CN207381257U - Patch type mutual inductor - Google Patents

Abstract

The utility model is related to a kind of patch type mutual inductors, and including function module, which includes：Skeleton, sets that there are two coil pins on the skeleton；Coil magnet ring, the coil magnet ring are fixed on the skeleton, which has two lead-out wires, and two lead-out wires are connected in two coil pins；Two input contact pins, the two input contact pins extend through the coil magnet ring, and the both ends of each input contact pin are respectively arranged on the both sides of coil magnet ring；The free end of two coil pins and the coplanar setting in both ends of the two input contact pins, to form a patch face of weld.

Description

Patch type mutual inductor

Technical field

The utility model belongs to electrical equipment technical field, and in particular to a kind of patch type micro-transformer of current.

Background technology

Micro-transformer of current is widely used in the every field such as instrument and meter, Electrical Safety protector, is examined for sampling The leakage current occurred in electric current and accident and failure in slowdown monitoring circuit realizes circuit control or protection.

Existing current transformer is primarily present following deficiency：

(1) instrument and meter, the micro-transformer of current used in Electrical Safety protector are all plug-in type or lead type member Part needs manually to be plugged on pcb board or lead is soldered on PCB in production, and operating efficiency is relatively low, and pcb board designs Flexibility ratio is limited；(2) primary busbar is needed to pass through the endoporus of mutual inductor when micro-transformer of current is applied mostly, so on the one hand Using cumbersome, in addition occupied space is bigger.(3) existing mutual inductor, function is more single, can only realize conventional metering Or can only realize that zero sequence measures, it can not realize the compatibility of function, smaller scope of application.

Utility model content

The utility model is intended to provide a kind of patch type mutual inductor, and two primary lines are integrated into interiors of products, simultaneously should Two of primary line inputs, two output pins can also patch welding, compact-sized, very convenient use is existing to solve The problem of current transformer function is single, grafting is cumbersome.

Concrete scheme is as follows：A kind of patch type mutual inductor, including function module, which includes：Skeleton, the skeleton On set there are two coil pin；Coil magnet ring, the coil magnet ring are fixed on the skeleton, which has two lead-out wires, Two lead-out wires are connected in two coil pins；Two input contact pins, the two input contact pins extend through the coil magnetic Ring, and the both ends of each input contact pin are respectively arranged on the both sides of coil magnet ring；The free end of two coil pins and two should The coplanar setting in both ends of contact pin is inputted, to form a patch face of weld.

Further, an oversheath is further included, which has the accommodating cavity of a bottom end opening；The function module deviates from One end of the patch face of weld is installed in the accommodating cavity by the bottom end opening and is fixed by casting glue and encapsulated.

Further, which is equipped with a mounting post, and the hollow setting of the mounting post has the cavity of both ends perforation； The coil magnet ring is sheathed in the mounting post to realize fixation, and the two input contact pins pass through the cavity to run through the coil magnet ring； In the cavity of the mounting post partition plate is additionally provided between the two input contact pins.

Further, the two input contact pins are in " several " font, and the face of weld is pasted altogether with the both ends for realizing the input contact pin.

Further, which includes cricoid magnetic core and the winding that is wound on the magnetic core, and the two of the winding End is respectively two lead-out wires.

Further, the material of the magnetic core is ultracrystallite, permalloy, silicon steel, ferrite, ferrocart core or iron sial.

The patch type mutual inductor of the utility model：First, the free end by two coil pins and all input contact pins The coplanar setting in both ends, with formed one patch the face of weld, realize element patch production function；Secondly, two input contact pins are mutual inductance Device primary side, as the input of mutual inductor, because have two-way input, therefore the purposes of the mutual inductor greatly increases：(1) mutual inductance Device is for conventional metering and overcurrent protection in use, two input contact pins are single or input unidirectional tested electricity simultaneously Stream；(2) for the mutual inductor for earth leakage protective when zero-sequence currents detect, the two input contact pins are respectively connected to reversed load electricity Stream.And output terminal of two coil pins as mutual inductor, connect the secondary side of mutual inductor.

Description of the drawings

Fig. 1 shows the utility model embodiment explosive view；

Fig. 2 shows Fig. 1 function module top views；

Fig. 3 shows Fig. 2 sectional views.

Specific embodiment

To further illustrate each embodiment, the utility model is provided with attached drawing.These attached drawings is in the utility model exposure A part for appearance mainly to illustrate embodiment, and can coordinate the associated description of specification to explain the running of embodiment original Reason.With reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and this practicality are new for cooperation The advantages of type.Component in figure is not necessarily to scale, and similar element numbers are conventionally used to indicate similar component.

The utility model is further illustrated in conjunction with the drawings and specific embodiments.

With reference to shown in Fig. 1 to Fig. 3, which provides a kind of patch type mutual inductor, including function module 10 and encapsulation Module, the package module include an oversheath 20, which includes skeleton 1, coil magnet ring 2 and two inputs and insert Pin, the first input contact pin 31 and second input contact pin 32.

1 main part of skeleton is ambroin, and end face is equipped with a vertical mounting post 12 thereon, which is cylinder The hollow structure of shape, the cavity be arranged inside there are one, and upper and lower ends penetrate through；The bottom one side of the skeleton 1 is set there are two coil Pin 11, two coil pins, 11 upper end are provided close to the position of mounting post side wall, lower end is prolonged as free end as connecting pin Extend the lower section of skeleton 1.

The coil magnet ring 2 includes cricoid magnetic core and the winding being wound on the magnetic core, the input and output of the winding Both ends are respectively a lead-out wire；The material of the magnetic core is ultracrystallite, permalloy, silicon steel, ferrite, ferrocart core or iron sial Etc. soft magnetisms substance.

The coil magnet ring 2 is horizontally disposed, and is arranged in the mounting post 12 and fixed, the coil magnetic by the axes sleeve of magnetic core Two lead-out wires of ring 2 are connected to the connecting pin of two coil pins 11, and are welded and fixed, to realize electrical connection.

First input contact pin 31 and second inputs 32 mirror image of contact pin and sets, and the first input contact pin 31 and second inputs contact pin 32 extend through the coil magnet ring, specifically：First input contact pin 31 and second inputs contact pin 32 in " several " font, and first is defeated Enter the input contact pin 32 of contact pin 31 and second and be each passed through the cavity of the mounting post 12 to run through the coil magnet ring 2, and make each be somebody's turn to do The both ends of input contact pin are respectively arranged on the both sides of coil magnet ring 2；Meanwhile contact pin 31 is inputted first in the cavity of the mounting post 12 And second input contact pin 32 between be additionally provided with a partition plate 121, with realize both good electrical isolate.

Since the first input contact pin 31 and second inputs contact pin 32 in " several " font, 31 He of the first input contact pin is realized All ends of second input contact pin 32 extend to the lower section of skeleton 1, and with the coplanar setting in free end of two coil pins 11, The plane is defined as the patch face of weld, to be suitable for pasting Welding production.

The oversheath 20 has the accommodating cavity of a closing, and there are one bottom end opening, the function moulds for the bottom tool of the accommodating cavity Block 10 is installed on by the bottom end opening in the accommodating cavity away from one end of the patch face of weld, is fixed then and by casting glue and encapsulated, And the patch face of weld is made to protrude out oversheath 20, compact-sized, convenient for assembling product, primary and secondary can be high pressure resistant (3KV).And it can be used for Precision current measures, and the signal detections mutual inductor structure design such as leakage current measurement pastes the design of the face of weld in actual use process Middle processing technology can be adjusted to the welding of SMT patches by traditional manual welding, so as to reduce secondary operation.

Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should This is understood, in the spirit and scope for not departing from the utility model that the appended claims are limited, in form and details On the utility model can be made a variety of changes, be the scope of protection of the utility model.

Claims (6)

1. a kind of patch type mutual inductor, it is characterised in that：

Including function module, which includes：

Skeleton, sets that there are two coil pins on the skeleton；

Coil magnet ring, the coil magnet ring are fixed on the skeleton, which has two lead-out wires, and two lead-out wires connect respectively It is connected in two coil pins；

Two input contact pins, the two input contact pins extend through the coil magnet ring, and the both ends of each input contact pin are set respectively In the both sides of coil magnet ring；

Totally one plane is set for the free end of two coil pins and the both ends of all input contact pins, which is the patch face of weld.

2. patch type mutual inductor according to claim 1, it is characterised in that：An oversheath is further included, which has The accommodating cavity of one bottom end opening；The function module is installed on by the bottom end opening in the accommodating cavity away from one end of the patch face of weld And it is fixed and encapsulated by casting glue.

3. patch type mutual inductor according to claim 1, it is characterised in that：The skeleton is equipped with a mounting post, the installation The hollow setting of column has the cavity of both ends perforation；

The coil magnet ring is sheathed in the mounting post to realize fixation, and the two input contact pins pass through the cavity to run through the coil magnetic Ring；In the cavity of the mounting post partition plate is additionally provided between the two input contact pins.

4. patch type mutual inductor according to claim 1, it is characterised in that：The two input contact pins are in " several " font, with reality Now the face of weld is pasted at the both ends of the input contact pin altogether.

5. patch type mutual inductor according to claim 1, it is characterised in that：The coil magnet ring include cricoid magnetic core and The winding being wound on the magnetic core, the both ends of the winding are respectively two lead-out wires.

6. patch type mutual inductor according to claim 5, it is characterised in that：The material of the magnetic core is ultracrystallite, perm closes Gold, silicon steel, ferrite, ferrocart core or iron sial.