CN216054119U

CN216054119U - Chip type winding common-mode inductor

Info

Publication number: CN216054119U
Application number: CN202121938800.XU
Authority: CN
Inventors: 王帅
Original assignee: Guangzhou Miden Electronics Co ltd
Current assignee: Guangzhou Miden Electronics Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-03-15
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a chip type winding common mode inductor, which relates to the technical field of inductors and comprises a shell, wherein an electromagnetic coil is installed on the inner wall of the shell, one end of the outer wall of the shell is connected with a spring, one end of the spring is connected with a sliding block, a limiting block is fixed on the outer wall of the sliding block, one end of the sliding block is connected with a connecting seat, one end of the connecting seat is connected with a clamping block, two fixing grooves are formed in the top end of the shell, which is located at two ends of a tin bar, and a plurality of elastic reeds are fixed on the inner wall of each fixing groove. According to the utility model, the plastic shell is detachably connected with the inner wall of the fixing groove through the elastic spring pieces, the plastic shell is plugged into the inner wall of the fixing groove, the elastic spring pieces at two sides clamp the plastic shell, and meanwhile, the plastic shell drives the wedge-shaped block to slide downwards to tightly push the upper end and the lower end of the plastic shell, so that the plastic shell is fixed on the inner wall of the fixing groove, and the tin bar is protected from deformation caused by extrusion of external force.

Description

Chip type winding common-mode inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to a chip winding common-mode inductor.

Background

An inductor, also called a choke, a reactor, a dynamic reactor, an element capable of converting electric energy into magnetic energy and storing the magnetic energy, wherein the inductor is similar to a transformer in structure but has only one winding, the inductor has certain inductance and only blocks the change of current, and if the inductor is in a state that no current passes through the inductor, the inductor tries to block the current from flowing through the inductor when a circuit is switched on; if the inductor is in a current passing state, the inductor will try to keep the current unchanged when the circuit is opened.

However, the inductor is easy to collide with other objects in the transportation process, so that the tin bar at the bottom is extruded to deform, the welding of the inductor and the circuit board is affected, the inductor is easy to be affected by external force in the welding process to cause position change, the signal transmission of the inductor in the circuit board is affected, and the normal work of the inductor in the circuit board is interfered.

Disclosure of Invention

The utility model aims to: in order to solve the problems that a tin bar used for welding at the bottom of an existing inductor is easy to deform in transportation and the welding position of the inductor is incorrect to influence signal transmission, a chip winding common-mode inductor is provided.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a piece formula wire winding common mode inductor, includes the shell, solenoid is installed to the inner wall of shell, the one end of the outer wall of shell is connected with the spring, and the one end of spring is connected with the slider, the outer wall of slider is fixed with the spacing piece, the one end of slider is connected with the connecting seat, and the one end of connecting seat is connected with the fixture block, the top of shell is provided with many tin bars, the both ends that the top of shell is located the tin bar are provided with two fixed slots, and the inner wall of fixed slot is fixed with a plurality of elasticity reeds, the upper and lower both ends of fixed slot inner wall are provided with two and carve the piece, and are a plurality of the centre department of elasticity reed is fixed with the plastic casing, one side of shell outer wall is fixed with two fin, and the inner wall of every fin is fixed with the heat conduction pad.

Preferably, the fixture block is connected with the fixture block through the connecting seat, and the inner wall of the limiting block is matched with the outer walls of the sliding block and the fixture block.

Preferably, the connecting seat is connected with the spring through a sliding block, and the sliding block and the spring are connected with the shell.

Preferably, the plastic shell is detachably connected with the inner wall of the fixing groove through an elastic reed, and the inner wall of the fixing groove is provided with a sliding groove matched with the wedge-shaped block.

Preferably, the outer wall of the shell is provided with a hollow groove matched with the radiating fins, and the heat conducting pad is connected with the outer wall of the shell through the radiating fins.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the plastic shell is detachably connected with the inner wall of the fixing groove through the elastic spring pieces, the plastic shell is plugged into the inner wall of the fixing groove, the elastic spring pieces at two sides clamp the plastic shell, and meanwhile, the plastic shell drives the wedge-shaped block to slide downwards to tightly push the upper end and the lower end of the plastic shell, so that the plastic shell is fixed on the inner wall of the fixing groove, and the tin bar is protected from deformation caused by extrusion of external force;

2. according to the utility model, the fixture block is connected with the fixture block through the connecting seat, the connecting seat is pressed to move downwards, the connecting rod extrudes the fixture block to move towards the outer wall to be connected with the fixed hole of the circuit board, the connecting seat is connected with the spring through the sliding block, meanwhile, the sliding block is extruded to move towards the spring on the inner wall of the limiting block, the sliding block is extruded to move reversely by the elastic direction of the spring, so that the fixture block is tightly attached to the fixed hole, the connection between the inductor and the circuit board is more compact, then, the welding between the tin bar and the circuit board is carried out, and the problem that the signal transmission is influenced by the incorrect welding position of the inductor is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a side view of the present invention.

In the figure: 1. a housing; 2. an electromagnetic coil; 3. a spring; 4. a slider; 5. a limiting block; 6. a connecting seat; 7. a clamping block; 8. tin bars; 9. fixing grooves; 10. an elastic reed; 11. a wedge-shaped block; 12. a plastic shell; 13. a heat sink; 14. a thermally conductive pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

The heat conducting pad (TC-TP-300A) and the heat radiating fins (298 x 40) mentioned in the utility model can be obtained in the market or by private order.

Referring to fig. 1-3, a sheet type winding common mode inductor includes a housing 1, an electromagnetic coil 2 is installed on an inner wall of the housing 1, one end of an outer wall of the housing 1 is connected with a spring 3, one end of the spring 3 is connected with a slider 4, a limiting block 5 is fixed on the outer wall of the slider 4, one end of the slider 4 is connected with a connecting seat 6, one end of the connecting seat 6 is connected with a clamping block 7, a plurality of tin bars 8 are arranged on a top end of the housing 1, two fixing grooves 9 are arranged at two ends of the top end of the housing 1, a plurality of elastic reeds 10 are fixed on inner walls of the fixing grooves 9, two wedge blocks 11 are arranged at upper and lower ends of inner walls of the fixing grooves 9, a plastic shell 12 is fixed at a middle of the plurality of elastic reeds 10, two cooling fins 13 are fixed on one side of the outer wall of the housing 1, and a heat conduction pad 14 is fixed on an inner wall of each cooling fin 13.

Please refer to fig. 1, the fixture block 7 is connected to the fixture block 7 through the connecting seat 6, and the inner wall of the limiting block 5 is engaged with the outer walls of the slider 4 and the fixture block 7, the connecting seat 6 is pressed to move downward, the fixture block 7 is pressed by the connecting rod to move toward the outer wall to be connected with the fixing hole of the circuit board, so as to fix the inductor on the circuit board.

Please refer to fig. 1, the connecting seat 6 is connected to the spring 3 through the sliding block 4, and the sliding block 4 is connected to the housing 1 through the spring 3, when the connecting seat 6 rotates downward, the sliding block 4 is pushed to move toward the spring 3 on the inner wall of the limiting block 5, the sliding block 4 is pushed to move in the opposite direction by the elastic force of the spring 3, so that the clamping block 7 is tightly attached to the fixing hole, and the connection between the inductor and the circuit board is more tight.

Please refer to fig. 2, the plastic shell 12 is detachably connected to the inner wall of the fixing groove 9 through the elastic spring 10, and the inner wall of the fixing groove 9 is provided with a sliding groove matched with the wedge-shaped block 11, the plastic shell 12 is inserted into the inner wall of the fixing groove 9, the elastic spring 10 at two sides tightly clamps the plastic shell 12, and the plastic shell 12 drives the wedge-shaped block 11 to slide downwards on the inner wall of the sliding groove, so as to tightly push the upper and lower ends of the plastic shell 12, fix the plastic shell 12 on the inner wall of the fixing groove 9, and protect the tin bar 8 from being deformed by the extrusion of an external force.

Please refer to fig. 3, the outer wall of the housing 1 is provided with a hollow groove matching with the heat sink 13, and the heat conducting pad 14 is connected with the outer wall of the housing 1 through the heat sink 13, when the temperature of the inductor rises, the heat sink 13 absorbs the heat energy inside the inductor and then transmits the heat energy to the inside of the heat conducting pad 14, the heat conducting pad 14 is made of heat-dissipating silica gel, which can rapidly dissipate the heat energy, so as to facilitate the heat dissipation of the inductor.

The working principle is as follows: firstly, when the inductor is used, the plastic shell 12 is detachably connected with the inner wall of the fixed groove 9 through the elastic reed 10, the inner wall of the fixed groove 9 is provided with a chute matched with the wedge-shaped block 11, the plastic shell 12 is inserted into the inner wall of the fixed groove 9, the elastic reeds 10 at two sides tightly clamp the plastic shell 12, meanwhile, the plastic shell 12 drives the wedge-shaped block 11 to slide downwards on the inner wall of the chute, the upper end and the lower end of the plastic shell 12 are tightly propped, the plastic shell 12 is fixed on the inner wall of the fixed groove 9, so that the tin bar 8 is protected from being extruded by external force to deform, the fixture block 7 is connected with the fixture block 7 through the connecting seat 6, the inner wall of the limiting block 5 is matched with the slide block 4 and the outer wall of the fixture block 7, the connecting seat 6 is pressed to move downwards, the fixture block 7 is extruded by the connecting rod to move towards the outer wall to be connected with the fixed hole of the circuit board, the connecting seat 6 is connected with the spring 3 through the slide block 4, and the slide block 4 is connected with the shell 1, meanwhile, the extrusion sliding block 4 moves towards the spring 3 on the inner wall of the limiting block 5, the elastic force direction of the spring 3 extrudes the sliding block 4 to move reversely, and then the clamping block 7 is tightly attached to the fixing hole, so that the inductor and the circuit board are more tightly connected, then welding between the tin bar 8 and the circuit board is carried out, the problem that the welding position of the inductor is incorrect and signal transmission is affected is solved, the outer wall of the shell 1 is provided with a hollow groove matched with the radiating fin 13, the heat conducting pad 14 is connected with the outer wall of the shell 1 through the radiating fin 13, when the temperature of the inductor rises, the radiating fin 13 absorbs heat inside the inductor, then the heat conducting pad is transmitted to the inside of the heat conducting pad 14, the heat conducting pad 14 is made of heat-radiating silica gel and can rapidly radiate the heat, and then the inductor is radiated.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A piece formula wire winding common mode inductor includes shell (1), its characterized in that: the electromagnetic coil (2) is installed on the inner wall of the shell (1), one end of the outer wall of the shell (1) is connected with the spring (3), one end of the spring (3) is connected with the sliding block (4), the limiting block (5) is fixed on the outer wall of the sliding block (4), one end of the sliding block (4) is connected with the connecting seat (6), one end of the connecting seat (6) is connected with the clamping block (7), a plurality of tin bars (8) are arranged at the top end of the shell (1), two fixing grooves (9) are formed in the two ends, located at the tin bars (8), of the top end of the shell (1), a plurality of elastic reeds (10) are fixed on the inner wall of each fixing groove (9), two wedge-shaped blocks (11) are arranged at the upper end and the lower end of the inner wall of each fixing groove (9), a plastic shell (12) is fixed in the middle of the plurality of the elastic reeds (10), two radiating fins (13) are fixed on one side of the outer wall of the shell (1), and a heat conducting pad (14) is fixed on the inner wall of each radiating fin (13).

2. A chip wound common mode inductor according to claim 1, characterized in that: the clamping block (7) is connected with the clamping block (7) through the connecting seat (6), and the inner wall of the limiting block (5) is matched with the outer walls of the sliding block (4) and the clamping block (7).

3. A chip wound common mode inductor according to claim 1, characterized in that: the connecting seat (6) is connected with the spring (3) through the sliding block (4), and the sliding block (4) is connected with the shell (1) through the spring (3).

4. A chip wound common mode inductor according to claim 1, characterized in that: the plastic shell (12) is detachably connected with the inner wall of the fixing groove (9) through an elastic reed (10), and the inner wall of the fixing groove (9) is provided with a sliding groove matched with the wedge-shaped block (11).

5. A chip wound common mode inductor according to claim 1, characterized in that: the outer wall of the shell (1) is provided with a hollow groove matched with the radiating fins (13), and the heat conducting pad (14) is connected with the outer wall of the shell (1) through the radiating fins (13).