2) is sleeved with a docking cover (10) fixed on the top of the transformer body (1). An insulating column (3) is provided through the top of the docking cover (10). The bottom end of the insulating column (3) is fixed with a contact head (4) opposite to the voltage regulating connector (2). The top of the docking cover (10) is provided with a resettable press-type locking component that independently drives each contact head (4) to dock with the voltage regulating connector (2).

2. A portable transformer with adjustable voltage output levels according to claim 1, characterized in that: The resettable press-type locking assembly includes an outer cylinder (7) fixed to the top of the docking cover (10), and the outer cylinder (7) is sleeved on the outside of the insulating column (3). The outer wall of the insulating column (3) is sleeved with a support top seat (5) that is slidably disposed on the inner wall of the outer cylinder (7). An elastic element (14) sleeved on the outer wall of the insulating column (3) is provided between the support top seat (5) and the top of the docking cover (10). The top of the support top seat (5) is provided with a rotation locking member for locking the state when the contact head (4) is in contact with the pressure regulating connector (2).

3. A portable transformer with adjustable voltage output levels according to claim 2, characterized in that: The rotating locking component includes a rotating support rod (6) rotatably mounted on the top of the support top seat (5), an operation button (13) is fixedly connected to the top of the rotating support rod (6), a locking groove (8) is provided on the outer wall of the outer cylinder (7), and a locking member (9) that engages with the locking groove (8) is fixedly connected to the bottom of the operation button (13).

4. A portable transformer with adjustable voltage output levels according to claim 3, characterized in that: The locking groove (8) is an L-shaped through groove, and the locking member (9) is an L-shaped rod that is perpendicularly engaged with the locking groove (8).

5. A portable transformer with adjustable voltage output levels according to claim 3, characterized in that: The locking member (9) has a stabilizing clip (15) fixed to one end away from the operation button (13).

6. A portable transformer with adjustable voltage output levels according to claim 1, characterized in that: The top of the docking cover (10) is symmetrically rotatably connected to a door (11), and the door (11) is provided with a buckle (12).

7. A portable transformer with adjustable voltage output levels according to claim 1, characterized in that: The inner cavity of the transformer body (1) is provided with a lead wire channel that is connected to the voltage regulating connector (2).

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