JPH0720896Y2 - Case for split core connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a split core connecting case for connecting core split pieces each having a cylindrical body in a half-split shape to a cylindrical shape.

[Prior Art] Conventionally, a cylindrical ferrite core is pulled through a signal line such as an I / O line connecting a main body of an electronic device and its terminal, for example, a personal computer and a display, a personal computer and a printer, and a signal line. The noise that flows through is removed.

Of the ferrite cores described above, some of them are actually drawn into the signal line, and the one having the most noise eliminating effect is often selected and used. However, when trying to select an appropriate ferrite core while replacing the ferrite core in this way, when replacing the ferrite core of the already wired signal line, the cable connected by soldering or connector etc. However, there is a drawback in that it is necessary to remove the wire, replace the ferrite core, and then reconnect the wire.

Therefore, in order to eliminate such troublesome work, it has been conventionally practiced to divide the ferrite core into halves in advance and to use the ferrite core by connecting it in a cylindrical shape. As means for connecting the ferrite cores for this purpose, there have been adopted a band connection or a means for connecting the split half cores in a half split core case and connecting the core cases.

[Problems to be Solved by the Invention] When the split cores are split into half as described above, the magnetic resistance of the ferrite core increases and the desired characteristics are obtained unless the joint surfaces are in close contact. Absent. In the conventional coupling means using a band or a core case, since the coupled split cores have a certain amount of play between them, there is a problem that the characteristics of the ferrite core fluctuate greatly and the noise removal effect varies. .

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a core case in which the joint surfaces of the split cores are reliably brought into close contact with each other in a constant state.

[Means for Solving the Problem] That is, in order to achieve the above-mentioned object, the split core connecting case according to the present invention is for fixing split cores 6 and 7 in which a cylindrical body is split into a cylindrical shape. A case body 1, which is a case for connection, in which a pair of half cases 2 and 3 having internal shapes corresponding to the outer shapes of the split cores 6 and 7 are openably and closably connected on one side thereof. A connecting member 4 attached to the outer periphery of the connecting member 4 for fixing the closed case body 1 and protruding from the inner peripheral surface side of the connecting member 4.
The connector 4 is characterized in that it has core pressing protrusions 43, 43 which are inserted inside the case body 1 when mounted on the case body 1 and directly press the peripheral surface of the split core 7.

[Operation] In the split core connecting case according to the present invention, the split cores 6 each having a half-split shape are provided in the half cases 2 and 3 of the case body 1.
7 are housed, the case body 1 is closed, and the case body 1 is fixed by the connecting tool 4. As a result, the split cores 6 and 7 are fixed in a cylindrical shape. Then, at this time, the core pressing protrusions 43, 43 protruding from the inner peripheral surface side of the connecting tool 4 are inserted into the inside of the case body 1, and directly press the peripheral surface of the split core 7. Therefore, even if there is some play between the split cores 6 and 7 and the case body 1, the joint surface 6 of the split cores 6 and 7 is
3 and 73 are firmly attached. As a result, the magnetic resistance in the circumferential direction of the split cores 6 and 7 does not increase, and a stable electronic component with no characteristic fluctuation can be obtained.

[Embodiment] Next, an embodiment of the present invention will be specifically described with reference to the drawings.

The split core connecting case shown comprises a case body 1 composed of two half cases 2 and 3, and a connecting tool 4 for fixing these half cases 2 and 3 in a cylindrical shape.
Both of them are made of a material such as resin which is non-magnetic and has elasticity to some extent.

The half cases 2 and 3 have a semi-cylindrical shape that fits the outer shape of the split cores 6 and 7 obtained by dividing the cylindrical shape into two, and semicircular cutouts 21 and 31 are formed on the end faces thereof. Third
As shown in the figure, when the two half cases 2 and 3 are joined, the cutouts 21 and 31 are formed in the through hole 12 of the case body 1.
Then, a signal line or the like is passed through here. At this time, the split cores 6 and 7 housed in the half cases 2 and 3, respectively.
Are joined as a cylindrical core 5, and the central grooves 62 and 72 of the split cores 6 and 7 serve as through holes of the core 5 having the same central axis as the through hole 12 of the case body 1. One side of the half cases 2 and 3 are connected by flexible connecting members 11 and 11.

Two notches 24, 24 are formed on both sides of the central portion on the side of one half case 2 connected to the half case 3. Further, a joint 25 having a hook-shaped tip is projected from the center of the side of the half case 2 which is not connected, and alignment holes 22 and 22 are provided on both sides thereof. The cutouts 21 are formed on both inner end surfaces of the half case 2.
A convex strip 23 is formed in a semicircular shape so as to surround the.

On the side of the other half case 3 that is connected to the half case 2, the cutout portions 24, 24 of the one half case 2 are provided.
The connector attachment portions 34, 34 are formed in accordance with the positions of. Further, on the peripheral surface of the half case 3, a connector accommodating groove 36 conforming to the shape of the connector 4 is formed, and projection fitting holes 35, 35 are formed therein.

Further, on the non-connected side of the half case 3, alignment protrusions 32, 32 are provided so as to correspond to the alignment holes 22, 22 of the other half case 2. Semi-circular ridges 33 are formed on both inner end surfaces of the half case 3 so as to surround the cutout portion 31.

The connecting tool 4 is of a semi-cylindrical shape, one side of which is divided into two forks, and side U-shaped hooks 41, 41 are formed therein. Core pressing projections 43, 43 corresponding to the projection fitting holes 35, 35 of the half case 3 are projected from the inner peripheral surface of the connecting tool 4. Further, from the other end side of the connecting tool 4, a key-like joint 42 that is detachably connected to the joint 25 of the half case 2 is provided.

On the other hand, the split cores 6 and 7 connected by the split core connection case have a shape obtained by dividing the cylindrical core 5 in half.
Usually formed of ferrite. As described above, on the split surface side of the split cores 6 and 7, when the cylindrical core 5 is assembled, the grooves 62 and 72, which are through holes that lead to the signal lines, are formed.
Have. Further, the groove is formed on both end surfaces of the split cores 6 and 7.
Semicircular grooves 61 and 71 are provided so as to surround the edges of 52 and 72.

When this split core connecting case is used, the split cores 6 and 7 are first housed in the half cases 2 and 3, respectively. At this time, the protrusions 23 and 33 of the half cases 2 and 3 are fitted into the grooved portions 61 and 71 of the split cores 6 and 7, and the movement of the split cores 6 and 7 is restricted. The split cores 6 and 7 are
While fitting the grooves 61, 71 into the protrusions 23, 33, the grooves 6
By rotating 180 degrees around the central axis of 2, 72, it is fitted into the half cases 2 and 3 as shown in FIG. It can be inserted by pushing it while unfolding.

Next, the hooks 41, 41 of the connecting tool 4 are hooked on the connecting tool mounting portions 34, 34 of the half case 3, and the connecting tool 4 is fitted into the connecting tool receiving groove 36 on the peripheral surface of the half case 3. At this time, the connector 4
The core pressing protrusions 43, 43 of the half case 3 to the protrusion fitting hole 3
Insert into 5, 35 and insert the tip into the inside of half case 3. Furthermore, the positioning holes 22, 22 of the half case 2
The positioning protrusions 32, 32 of the half case 3 are fitted into the joint, the joint 42 is connected to the joint 25 of the half case 2, and the two half cases 2 and 3 are joined as shown in FIG.
In this state, the split cores 6 and 7 in the two half cases 2 and 3 which are housed in the two half cases 2 and 3 are combined as a cylindrical core 5, but are inserted into the projection fitting holes 35 and 35 of the half case 3. Since the core pressing protrusions 43, 43 of the inserted connecting tool 4 press the peripheral surface of the core 7, the joint surfaces 63, 73 of the cores 6, 7 are completely adhered.

When the cores 6 and 7 are divided, the joints 25 and 42 may be divided from each other and the half cases 2 and 3 may be opened with the connecting members 11 and 11 as fulcrums.

The core pressing protrusions 43, 43 shown in the figure are plate-shaped protrusions, but protrusions having an appropriate shape such as a columnar shape can be adopted. Also,
The connecting tool 4 is attached to the half case 3 by hooking its hooks 41, 41 on the connecting tool mounting portions 34, 34 of the half case 3, and is separated from the half case 3 by removing the hook. Of course, they may be integrally formed so that they cannot be separated.

[Effects of the Invention] As described above, according to the present invention, the split cores 6 and 7 in a half-divided shape can be easily combined into or separated from each other in a cylindrical shape. The split surfaces 63 and 73 of the cores 6 and 7 can be completely adhered. As a result, there is an effect that the coupled state of the core without the characteristic fluctuation can be obtained.

[Brief description of drawings]

FIG. 1 shows a half case showing an embodiment of the present invention,
FIG. 2 is a perspective view showing a state in which the connecting tool is separated, FIG. 2 is a perspective view in the same state seen from another direction, and FIG. 3 is a perspective view in a state in which the half case is closed by the connecting tool. 1 ... Case body, 2,3 ... Half case, 4 ... Coupling tool, 6,7 ... Split core, 43,43 ... Core pressing protrusion

Claims (1)

[Scope of utility model registration request] 1. A split core (6) in which a cylindrical body is divided into halves,
A connecting case for fixing (7) in a cylindrical shape, and a pair of half cases (2), (3) having internal shapes corresponding to the outer shapes of the split cores (6), (7). A case body (1) that is openably and closably connected on one side, a connector (4) attached to the outer periphery of the case body (1) and fixing the closed case body (1), and the connector ( 4) is provided so as to project from the inner peripheral surface side, and when the connecting tool (4) is attached to the case main body (1), it is inserted inside the case main body (1) and the peripheral surface of the split core (7). A case for connecting split cores, characterized in that it has core pressing protrusions (43) for directly pressing.