TWM491932U - Chock - Google Patents

Description

Choke 【0001】

The present invention relates to a choke, and more particularly to a choke that can be produced by automated work.

【0002】

Today, with the rapid development of science and technology, more and more electronic products are developing in the direction of high efficiency, high power density, high reliability and low cost. . As an important circuit component, the choke has put forward higher requirements on its power and volume.

[0003]

The traditional choke is an annular choke. In the annular choke, whether it is coil winding or assembly of the choke finished product, it must be fully manual. However, the winding of the coil and the assembly of the finished product require a lot of labor.

[0004]

FIG. 1 is a schematic view showing a butterfly winding method of a coil of a conventional annular choke, and FIG. 2 is a schematic view of a finished structure. 1 and 2, taking the winding of the copper wire 1a in the direction A of the left side of FIG. 1 as an example, the worker on the production line first separates the two splits of the copper wire 1a from the middle of the core 1b to the upper left and the lower left respectively. Winding a number of turns, and then folding back and forth several turns, respectively, and then folding back and forth several turns. The copper wire 1a in the right B direction of the iron core 1b can be wound in the same manner. The finished product of the winding is shown in Figure 2.

[0005]

According to Fig. 2, after the winding is completed or before the winding, it is necessary to manually provide the insulating plate 1c in the middle of the core 1b, and after the winding ends, the iron core 1b around the copper wire 1a is mounted on the base 1d. It is fixed by using epoxy resin as the adhesive 1e.

[0006]

For the annular choke, the current industry is not able to achieve automated work, only manual work. Increasing labor costs have led to an increase in the cost of products, which has led to a decline in product competitiveness. In addition, the quality of the finished product produced by manual operation is unstable. Taking the winding link as an example, the manual winding is easy to cause the copper wire lacquer film to be damaged, so that the pressure resistance is poor. Moreover, the annular choke is bulky and occupies a large volume of the circuit board, and does not conform to the trend of miniaturization of electronic products.

【0007】

The purpose of the novel is to propose a new type of choke, which can realize automatic assembly and winding of the coil, realizes fully automatic operation, saves labor time and improves production efficiency.

[0008]

In order to achieve the above object, the present invention proposes a choke that can be assembled automatically, including:

【0009】

The iron core group has a first iron core and a second iron core, and the first iron core and the second iron core are detachably joined at both ends to form a closed shape;

[0010]

Two bobbins, each of which has a bobbin body having a core passage on the bobbin body, the core passage for piercing the core group;

[0011]

a spacer that can be fixedly coupled to the two bobbins;

[0012]

Winding is wound around two of the bobbins.

[0013]

In an embodiment of the present invention, each of the bobbins includes a latching portion, and the spacer includes a mating portion, and the engaging portion and the mating portion are coupled to each other by a snapping manner to make the interval The sheet is fixedly coupled to the two bobbins.

[0014]

In an embodiment of the novel choke, each of the bobbins further includes an upper flange and a lower flange respectively located at an upper portion and a lower portion of the bobbin body, the upper flange having a first engaging portion. The lower flange has a second snap portion;

[0015]

The spacer includes a spacer body, a first mating member and a second mating member, and a lower portion of the first mating member has a first engaging portion that is fixedly coupled to the first engaging portion, and an upper portion of the second mating member has a The second engaging portion cooperates with the fixed second engaging portion;

[0016]

Both ends of the first core and the second core respectively extend into the core passage of the bobbin.

[0017]

In an embodiment of the novel choke, the first core and the second core are bonded to each other.

[0018]

In an embodiment of the present invention, the first engaging portion and the second engaging portion are card slots, and the first mating portion and the second mating portion are a card block, the card block and the card. The shapes of the grooves cooperate with each other.

[0019]

In an embodiment of the novel choke, the block can be elastically deformed to be engaged in the card slot, and the spacer is fixedly coupled to the two bobbins.

[0020]

In an embodiment of the present invention, the first mating member is located at an upper portion of the spacer, the second mating member is located at a lower portion of the spacer, and the first mating member and the second mating member are elastically deformed. Engaged into the first latching portion and the second latching portion.

[0021]

In an embodiment of the novel choke, each of the bobbins includes a spacer disposed at a middle portion of the bobbin body such that each of the bobbins separates different winding regions .

[0022]

In an embodiment of the novel choke, each of the bobbins has a pin to connect the winding.

[0023]

In an embodiment of the novel choke, each of the upper flanges of the bobbin has two first engaging portions, the lower flange has two second engaging portions, and the spacer has four a first mating portion and four second mating portions.

[0024]

In an embodiment of the novel choke, the first mating member and the second mating member extend from a top and a bottom of the spacer body in a direction perpendicular to the spacer body.

[0056]

1a‧‧‧ copper wire

1b‧‧‧ iron core

1c‧‧‧insulation board

1d‧‧‧Base

1e‧‧‧Adhesive

A, B‧‧ direction

10‧‧‧ iron core group

11‧‧‧First core

12‧‧‧second core

20‧‧‧ Winding frame

21‧‧‧ Winding frame body

21a‧‧‧core channel

22‧‧‧Isolation

23‧‧‧ Upper flange

231‧‧‧First card joint

24‧‧‧lower flange

241‧‧‧Second card joint

30‧‧‧ Winding

40‧‧‧ Spacer

41‧‧‧ spacer body

42‧‧‧First fittings

421‧‧‧ First Cooperation Department

43‧‧‧Second fittings

431‧‧‧Second Matching Department

[0025]

Fig. 1 is a schematic view showing the winding manner of a conventional coil.

Figure 2 is a schematic view of a finished product wound using an existing coil winding method.

FIG. 3 is a schematic view showing the assembly of an embodiment of the novel choke.

FIG. 3A is an exploded perspective view of FIG. 3.

4 is a schematic view of a coil in an embodiment of the present novel choke.

Fig. 5 is a schematic view showing the skeleton of an embodiment of the novel choke.

Fig. 6 is a schematic view showing a spacer in an embodiment of the novel choke.

Figure 7 is a front elevational view of the choke shown in Figure 3.

[0026]

Example embodiments will now be described more fully with reference to the drawings. However, the example embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be Those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

[0027]

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are set forth However, those skilled in the art will appreciate that the technical solution of the present disclosure may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be employed. In other instances, well-known structures, materials or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

[0028]

FIG. 3 is a schematic view showing the assembly of an embodiment of the present type of choke; FIG. 3A is an exploded view of FIG. As shown in FIG. 3 and FIG. 3A, the choke in this embodiment includes a core group 10, two bobbins 20, a spacer 40, and a winding 30 wound around the bobbin 20 (wherein The line is shown in Figure 7). The core group 10 can be separated and separately passed through the two bobbins 20. The following description will be respectively made.

[0029]

Fig. 4 is a schematic view showing a core group in an embodiment of the novel choke. The core group 10 shown in FIG. 4 includes a first core 11 and a second core 12, both of which are U-shaped cores, and may have a square cross section. The first core 11 and the second core 12 include first ends 11a, 12a and second ends 11b, 12b, respectively. The first end 11a of the first core 11 and the first end 12a of the second core 12 can be butted, and the second end 11b of the first core 11 and the second end 12b of the second core 12 can be butted to form A core group 10 that is separately joined to form a closed shape. Wherein the first end 11a of the first core 11, the second end 11b of the first core 11, the first end 12a of the second core 12, and the second end 12b of the second core 12 have at least one of The colloids are bonded to bond the first core 11 and the second core 12 after abutting each other.

[0030]

In another embodiment, the first core 11 may be U-shaped or I-shaped, and the second core 12 may be I-shaped or U-shaped, which are combined with each other to form a closed core group 10.

[0031]

Fig. 5 is a schematic view showing a winding frame in an embodiment of the present type of choke. The two bobbins 20 may have the same or different structures. In the present embodiment, the two bobbins 20 have the same structure, and the bobbin 20 is taken as an example for illustration.

[0032]

As shown in FIG. 5, the bobbin 20 includes a bobbin body 21, a spacer 22, an upper flange 23, and a lower flange 24. The bobbin body 21 is a cylinder, and a core passage 21a is formed at the center of the cylinder. The core channel 21a is matched with the first core 11 and/or the second core 12 and at least one of the first core 11 and the second core 12 is disposed therein, the upper flange 23 and the lower flange 24 They are respectively located at the upper and lower portions of the bobbin body 21 and extend in a direction perpendicular to the core passage 21a. A first engaging portion 231 and a second engaging portion 241 are formed on the upper flange 23 and the lower flange 24 of the bobbin body 21, respectively. In this embodiment, the first engaging portion 231 and the second engaging portion 241 are respectively card slots. However, this novel is not limited to this.

[0033]

In the above embodiment, if the first core 11 and the second core 12 are both U-shaped cores, both of them are disposed in the core passage 21a of the two bobbins 20, if the first core 11 and the second core 12 are in the shape of an I and the other is U-shaped, wherein the U-shaped core of the two is passed through the core passage 21a of the two bobbins, and the other is U-shaped. Both ends of the iron core are fixed to the U-shaped iron core by, for example, bonding.

[0034]

The spacer 22 is located at a middle portion of the bobbin body 21 to form one or more slots on each of the bobbins 20. The slot can be wound with more than one coil 30, and the coil 30 has a plurality of turns and is wound around it. It is assumed that the direction intersects with the longitudinal direction of the core passage 21a at right angles. In the present embodiment, the spacer 22 forms two slots and is wound around the two coils 30 to increase the inductance of the bobbin 20. The positions of the first engaging portion 231 and the second engaging portion 241 correspond to each other in the longitudinal direction of the core passage 21a. The number of the first latching portion 231 and the second latching portion 241 are both at least one. In the embodiment, as shown in FIG. 5, the first latching portion 231 is two, and respectively located at the upper flange 23. At the two corners in the longitudinal direction, the number of the second engaging portions 241 is also two, and is located at two corners in the longitudinal direction of the lower flange 24, and corresponds to the positions of the two first engaging portions 231.

[0035]

It should be noted that, in the case that the number of the first latching portion 231 and the second latching portion 241 is plural, each of the first latching portions 231 may be the same or different, and each of the second latching portions 241 may be the same. The difference between the first latching portion 231 and the second latching portion 241 may be the same or different.

[0036]

Fig. 6 is a schematic view showing a spacer in an embodiment of the novel choke. As shown in FIG. 6, the spacer 40 includes a spacer body 41 and a first fitting member 42 and a second fitting member 43 extending from the top and the bottom of the spacer body 41 in a direction perpendicular to the spacer body 41, the first fitting member The lower end of the second fitting member 43 has a second engaging portion 431, and the upper end and the lower end of the spacer body 41 further have a first recess 41a and a second recess 41b, the first recess The 41a and the second recess 41b are respectively located in the middle of the middle and the bottom of the top of the spacer body 41.

[0037]

As shown in FIG. 6, the first engaging portion 421 and the second engaging portion 431 may be integrally formed with the first fitting member 42 and the second fitting member 43, or may be separately formed. The first engaging portion 421 matches the shape of the first engaging portion 231, and the second engaging portion 431 matches the shape of the second engaging portion 241. As shown in FIG. 4, in the process of assembling the spacer 40 to the two bobbins 20, the first engaging portion 421 and the second engaging portion 431 are elastically deformed so as to be able to be engaged with the first engaging portion 231 and The second engaging portion 241 is restored to the first engaging portion 231 and the second engaging portion 241 before returning to the elastic deformation. The first mating portion 421 and the second mating portion 431 may be bumps, bumps, and the like, and the present invention is not limited thereto.

[0038]

Figure 7 is a front elevational view of the choke shown in Figure 3. As shown in FIG. 7, after the assembly is completed, the first mating portion 421 and the second mating portion 431 are engaged into the first engaging portion 231 and the second engaging portion 241, thereby separating the two bobbins 20 from each other. The sheets 40 are fixed together. In addition, as shown in FIG. 7, due to the presence of the spacers 22, the machine can be separately wound in two regions of each of the bobbins 20.

[0039]

In the above embodiment, the shapes of the first engaging portion 421 and the second engaging portion 431 may be interchanged with the shapes of the first engaging portion 231 and the second engaging portion 241. For example, the first engaging portion 421 and the second engaging portion 431 may be a card slot, and the first engaging portion 231 and the second engaging portion 241 may be bumps, bumps, and the like, as long as the elastic deformation can be achieved by a slight elastic deformation. The portion and the corresponding snap portion can be engaged with each other.

[0040]

It should be noted that although the embodiment of the present invention is described by taking the manner in which the spacer and the bobbin are mutually engaged, it should be clear to those skilled in the art that any manner in which the spacer and the bobbin can be fixed to each other is It is feasible, and the new model is not limited to this.

[0041]

The assembly of the new choke is as follows:

[0042]

First, the copper wire is wound around two regions of the bobbin 20 by means of machine winding;

[0043]

Secondly, the spacer 40 is fixed at a specific position by a robot;

[0044]

Then, the two bobbins 20 are respectively inserted into the spacers 40 from the two sides of the spacer 40, the first engaging portions 231 and the first mating portions 421 are cooperatively disposed, and the second engaging portions 241 and the second mating portions are respectively provided. The parts 431 are arranged in cooperation with each other;

[0045]

Furthermore, the first core 11 and/or the second core 12 are inserted from the core passage 21a of the two bobbins 20, and the adhesives at the ends of the first core 11 and the second core 12 are used. The first core 11 and the second core 12 are fixed to form a choke in a fully automated manner.

[0046]

In the new embodiment, the bobbin is generally made of a material that is not easily deformed. For example, the bobbin is made of a thermosetting plastic, which has minimal elastic and plastic deformation under load, good heat resistance, and good dimensional stability of the product. It is not corroded by organic solvents and weak acids, weak bases, etc.; the spacers can be made of materials with certain elastic deformation ability, and the insulating sheets are made of thermoplastic materials: they have good mechanical properties, and their tensile strength and flexural modulus are high. When the bobbin and the spacer are combined with each other, the first mating portion and the second mating portion of the spacer are slightly deformed, and the high flexural modulus and tensile strength of the thermoplastic material are used to smoothly combine the bobbin .

[0047]

In the new embodiment, in addition to the function of fixing the bobbin, the spacer also functions as an insulation isolation, that is, the breakdown of the coil does not occur under the action of the transient overvoltage.

[0048]

Compared with the prior art, the present invention has at least the following advantages:

[0049]

First, the coil of the present invention can be fully automated and wounded, thereby avoiding the labor time extension caused by manual labor;

[0050]

Second, the reel and spacer of the present invention can be fully automated assembled by a robot, which improves efficiency;

[0051]

Third, the iron core of the present invention can be fully automated assembled by a robot, which improves efficiency;

[0052]

Fourth, a spacer is provided to better isolate the coils wound around each of the bobbins.

[0053]

Fifthly, the choke has a spacer, and the spacer not only functions as a fixed bobbin, but also functions as an insulation isolation, that is, the breakdown of the coil does not occur under the action of the transient overvoltage. .

[0054]

Sixth, the annular iron core is changed into two U-shaped butted iron cores or U-shaped and I-shaped iron cores. Under the premise of filtering out the same common mode signal, the volume of the prior art toroidal iron core needs to be The new two U-shaped cores are twice as large as the volume, so that the prior art shaped core on the circuit board occupies twice as much space as the U-shaped core of the present invention, that is, the turbulence provided by the present invention The device can reduce the space occupied by the board.

[0055]

The present invention has been described with reference to a few exemplary embodiments, and it is understood that the terms used are illustrative and exemplary and not restrictive. The present invention may be embodied in a variety of forms without departing from the spirit or scope of the invention. It is to be understood that the above-described embodiments are not limited to the details of the foregoing. It is to be understood that all changes and modifications that come within the scope of the claims and their equivalents are intended to be covered by the appended claims.

10‧‧‧ iron core group

11‧‧‧First core

12‧‧‧second core

20‧‧‧ Winding frame

21‧‧‧ Winding frame body

21a‧‧‧core channel

40‧‧‧ Spacer

Claims (11)

[Item 1] A choke device characterized by comprising:
The iron core group (10) has a first iron core (11) and a second iron core (12), and the two ends of the first iron core (11) and the second iron core (12) are detachably joined to each other Closed
Two bobbins (20), each of the bobbins (20) having a bobbin body (21) having a core passage (21a) on the bobbin body (21a) Providing the core group (10);
A spacer (40) is fixedly coupled to the two bobbins (20); and a winding (30) is respectively wound around each of the bobbins (20). [Item 2] The choke according to claim 1, wherein each of the bobbins (20) includes a snap portion, and the spacer (40) includes a mating portion, the engaging portion and the mating portion. The spacers (40) are fixedly coupled to the two bobbins (20) by means of a snap fit. [Item 3] The choke as described in claim 1, wherein
Each of the bobbins (20) further includes an upper flange (23) and a lower flange (24) respectively located at an upper portion and a lower portion of the bobbin body (21), the upper flange (23) having a first card a joint (231), the lower flange (24) has a second snap portion (241);
The spacer (40) includes a spacer body (41), a first mating member (42) and a second mating member (43), and a lower portion of the first mating member (42) has a first engaging portion (231) The first engaging portion (421) is fixed, and the upper portion of the second engaging member (43) has a second engaging portion (431) that is fixedly coupled to the second engaging portion (241);
Both ends of the first core (11) and the second core (12) extend into the core passages (21a) of the two bobbins (20), respectively. [Item 4] The choke according to claim 3, characterized in that the first core (11) and the second core (12) are bonded to each other. [Item 5] The choke of claim 3, wherein the first engaging portion (231) and the second engaging portion (241) are card slots, the first mating portion (421) and The second engaging portion (431) is a block, and the shape of the block and the slot cooperate with each other. [Item 6] The choke according to claim 5, wherein the block is elastically deformable to be engaged in the card slot, and the spacer (40) and the two bobbins (20) ) Fixed binding. [Item 7] The choke according to claim 3, wherein the first fitting member (42) is located at an upper portion of the spacer (40), and the second fitting member (43) is located at the spacer (40). The lower portion of the first engaging member (42) and the second engaging member (43) are elastically deformed to be engaged in the first engaging portion (231) and the second engaging portion (241). [Item 8] The choke according to claim 1, wherein each of the bobbins (20) comprises a spacer (22), and the spacer (22) is disposed on the bobbin body (21) The middle portion is such that each of the bobbins (20) separates different winding regions. [Item 9] The choke according to claim 1, wherein each of the bobbins (20) has a pin to connect the winding (30). [Item 10] The choke according to claim 3, characterized in that the upper flange (23) of each of the bobbins (20) has two first engaging portions (231), the lower flange (24) There are two second engaging portions (241) having four first engaging portions (421) and four second fitting portions (431). [Item 11] The choke according to claim 3, wherein the first fitting member (42) and the second fitting member (43) are perpendicular to the top and bottom of the spacer body (41). Extending in the direction of the spacer body (41).