A wire fixing device for an isolation transformer

Abstract

The utility model belongs to the technical field of isolation transformer, especially relate to a fixed line device for isolation transformer, including transformer body and wire, the wiring terminal vertical fixed mounting of transformer body has the binding post, the wiring terminal fixedly connected with O type terminal of wire, the binding post penetrates O type terminal, through " wiring fixed + wire clamping solidification " dual structure realizes wire stable installation. The mounting of fixed plate is aligned with binding post and is placed in O type terminal bottom side, again the O type terminal of wire wiring terminal is covered into the binding post of transformer body wiring terminal, finally tightens the nut of binding post top, completes O type terminal and the preliminary positioning of fixed plate. Meanwhile, the drive mechanism in fixed plate interior can drive the two groups of fixed blocks that symmetrically are established on the upper surface to be close to wire synchronously from both sides, and the wire is clamped and fixed from both sides, avoids the displacement of wire because of external force and equipment vibration, ensures the connection stability of wire and binding post, reduces the risk of poor contact.

Description

Technical Field

[0001] This utility model belongs to the field of isolation transformer technology, and in particular relates to a wire fixing device for isolation transformers. Background Technology

[0002] It is used in medical equipment, industrial control, precision instruments and other scenarios where the stability and safety of power supply are extremely important. The reliability of the connection between the conductor and the transformer terminal directly determines the operational stability of the isolation transformer. Once the conductor connection is loose, it may not only cause problems such as poor contact and localized overheating, but also lead to equipment shutdown, circuit burnout and even safety accidents in severe cases.

[0003] The inventors discovered that at least the following problems remain unresolved in the existing technology: Traditional isolation transformers generally use a single fixing method of "terminal + nut + terminal," that is, after the end of the conductor is crimped with an O-type terminal, it is inserted into the terminal and then tightened with a nut. During use, the conductor is prone to displacement due to external pulling, equipment vibration, or thermal expansion and contraction caused by temperature changes. The structure that only fixes the end cannot restrain the main body of the conductor. Accumulated displacement will cause the nut to loosen, the contact pressure between the terminal and the terminal to decrease, resulting in poor contact, localized heating, and even insulation aging and short circuit risk.

[0004] Therefore, we propose a wire fixing device for isolation transformers that can solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing a wire fixing device for isolation transformers, which can simultaneously achieve wire fixing and wire clamping.

[0006] In view of this, the present invention provides a wire fixing device for an isolation transformer, including a transformer body and a conductor. A terminal block is vertically fixedly installed on the terminal of the transformer body. An O-type terminal is fixedly connected to the terminal of the conductor. The terminal block passes through the O-type terminal. A fixing plate is provided on the bottom side of the O-type terminal. An installation opening is provided on one end of the upper surface of the fixing plate. The terminal block passes through the installation opening. A nut is threaded to the top of the terminal block. Two sets of fixing blocks are symmetrically arranged on the upper surface of the fixing plate for fixing the conductor. The fixing plate is equipped with a driving mechanism inside, which is used to drive the two sets of fixing blocks to clamp the wire.

[0007] Furthermore, the driving mechanism includes a third wedge block for driving the fixed block to move, a second wedge block slidably connected to the inclined surface of the third wedge block, and a control block for pushing the second wedge block to move. An adjustment groove is provided inside the fixed plate, and an adjustment strip is slidably connected inside the adjustment groove. The end of the second wedge block away from the third wedge block is fixedly connected to the adjustment strip. The two sets of second wedge blocks are symmetrically arranged, and the ends of the two sets of fixed blocks placed inside the adjustment groove are respectively fixedly connected to the upper surfaces of the two sets of third wedge blocks.

[0008] Furthermore, a control port is provided through the top inner wall of the adjustment groove near the adjustment bar. The control block is movably connected to the control port. The top of the control block abuts against the bottom side of the O-type terminal. A first wedge block is fixedly installed at one end of the control block inside the adjustment groove. The inclined surface of the first wedge block is slidably connected to the upper end of the adjustment bar.

[0009] Furthermore, a guide groove is provided on the inner wall of the adjusting groove near the adjusting strip, and the bottom end of the first wedge block is slidably connected to the guide groove.

[0010] Furthermore, a slider is fixedly installed on the side of the third wedge block away from the adjusting strip, and a sliding groove is horizontally opened on the inner wall of the adjusting groove on the side away from the adjusting strip. The slider on the outer side of the third wedge block is slidably connected to the inner wall of the adjusting groove.

[0011] Furthermore, a spring is provided on the side of the third wedge block near the first wedge block, and a connecting groove is horizontally opened through the end of the third wedge block near the slider. A connecting rod is slidably connected to the inner side of the connecting groove, and the two ends of the connecting rod are fixedly connected to the inner wall of the adjusting groove. The spring is sleeved on the outer side of the connecting rod.

[0012] Furthermore, two sets of limiting grooves are horizontally provided on the inner wall of the top end of the adjusting groove near the third wedge block, and the lower ends of the two sets of fixing blocks are slidably connected to the two sets of limiting grooves respectively.

[0013] Furthermore, an arc-shaped fixing groove is provided on the side of the fixing block near the wire, and a rubber pad is adhered to the inner wall of the fixing groove.

[0014] The beneficial effects of this utility model are: 1. Stable wire installation is achieved through a dual structure of "wire fixing + wire clamping". The mounting opening of the fixing plate is inserted into the terminal block of the transformer body, and then the O-type terminal of the wire is inserted into the terminal block of the transformer body. Finally, the nut at the top of the terminal block is tightened, completing the initial positioning of the O-type terminal and the fixing plate. Simultaneously, the drive mechanism inside the fixing plate drives two sets of symmetrically arranged fixing blocks on the upper surface to synchronously approach the wire, clamping the wire from both sides. This prevents displacement of the wire due to external pulling or equipment vibration, ensuring the stability of the connection between the wire and the terminal block and reducing the risk of poor contact. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the drive mechanism of this utility model; Figure 2 This is the front view of this utility model; Figure 3 This is a top view of the adjustment groove of this utility model; Figure 4 This is a top view of the fixing plate of this utility model; The markings in the diagram are as follows: 1. Transformer body; 11. Terminal block; 12. Wire; 13. O-type terminal; 14. Nut; 15. Fixing plate; 16. Mounting port; 17. Fixing block; 2. Adjusting groove; 21. Adjusting strip; 22. Second wedge block; 23. Control port; 24. Control block; 25. First wedge block; 26. Guide groove; 27. Limiting groove; 3. Third wedge block; 31. Sliding block; 32. Slide groove; 33. Spring; 34. Connecting rod; 35. Connecting groove; 36. Fixing groove; 37. Rubber pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figures 1 to 4 A wire fixing device for an isolation transformer includes a transformer body 1 and a conductor 12. A terminal block 11 is vertically fixedly installed at the terminal of the transformer body 1. An O-type terminal 13 is fixedly connected to the terminal of the conductor 12. The terminal block 11 passes through the O-type terminal 13. A fixing plate 15 is provided on the bottom side of the O-type terminal 13. An installation opening 16 is provided at one end of the upper surface of the fixing plate 15. The terminal block 11 passes through the installation opening 16. A nut 14 is threaded to the top of the terminal block 11. Two sets of fixing blocks 17 are symmetrically arranged on the upper surface of the fixing plate 15 for fixing the conductor 12. A driving mechanism is provided inside the fixing plate 15 for driving the two sets of fixing blocks 17 to clamp the conductor 12.

[0018] Stable installation of wire 12 is achieved through a dual structure of "wiring fixation + wire 12 clamping". First, the mounting port 16 of the fixing plate 15 is inserted into the terminal block 11 of the transformer body 1. Then, the O-type terminal 13 of the wire 12 is inserted into the terminal block 11 of the transformer body 1. Finally, the nut 14 at the top of the terminal block 11 is tightened, completing the initial positioning of the O-type terminal 13 and the fixing plate 15. At the same time, the drive mechanism inside the fixing plate 15 can drive the two sets of fixing blocks 17 symmetrically arranged on the upper surface to move towards the wire 12 synchronously, clamping the wire 12 from both sides to prevent the wire 12 from shifting due to external pulling or equipment vibration, ensuring the connection stability between the wire 12 and the terminal block 11, and reducing the risk of poor contact.

[0019] Furthermore, the driving mechanism includes a third wedge block 3 for driving the fixed block 17 to move, a second wedge block 22 slidably connected to the inclined surface of the third wedge block 3, and a control block 24 for pushing the second wedge block 22 to move. The fixed plate 15 has an adjustment groove 2 inside, and an adjustment strip 21 is slidably connected inside the adjustment groove 2. The end of the second wedge block 22 away from the third wedge block 3 is fixedly connected to the adjustment strip 21. The two sets of second wedge blocks 22 are symmetrically arranged. The ends of the two sets of fixed blocks 17 placed inside the adjustment groove 2 are respectively fixedly connected to the upper surfaces of the two sets of third wedge blocks 3.

[0020] The drive mechanism controls the movement of the fixed block 17 through a combination of wedge block transmission and adjusting bar 21 linkage. The adjusting groove 2 inside the fixed plate 15 provides movement space for each component, allowing the adjusting bar 21 to slide horizontally within it. When the adjusting bar 21 is moved under force, it drives the two sets of second wedge blocks 22 to move synchronously. Since the second wedge block 22 slides against the inclined surface of the third wedge block 3, the movement of the second wedge block 22 is converted into a horizontal displacement of the third wedge block 3 (moving closer to or away from the wire 12) through the inclined surface transmission. One end of each of the two sets of fixed blocks 17 located inside the adjusting groove 2 is fixed to the upper surface of the two sets of third wedge blocks 3. Therefore, the movement of the two sets of third wedge blocks 3 controls the clamping or loosening of the wire 12 by the two sets of fixed blocks 17.

[0021] Furthermore, a control port 23 is provided through the inner wall of the top end of the adjustment groove 2 near the adjustment bar 21. The control block 24 is movably connected to the control port 23. The top end of the control block 24 abuts against the bottom side of the O-type terminal 13. A first wedge block 25 is fixedly installed at one end of the control block 24 placed inside the adjustment groove 2. The inclined surface of the first wedge block 25 is slidably connected to the upper end of the adjustment bar 21.

[0022] The automatic linkage of the drive mechanism is achieved through "O-type terminal pressure triggering". The control port 23 opened on the inner wall of the top of the adjustment groove 2 near the adjustment bar 21 provides a channel for the control block 24 to move up and down. When the nut 14 at the top of the terminal 11 is tightened, the nut 14 will exert downward pressure on the O-type terminal 13. After being pressed, the O-type terminal 13 pushes the control block 24 to move downward along the control port 23, thereby driving the first wedge block 25 to move downward synchronously. Since the inclined surface of the first wedge block 25 is slidably connected to the upper end of the adjustment bar 21, and the adjustment bar 21 can slide horizontally in the adjustment groove 2, when the first wedge block 25 moves downward, it will squeeze the adjustment bar 21 through the inclined surface, causing the adjustment bar 21 to move in the horizontal direction, thereby triggering the subsequent transmission of the second wedge block 22 and the third wedge block 3, and finally realizing the clamping of the wire 12 by the fixing block 17, achieving the synchronous linkage of "wiring fastening and wire 12 clamping".

[0023] Furthermore, the inner wall of the adjusting groove 2 near the adjusting bar 21 is provided with a guide groove 26, and the bottom end of the first wedge block 25 is slidably connected to the guide groove 26.

[0024] When the control block 24 moves the first wedge block 25 down or resets, the guide groove 26 can restrict the movement direction of the first wedge block 25, preventing it from shifting or tilting due to uneven force, ensuring that the inclined surface of the first wedge block 25 always maintains a stable sliding contact with the upper end of the adjusting bar 21, preventing jamming or detachment of the inclined surface during transmission, ensuring effective force transmission, and improving the reliability and stability of the drive mechanism.

[0025] Furthermore, a slider 31 is fixedly installed on the side of the third wedge block 3 away from the adjusting strip 21, and a sliding groove 32 is horizontally opened on the inner wall of the adjusting groove 2 on the side away from the adjusting strip 21. The slider 31 on the outer side of the third wedge block 3 is slidably connected to the inner wall of the adjusting groove 2.

[0026] When the second wedge block 22 pushes the third wedge block 3 to move through the inclined surface, the slide groove 32 restricts the movement trajectory of the third wedge block 3 through the slider 31, allowing it to move smoothly in the horizontal direction only, avoiding vertical offset or rotation of the third wedge block 3 due to force, ensuring that the third wedge block 3 and the inclined surface of the second wedge block 22 are always in close contact, and ensuring the straightness of the movement of the fixed block 17 when the third wedge block 3 drives it, so that the two sets of fixed blocks 17 can be accurately aligned with the wire 12, improving the clamping effect.

[0027] Furthermore, a spring 33 is provided on the side of the third wedge block 3 near the first wedge block 25, and a connecting groove 35 is horizontally opened through the end of the third wedge block 3 near the slider 31. A connecting rod 34 is slidably connected to the inner side of the connecting groove 35. The two ends of the connecting rod 34 are fixedly connected to the inner wall of the adjusting groove 2, and the spring 33 is sleeved on the outer side of the connecting rod 34.

[0028] When the drive mechanism moves the third wedge block 3 toward the wire 12 (clamping the wire 12), the third wedge block 3 will compress the spring 33 to cause it to elastically deform. When it is necessary to release the wire 12 (such as for disassembly and maintenance), the elastic restoring force of the spring 33 will push the third wedge block 3 to move away from the wire 12 along the connecting rod 34, causing the fixing block 17 to automatically reset, which facilitates the disassembly and replacement of the wire 12.

[0029] Furthermore, the inner wall of the top of the adjusting groove 2 near the third wedge block 3 is horizontally provided with two sets of limiting grooves 27, and the lower ends of the two sets of fixing blocks 17 are slidably connected to the two sets of limiting grooves 27 respectively.

[0030] When the third wedge block 3 moves the fixing block 17, the limiting groove 27 restricts the movement direction of the fixing block 17 by cooperating with the lower end of the fixing block 17, allowing it to move in a straight line in the horizontal direction (closer to or away from the wire 12), preventing the fixing block 17 from tilting or shifting in the vertical direction due to force, ensuring that the two sets of fixing blocks 17 always maintain a symmetrical and parallel movement state, and can evenly clamp the wire 12 from both sides, avoiding problems such as uneven force on the wire 12, local wear or loose clamping caused by the offset of the fixing block 17.

[0031] Furthermore, the fixing block 17 has an arc-shaped fixing groove 36 on the side near the wire 12, and a rubber pad 37 is adhered to the inner wall of the fixing groove 36.

[0032] The arc-shaped fixing groove 36 opened on the side of the fixing block 17 near the wire 12 has an arc that matches the outer diameter of the common wire 12. This increases the contact area between the fixing block 17 and the wire 12, making the clamping force of the fixing block 17 on the wire 12 more uniform and avoiding excessive local pressure that could damage the insulation layer of the wire 12.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixing device for an isolation transformer, characterized in that: The transformer body (1) includes a transformer body (1) and a conductor (12). A terminal block (11) is vertically fixedly installed on the terminal of the transformer body (1). An O-type terminal (13) is fixedly connected to the terminal of the conductor (12). The terminal block (11) passes through the O-type terminal (13). A fixing plate (15) is provided on the bottom side of the O-type terminal (13). An installation port (16) is provided on one end of the upper surface of the fixing plate (15). The terminal block (11) passes through the installation port (16). A nut (14) is threaded to the top of the terminal block (11). Two sets of fixing blocks (17) are symmetrically arranged on the upper surface of the fixing plate (15) for fixing the conductor (12). The fixing plate (15) is equipped with a driving mechanism inside, which is used to drive two sets of fixing blocks (17) to clamp the wire (12).

2. The wire fixing device for an isolation transformer according to claim 1, characterized in that: The driving mechanism includes a third wedge block (3) for driving the fixed block (17) to move, a second wedge block (22) slidably connected to the inclined surface of the third wedge block (3), and a control block (24) for pushing the second wedge block (22) to move. An adjustment groove (2) is provided inside the fixed plate (15). An adjustment strip (21) is slidably connected inside the adjustment groove (2). The end of the second wedge block (22) away from the third wedge block (3) is fixedly connected to the adjustment strip (21). The two sets of second wedge blocks (22) are symmetrically arranged. The ends of the two sets of fixed blocks (17) placed inside the adjustment groove (2) are respectively fixedly connected to the upper surfaces of the two sets of third wedge blocks (3).

3. The wire fixing device for an isolation transformer according to claim 2, characterized in that: The inner wall of the top of the adjustment groove (2) near the adjustment bar (21) is provided with a control port (23). The control block (24) is movably connected to the control port (23). The top of the control block (24) abuts against the bottom side of the O-type terminal (13). A first wedge block (25) is fixedly installed at one end of the control block (24) inside the adjustment groove (2). The inclined surface of the first wedge block (25) is slidably connected to the upper end of the adjustment bar (21).

4. A wire fixing device for an isolation transformer according to claim 3, characterized in that: The inner wall of the adjustment groove (2) near the adjustment bar (21) is provided with a guide groove (26), and the bottom end of the first wedge block (25) is slidably connected to the guide groove (26).

5. A wire fixing device for an isolation transformer according to claim 4, characterized in that: A slider (31) is fixedly installed on the side of the third wedge block (3) away from the adjustment bar (21). A sliding groove (32) is horizontally opened on the inner wall of the adjustment groove (2) away from the adjustment bar (21). The slider (31) on the outer side of the third wedge block (3) is slidably connected to the inner wall of the adjustment groove (2).

6. A wire fixing device for an isolation transformer according to claim 5, characterized in that: A spring (33) is provided on the side of the third wedge block (3) near the first wedge block (25). A connecting groove (35) is horizontally opened at one end of the third wedge block (3) near the slider (31). A connecting rod (34) is slidably connected to the inner side of the connecting groove (35). The two ends of the connecting rod (34) are fixedly connected to the inner wall of the adjusting groove (2). The spring (33) is sleeved on the outer side of the connecting rod (34).

7. A wire fixing device for an isolation transformer according to claim 2, characterized in that: The adjusting groove (2) has two sets of limiting grooves (27) horizontally extending through the inner wall of the top end near the third wedge block (3). The lower ends of the two sets of fixing blocks (17) are slidably connected to the two sets of limiting grooves (27).

8. A wire fixing device for an isolation transformer according to claim 1, characterized in that: The fixing block (17) has an arc-shaped fixing groove (36) on the side near the wire (12), and a rubber pad (37) is bonded to the inner wall of the fixing groove (36).

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