JPH0562018U - Coil bobbin - Google Patents

Abstract

(57) [Abstract] [Purpose] One of the flanges of the winding frame having thick flanges on the left and right ends of the tubular winding core is used as the coil bobbin flange and the core fixing cover, and the U-shaped coil is fitted and fixed. By insulating the U-shaped coil with a non-conductive material and applying a cover for fixing the core, insulation can be secured, insulation breakdown is prevented, and it can be formed at the tip of the U-shaped coil when inserting the U-shaped coil into the collar. To provide a coil bobbin that prevents the collar from being damaged by the burrs that are present. [Structure] A core fixing cover having an upper projecting portion 8 and a lower projecting portion 9 so as to be joined to a winding core on a collar 1B having an upper cover 6 and a lower cover 7 for protecting the U-shaped coil 5 from the outside. This is a transformer coil bobbin in which 1A is mounted, a U-shaped coil 5 is fixed while being fixed from above and below, and a magnetic core 4 is held in the central groove of the flange 1B and the other one of the flanges.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a coil bobbin for a transformer in which a U-shaped coil is embedded.

[0002]

[Prior Art]

 FIG. 4 is a perspective view of a conventional coil bobbin. FIG. 5 is a sectional view of a conventional coil bobbin. As shown in FIG. 4, a U-shaped primary coil having a U-shaped primary coil and one turn of the U-shaped coil 5 is embedded in the collar 1, and a winding 3 is provided between the collar 1 and the collar 2. The magnetic core 4 was inserted from both sides of the flange to form the coil bobbin for the transformer. FIG. 5 is a cross-sectional view of a coil bobbin for a transformer, in which a U-shaped coil 5 is embedded in a collar 1, a winding 3 is applied to a winding core, and the U-shaped coil 5 is held through the collar 1. ..

[0003]

[Problems to be solved by the device]

 In the conventional coil bobbin for transformer, the insulation distance between the primary coil and the secondary coil cannot be secured, and since the upper surface of the U-shaped coil 5 is a space, dielectric breakdown due to foreign matter and U-shaped When inserting the coil 5 into the collar 1, an accident occurred that the collar was damaged by the burr formed on the tip of the coil formed in a U shape. According to the present invention, a one-turn U-shaped coil attached to a collar is fitted with a collar of a coil bobbin having an upper cover and a lower cover and a core fixing cover having an upper protruding portion and a lower protruding portion. An object of the present invention is to provide a coil bobbin which is fixed and insulates the periphery of a U-shaped coil with a non-conductive material.

[0004]

[Means for Solving the Problems]

 According to the present invention, a U-shaped coil sandwiching a winding core is embedded in one flange of a winding frame having thick flanges on the left and right ends of a tubular winding core, and a winding is applied to the winding frame of the other flange. In the coil bobbin, the upper and lower covers of the collar of the coil bobbin around the embedded U-shaped coil, and the upper and lower protrusions of the core fixing cover made of magnetic material provide insulation protection between live parts of different polarities. A coil bobbin having a structure.

[0005]

[Action]

 That is, according to the present invention, one flange portion of a winding frame having thick flanges at both left and right ends of a tubular winding core is provided, and a core fixing cover having a flange having an upper cover and a lower cover, an upper protruding portion and a lower protruding portion. -The U-shaped coil is fitted and fixed, the U-shaped coil is insulated with a non-conductive material, and the insulation can be secured by applying a cover to prevent dielectric breakdown, and when inserting the U-shaped coil into the collar, It is possible to provide a coil bobbin that prevents the collar from being damaged by burrs formed on the tip of the U-shaped coil. That is, the upper surface of the U-shaped coil is covered by the upper cover of the flange and the upper protruding portion of the core fixing cover, so that dielectric breakdown due to foreign matter is eliminated. Also, in the case of the collar being damaged by the burr of the U-shaped coil, instead of inserting the U-shaped coil into the hole of the collar, a collar with an upper cover and a lower cover, a core fixing with an upper protruding portion and a lower protruding portion is used. Since the U-shaped coil is attached by fitting the cover for the U-shaped coil, the brim is not damaged regardless of whether the U-shaped coil has burrs or not.

[0006]

【Example】

 FIG. 1 is a perspective view of a coil bobbin according to the present invention. FIG. 2 is a sectional view of the coil bobbin of the present invention. FIG. 3 is a perspective view showing details of the structure of the coil bobbin of the present invention. As shown in FIG. 2, a collar 2 having a pin terminal attached to one of the cylindrical cores (see FIG. 3) and a collar having an upper cover 6 and a lower cover 7 for protecting the U-shaped coil 5 from the outside. A core fixing cover 1A having an upper projecting portion 8 and a lower projecting portion 9 so as to be joined to the winding core is incorporated into 1B while fixing the U-shaped coil 5 from above and below, and the core fixing cover 1A and the collar 2 are attached. The magnetic core 4 is held in the central groove (see FIG. 3) to form a coil bobbin for a transformer. By adopting this structure, the upper surface of the U-shaped coil 5 is covered, and it is possible to prevent dielectric breakdown due to foreign matter and damage to the collar due to burrs. In FIG. 3, a winding 3 is provided around a core fixing cover 1A, a collar 1B and a collar 2 and a U-shaped coil 5 is sandwiched between the core fixing cover 1A and the collar 1B, and two magnetic cores 4 are provided. It is a coil bobbin for a transformer that is mounted and assembled. The shapes of the upper cover 6 and the lower cover 7 formed on the collar 1B are more easily understood, and the configuration of the upper protruding portion 8 and the lower protruding portion 9 (not shown) of the core fixing cover 1A and the U-shaped coil is shown. Has been. FIG. 1 shows a completed assembly of the transformer coil bobbin shown in FIG. 2, which comprises two magnetic cores 4, a core fixing cover 1A and a collar 1B, and a winding 3 and a collar 2.

[0007]

[Effect of the device]

 By using the coil bobbin according to the present invention, the insulation distance between different charging parts is secured, the dielectric breakdown due to the inclusion of foreign matter and the accident such as the damage to the collar due to the burr formed on the tip of the U-shaped coil are eliminated. The coil bobbin can now be supplied.

[Brief description of drawings]

FIG. 1 is a perspective view of a coil bobbin according to the present invention.

FIG. 2 is a sectional view of a coil bobbin according to the present invention.

FIG. 3 is a perspective view showing the structure of a coil bobbin according to the present invention.

FIG. 4 is a perspective view of a conventional coil bobbin.

FIG. 5 is a sectional view of a conventional coil bobbin.

[Explanation of symbols]

 1,2,1B Tsuba 1A Core fixing cover 3 Winding 4 Magnetic core 5 U-shaped coil 6 Upper cover 7 Lower cover 8 Upper protrusion 9 Lower protrusion

Claims (1)

[Scope of utility model registration request] 1. A winding frame having thick flanges on the left and right ends of a tubular winding core, in which a U-shaped coil sandwiching the winding core is embedded in one of the flanges, and a winding is applied to the winding frame of the other flange. In the coil bobbin, the surroundings of the embedded U-shaped coil are insulated and protected between the charging parts of different polarities by the upper and lower covers of the collar of the coil bobbin and the upper and lower protrusions of the magnetic core fixing cover. A coil bobbin having a structure.