JPH0587919U - Core band - Google Patents

Abstract

(57) [Summary] [Purpose] A coil bobbin wound with a coil and a UU-shaped core inserted in the coil bobbin are fixed with a core band. [Structure] Two slits are provided at both ends of the core band, each tip is bent, and the UU is attached to the selected tip of each core band obtained by the slits.
The core and coil bobbin are clamped and fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a core band used in electronic equipment, in which a UU-shaped core or the like attached to a coil bobbin around which a coil is wound is attached to the coil bobbin.

[0002]

[Prior Art]

 An example of this type of conventional core band is shown in FIG. The conventional core band 13 is a thin band-shaped metal having a spring property, and has a tip bent at a predetermined length. As shown in FIGS. 5 and 6, a plurality of terminals 12c, 12c are provided at both ends. Terminal blocks 12 b and 12 b to which are attached are provided, and one leg of each of the UU-shaped cores 11 a and 11 b is inserted into a hollow coil bobbin 12 around which a coil 14 is wound and sandwiched by the core band 13.

[0003]

[Problems to be solved by the device]

 However, if the core band 13 has the above-mentioned configuration, the UU-shaped cores 11a and 11b inserted in the coil bobbin 12 will rattle between the coil bobbin 12 and the coil bobbin 12. When is added, problems such as growling noise occur. Also, if the bent portions 13a, 13a of the core band 13 only sandwich the flat surfaces of the UU-shaped cores 11a, 11b, when a force such as vibration is applied to the coil bobbin 12, the UU-shaped cores 11a, 11b will be moved. There is a problem that the sandwiched core band 13 is disengaged from the UU-shaped cores 11a and 11b. Therefore, it is necessary to fix the UU-shaped cores 11a and 11b and the coil bobbin 12, and the UU-shaped cores 11a and 11b and the core band 13 with an adhesive or the like.

For this reason, although the UU-shaped cores 11a and 11b are mounted on the coil bobbin 12 around which the coil 14 is wound and sandwiched between the core bands 13, the manufacturing process is complicated. Coil using 11a and 11b could not be supplied at low cost.

[0005]

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a plurality of slits 3d and 3d at both ends of a substantially rectangular plate made of a metal having spring properties. Protrusions 3c are provided on the divided ends, and the ends are bent into a substantially U shape. Also, the protrusions 3c and 3c provided on the core band 3 are inserted into the recesses 2c and 2c provided on the protrusions 2b and 2b attached to the flanges 2a and 2a of the coil bobbin 2, respectively. As a result, the UU-shaped cores 1a, 1a are held by the core band 3 and the coil bobbin 2.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view showing an embodiment of the core band of the present invention, FIG. 2 is a front view of a coil using the core band of FIG. 1, and FIG. 3 is a perspective view of the coil of FIG.

As shown in FIG. 1, the core band 3 of the present invention is made of a metal plate having a spring property, both ends are bent, and two or more slits 3d, 3d are provided at the tips thereof. In addition, protrusions 3c, 3c facing the inside of each of the tips are provided.

As shown in FIGS. 2 and 3, the coil bobbin 2 is hollow and provided with terminal blocks 2d and 2d having terminals 2e and 2e attached to both ends thereof, and an outward projecting portion 2b is a recess. The flanges 2a and 2a provided with 2c are provided, and the coil 4 is wound between the flanges 2a and 2a. The U-shaped cores 1a and 1a are combined from both ends to the hollow bobbin 2 around which this coil 4 is wound, and the UU-shaped cores 1a and 1a are separated by the slits 3d and 3d by the core band 3 of the present invention. The two U-shaped cores 1a, 1a are held by being sandwiched by the central tips 3b, 3b of the three. Further, both ends 3a, 3a of the core band 3 divided by the slits 3d, 3d hold down the outwardly protruding protrusions 2b, 2b provided on the flanges 2a, 2a of the coil bobbin 2. Also, the protrusions 3c, 3c provided at the ends on both sides of the core band 3 are put into the recesses 2c, 2c provided in the protrusions 2b, 2b of the flange 2a of the coil bobbin 2.

As a result, the two U-shaped cores 1a and 1a are sandwiched by the core band 3 made of a metal plate having a spring property so that the contact surfaces of the cores 1a and 1b are in close contact with each other. The coil bobbin 2 is also sandwiched and fixed by the core band 3.

Further, the flanges 2a of the coil bobbin 2 and the protrusions 3c and 3c provided on the both ends 3a and 3a of the core band 3 are inserted into the recesses 2c and 2c provided on the protrusions 2b and 2b of the core band 3 respectively. Is harder to come off than the coil bobbin 2.

[0011]

[Effect of the device]

 As described above, in the core band of the present invention, the spring property of the tip is independent due to the slit provided at the tip of the core band. Therefore, two U-shaped cores to be used and the coil are wound. The three parts of the coil bobbin can be sandwiched at the same time and fixed to each other, and it is possible to prevent the generation of a growl noise between the U-shaped core and the coil bobbin.

Further, by using the core band of the present invention, the number of parts used is reduced and the manufacturing process is simplified. This reduces the manufacturing cost and makes it possible to supply cheap coils.

The core band of the present invention can be bent or provided with slits to obtain the same effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a core band of the present invention.

FIG. 2 is a front view of a coil using the core band of the present invention.

3 is a perspective view of the coil of FIG. 2. FIG.

FIG. 4 is a perspective view of a conventional core band.

FIG. 5 is a perspective view of a coil using a conventional core band.

6 is a front view of the coil of FIG.

[Explanation of symbols]

 1 core 2 coil bobbin 3 core band 4 coil

Claims (1)

[Scope of utility model registration request] 1. A core band made of a metal having a spring property is provided with two slits or two or more slits at both ends, and the tip of the core band provided with the slits is bent, and one of the bent tips is formed. A core band characterized in that a protrusion is provided on the portion.