Installation structure of current transformer

Abstract

The utility model relates to an installation structure of a current transformer. According to the technical scheme, a rectangular notch is formed in the middle of the vertical side wall of a mounting plate, T-shaped inserting grooves are formed in the front surfaces of the left and right plate walls of the rectangular notch, notches are formed in the plate walls in the left and right T-shaped inserting grooves, and shaft sleeves are fixedly arranged on the rear side plate walls at the opposite ends of the left and right notches correspondingly; the clamping assembly comprises clamping blocks which are oppositely arranged left and right, the opposite ends of the left and right clamping blocks are provided with binding post clamping grooves, the middles of the rear side walls of the left and right clamping blocks are fixedly connected with L-shaped bolts, the left and right L-shaped bolts movably penetrate through the corresponding notches respectively, and the bent ends of the left and right L-shaped bolts are sleeved with springs respectively. The pin shafts at the opposite ends of the left and right springs are movably sleeved with wire pressing rings respectively, wire penetrating grooves are formed in the pin shafts at the opposite ends of the left and right wire pressing rings in an up-down penetrating mode, and the opposite ends of the left and right L-shaped bolts are inserted into the left and right shaft sleeves respectively. The beneficial effects of the utility model are that a mutual inductor can be conveniently inserted, and wiring is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of current transformer installation technology, and relates to an installation structure for a current transformer. Background Technology

[0002] A current transformer is an instrument that measures current by converting a large primary current into a small secondary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series with the circuit whose current needs to be measured. Currently, current transformers are typically installed in an electrical control box by drilling mounting holes on mounting plates on the left and right sides of their bottom. This installation method is cumbersome to disassemble. Furthermore, when wiring, external wires need to be wrapped around corresponding screws and tightened to compress and secure the wires. This wiring method requires external tools for installation and wiring, making it inconvenient to operate manually in confined spaces.

[0003] Therefore, this utility model provides an installation structure for a current transformer to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses an installation structure for a current transformer. The technical solution adopted is as follows: A current transformer is included, with mounting plates fixedly installed on the left and right sides of the bottom of the current transformer. Wiring screws are respectively installed on the left and right sides of the front of the lower part of the current transformer. The current transformer is respectively snapped onto the horizontal sidewall of an L-shaped mounting plate by the left and right mounting plates. L-shaped slots are symmetrically opened on the left and right sides of the upper surface of the horizontal sidewall of the L-shaped mounting plate. A rectangular notch is opened in the middle of the vertical sidewall of the mounting plate. T-shaped slots are opened on the front surface of the left and right sides of the rectangular notch, and grooves are opened in the sidewalls within the T-shaped slots. The left and right slots have bushings fixedly installed on the rear side walls of opposite ends of the slots. The left and right T-shaped slots have symmetrically movable inserting snap-fit ​​components. The snap-fit ​​components include left and right opposite snap-fit ​​blocks. The opposite ends of the left and right snap-fit ​​blocks have terminal slots. The middle of the rear side wall of the left and right snap-fit ​​blocks is fixedly connected to an L-shaped pin. The left and right L-shaped pins move through the corresponding slots. The bent ends of the left and right L-shaped pins are fitted with springs. The pins at the opposite ends of the left and right springs are fitted with wire pressure rings. The pins at the opposite ends of the left and right wire pressure rings have wire-passing grooves running vertically through them. The opposite ends of the left and right L-shaped pins are inserted into the left and right bushings respectively.

[0005] As a preferred embodiment of this utility model, the height of the L-shaped slot is 0.5-1mm greater than the thickness of the mounting piece; this design facilitates the insertion of the mounting piece into the corresponding L-shaped slot.

[0006] In a preferred embodiment of this utility model, the L-shaped mounting plate is made of insulating material.

[0007] In a preferred embodiment of this utility model, both the card block and the L-shaped pin are made of copper as the conductive material.

[0008] As a preferred embodiment of this utility model, mounting holes are respectively opened at the left and right ends of the horizontal sidewall of the L-shaped mounting plate; the L-shaped mounting plate is fixedly installed in the electrical control box by screws engaging the mounting holes.

[0009] As a preferred embodiment of this utility model, the opposing sides of the left and right pressure rings are respectively provided with a plurality of barbs arranged in a circumferential array; by using barbs, under the compression of the spring, the barbs can be inserted into the branches of the wire, thereby increasing the friction and preventing the wire from coming loose when inserted into the wire groove.

[0010] The beneficial effects of this utility model are as follows: By designing L-shaped slots on both sides of the L-shaped mounting plate, and cooperating with the left and right locking blocks of the locking assembly, the mounting plates and wiring screws on both sides of the current transformer can be quickly locked, improving the convenience of disassembling and assembling the current transformer; at the same time, wire grooves are opened on the L-shaped pins on the left and right sides, and with the help of springs and wire clamping rings, the external wiring can be quickly plugged in and fixed, improving the convenience of wiring. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the L-shaped mounting plate of this utility model;

[0013] Figure 3 This is a schematic diagram of the rear side of the snap-fit ​​assembly of this utility model.

[0014] In the diagram: 1-Current transformer, 2-L-shaped mounting plate, 3-Snap-fit ​​assembly, 11-Mounting piece, 12-Wire screw, 21-L-shaped slot, 22-Rectangular notch, 23-T-shaped slot, 24-Slot, 25-Sleeve, 26-Mounting hole, 31-Clip block, 311-Terminal slot, 32-L-shaped pin, 321-Wire groove, 33-Spring, 34-Wire clamping ring, 341-Barb. Detailed Implementation

[0015] Example 1

[0016] like Figures 1 to 3As shown, the installation structure of a current transformer according to this utility model adopts the following technical solution: It includes a current transformer 1, with mounting plates 11 fixedly installed on the left and right sides of the bottom of the current transformer 1, and wiring screws 12 respectively installed on the left and right sides of the lower front of the current transformer 1. The current transformer 1 is characterized in that it is respectively mounted on the horizontal sidewall of an L-shaped mounting plate 2 by the left and right mounting plates 11. The L-shaped mounting plate 2 uses PP as the insulating material. L-shaped slots 21 are symmetrically opened on the left and right sides of the upper surface of the horizontal sidewall of the L-shaped mounting plate 2. The height of the L-shaped slot 21 is 0.5-1mm greater than the thickness of the mounting plate 11. A rectangular notch 22 is opened in the middle of the vertical sidewall of the mounting plate 2. T-shaped slots 23 are opened on the front surface of the left and right sides of the rectangular notch 22. Grooves 24 are opened in the plate walls inside the left and right T-shaped slots 23. The rear sidewalls of the opposite ends of the left and right grooves 24 are respectively fixedly installed... The bushing 25 has mounting holes 26 at both ends of the horizontal sidewall of the L-shaped mounting plate 2. The left and right T-shaped slots 23 are symmetrically and movablely inserted with snap-fit ​​components 3. The snap-fit ​​components 3 include left and right opposite snap blocks 31. The opposite ends of the left and right snap blocks 31 have terminal slots 311. The middle of the rear sidewall of the left and right snap blocks 31 is fixedly connected with L-shaped pins 32. Both snap blocks 31 and L-shaped pins 32 are made of copper as conductive material. The left and right L-shaped pins 32 move through the corresponding slots 24. The bent ends of the left and right L-shaped pins 32 are respectively fitted with springs 33. The pins at the opposite ends of the left and right springs 33 are respectively movably fitted with wire pressure rings 34. The pins at the opposite ends of the left and right wire pressure rings 34 have wire grooves 321 running through them. The opposite ends of the left and right L-shaped pins 32 are respectively inserted into the left and right bushings 25. The opposite sides of the left and right wire pressure rings 34 are respectively circumferentially arrayed with several barbs 341.

[0017] The working principle of this utility model is as follows: In use, the device is installed in the electrical control box or corresponding installation position using screws and mounting holes 26 at both ends of the L-shaped mounting plate 2. The mounting plates on the left and right sides of the current transformer 1 are inserted into the corresponding L-shaped slots 21 of the L-shaped mounting plate 2 from the rear. During the forward insertion process, the L-shaped pins 32 or the left and right locking blocks 31 on both sides are moved to opposite sides by hand, so that the corresponding terminal slots 311 between the left and right locking blocks 31 are respectively locked onto the left and right wiring screws 12, thereby completing the quick installation of the current transformer 1. When wiring, the wire clamping ring 34 can be pushed outward to expose the wire groove 321 as much as possible, and the external wire is inserted into it. Then, the wire clamping ring 34 is released. Under the action of the spring 33, the barbs on the wire clamping ring 34 are squeezed into the branch wire of the external wiring, thereby increasing the friction between the wire clamping ring 34 and the external wiring, and thus completing the quick wiring.

[0018] Electrical connection methods or structures not described in detail in this article are existing technologies.

[0019] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A mounting structure for a current transformer, comprising a current transformer (1), wherein mounting plates (11) are fixedly disposed on the left and right sides of the bottom of the current transformer (1), and wiring screws (12) are disposed on the left and right sides of the front part of the lower part of the current transformer (1), characterized in that: The current transformer (1) is respectively mounted on the horizontal sidewall of the L-shaped mounting plate (2) by the left and right mounting pieces (11). The upper surface of the horizontal sidewall of the L-shaped mounting plate (2) has symmetrically opened L-shaped slots (21) on both the left and right sides. A rectangular notch (22) is opened in the middle of the vertical sidewall of the mounting plate (2). T-shaped slots (23) are opened on the front surface of the left and right sides of the rectangular notch (22). Grooves (24) are opened in the wall of the left and right T-shaped slots (23). Bushings (25) are fixedly installed on the rear sidewall of the opposite end of the left and right grooves (24). symmetrically movable snap-fit ​​components (3) are inserted into the left and right T-shaped slots (23). The device includes left and right opposing locking blocks (31), with a terminal slot (311) opened at the opposite end of the left and right locking blocks (31). An L-shaped pin (32) is fixedly connected to the middle of the rear side wall of the left and right locking blocks (31). The left and right L-shaped pins (32) move through the corresponding slots (24) respectively. A spring (33) is fitted on the bent end of the left and right L-shaped pins (32). A wire pressing ring (34) is movably fitted on the pin at the opposite end of the left and right springs (33). A wire passing groove (321) is opened through the pin at the opposite end of the left and right wire pressing rings (34). The opposite ends of the left and right L-shaped pins (32) are respectively inserted into the left and right bushings (25).

2. The mounting structure of a current transformer according to claim 1, characterized in that: The height of the L-shaped slot (21) is 0.5-1mm greater than the thickness of the mounting plate (11).

3. The mounting structure of a current transformer according to claim 1, characterized in that: The L-shaped mounting plate (2) is made of insulating material.

4. The mounting structure of a current transformer according to claim 1, characterized in that: Both the card block (31) and the L-shaped pin (32) are made of copper as the conductive material.

5. The mounting structure of a current transformer according to claim 1, characterized in that: Mounting holes (26) are respectively opened at the left and right ends of the horizontal sidewall of the L-shaped mounting plate (2).

6. The mounting structure of a current transformer according to claim 1, characterized in that: The left and right pressure rings (34) have several barbs (341) arranged in a circular array on their opposite sides.

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