KR20180115513A - Flexible printed circuit board having folding means - Google Patents

Abstract

The present invention relates to a flexible printed circuit board having a folding means. The present invention includes: a plate-shaped main body (10); a folded portion (20) extending from one side of the main body (10) and foldable in an outer surface direction of the main body (10); and a folding means (30). The folding means (30) protrudes from a side surface of the folded portion (20) and is formed with a latching groove (33). When the folded portion (20) is folded in the outer surface direction of the main body (10), a side surface of the main body (10) is inserted into the latching groove (33) to maintain the folded state. In a flexible circuit board of the present invention, the folding means (30) is integrally provided, and the folding means (30) fastens the folded portion of the flexible circuit board from both sides of the flexible circuit board. Therefore, the folded state of the flexible circuit board can be stably maintained without any additional components such as an adhesive tape.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible printed circuit board having folding means,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible circuit board, and more particularly, to a flexible circuit board having a latching structure to maintain a folded state.

FPCB (Flexible Printed Circuit Board) is an abbreviation of Flexible Printed Circuit Board. It is a kind of PCB (Printed Circuit Board) and it is flexible PCB made of polyimide as a main material. Such a flexible circuit board can be bent, and it can be miniaturized and lightweight. Therefore, it is attracting attention as a substitute for existing rigid PCB, and it is also applied to advanced equipments such as satellite equipment, military equipment and medical equipment. Recently, the demand for compact mobile devices such as smart phones has been rapidly increasing, and the application range of flexible circuit boards has been expanding to various home appliances.

Flexible circuit boards can be used in a variety of shapes to suit the internal environment of electronic devices due to their bendable and foldable features. For example, a flexible circuit board can be installed in a bent state to reduce the length of folding or remaining for redirection.

However, the flexible circuit board basically has a tendency to be unfolded, so that the flexible circuit board often fails to be bent or folded and unfolded again. In order to solve this problem, the conventional double-sided tape is used to keep the flexible circuit board folded or warped. However, this requires a separate double-sided tape, which lowers workability and increases the number of components. In addition, there is a disadvantage that reworking is difficult if a double-sided tape is used.

Japanese Laid-Open Patent No. 2009-93692

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to enable a flexible circuit board to be folded or bent by using a structure of a flexible circuit board itself without a separate adhesive tape .

According to an aspect of the present invention for achieving the above-mentioned object, the present invention provides a method of manufacturing a semiconductor device comprising a plate-shaped main body, a folded portion extending from one side of the main body and foldable in an outer surface direction of the main body, And a folding means for folding the folded portion in the direction of the outer surface of the main body so that the side surface of the main body is inserted into the engaging groove to maintain the folded state.

The folding means is constituted by a pair of spaced apart from each other, and the pair of folding means is provided with a latching groove in a direction facing each other.

The width between the innermost sides of the pair of engagement grooves facing each other is larger than the width of the main body and the width between the inlets of the pair of engagement grooves facing each other is smaller than the width of the main body.

The folding means includes a locking hook protruding from the side surface of the folded portion and a locking groove recessed in the inside of the locking hook to hook the side surface of the main body, and an inclined guide is formed on the outer surface of the locking hook.

A reinforcing base is formed at a portion where the folding means and the folding portion are connected to each other with a width larger than the hooking hook.

A folding line is formed between the folded portion and the main body.

The folding line extends obliquely at an angle of 45 degrees with respect to a direction in which the folded portion and the main body extend.

A connector PCB end is provided at the end of the main body opposite to the folded portion, and the connector PCB end is coupled to the mating connector.

The connector PCB ends are formed of a pair of parts of the main body that are bent and extended in parallel with each other, and a connection terminal is pressed and attached to the connector PCB end.

Wherein the first and second hooks are provided with a first hook and a second hook successively along the direction in which the folding means protrudes, and the first hook and the second hook are respectively provided with a first hook and a second hook, .

Cutting grooves are formed on the outer side of the folding means.

The flexible circuit board having the folding means according to the present invention as described above has the following effects.

In the present invention, the flexible circuit board is integrally provided with the folding means, and the folding means fixes the folded portion of the flexible circuit board from both sides. Therefore, the folded state of the flexible circuit board can be stably maintained without a separate part like an adhesive tape, so that the number of components is reduced and the workability is improved.

The inclined guide provided in the folding means in the present invention guides the edge of the flexible circuit board to be naturally caught in the process of folding the flexible circuit board. Therefore, the work of folding and fixing the flexible circuit board can be made easier.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an embodiment of a flexible circuit board provided with a folding means according to the present invention in a state in which it is held in a folded state; Fig.
FIG. 2 is a side view of a flexible printed circuit board having the folding means of FIG. 1; FIG.
Fig. 3 is a plan view showing a state in which the flexible circuit board provided with the folding means of Fig. 1 is unfolded before being folded. Fig.
FIG. 4 is a state in which the flexible circuit board having the folding means of FIG. 1 is folded and connected to the connector.
5 is a plan view showing another embodiment of the flexible circuit board having the folding means according to the present invention.
Fig. 6 is an enlarged plan view of the structure of the fastening means in still another embodiment of the flexible circuit board provided with the folding means according to the present invention; Fig.
7 (a) to 7 (c) are work state diagrams sequentially showing the folding process of the flexible circuit board of FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

A flexible circuit board (hereinafter referred to as a 'flexible circuit board') provided with the folding means 30 of the present invention can be used inside an electronic device, for example, inside a battery pack for an automobile. The flexible circuit board can be freely bent or folded due to its characteristics. Therefore, in the process of being installed inside the automobile battery pack, the operator can install the flexible circuit board while folding the flexible circuit board in various directions according to the internal environment. By using the present invention, the folded state of the flexible circuit board can be stably maintained.

First, as shown in FIG. 1, the main body 10 forms the framework of the present invention. The main body 10 is a plate-like structure extending along the longitudinal direction of the flexible circuit board, and various circuit patterns including a grounding portion may be formed therein. Although the main body 10 will be described separately from the folded portion 20 and the connector PCB end 50 for convenience of explanation in the present invention, the main body 10, the folded portion 20, (50) are all formed integrally with each other.

The main body 10 has a plurality of bent portions 11, 12, and 13. The bending portions 11, 12, and 13 are portions where a part of the main body 10 is bent and extended. The entire length of the flexible circuit board can be reduced through the bending portions 11, 12, and 13 . When the total length of the flexible circuit board is reduced through the bending portions 11, 12, and 13, the space occupied by the flexible circuit board in the product is reduced, and more efficient installation can be achieved. Of course, the bent portions 11, 12, and 13 may be used in a unfolded state without being bent according to the internal environment of the product. In this embodiment, the bent portions 11, 12, and 13 are composed of the first bent portion 11, the second bent portion 12, and the third bent portion 13, which is merely one example, The number and position of the bent portions 11, 12 and 13 can be changed.

The main body (10) has a first folded surface (17). The first folded surface 17 is a portion which is stacked facing the folded portion 20 when the folded portion 20 to be described below is folded with respect to the main body 10. The first folded surface 17 is a part of the main body 10 and is connected to the third bent portion 13.

A fold line 18 is located adjacent the first folded surface 17. The folding line 18 is a reference portion in which the folded portion 20 is folded with respect to the main body 10 and may be configured in a concave-convex form so that the folded portion 20 can be easily folded. The folding lines 18 may be composed of one or a plurality of folding lines 18. In this embodiment, a plurality of folding lines 18 extend in parallel.

In this embodiment, the folding line 18 is inclined at an angle of 45 degrees with respect to the direction in which the main body 10 and the folded portion 20 extend. As a result, when the folded portion 20 is completely folded with respect to the folding line 18, the extending direction is changed by 90 degrees. Referring to Fig. 3, when the folded portion 20 extending in the left direction is folded with respect to the folded fold line 18, the folded portion 20 extends toward the downward direction.

A folded portion 20 is connected to the main body 10. The folded portion 20 is a portion folded from the main body 10, so that the connecting direction of the flexible circuit board can be changed by the folded portion 20. As shown in FIGS. 1 and 2, the extension direction of the flexible circuit board is changed by 90 degrees by the folded portion 20, . And is connected to a specific component inside the product of the folded portion 20 so that the specific component can be electrically connected to the connector 100 to be described below through the flexible circuit board.

The folded portion (20) has a round portion (22). The round part 22 is a part where the folded part 20 is bent in a curved shape. The rounded part 22 may be formed according to the outer shape of the product to which the flexible circuit board is closely attached. Of course, the round part 22 may be omitted or may be composed of a plurality of parts depending on the form of the product.

The folded portion (20) has a second folded surface (27). The second folded surface 27 is connected to the first folded surface 17. When the folded portion 20 is folded in the outer surface direction of the main body 10, 1 folded surface 17 and is stacked. 1 shows a state where the second folded surface 27 is positioned above the first folded surface 17 and that the folded portion 20 is bent with respect to the folded line 18 .

The folded part (20) is provided with a folding means (30). The folding unit 30 is configured to hold the folded portion 20 folded in the direction of the outer surface of the main body 10. The folding unit 30 is formed to protrude from the side surface of the folded portion 20 and have an engagement groove 33. When the folded portion 20 is folded in the outer surface direction of the main body 10, Is inserted into the retaining groove 33 to maintain the folded state.

3, the folding means 30 includes a hook 35 protruding from a side surface of the folded portion 20, And a latching groove 33 which is recessed in the inside of the main body 10 and engages the side surface of the main body 10. The hooking hook 35 protrudes from the side of the folding means 30, more precisely on the side of the second folding face 27. The latching groove (33) is formed in the recessed portion of the latching hook (35).

The hooking hook 35 is provided with a slant guide 34. The inclined guide 34 extends obliquely to the upper surface of the hook 35 so that the side surface of the main body 10 is naturally caught by the inclined guide 34 in the process of folding the folded portion 20 33).

In this embodiment, the folding means 30 are formed of a pair of spaced apart. The pair of folding means (30) is engaged with the engaging groove (33) in a direction facing each other. Accordingly, both side surfaces of the main body 10 are positioned between the pair of folding means 30 and hooked on the respective engaging grooves 33. The folded state of the folded portion 20 can be more firmly held because the pair of folding means 30 is fixed to both sides of the main body 10 by being hooked.

A reinforcing base 31 is provided at a portion where the folding means 30 and the folded portion 20 are connected. The reinforcing base 31 is formed to have a wider width than the hook 35 and can be seen as a portion connecting the hook 35 and the folded portion 20. When the hooking hook 35 is bent, a large bending load may be applied to the folded portion of the hooking hook 35 to break it, and the reinforcing base 31 can reinforce the hooking hook 35.

2, the width l1 between the innermost sides of the pair of latching grooves 33 facing each other is larger than the width 13 of the main body 10, The width 12 between the inlets of the engaging grooves 33 is smaller than the width 13 of the main body 10. Accordingly, the both ends of the main body 10 can be stably held in the inside of the pair of latching grooves 33.

4, a connector PCB end 50 is provided at an end of the main body 10 opposite to the folded portion 20. As shown in FIG. The connector PCB end 50 is coupled to the mating connector 100. The connector connection part 53 provided at the connector PCB end 50 has a part of the connector PCB end 50 bent and extending in parallel with each other And a connection terminal (not shown) may be press-fitted to the connector connection part 53. [ Reference numeral 51 denotes a portion bent between the pair of connector connecting portions 53. 4 shows a state in which the connector connecting portion 53 is inserted into the insertion hole 110 of the mating connector 100.

5 shows another embodiment of the present invention. As shown in FIG. 5, the folding line 18 does not extend obliquely at an angle of 45 degrees, but extends in the longitudinal direction between the folded portion 20 and the main body 10 Or may be formed in an orthogonal direction. In this case, when the folded portion 20 is bent in the direction of the main body 10, the entire length of the flexible circuit board is overlapped.

On the other hand, Fig. 6 shows another embodiment of the present invention. As shown in FIG. 6, the folding means 30 may be provided with a first hooking hook 35a and a second hooking hook 35b along the direction in which the folding means 30 protrudes. The first latching hook 35a and the second latching hook 35b are formed with a first latching groove 33a and a second latching groove 33b, respectively. Both side surfaces of the main body 10 are engaged with either the first or second engagement groove 33a or 33b or the first and second engagement grooves 33a and 33b You can take it. The user may selectively use one of the first and second engagement grooves 33a and 33b depending on the internal structure of the product.

If only the second latching groove 33b is used, the first latching groove 33a and the first latching hook 35a are not necessary. Therefore, the user may remove the first hooking hook 35a from the hooking means with reference to the cutout groove 38. [

Hereinafter, a process of folding a flexible circuit board using the present invention will be described.

7, the process of folding the flexible circuit board is sequentially shown. 7 (a) is a flexible circuit board in the form of a flat plate. That is, the flexible circuit board is not yet folded. When the flexible circuit board is manufactured, it is a flat plate structure in the unfolded state. In this state, the flexible circuit board is folded or bent to use the flexible circuit board for the product.

7 (a), the folded portion 20 of the flexible printed circuit board can be folded and superimposed on the main body 10. For this purpose, the operator must first bend the folded portion 20 with respect to the folding line 18, and FIG. 7 (b) shows the folded portion 20 bent by about 90 degrees. The folding line 18 is extended at an angle of 45 degrees so that the folded portion 20 is folded in the direction orthogonal to the longitudinal direction of the main body 10 after the folded portion 20 is folded with respect to the folding line 18. [ .

In the process of folding the folded portion 20, the folding means 30 hooks both sides of the main body 10. More precisely, once the second folded surface 27 of the folded portion 20 has moved in a direction opposite to the first folded surface 17 of the main body 10, the folded portion 27, which is located on both sides of the second folded surface 27, (30) are located at positions adjacent to both side edges of the first folded surface (17). When the operator folds the folding means 30 so that both side edges of the first folding face 17 are fitted into the engaging groove 33 of the folding means 30, And can be fixed in a folded state in the outer surface direction.

At this time, the operator may grasp the folding means 30 and then bend it to fit the main body 10 into the folding means 30, but the end portion of the folded portion 20 provided with the folding means 30 So that the entire end portion of the folded portion 20 is directed downward beyond the outer surface of the main body 10 so that the folded portion 20 can be naturally inserted into the engaging groove 33 at both ends of the main body 10.

The hooking hook 35 is provided with a tilting guide 34 so that the side surface of the main body 10 can be naturally guided by the tilting guide 34 inside the tilting groove 33 You can take it.

Next, a plurality of bending portions 11, 12, 13 provided on the main body 10 are bent so that the flexible circuit board is installed in a limited space inside the product. Finally, a part of the main body 10 is bent Thereby allowing a pair of connector PCB ends 50 to extend side by side. Such a state is shown in Fig. 7 (c). When the terminal 50 of the connector PCB 50 is inserted into the insertion port 110 of the mating connector 100 in a state where the connection terminal is squeezed to the connector PCB stage 50, the connector can be electrically connected to the mating connector 100.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

In the above embodiment, a pair of the folding means 30 is exemplified. However, only one of the folding means 30 may be provided at the folded portion 20. Of course, the folding means 30 may be composed of a plurality of pairs.

10: main body 11, 12, 13:
17: first folded surface 18: folded line
20: folded portion 27: second folded face
30: Folding means 31:
33: engaging groove 34: inclined guide
35: Retaining hook 50: Connector PCB end
53: Connector connection

Claims (11)

A main body having a plate shape,
A folded portion extending from one side of the main body and foldable in an outer surface direction of the main body,
And a folding means for folding the folded portion in the direction of the outer surface of the main body so that the side surface of the main body is inserted into the engaging groove to maintain the folded state of the folded portion when the folded portion is folded in the direction of the outer surface of the main body. And the flexible circuit board.
The flexible printed circuit board according to claim 1, wherein the folding means is formed of a pair of spaced-apart folding means, and the pair of folding means is provided with folding means in which the engaging grooves are recessed in directions opposite to each other.
3. The slide fastener according to claim 2, wherein a width between the innermost sides of the pair of engaging grooves facing each other is larger than a width of the main body, and a width between the openings of the pair of engaging grooves facing each other is smaller than a width of the main body A flexible circuit board comprising a folding means.
4. A method according to any one of claims 1 to 3, wherein the folding means
An engaging hook projecting from a side surface of the folded portion,
And a latching groove formed on the inner side of the latching hook to engage a side surface of the main body,
And a folding means having an inclined guide formed on an outer surface of the hook.
The flexible circuit board according to claim 4, wherein the reinforcing base is provided at a portion where the folding means and the folding portion are connected to each other.
The flexible circuit board according to claim 1, wherein a folding line is formed between the folded portion and the main body.
7. The flexible circuit board according to claim 6, wherein the folding line has a folding means extending at an angle of 45 degrees with respect to a direction in which the folding line extends from the main body.
The flexible circuit board according to claim 1, wherein a connector PCB end is provided at an end of the main body opposite to the folded portion, and the connector PCB end is provided with a folding means coupled to the mating connector.
The flexible printed circuit board according to claim 8, wherein the connector PCB ends are formed as a pair of parts of the main body that are bent and extended in parallel with each other, and the connector terminal has a folding means provided with a connection terminal.
[2] The apparatus according to claim 1, wherein the folding means is provided with a first engaging hook and a second engaging hook successively along a direction in which the folding means protrudes, and the first engaging hook and the second engaging hook are provided with first engaging grooves And a folding means in which a second latching groove is formed.
The flexible circuit board according to claim 1, wherein the folding means is formed by cutting grooves formed outside the folding means.

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