CN217035370U

CN217035370U - Vertical common mode inductor that elasticity clamped

Info

Publication number: CN217035370U
Application number: CN202220778647.7U
Authority: CN
Inventors: 郭长海
Original assignee: Dongguan Meixi Electronic Co ltd
Current assignee: Dongguan Meixi Electronic Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-22
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a vertical common-mode inductor for elastic clamping, which comprises a framework, a magnetic core arranged on the framework, and a first coil and a second coil which surround the magnetic core, wherein the framework is provided with a bottom plate and a side plate which is integrally connected with the rear side of the bottom plate, the magnetic core, the first coil and the second coil are positioned above the bottom plate and positioned on the front side of the side plate, the upper end of the side plate is lower than the upper end of the magnetic core, the top of the side plate is provided with an elastic clamping arm which extends upwards, the upper end of the elastic clamping arm is provided with a clamping hook, after the magnetic core is arranged on the framework, the bottom of the magnetic core is in contact with the bottom plate for limiting, the elastic clamping arm is positioned on the rear side of the magnetic core, the clamping hook is limited on the top of the magnetic core, the elastic clamping arm is positioned on the rear side of the magnetic core and limited on the top of the magnetic core through the structural design of the elastic clamping arm, the clamping hook is limited on the top of the magnetic core, and the top of the magnetic core is limited, thus, the magnetic core is locked up and down, so that the magnetic core is convenient to assemble and easy to operate, and the assembly stability is improved.

Description

Vertical common mode inductor that elasticity clamped

Technical Field

The utility model relates to the technical field of transformers, in particular to a vertical common-mode inductor elastically clamped.

Background

The common mode inductor, also called a common mode choke coil, is commonly used in a switching power supply of a computer to filter common mode electromagnetic interference signals, and in board design, the common mode inductor also plays a role in EMI filtering and is used for inhibiting electromagnetic waves generated by a high-speed signal line from radiating and emitting outwards. The common mode inductor usually winds two groups of coils on a magnet, the part led out by each group of coils is respectively connected with a live wire and a zero line, the existing common mode inductor generally adopts a circular ring-shaped magnet, and round enameled wires are wound at two ends of the magnet.

In the prior art, a vertical common mode inductor comprises a framework, a magnetic core arranged on the framework and a coil wound on the magnetic core, wherein the framework is provided with a bottom plate and a side plate integrally connected to the rear side of the bottom plate, and the magnetic core is fixed through the framework; in order to improve the location to the magnetic core as far as possible in the industry at present, mainly adopt two kinds of modes, one is that set up the location lateral wall again in all the other sides of bottom plate, as far as possible with the location lateral wall up extend enough long, in order to improve the location to the magnetic core, however, the skeleton consumptive material increases, and the magnetic core installation back, the heat is difficult for effluvium, influence the heat dissipation, another is exactly through a large amount of glue with the magnetic core, increase sticky location between coil and the skeleton, this kind of mode, the expense is glued, and on the product that is not very suitable for to set up the louvre.

In addition, when the common mode inductor is used under special conditions, once the common mode inductor is collided, the internal accessories of the common mode inductor are easy to fall or loosen, and the common mode inductor is damaged and cannot be used.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects existing in the prior art, and a main object of the present invention is to provide a vertical common mode inductor with an elastic clamp, wherein the clamp hook is limited at the top of the magnetic core through a structural design of the elastic clamp arm, so as to effectively solve a problem in the conventional technology that the common mode inductor is damaged and cannot be used due to falling or loosening of internal accessories caused by collision.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a vertical common mode inductor clamped elastically comprises a framework, a magnetic core arranged on the framework, a first coil and a second coil, wherein the first coil and the second coil are wound on the magnetic core, the framework is provided with a bottom plate and a side plate integrally connected to the rear side of the bottom plate, the side plate extends upwards from the rear side of the bottom plate, the magnetic core, the first coil and the second coil are positioned above the bottom plate and positioned on the front side of the side plate,

the upper end of curb plate is less than the upper end of magnetic core, the top of curb plate is provided with the elasticity card arm that upwards extends, the upper end of elasticity card arm has the trip, the magnetic core is installed on the skeleton after, the bottom and the bottom plate of magnetic core contact spacingly, the elasticity card arm is located the rear side of magnetic core and the top that the trip is spacing in the magnetic core.

As a preferred scheme, the top of bottom plate protruding cushion between two parties, the cushion is from the front end that extends to the bottom plate forward backward, the bottom of magnetic core contacts spacingly with the top of cushion for form the heat dissipation clearance between the bottom of magnetic core and the region that lies in the cushion left and right side on the bottom plate, improve the radiating effect.

As a preferred scheme, the magnetic core has vertical setting and first wrapping post, the second wrapping post that is parallel to each other, the magnetic core still has horizontal setting and first spliced pole and the second spliced pole that is parallel to each other, first coil and second coil encircle in first wrapping post, second wrapping post respectively.

As a preferred scheme, the front side of the side plate is provided with an arc-shaped concave position to match the rear ends of the first coil and the second coil, so that the space is saved, and the positioning effect on the first coil and the second coil is also improved.

Preferably, a partition board extending forwards is arranged in the center of the front side of the side board, the partition board is located between the first coil and the second coil, and the top end of the partition board is lower than the top end of the side board.

As a preferable scheme, a first terminal, a second terminal, a third terminal and a fourth terminal are arranged at the bottom of the bottom plate, the first terminal and the second terminal are arranged at the position close to the front side of the bottom plate in a left-right spacing manner, and the third terminal and the fourth terminal are arranged at the position close to the rear side of the bottom plate in a left-right spacing manner; the top of the side plate is provided with two rear wire passing holes which are arranged on the left and right spacing surfaces, and the two rear wire passing holes are respectively positioned on the left side and the right side of the elastic clamping arm; the rear side of the side plate is provided with two wire passing grooves which are connected between the wire passing holes and the corresponding binding posts.

As a preferable scheme, the lower end terminals of the first coil and the second coil extend out of the inner ring area of the magnetic core, and are connected to the corresponding first terminal or second terminal after extending along the area between the corresponding first winding pillar or second winding pillar and the cushion block, the wiring of the first terminal or second terminal does not extend out of the product, the wiring is compact, and meanwhile the cushion block is used for separating the two terminals skillfully.

Compared with the prior art, the magnetic core assembly has the obvious advantages and beneficial effects, and particularly, according to the technical scheme, the magnetic core assembly is mainly characterized in that the elastic clamping arm is structurally designed, the elastic clamping arm is located on the rear side of the magnetic core, the clamping hook is limited on the top of the magnetic core, and the top of the magnetic core is limited, so that the magnetic core is locked up and down, the assembly is convenient and easy to operate, the assembly stability is improved, and the problem that in the traditional technology, the common-mode inductor is damaged and cannot be used due to the fact that internal accessories of the magnetic core fall or are loosened due to collision is effectively solved.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a rear view of an embodiment of the present invention;

fig. 3 is a side view of an embodiment of the utility model (including a circuit board to show one application thereof).

Description of the figures:

10. skeleton 11, bottom plate

111. A first terminal 112 and a second terminal

113. Third terminal 114, fourth terminal

115. Spacer 116, heat dissipation gap

12. Side plate 121 and elastic clamping arm

122. Hook 123 and rear wire through hole

124. Wire passing groove 13 and partition plate

14. Side direction locating plate

20. Magnetic core 21, first winding post

22. Second wrapping post 23 and first connecting post

24. Second connecting column 30, first coil

31. Terminal 40, second coil

50. A circuit board.

Detailed Description

Referring to fig. 1 to 3, specific structures of the embodiments of the present invention are shown.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "upper", "lower", "front", "rear", "left", "right", etc., indicating the orientation and positional relationship shown in the drawings or in normal wearing use, are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operation, and should not be construed as limiting the specific scope of the present invention.

A vertical common mode inductor clamped elastically comprises a framework 10, a magnetic core 20 arranged on the framework 10, and a first coil 30 and a second coil 40 which surround the magnetic core 20.

Skeleton 10 has bottom plate 11 and an organic whole and connects the curb plate 12 in bottom plate 11 rear side, the front side of curb plate 12 is provided with the arc concave position in order to match the rear end of first coil 30 and second coil 40, also improves the positioning action to first coil 30 and second coil 40 when saving space.

The bottom plate 11 is provided with a front side wall, a rear side wall, a left side wall and a right side wall which are arranged at a distance from each other in a front-rear manner, in a left-right manner, and the front side wall, the rear side wall, the left side wall and the right side wall enclose to form a positioning cavity on the bottom plate 11, the bottom of the bottom plate 11 is provided with a first terminal 111, a second terminal 112, a third terminal 113 and a fourth terminal 114, the first terminal 111 and the second terminal 112 are arranged at a position close to the front side of the bottom plate 11 at a distance from each other in a left-right manner, and the third terminal 113 and the fourth terminal 114 are arranged at a position close to the rear side of the bottom plate 11 at a distance from each other in a left-right manner; a cushion block 115 is convexly arranged in the center of the top of the bottom plate 11, the cushion block 115 extends from back to front to the front end of the bottom plate 11, a plurality of protruding blocks 117 are arranged at intervals at the bottom end of the bottom plate 11, and the bottom end surfaces of the protruding blocks 117 are lower than the bottom end surfaces of the first wiring terminal 111, the second wiring terminal 112, the third wiring terminal 113 and the fourth wiring terminal 114, so that after the first wiring terminal 111, the second wiring terminal 112, the third wiring terminal 113 and the fourth wiring terminal 114 extend into wiring holes in the circuit board 50, the bottom end surfaces of the protruding blocks 117 are limited by the upper end surface of the circuit board 50, and a gap can be formed between the circuit board 50 and the bottom of the bottom plate 11. The bottom of the magnetic core 20 is in contact with the top of the cushion block 115 for limiting, so that a heat dissipation gap 116 is formed between the bottom of the magnetic core 20 and the areas, located on the left side and the right side of the cushion block 115, on the bottom plate 11, and the heat dissipation effect is improved. Furthermore, a plurality of small heat dissipation holes may be formed in the bottom plate 11, and the heat dissipation holes are distributed on the left and right sides of the cushion block 115, and the heat dissipation holes are communicated with the heat dissipation gap 16 above the bottom plate 11 and the gap below the bottom plate 11, so that the convection effect is better.

The side plate 12 extends upwards from the rear side of the bottom plate 11, the upper end of the side plate 12 is lower than the upper end of the magnetic core 20, the top of the side plate 12 is provided with an elastic clamping arm 121 extending upwards, the upper end of the elastic clamping arm 121 is provided with a clamping hook 122, the top of the side plate 12 is provided with two rear wire passing holes 123 arranged on the left and right sides of the elastic clamping arm 121, and the two rear wire passing holes 123 are respectively positioned on the left and right sides of the elastic clamping arm 121; two wire passing grooves 124 are arranged on the rear side of the side plate 12, and the wire passing grooves 124 are connected between the wire passing holes and the corresponding binding posts. Here, the elastic clip arm 121 is integrally molded with the frame 10.

The front side of the side plate 12 is centrally provided with a partition plate 13 extending forwards, the partition plate 13 is located between the first coil 30 and the second coil 40, and the top end of the partition plate 13 is lower than the top end of the side plate 12.

Magnetic core 20, first coil 30, second coil 40 are located bottom plate 11 top and are located the front side of curb plate 12, magnetic core 20 has vertical setting and first wrapping post 21, the second wrapping post 22 that is parallel to each other, magnetic core 20 still has horizontal setting and first spliced pole 23 and the second spliced pole 24 that is parallel to each other, first coil 30 and second coil 40 encircle respectively in first wrapping post 21, second wrapping post 22, magnetic core 20 installs the back on skeleton 10, the bottom of magnetic core 20 contacts spacingly with bottom plate 11, elasticity card arm 121 is located the rear side of magnetic core 20 and trip 122 is spacing in the top of magnetic core 20.

The lower terminal 31 of the first coil 30 and the lower terminal 31 of the second coil 40 extend from the inner ring area of the magnetic core 20, and are connected to the corresponding first terminal 111 or second terminal 112 after extending along the area between the corresponding first winding post 21 or second winding post 22 and the spacer 115, and the wiring does not extend outside the product, so that the wiring is compact, and the spacer 115 is used for separating the two terminals 31.

The assembly process of this embodiment is detailed below:

when assembling the magnetic core 20, the elastic clip arm 121 is slightly moved outward, and deformed, the bottom of the magnetic core 20 is in contact with the bottom plate 11 for limitation, and then the elastic clip arm 121 is released to reset, at this time, the hook 122 is limited at the top of the magnetic core 20 to limit the top of the magnetic core 20, and thus, the magnetic core 20 is locked up and down. Preferably, it is considered that glue is applied to the top end surface of the pad 115 (preferably, a small amount of glue is applied), then the magnetic core 20 (in this case, the coil is also mounted on the magnetic core 20) is mounted in the frame 10, the bottom end of the magnetic core 20 is adhesively fixed to the pad 115, the outer side surface of the bottom of the magnetic core 20 is laterally positioned by the lateral positioning plates 14 of the frame 10 (the lateral positioning plates 14 are respectively extended upward from the left and right sides of the bottom plate 11), meanwhile, the rear ends of the first coil 30 and the second coil 40 are limited by the side plates 12, the lateral positioning plates 14 only need to be designed to be short, and can form a positioning cavity with the bottom plate 11, therefore, compared with the scheme in the conventional technology in which the positioning side wall needs to be designed to be longer, the short lateral positioning plates (and no lateral positioning plate needs to be arranged on the front side of the bottom plate 11, so that the front side of the bottom plate 11 is open) has a small shielding area, is favorable for improving the heat dissipation effect. Moreover, the positioning mode of the utility model can meet the requirement of positioning stability, does not need a large amount of glue injection, and can arrange the heat dissipation holes on the bottom plate 11, so that the heat dissipation design is more free.

The design of the utility model is mainly characterized in that the elastic clamping arm is arranged at the rear side of the magnetic core, the clamping hook is limited at the top of the magnetic core, and the top of the magnetic core is limited by the elastic clamping arm, so that the magnetic core is locked up and down, the assembly is convenient, the operation is easy, the assembly stability is improved, and the problem that the common-mode inductor cannot be used due to damage caused by falling or loosening of internal accessories caused by collision in the traditional technology is effectively solved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a vertical common mode inductance that elasticity clamped, its includes the skeleton and sets up the magnetic core on the skeleton and encircle first coil and second coil on the magnetic core, the skeleton has bottom plate and an organic whole and connects the curb plate in the bottom plate rear side, the curb plate extends the setting upwards from the rear side of bottom plate, magnetic core, first coil, second coil are located the bottom plate top and are located the front side of curb plate, its characterized in that:

2. The vertical common-mode inductor that claim 1 said in the elasticity clamps installs, characterized by: the top of bottom plate is protruding to be equipped with the cushion between two parties, the cushion is from the front end that extends to the bottom plate forward backward, the bottom of magnetic core contacts spacingly with the top of cushion, makes it forms heat dissipation clearance to lie in between the region on the cushion left and right side on the bottom of magnetic core and the bottom plate.

3. The vertical common-mode inductor clamped elastically as claimed in claim 2, wherein: the magnetic core has vertical setting and first wrapping post, the second wrapping post that is parallel to each other, the magnetic core still has horizontal setting and first spliced pole and the second spliced pole that is parallel to each other, first coil and second coil encircle in first wrapping post, second wrapping post respectively.

4. The vertical common-mode inductor clamped elastically as claimed in claim 1, wherein: the front side of the side plate is provided with an arc-shaped concave position to match the rear ends of the first coil and the second coil.

5. The vertical common-mode inductor clamped elastically as claimed in claim 1, wherein: the front side of curb plate is provided with the baffle that extends forward between two circles in the middle, the baffle is located first coil and second coil, just, the top of baffle is less than the top of curb plate.

6. The vertical common-mode inductor that claim 1 said in the elasticity clamps installs, characterized by: the bottom of the bottom plate is provided with a first binding post, a second binding post, a third binding post and a fourth binding post, the first binding post and the second binding post are arranged at the position close to the front side of the bottom plate in a left-right spacing mode, and the third binding post and the fourth binding post are arranged at the position close to the rear side of the bottom plate in a left-right spacing mode; the top of the side plate is provided with two rear wire through holes which are arranged on the left and right spacing surfaces and are respectively positioned on the left side and the right side of the elastic clamping arm; two wire passing grooves are arranged on the rear side of the side plate and are connected between the wire passing holes and the corresponding binding posts.

7. The vertical common-mode inductor clamped elastically as claimed in claim 3, wherein: and the lower end wiring ends of the first coil and the second coil extend out of the inner ring area of the magnetic core, and are connected to the corresponding first binding post or second binding post after extending along the area between the corresponding first winding post or second winding post and the cushion block.