CN212907357U - Low-current high-precision direct low-voltage current transformer - Google Patents

Abstract

The utility model discloses a undercurrent high accuracy direct low voltage current transformer, including the mount pad, the low voltage current transformer is installed through the bolt to the mount pad, and binding post A and binding post B are installed to low voltage current transformer's upper end, are provided with the protection casing on the low voltage current transformer, and the protection casing passes through coupling mechanism to be fixed on the locating plate, and the threading groove has all been seted up to the preceding terminal surface and the rear end face of protection casing, and the threading inslot is provided with hold-down mechanism, and hold-down mechanism includes arc seat, expanding spring, flexible guide post and compact heap. The utility model discloses a undercurrent high accuracy direct low-voltage current transformer, protection casing pass through coupling mechanism to be fixed on low-voltage current transformer, and the compact heap compresses tightly the cable under the reset action of expanding spring and flexible guide post, can compress tightly the cable through hold-down mechanism, effectively avoids the cable to drop from binding post A and binding post B, provides the powerful guarantee for low-voltage current transformer work.

Description

Low-current high-precision direct low-voltage current transformer

Technical Field

The utility model relates to a current transformer technical field specifically is a undercurrent high accuracy direct low-voltage current transformer.

Background

The low-voltage current transformer is a device capable of converting high alternating current into low current which is easy to control, and has the characteristics of excellent performance and stable precision.

When the low-current high-precision direct low-voltage current transformer is used, a cable is mostly connected to a wiring terminal arranged on the low-voltage current transformer, and the connected cable is not effectively compressed and fixed, so that the connected cable is easy to fall off from the wiring terminal, and the low-current high-precision direct low-voltage current transformer cannot be normally used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a undercurrent high accuracy direct type low-voltage current transformer, protection casing pass through coupling mechanism to be fixed on low-voltage current transformer, and the compact heap compresses tightly the cable under the reset action of expanding spring and flexible guide post, can compress tightly the cable through hold-down mechanism, effectively avoids the cable to drop from binding post A and binding post B, provides the powerful guarantee for low-voltage current transformer work, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a low-current high-precision direct low-voltage current transformer comprises a mounting seat, wherein the mounting seat is provided with the low-voltage current transformer through a bolt, the upper end of the low-voltage current transformer is provided with a wiring terminal A and a wiring terminal B which are respectively positioned at the two sides of the positioning plate, the upper end of the low-voltage current transformer is also provided with a protective cover which is fixed on the positioning plate through a connecting mechanism and shields the wiring terminal A and the wiring terminal B, the front end surface and the rear end surface of the protective cover are both provided with threading grooves, the threading grooves are internally provided with pressing mechanisms, the pressing mechanism comprises an arc-shaped seat, a telescopic spring, a telescopic guide post and a pressing block, the arc-shaped seat is arranged at the threading groove, the arc seat is connected with a pressing block through a telescopic spring and a telescopic guide column, and the pressing block presses the cable.

Preferably, coupling mechanism includes L shape mounting bracket, double-screw bolt and handle, L shape mounting bracket is installed on the outer wall of protection casing, threaded connection has the double-screw bolt on the L shape mounting bracket, the handle is installed to the one end of double-screw bolt, the handle is located the outside of L shape mounting bracket.

Preferably, the pressing block is arc-shaped, and a pressing pad which is consistent with the radian of the pressing block is arranged on the inner side face of the pressing block.

Preferably, the pressing pad is a member made of polyurethane.

Preferably, the positioning plate is provided with a positioning groove for inserting the stud.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a undercurrent high accuracy direct low voltage current transformer, it is rotatory to drive the double-screw bolt through the handle, because double-screw bolt threaded connection is on L shape mounting bracket and L shape mounting bracket is installed on the protective housing, therefore, the double-screw bolt is rotatable in rotatory in-process and leaves the constant head tank, take off the protection casing, connect the back on binding post A and binding post B with the cable, install the protection casing on low voltage current transformer, drive the double-screw bolt through the handle and screw in the constant head tank, the protection casing passes through coupling mechanism to be fixed on low voltage current transformer, the compact heap compresses tightly the cable under the reset action of expanding spring and flexible guide post this moment, can compress tightly the cable through hold-down mechanism, effectively avoid the cable to drop from binding post A and binding post B, provide the powerful.

Drawings

Fig. 1 is a schematic diagram of a low-current high-precision direct low-voltage current transformer of the present invention;

fig. 2 is an exploded view of the low current high precision direct low voltage current transformer of the present invention;

FIG. 3 is a schematic view of the protective cover of the present invention with a connecting mechanism and a pressing mechanism;

fig. 4 is a schematic view of the connection mechanism of the present invention;

fig. 5 is a schematic view of the pressing mechanism of the present invention.

In the figure: 1. a mounting seat; 2. a low-voltage current transformer; 21. a wiring terminal A; 22. a wiring terminal B; 3. positioning a plate; 31. positioning a groove; 4. a protective cover; 41. a threading slot; 5. a connecting mechanism; 51. an L-shaped mounting bracket; 52. a stud; 53. a handle; 6. a hold-down mechanism; 61. an arc-shaped seat; 62. a tension spring; 63. a telescopic guide post; 64. a compression block; 641. and pressing the pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a low-current high-precision direct low-voltage current transformer includes a mounting base 1, a low-voltage current transformer 2 is mounted on the mounting base 1 through bolts, a connection terminal a21 and a connection terminal B22 are mounted at the upper end of the low-voltage current transformer 2, the connection terminal a21 and the connection terminal B22 are respectively located at two sides of a positioning plate 3, a positioning groove 31 for inserting a stud 52 is formed on the positioning plate 3, a protective cover 4 is further disposed at the upper end of the low-voltage current transformer 2, the protective cover 4 is fixed on the positioning plate 3 through a connection mechanism 5 and shields the connection terminal a21 and the connection terminal B22, the connection mechanism 5 includes an L-shaped mounting frame 51, the stud 52 and a handle 53, the L-shaped mounting frame 51 is mounted on the outer wall of the protective cover 4, the stud 52 is connected to the L-shaped mounting frame, the stud 52 is driven to rotate by the handle 53, the stud 52 is in threaded connection with the L-shaped mounting frame 51, the L-shaped mounting frame 51 is mounted on the protective cover 4, therefore, the stud 52 can rotate away from the positioning groove 31 in the rotating process, the protective cover 4 is taken down, after cables are connected to the wiring terminal A21 and the wiring terminal B22, the protective cover 4 is mounted on the low-voltage current transformer 2, the stud 52 is driven to be screwed into the positioning groove 31 by the handle 53, the protective cover 4 is fixed on the low-voltage current transformer 2 by the connecting mechanism 5, the front end face and the rear end face of the protective cover 4 are both provided with the threading grooves 41, the pressing mechanism 6 is arranged in the threading grooves 41, the pressing mechanism 6 comprises an arc seat 61, an expansion spring 62, an expansion guide post 63 and a pressing block 64, the arc seat 61 is mounted at the threading grooves 41, and the arc seat, the compact heap 64 compresses tightly the cable, the compact heap 64 compresses tightly the cable under expanding spring 62 and flexible guide post 63's reset action, can compress tightly the cable through hold-down mechanism 6, effectively avoid the cable to drop from binding post A21 and binding post B22, provide the force guarantee for low voltage current transformer 2 works, the compact heap 64 is the arc form, the medial surface of compact heap 64 is provided with the pad 641 that compresses tightly unanimous with the compact heap 64 radian, compress tightly the component that the pad 641 is made for a polyurethane material, can increase the friction between compact heap 64 and the cable, it is effectual to make to compress tightly the pad 641 and compress tightly the cable, avoid the cable to drop.

The working principle is as follows: the handle 53 drives the stud 52 to rotate, the stud 52 is in threaded connection with the L-shaped mounting frame 51, the L-shaped mounting frame 51 is mounted on the protective cover 4, the stud 52 can rotate to leave the positioning groove 31 in the rotating process, the protective cover 4 is taken down, the cable is connected to the wiring terminal A21 and the wiring terminal B22, the protective cover 4 is mounted on the low-voltage current transformer 2, the stud 52 is driven to be screwed into the positioning groove 31 through the handle 53, the protective cover 4 is fixed to the low-voltage current transformer 2 through the connecting mechanism 5, the cable is pressed by the pressing block 64 under the resetting action of the telescopic spring 62 and the telescopic guide column 63 at the moment, the cable can be pressed by the pressing mechanism 6, the cable is effectively prevented from falling off from the wiring terminal A21 and the wiring terminal B22, and powerful guarantee is provided for.

To sum up, the low current high precision direct low voltage current transformer of the utility model drives the stud 52 to rotate through the handle 53, since the stud 52 is screwed to the L-shaped mount 51 and the L-shaped mount 51 is mounted to the shield 4, therefore, the stud 52 is rotated out of the positioning groove 31 during the rotation, the shield 4 is removed, after the cables are connected to the connection terminal a21 and the connection terminal B22, the shield 4 is mounted on the low voltage current transformer 2, the stud 52 is driven by the handle 53 to be screwed into the positioning groove 31, the protective cover 4 is fixed on the low-voltage current transformer 2 through the connecting mechanism 5, at the moment, the pressing block 64 presses the cable under the reset action of the telescopic spring 62 and the telescopic guide post 63, can compress tightly the cable through hold-down mechanism 6, effectively avoid the cable to drop from binding post A21 and binding post B22, provide the powerful guarantee for low-voltage current transformer 2 work.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims (5)

1. The utility model provides a low-current high accuracy direct type low-voltage current transformer, includes mount pad (1), its characterized in that: the low-voltage current transformer is characterized in that a low-voltage current transformer (2) is installed on the installation base (1) through bolts, a wiring terminal A (21) and a wiring terminal B (22) are installed at the upper end of the low-voltage current transformer (2), the wiring terminal A (21) and the wiring terminal B (22) are respectively located on two sides of the positioning plate (3), a protective cover (4) is further arranged at the upper end of the low-voltage current transformer (2), the protective cover (4) is fixed on the positioning plate (3) through a connecting mechanism (5) and shields the wiring terminal A (21) and the wiring terminal B (22), threading grooves (41) are formed in the front end face and the rear end face of the protective cover (4), a pressing mechanism (6) is arranged in each threading groove (41), and each pressing mechanism (6) comprises an arc-shaped base (61), a telescopic spring (62, the cable fixing device is characterized in that the arc-shaped seat (61) is installed at the position of the threading groove (41), the arc-shaped seat (61) is connected with a pressing block (64) through a telescopic spring (62) and a telescopic guide column (63), and the pressing block (64) presses a cable.

2. A low current high accuracy direct low voltage current transformer according to claim 1, wherein: coupling mechanism (5) include L shape mounting bracket (51), double-screw bolt (52) and handle (53), install on the outer wall of protection casing (4) L shape mounting bracket (51), threaded connection has double-screw bolt (52) on L shape mounting bracket (51), handle (53) are installed to the one end of double-screw bolt (52), handle (53) are located the outside of L shape mounting bracket (51).

3. A low current high accuracy direct low voltage current transformer according to claim 1, wherein: the pressing block (64) is arc-shaped, and a pressing pad (641) which is consistent with the radian of the pressing block (64) is arranged on the inner side surface of the pressing block (64).

4. A low current high accuracy direct low voltage current transformer according to claim 3 wherein: the pressing pad (641) is a member made of polyurethane.

5. A low current high accuracy direct low voltage current transformer according to claim 1, wherein: and the positioning plate (3) is provided with a positioning groove (31) for inserting the stud (52).

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