CN214897993U

CN214897993U - Integrated current transformer

Info

Publication number: CN214897993U
Application number: CN202120513077.4U
Authority: CN
Inventors: 傅红仙; 邬永强; 朱耀钻; 陈炎; 王萌; 李明; 高平航; 张国宁
Original assignee: Zhejiang Wellsun Intelligent Technology Co Ltd
Current assignee: Zhejiang Wellsun Intelligent Technology Co Ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-11-26
Anticipated expiration: 2031-03-11

Abstract

The invention discloses an integrated current transformer, two output pins are respectively and electrically connected with a secondary side output end of a magnetic core of the current transformer, and are all positioned above the magnetic core shell, the leading-out pins are electrically connected with the magnetic core guide plate, and is positioned above the magnetic core guide plate, one end of the clamping block is respectively movably connected with the two output pins, and is positioned in the magnetic core shell, the other end of the clamping block is clamped with the plastic sliding block, and is positioned at the bottom of the plastic sliding block, the plastic sliding block is respectively movably connected with the two output pins and the leading-out pin and is positioned above the magnetic core shell, through the structure, the outgoing line mode is changed into a more convenient integrated structure from a traditional flexible wire plug pin type, the installation time of the whole meter on a production line can be effectively shortened, and the production efficiency is greatly improved.

Description

Integrated current transformer

Technical Field

The invention relates to the technical field of electric energy metering of an electric power system, in particular to an integrated current transformer.

Background

At present, a secondary side current output pin of the traditional current transformer of the domestic electric energy meter adopts a wire, the front end of the wire needs to be connected with a PCB plate by a crimping welding pin and fixed on a meter seat, the mode wastes material production and increases working procedures, and the reliability is low. With the increase of the application field of the electric energy meter, the electric energy meter products are continuously produced in large scale, the production tends to be full-automatic, and the current transformer wiring mode reflects the defects more and more.

Disclosure of Invention

The invention aims to provide an integrated current transformer, and aims to solve the technical problem that in the prior art, an output pin of a traditional current transformer adopts a lead, and a welding pin needs to be pressed during fixing, so that the production efficiency is low.

In order to achieve the above object, the present invention provides an integrated current transformer, including a current transformer magnetic core, a magnetic core housing, a magnetic core guide plate, output pins, lead-out pins, a clamping block and a plastic slider, wherein the magnetic core housing is detachably connected to the current transformer magnetic core and is located at an outer side of the current transformer magnetic core, the magnetic core guide plate is electrically connected to the current transformer magnetic core and is located at an outer side of the magnetic core housing, the number of the output pins is two, the two output pins are respectively electrically connected to a secondary side output terminal of the current transformer magnetic core and are both located above the magnetic core housing, the lead-out pins are electrically connected to the magnetic core guide plate and are located above the magnetic core guide plate, one end of the clamping block is respectively movably connected to the two output pins and is located inside the magnetic core housing, the other end of the clamping block is clamped with the plastic sliding block and is located at the bottom of the plastic sliding block, and the plastic sliding block is respectively movably connected with the two output pins and the leading-out pins and is located above the magnetic core shell.

The integrated current transformer further comprises terminal block binding posts, the number of the terminal block binding posts is two, the top ends of the terminal block binding posts are provided with fixed spot welding areas, and the terminal block binding posts are respectively fixedly connected with the magnetic core guide plate and located on two sides of the magnetic core guide plate.

Wherein, the magnetic core shell includes first casing, second casing and connecting block, the current transformer magnetic core with first casing can dismantle the connection, and is located the inside of first casing, the second casing with first casing fixed connection, and be located the top of first casing, the connecting block with first casing fixed connection, and be located the inside wall of first casing.

The magnetic core shell further comprises two limiting plates, the two limiting plates are fixedly connected with the second shell and located on the inner side wall of the second shell, and grooves are formed in the two limiting plates and the inner side wall of the second shell.

One end of the clamping block is movably connected with the second shell and is positioned in the groove.

The side of the connecting block is provided with a rectangular hole, and the magnetic core guide plate is detachably connected with the connecting block and is positioned in the rectangular hole.

The magnetic core shell further comprises a clamping sheet, and the clamping sheet is fixedly connected with the second shell and located on the side face of the second shell.

The invention has the beneficial effects that: through output stitch with draw the stitch and replace the wire with the current transformer magnetic core is connected, has reduced the process of crimping welding needle, the joint piece can two again output stitch is gone up to slide, when fixing, will the joint piece slides in the inside of second shell, through the limiting plate is to the one end of joint piece is spacing, the plastics slider passes output stitch with draw the stitch pressfitting downwards, will the other end of joint piece is fixed, will at last output stitch with draw the stitch and be connected with the PCB board after tin-plating, through the plastics slider, change the longer stitch of fixed length, through above-mentioned structure, the mode of being qualified for the next round of competitions is changed into more convenient integral type structure by traditional patchcord stylus type, can effectually shorten the installation time of whole table on the production line, has improved production efficiency greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of an integrated current transformer of the present invention.

Fig. 2 is a schematic diagram of a back structure of an integrated current transformer of the present invention.

Fig. 3 is a schematic diagram of the internal structure of an integrated current transformer of the present invention.

Fig. 4 is a schematic diagram of the structure of the magnetic core housing of the present invention.

FIG. 5 is a schematic structural diagram of a clamping block of the present invention

1-a current transformer magnetic core, 2-a magnetic core shell, 3-a magnetic core guide plate, 4-an output pin, 5-a leading-out pin, 6-a clamping block, 7-a plastic sliding block, 8-a terminal seat binding post, 9-a fixed spot welding area, 10-a first shell, 11-a second shell, 12-a connecting block, 13-a limiting plate, 14-a first transverse pin, 15-a first longitudinal pin, 16-a clamping hole, 17-a second transverse pin, 18-a second longitudinal pin, 19-a first mounting hole, 20-a second mounting hole, 21-a clamping groove and 22-a clamping sheet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 5, the present invention provides a technical solution: an integrated current transformer comprises a current transformer magnetic core 1, a magnetic core shell 2, a magnetic core guide plate 3, output pins 4, lead-out pins 5, a clamping block 6 and a plastic slider 7, wherein the magnetic core shell 2 is detachably connected with the current transformer magnetic core 1 and is positioned on the outer side of the current transformer magnetic core 1, the magnetic core guide plate 3 is electrically connected with the current transformer magnetic core 1 and is positioned on the outer side of the magnetic core shell 2, the number of the output pins 4 is two, the two output pins 4 are respectively electrically connected with the secondary side output end of the current transformer magnetic core 1 and are both positioned above the magnetic core shell 2, the lead-out pins 5 are electrically connected with the magnetic core guide plate 3 and are positioned above the magnetic core guide plate 3, one end of the clamping block 6 is respectively movably connected with the two output pins 4, and is located inside the magnetic core shell 2, the other end of the clamping block 6 with the plastic slider 7 is clamped and located at the bottom of the plastic slider 7, the plastic slider 7 is respectively movably connected with the two output pins 4 and the lead-out pins 5 and is located above the magnetic core shell 2.

In the present embodiment, the steps in production are: the secondary side output end of the magnetic core 1 of the current transformer is led out by the output pin 4, and the top of the magnetic core is tin-plated, so that the magnetic core is conveniently connected with a PCB (printed circuit board); the magnetic core guide plate 3 is led out by using the lead-out pins 5, and is buckled on the outer side of the mutual inductor body through molding, and the top of the mutual inductor body is tin-coated; the plastic sliding block 7 penetrates through the output pin 4 and the leading-out pin 5 to be pressed downwards; the terminal block binding post 8 is connected with the magnetic core guide plate 3 through a fixed spot welding area 9, and the output pins 4 and the lead-out pins 5 which are soldered are respectively connected with a PCB to finish the production of products; through the structure, the outlet mode during production is changed from the traditional flexible wire plug pin type into a more convenient integrated structure, the installation time of the whole meter on a production line can be effectively shortened, and the production efficiency is greatly improved.

Further, integral type current transformer still includes terminal block terminal 8, the quantity of terminal block terminal 8 is two, two the top of terminal block terminal 8 all is provided with fixed spot welding region 9, two terminal block terminal 8 respectively with magnetic core baffle 3 fixed connection, and be located the both sides of magnetic core baffle 3.

In the present embodiment, the core guide 3 and the terminal block post 8 are welded by spot welding through the fixed spot welding region 9.

Further, the magnetic core housing 2 includes a first housing 10, a second housing 11 and a connecting block 12, the current transformer magnetic core 1 is detachably connected to the first housing 10 and is located inside the first housing 10, the second housing 11 is fixedly connected to the first housing 10 and is located above the first housing 10, and the connecting block 12 is fixedly connected to the first housing 10 and is located on an inner side wall of the first housing 10; the magnetic core shell 2 further comprises two limiting plates 13, the two limiting plates 13 are respectively and fixedly connected with the second shell 11 and are both positioned on the inner side wall of the second shell 11, and grooves are formed in the two limiting plates 13 and the inner side wall of the second shell 11; one end of the clamping block 6 is movably connected with the second shell 11 and is positioned in the groove; a rectangular hole is formed in the side face of the connecting block 12, and the magnetic core guide plate 3 is detachably connected with the connecting block 12 and is located in the rectangular hole; the magnetic core outer shell 2 further comprises a clamping sheet 22, and the clamping sheet 22 is fixedly connected with the second shell 11 and is positioned on the side surface of the second shell 11.

In this embodiment, the first housing 10 wraps the current transformer magnetic core 1 to protect the current transformer, the output lead is led out from the current transformer magnetic core 1, passes through the second housing 11 and then passes through the clamping block 6, the clamping block 6 and the second housing 11 fix the position of the output lead, so as to increase stability, the connecting block 12 is used for installing the magnetic core conductor, two limiting plates 13 and the inner side wall of the second housing 11 form a groove, the clamping block 6 can be fixed in the groove, and then the fixing is completed by pressing and combining the plastic slider 7, after the lead is led out from the magnetic core conductor, because the length of the lead is long, the clamping sheet 22 and the second housing are used to form a clamping groove, the lead is led through the clamping groove, so as to complete positioning, the stability is increased.

Further, it includes first horizontal stitch 14 and first vertical stitch 15 to draw forth stitch 5, the bottom of first horizontal stitch 14 is provided with joint hole 16, and is first horizontal stitch with 3 electric connection of magnetic core baffle, and be located the below of magnetic core baffle 3, first vertical stitch 15 with first horizontal stitch 14 fixed connection, and be located the top of first horizontal stitch 14, two output stitch 4 all includes the horizontal stitch 17 of second and the vertical stitch 18 of second, two the horizontal stitch 17 of second all with joint piece 6 swing joint, and all be located the inside of joint piece 6, two the vertical stitch 18 of second respectively with correspond the horizontal stitch 17 fixed connection of second to be located the top of the horizontal stitch 17 of second that corresponds respectively.

In this embodiment, first horizontal stitch 14 through the bottom the joint hole 16 with magnetic core baffle 3 electric connection, first vertical stitch 15's length is longer, utilize to implement joint piece 22 with the second shell forms the draw-in groove, will first vertical stitch 15 passes the draw-in groove has increased the stability of drawing the wire, second horizontal stitch 17 with joint piece 6 is connected, and the one end of joint piece 6 with the vertical stitch 18 of second is connected, makes first vertical stitch 15 with the top surface of the vertical stitch 18 of second is located same horizontal plane, is convenient for be connected with the PCB board.

Further, the bottom of plastics slider 7 is provided with first mounting hole 19 and two second mounting holes 20 respectively, the side of plastics slider 7 is provided with joint groove 21, two second mounting hole 20 with joint groove 21 intercommunication, first vertical stitch 15 with plastics slider 7 swing joint, and be located the inside of first mounting hole 19, two the vertical stitch 18 of second all with plastics slider 7 swing joint, and be located corresponding the inside of second mounting hole 20.

In this embodiment, the lengths of the first vertical pin 15 and the second vertical pin 18 are both longer, the first mounting hole 19 and the two second mounting holes 20 of the plastic slider 7 are used for auxiliary fixation, the position of the clamping block 6 is limited, and the integrated current transformer can be mounted by pressing the plastic slider 7.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An integrated current transformer is characterized by comprising a current transformer magnetic core, a magnetic core shell, a magnetic core guide plate, output pins, lead-out pins, a clamping block and a plastic sliding block, wherein the magnetic core shell is detachably connected with the current transformer magnetic core and is positioned on the outer side of the current transformer magnetic core, the magnetic core guide plate is electrically connected with the current transformer magnetic core and is positioned on the outer side of the magnetic core shell, the number of the output pins is two, the two output pins are respectively and electrically connected with a secondary side output end of the current transformer magnetic core and are both positioned above the magnetic core shell, the lead-out pins are electrically connected with the magnetic core guide plate and are positioned above the magnetic core guide plate, one end of the clamping block is respectively and movably connected with the two output pins and is positioned inside the magnetic core shell, the other end of the clamping block is clamped with the plastic sliding block and is located at the bottom of the plastic sliding block, and the plastic sliding block is respectively movably connected with the two output pins and the leading-out pins and is located above the magnetic core shell.

2. The integrated current transformer according to claim 1, wherein the integrated current transformer further comprises two terminal block terminals, the two terminal block terminals are provided with fixed spot welding areas at the top ends thereof, and the two terminal block terminals are respectively fixedly connected with the magnetic core guide plate and located at two sides of the magnetic core guide plate.

3. The integrated current transformer of claim 2, wherein the magnetic core housing comprises a first shell, a second shell and a connecting block, the magnetic core of the current transformer is detachably connected with the first shell and is located inside the first shell, the second shell is fixedly connected with the first shell and is located above the first shell, and the connecting block is fixedly connected with the first shell and is located on the inner side wall of the first shell.

4. The integrated current transformer of claim 3, wherein the core shell further comprises two limiting plates, the two limiting plates are respectively and fixedly connected with the second shell and are located on the inner side wall of the second shell, and a groove is formed between the two limiting plates and the inner side wall of the second shell.

5. The integrated current transformer of claim 4, wherein one end of the clamping block is movably connected with the second shell and is located inside the groove.

6. The integrated current transformer according to claim 5, wherein a rectangular hole is formed in a side surface of the connection block, and the magnetic core guide is detachably connected to the connection block and is located inside the rectangular hole.

7. The integrated current transformer of claim 6, wherein the core shell further comprises a snap tab fixedly attached to the second shell and located on a side of the second shell.