For electronic transformer magnetic core and comprise its electronic transformer
Technical field
The utility model relates to a kind of magnetic core, particularly a kind of magnetic core for electronic transformer and comprise its electronic transformer.
Background technology
High permeability magnetic core is mainly based on annular, account for more than 90%, be mainly used in common-mode filter, annular high frequency transformer, high-frequency mutual inductor etc., that is because toroidal core is a kind of closed magnetic circuit magnetic core, the general effective permeability than other shape magnetic cores is high, and magnetic energy conversion efficiency is the highest.But toroidal core has a shortcoming, that is exactly that their coil is very expensive.Because the magnetic core of other shapes uses coil winding machine can coiling economically rapidly, toroidal core then needs specific winding machines maybe must use winding by hand, and this makes toroidal core coiling cost higher.And during toroidal core coiling, precompute the length of copper cash, then by hand round and round from endoporus through, tension, this can cause the waste of the end of a thread to cut off unnecessary copper cash after complete, and owing to being manual winding, in winding process, often there is knotting and misaligned problem.
Utility model content
The technical problems to be solved in the utility model uses existing toroidal core to manufacture electronic transformer cannot to realize automated production and the higher defect of cost to overcome, and provides a kind of magnetic core for electronic transformer and comprise its electronic transformer.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of magnetic core for electronic transformer, its feature is, it includes: a columned first magnetic post, a columned second magnetic post, one first connector, one second connector, the two ends of described first magnetic post are fixedly connected with one end of described first connector, one end of described second connector respectively, and the two ends of described second magnetic post are fixedly connected with the other end of described first connector, the other end of described second connector respectively.
Preferably, described first magnetic post is identical with the shape of described second magnetic post, and described first connector is identical with the shape of described second connector.
Preferably, the ratio range of the sectional area of described first magnetic post and the sectional area of described first connector is 0.8-1.
Preferably, described magnetic core is square shape.This shape makes magnetic core entirety form a closed magnetic circuit.
Preferably, described magnetic core is manganese-zinc ferrite soft magnetism material.
The utility model also provides a kind of electronic transformer, and its feature is, it comprises magnetic core as above.
Preferably, described electronic transformer also comprises a pair bobbin, bobbin described in two is sheathed on described first magnetic post, described second magnetic post respectively, and the diameter of the outer wall of described first magnetic post, described second magnetic post is all less than the diameter of the inwall of described bobbin.
Preferably, described bobbin is made up of two and half skeletons of mutual clamping.
Preferably, at least one end of described bobbin has skeleton gear.Skeleton gear is used for being engaged mutually with the gear of fully automatic wire winding machine, to realize the rotation of bobbin.
Preferably, described bobbin is plastic material.
Positive progressive effect of the present utility model is: by using the magnetic core of square shape and install bobbin on magnetic core, make it possible to utilize fully automatic wire winding machine to come to magnetic core coiling, manufacture the electronic transformer with closed magnetic circuit, improve operating efficiency, product quality, decrease the waste of copper cash, reduce production cost.
Accompanying drawing explanation
Fig. 1 be the utility model one embodiment for the magnetic core of electronic transformer and the structural representation of bobbin.
Fig. 2 is the structural representation of the magnetic core for electronic transformer of the utility model one embodiment.
Fig. 3 is the vertical view of the magnetic core for electronic transformer of the utility model one embodiment.
Fig. 4 is the structural representation of the bobbin of the electronic transformer of the utility model one embodiment.
Description of reference numerals:
First magnetic post: 1
First connector: 2
Second magnetic post: 3
Second connector: 4
Bobbin: 11,31
Skeleton gear: 12,32
Half skeleton: 121,122
Copper cash: 14
Embodiment
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
Embodiment 1
Understood incorporated by reference to Fig. 1, a kind of magnetic core for electronic transformer, it includes: columned second magnetic post 3,1 first connector 2,1 second connector 4 of a columned first magnetic post 1, and magnetic core entirety is the square shape closed, to form a closed magnetic circuit.Magnetic core is manganese-zinc ferrite soft magnetism material, and this material commercially.
Understood incorporated by reference to Fig. 2-3, the two ends of the first magnetic post 1 are fixedly connected with one end of the first connector 2, one end of the second connector 4 respectively, and the two ends of the second magnetic post 3 are fixedly connected with the other end of the first connector 2, the other end of the second connector 4 respectively.First magnetic post 1 is identical with the shape of the second magnetic post 3.First connector 2 is identical with the shape of the second connector 4, and the first connector 2 and the second connector 4 can be cylindrical or rectangle.The ratio range of the sectional area of the first magnetic post 1 and the sectional area of the first connector 2 is 0.8-1.The sectional area of the first magnetic post 1 equals the sectional area of alternative toroidal core.
Embodiment 2
The utility model also provides a kind of electronic transformer comprising the magnetic core for electronic transformer of embodiment 1.
Understood incorporated by reference to Fig. 1, a kind of electronic transformer of the magnetic core for electronic transformer, this electronic transformer also comprises a pair bobbin 11,31, and bobbin 11,31 is sheathed on the first magnetic post 1, second magnetic post 3 respectively.Diameter due to the outer wall of the first magnetic post 1 is less than the diameter of the inwall of bobbin 11, the diameter of the outer wall of the second magnetic post 3 is all less than the diameter of the inwall of bobbin 31, therefore, bobbin 11 can rotate around the first magnetic post 1, and bobbin 31 can rotate around the second magnetic post 3.Bobbin 11,13 is plastic material.
Understood incorporated by reference to Fig. 1, Fig. 4, bobbin 11 is made up of half skeleton 121,122 of mutual clamping, the middle part of bobbin 11 have for be wound around copper cash 14 around pipe 13.At least one end of bobbin 11 has skeleton gear 12; One end of bobbin 31 has skeleton gear 32.During assembling, two and half skeletons 121,122 of symmetry to be gripping on the first magnetic post on 1 and to form bobbin 11.
During coiling, will install the magnetic core clamping of bobbin on fully automatic wire winding machine, the transmitting gear occlusion skeleton gear of fully automatic wire winding machine, sets winding turns, opens fully automatic wire winding machine.The gear driven bobbin of fully automatic wire winding machine rotates, and copper cash is neatly wound on bobbin accurately, cuts off copper cash (not waste), complete the coiling work of electronic transformer after completing winding.
Use magnetic core of the present utility model to manufacture electronic transformer to contrast with the advantage using traditional endless magnetic core to manufacture electronic transformer:
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection range of the present utility model.