JP5323326B2 - Connection method between electronic components and flat cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for connecting an electronic component and a flat cable, by which method an electronic component to which two or more terminals are connected highly precisely is used to connect the terminals to a flat cable with high positional precision. <P>SOLUTION: According to the method for connecting the electronic component and the flat cable, an electronic component unit in which two terminals 14 are connected to the electronic component LED 10 in highly precise positioning is used to connect two terminals 14 highly precisely to the flat cable 20. Since the LED 10 and the terminals 14 are connected highly precisely in advance, connecting the terminal 14 to the flat cable 20 highly precisely at steps S4 and S7 allows connection of the LED 10 to the flat cable 20, while keeping the relative positional relation between the LED 10 and the flat cable 20 at highly precise level. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a method for connecting an electronic component and a flat cable, which require high accuracy in the connection position.

  As a conventional method of connecting an electronic component to a flat cable, it is common to connect the electronic component to the electronic component using a connector attached to the end of the flat cable (for example, Patent Document 1). In addition, when connecting electronic components directly to the conductors in the flat cable, conventionally, separate electronic components and connection terminals are prepared, and the required number of terminals are sequentially attached to the electronic component and the flat cable one by one. It was common to go.

In recent years, one that uses a light emitter, a sensor, or the like directly connected to a flat cable is known as one that utilizes the flexibility of flat cable routing (for example, Patent Document 2). For light emitters and sensors, the optical axis and sensing direction must be positioned as accurately as possible and connected to a flat cable.
JP-A-8-148204 JP 2004-247281 A

  However, the conventional method for connecting an electronic component and a flat cable has the following problems. When connecting an electronic component directly to a flat cable using a connection terminal, the terminal is connected to the electronic component and the flat cable one by one, so that the position of another terminal is shifted while one terminal is connected. For this reason, it has been extremely difficult to accurately position a plurality of terminals and connect them to an electronic component and a flat cable.

  In particular, when a light emitter, a sensor, or the like is connected to a wiring body, it has been difficult to position with high accuracy for the reasons described above. In addition, there is a high risk of stressing electronic components due to misalignment of the connection position.

  Accordingly, the present invention has been made to solve these problems. An electronic component having two or more terminals is used, and the terminals are positioned and connected to a flat cable with high accuracy. It aims at providing the connection method with a cable.

A first aspect of the method for connecting an electronic component and a flat cable according to the present invention is a method for connecting an electronic component and a flat cable, in which an electronic component unit having two or more terminals provided on the electronic component is connected to the flat cable. In the electronic component unit, the two or more terminals are attached by caulking simultaneously to leads provided in the electronic component, and the two or more terminals are two or more crimp pieces arranged in a staggered manner. And the crimp piece is simultaneously inserted and fixed to the flat cable.

  In another aspect of the method for connecting an electronic component and a flat cable according to the present invention, the two or more terminals each include two or more crimp pieces, and at least one crimp piece is flat with respect to the other crimp pieces. It is bent in a substantially vertical direction at different distances from one end of the terminal base, and all the crimp pieces provided in the two or more terminals are simultaneously inserted and fixed to the flat cable.

  According to another aspect of the method for connecting an electronic component and a flat cable according to the present invention, the two or more terminals may be connected to the flat cable so that the arrangement direction of the crimp pieces substantially coincides with the longitudinal direction of the flat cable. It is connected.

  In another aspect of the method for connecting an electronic component and a flat cable according to the present invention, the two or more terminals are rotationally symmetric with respect to an axis parallel to a direction in which a crimp piece is inserted with the electronic component as a center. The crimp piece is provided.

  Another aspect of the method for connecting the electronic component and the flat cable according to the present invention is characterized in that after the crimp piece is simultaneously inserted into the flat cable, the crimp piece is curled and fixed to the flat cable. .

  According to another aspect of the method for connecting the electronic component and the flat cable of the present invention, an anvil having a terminal support wall for positioning the terminal is used, and the terminal is placed on the anvil and connected to the flat cable. It is characterized by.

  Another aspect of the method for connecting an electronic component and a flat cable according to the present invention is such that the crimp piece has a depth into which the crimp piece can be inserted, and a pierce groove formed so as to have a gap with a predetermined width from the inner wall of the crimp piece. The crimp piece is inserted into the flat cable by placing the terminal on the anvil and pressing the punch from above the flat cable.

  In another aspect of the method for connecting the electronic component and the flat cable according to the present invention, the inner surface of the crimp piece inserted into the flat cable is in contact with the flat conductor exposed by breaking the flat cable coating. It is curled so as to be rolled up.

  ADVANTAGE OF THE INVENTION According to this invention, the connection method of the electronic component and flat cable which use the electronic component in which two or more terminals were provided, position and connect this terminal to a flat cable with high precision can be provided. In the connection method of the present invention, since two or more terminals provided on the electronic component are simultaneously inserted into the flat cable and crimped, the relative position between the electronic component and the flat cable is maintained with high precision, and the electronic component is connected. A great effect is obtained that there is no risk of stressing the parts.

  A method for connecting an electronic component and a flat cable according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. In addition, about each structural part which has the same function, the same code | symbol is attached | subjected and shown for simplification of illustration and description.

  The method for connecting an electronic component and a flat cable according to the present invention is a method of accurately positioning and connecting two or more terminals to a flat cable using an electronic component unit in which two or more terminals are provided on the electronic component. . According to the method for connecting an electronic component and a flat cable of the present invention, since the electronic component and the terminal are connected with high accuracy in advance, the terminal and the flat cable are positioned and connected with high accuracy. It becomes possible to connect the electronic component and the flat cable while maintaining the relative positional relationship with high accuracy.

  Below, it demonstrates taking the case of LED shown in FIG. 3 as an electronic component. The LED 10 shown in FIG. 3 includes a circuit unit 12 having two leads 11 and a light emitting unit 13. Terminals 14 are attached in advance to the two leads 11 to form an electronic component unit in which the LED 10 and the terminal 14 which are electronic components are integrated.

  For light emitters such as LED10, the positioning of the optical axis is important. Therefore, when connecting LED10 and an electronic circuit, etc., the relative positional relationship between LED10 and the electronic circuit is maintained with high accuracy. There is a need to. For this purpose, the terminal 14 for connecting the LED 10 to an electronic circuit or the like must be attached while maintaining the relative positional relationship with the optical axis of the LED 10 with high accuracy. Further, not only the light emitter but also, for example, sensors, where high positional accuracy is required, it is necessary to position and attach the terminal to the sensor with high accuracy.

  The LED 10 and the terminal 14 shown in FIG. 3 are positioned and connected with high accuracy by a method such as caulking, and the optical axis of the LED 10 is adjusted by positioning and connecting the terminal 14 to the flat cable with high accuracy. It will be connected to the flat cable with a highly accurate positional relationship. Thus, in the connection method between the electronic component and the flat cable according to the present embodiment, the accuracy of the relative positional relationship between the optical axis of the LED 10 and the flat cable is only the accuracy of the connection position between the terminal 14 and the flat cable. Can be determined.

  In addition to the LED 10 having the configuration shown in FIG. 3, as an electronic component, the lead 11 of the LED 10 is directly processed so that the relative positional relationship between the optical axis of the LED 10 and the terminal 14 is maintained with high accuracy. 14 may be used.

  The connection method between the electronic component and the flat cable according to the embodiment of the present invention will be described with reference to the flowchart of the connection processing step shown in FIG. 1 and the schematic diagram (perspective view) showing the processing state of each step shown in FIG. This will be described below. Moreover, an example of the apparatus used for the connection method of this embodiment is shown in FIG. In the connection method of the present embodiment, an apparatus including the upper mold 30 and the lower mold 40 as shown in FIG. 4 can be used. The flat cable 20 is disposed between the upper mold 30 and the lower mold 40 and the LED 10 Connect with.

  The upper die 30 is provided with a stripper 31 and an upper punch 32, and the lower die 40 is provided with a lower punch 41. The upper punch 32 is formed with a piercing groove 33 into which the crimp piece 15 can be inserted so that the crimp piece 15 of the terminal 14 can be inserted into the flat cable 20. Further, as shown in FIG. 5, an anvil 42 (42 a, 42 b) having terminal support walls 43 (43 a, 43 b) for positioning the terminal 14 is formed in the lower punch 41.

  In this embodiment, in order to position the terminals 14a and 14b, terminal support walls 43a and 43b are respectively formed on the anvils 42a and 42b on which the terminals 14a and 14b are placed. By using the anvil 42 formed in this way, the terminal 14 can be connected to the flat cable 20 at a highly accurate relative position.

  In the flowchart of the connection process shown in FIG. 1, first, in step S <b> 1 that is an initial process of the connection process, the LED 10 to which the terminal 14 is attached is placed at a predetermined position of the lower punch 41. At this time, as shown in FIG. 5, the terminal 14 is positioned with high accuracy by the terminal support wall 43 of the anvil 42. The flat cable 20 is disposed with a predetermined gap (for example, 0.7 mm) from the strippers 31a and 31b. The processing state of the LED 10 and the flat cable 20 in step S1 is shown in FIG.

  In step S2, the upper punch 32 is lowered from above between the strippers 31a and 31b. At this time, the position of the upper punch 32 is controlled so that the gap between the flat cable 20 and the upper punch 32 is, for example, 0.2 mm or less. The processing state of the LED 10 and the flat cable 20 in step S2 is shown in FIG.

  In step S <b> 3, the lower mold 40 is raised and the flat cable 20 is clamped between the upper mold 30 and the lower mold 40. The flat cable 20 is lifted by, for example, 0.7 mm so as to close the gap formed between the flat cable 20 and the stripper 31 in step S1. The processing state of the LED 10 and the flat cable 20 in step S3 is shown in FIG.

  In step S4, the lower punch 41 is raised by, for example, 4 mm, and thereby the crimp piece 15 of the terminal 14 is pierced into the flat cable 20. The processing state of the LED 10 and the flat cable 20 in step S4 is shown in FIG. Moreover, the state of the flat cable 20 in which the crimp piece 15 was stabbed is schematically shown in FIG. By raising the lower punch 41, the crimp piece 15 is inserted into the piercing groove 33 after piercing the flat cable 20.

  The positional relationship between each crimp piece 15 of each terminal 14 provided on the lead 11 of the LED 10 and each pierce groove 33 is such that the gap 34a between the outer wall of the crimp piece 15 and the wall of the pierce groove 33 is narrow, and the crimp piece 15 It arrange | positions so that the clearance gap 34b between an inner wall and the wall of the piercing groove | channel 33 may become large. When the positional relationship between the crimp piece 15 and the piercing groove 33 is set in this way, when the crimp piece 15 is inserted into the flat cable 20, the flat cable 20 around the crimp piece 15 is in a state as shown in FIG. . That is, on the inner wall side of the crimp piece 15, the flat cable 20 is cut after the coating is stretched and the inner flat conductor 21 is exposed greatly, and the contact area between the inner wall of the crimp piece 15 and the flat conductor 21 is large. It has become.

  In step S <b> 5, the upper punch 32 is raised to a position where the crimp piece 15 is pulled out from the piercing groove 33. Here, the rising distance of the upper punch 32 is, for example, 7 mm. The processing state of the LED 10 and the flat cable 20 in step S5 is shown in FIG. Even if the crimp piece 15 is pulled out from the piercing groove 33, the flat cable 20 and the crimp piece 15 are maintained in a state as shown in FIG.

  In step S6, the upper punch 32 in which the pierce groove 33 is formed is replaced with the upper punch 32a in which the curl groove 35 is formed. The processing state of the LED 10 and the flat cable 20 in step S6 is shown in FIG. Also in step S6, the flat cable 20 and the crimp piece 15 are maintained in the state shown in FIG.

  In step S7, the upper punch 32a is lowered by the distance of 7 mm obtained by raising the upper punch 32 in step S5. As a result, the upper punch 32a is lowered to a position in contact with the flat cable 20, and the crimp piece 15 is bent inward by the curl groove 35, and the flat cable 20 is pressed and fixed. The processing state of the LED 10 and the flat cable 20 in step S7 is shown in FIG. FIG. 6B shows a state where the crimp piece 15 is bent inward.

  The connection state between the crimp piece 15 and the flat cable 20 formed up to step S7 will be described in more detail with reference to FIG. In the gap 34a where the space between the wall of the pierce groove 33 and the crimp piece 16 is narrow, the flat conductor 21 is cut with little extension due to the piercing of the crimp piece 15 (FIG. 6A). On the other hand, in the gap 34b where the space between the wall of the pierce groove 33 and the crimp piece 15 is wide, the flat cable 20 is cut while being stretched by the piercing of the crimp piece 15 (FIG. 6A). Further, the flat conductor 21 exposed from under the cut coating is wound inside by the arcuate bending of the crimp piece 15, and the crimp piece 15 is overlapped and crimped. They will be connected (FIG. 6B).

  In step S8, the lower punch 41 is lowered again by the distance of 4 mm raised in step S4. At this time, since the LED 10 is connected to the flat cable 20 at the terminal 14, the LED 10 is separated from the lower punch 41 and held by the flat cable 20. The processing state of the LED 10 and the flat cable 20 in step S8 is shown in FIG.

  In step S9, the upper punch 32a is raised by the same distance of 7 mm as in step S5. As a result, the crimp piece 15 of the terminal 14 is released from the curled groove 35 formed in the upper punch 32a. The processing state of the LED 10 and the flat cable 20 in step S9 is shown in FIG.

  In step S10, the lower mold 40 is lowered by a predetermined distance (for example, 9 mm). As a result, the entire LED 10 including the light emitting unit 13 is released from the lower mold 40. The processing state of the LED 10 and the flat cable 20 in step S10 is shown in FIG.

  In step S11, the upper mold 30 is raised by a predetermined distance (for example, 50 mm). As a result, a process of connecting the LED 10 to the flat cable 20 is completed. The processing state of the LED 10 and the flat cable 20 in step S11 is shown in FIG. Subsequently, when another LED 10 is connected to the flat cable 20, for example, after the flat cable 20 is moved by a predetermined distance, the process is started again from step S1.

  In the above description, the LED 10 can be connected to the flat cable 20 using only the upper punch 32a in which the curl groove 35 is formed as the upper punch of the upper mold 30. In this case, the upper punch 32a is lowered from above in step S2, and then the processing corresponding to step S6 is executed, the lower die 40 is raised, and the flat cable 20 is moved between the upper die 30 and the lower die 40. The process corresponding to step S7 is executed while clamping, and the processes after step S8 are executed.

  When the upper punch 32 formed with the piercing groove 33 and the upper punch 32a formed with the curled groove 35 are used in combination as the upper punch of the upper mold 30, a contact surface between the crimp piece 15 and the flat conductor 21 is possible. It can be made as large as possible, and is suitable when importance is attached to connection performance. On the other hand, when only the upper punch 32a in which the curled groove 35 is formed is used, the processing steps can be simplified while connecting the contact surfaces of the crimp pieces 15 and the flat conductor 21 in a practical state. It is suitable when it is desired to reduce the cost in the manufacturing process.

  As described above, in the method of connecting the electronic component and the flat cable according to the present invention, the electronic component and the two or more terminals are connected to each other at a highly accurate relative position, and the two or more terminals are integrated. By connecting the terminals to the flat cable at the same time, the electronic component can be connected to the flat cable while maintaining a highly accurate relative position.

  In particular, when the electronic component unit is formed by processing the process according to the connection method of the present invention following the process of forming the electronic component unit by crimping and connecting two or more terminals to the electronic component. It becomes possible to perform the connection with the flat cable while maintaining the molding accuracy as it is. As a result, the accuracy of the relative position between the electronic component and the flat cable depends only on the positioning accuracy of the flat cable.

  In this way, it is possible to connect the electronic component and the flat cable with high precision only by increasing the positioning accuracy of the flat cable, and simultaneously inserting and crimping two or more terminals into the flat cable, The insertion position does not shift and there is no risk of stressing the electronic components. As a result, even when a margin is provided in consideration of misalignment, it is possible to reduce the margin as much as possible, increase the density and cost of electronic components, and further reduce the tact time. Is obtained.

  According to the method for connecting an electronic component and a flat cable of the present invention, not only a light emitting body such as an LED having an optical axis, but also an electronic component that is required to set an installation position and directivity of a sensor or the like with particularly high accuracy The flat cable can be positioned and connected with high accuracy without impairing the flexibility of the wiring of the flat cable.

  Another embodiment of the method for connecting an electronic component and a flat cable according to the present invention will be described below with reference to the drawings. In this embodiment, the terminal attached to the electronic component has a shape different from that used in the above-described embodiment. In this embodiment, the LED 10 is used as an example of an electronic component, and a terminal (hereinafter referred to as a modified pierce terminal) 101 as shown in FIG. 7 is attached to the lead 11 of the LED 10 to form the electronic component unit 100. A method of connecting such an electronic component unit 100 to a flat cable will be described.

  The modified pierced terminal 101 has three crimp pieces 103-1 to 103-3 bent vertically from one end of the terminal base 102. The three crimp pieces 103-1 to 103-3 are formed so as to be alternately arranged in a staggered manner without being arranged on a straight line. In the modified pierce terminal 101, the two crimp pieces 103-1 and 3 at both ends are bent vertically at a position farther from the terminal base 102 than the crimp piece 103-2 located at the center. The staggered arrangement is not limited to this, and is formed by providing one or more crimp pieces that are bent at different distances from the terminal base among two or more crimp pieces.

  The modified pierced terminal 101 has a structure in which the crimp piece 103 is provided only on one side (one end) of the terminal base portion 102, and thus is particularly suitable for mounting the LED 10 on a flat cable having a narrow conductor width. FIGS. 8A and 8B respectively show an example of using the above-described terminal 14 and an example of using the modified pierce terminal 101 to connect the LED 10 to the flat cable.

  In FIG. 8A, each of the terminals 14a and 14b includes two sets of crimp pieces 15 on the left and right sides, one terminal 14a is connected to one flat conductor 21a, and the other terminal 14b is connected to the other flat conductor 21b. It is connected. As shown in the figure, when the terminals 14 (14a, 14b) are used, the flat conductors 21a, 21b have a width larger than the width of the terminals 14a, 14b (width W1 in FIG. 8A). Need to be. Moreover, even if the flat conductor has a width larger than the width of the terminal, the closer the width is, the easier the flat conductor breaks, starting from the portion where the flat conductor is cut by the crimp piece. .

  On the other hand, in FIG. 8B using the modified pierced terminal 101, the modified pierced terminals 101a and 101b are each provided with a pair of crimp pieces 103-1 to 103-3, and one modified pierced terminal 101a is one The other deformed piercing terminal 101b is connected to the other flat conductor 111b. The arrangement direction of each set of crimp pieces 103-1 to 103-3 is directed and connected so as to coincide with the longitudinal direction of the flat cable 110. Therefore, the flat conductor 111 of the flat cable 110 should just have a width | variety larger than the arrangement width (width W2 of FIG.8 (b)) of the crimp pieces 103-1 to 103-3. Further, when the arrangement direction of the crimp pieces coincides with the longitudinal direction of the flat cable 110, the flat conductor is less likely to break, with the portion where the flat conductor is cut by the crimp pieces as a base point. That is, the connection strength is improved. Thus, the modified pierced terminal 101 is a terminal suitable for mounting the LED 10 on a flat cable having a narrow flat conductor width.

  Since the modified pierced terminal 101 used in the present embodiment is provided with the crimp piece 103 only on one side of the terminal base 102, it is necessary to fix the modified pierced terminal 101 to the flat conductor 111 with only the crimp piece 103 on one side. Therefore, in order to allow a firm connection to the flat conductor 111 with only one crimp piece 103, the three crimp pieces 103-1 to 103-3 are formed in a staggered arrangement. By adopting the staggered arrangement, the insertion positions when the crimp pieces 103-1 to 103-3 are inserted into the flat cable 110 can be prevented from being aligned on a straight line. By fixing the deformed piercing terminal 101 to the flat cable 110 at three points that are not on a straight line, the plane of the terminal base 102 and the plane of the flat cable 110 are firmly fixed.

  Further, when the LED 10, the two leads, and the two deformed pierce terminals 101 are viewed as a whole, the flat cable 110 is formed so that the LED 10 is centered on the LED and is rotationally symmetric with respect to an axis parallel to the insertion direction of the crimp piece. The connection part to is symmetrically arranged, and a stable connection that is hardly affected by external force can be realized.

  The two deformed pierce terminals 101 are fixed to the lead 11 so that the respective crimp pieces 103-1 to 103-3 are in a rotationally symmetric position around the LED 10 with respect to an axis parallel to the direction in which the crimp pieces are inserted. It is good to do. Thereby, LED10 can be fixed to the flat cable 110 stably.

  The connection method of the present embodiment for connecting the LED 10 having the modified pierce terminal 101 to the flat cable 110 is performed according to the flow of the connection processing step shown in FIG. 1 as in the above-described embodiment. However, in steps S2 to S5, an upper punch 120 as shown in FIG. In the upper punch 32 shown in FIG. 4, the pierce grooves 33 are formed on the left and right sides of the upper punch 32 so as to correspond to the terminals 14 on which the crimp pieces 15 are aligned.

  On the other hand, the upper punch 120 used in the present embodiment has two piercing grooves 121 and 122 formed on the left and right sides of the upper punch 120, corresponding to the arrangement of the crimp pieces 103-1 to 103-3 arranged in a staggered manner. Yes. The piercing groove 121 is provided at a position facing the crimp pieces 103-1 and 3, and the piercing groove 122 is provided at a position facing the crimp pieces 103-2.

  Further, since the arrangement direction of the crimp pieces 103-1 to 103-3 of each modified pierce terminal 101 is substantially coincident with the longitudinal direction of the flat cable 110 as shown in FIG. 10, the upper punch 120 shown in FIG. It is sectional drawing of the upper punch 120 seen from the longitudinal direction of the flat cable 110. FIG. By using such an upper punch 120, all the crimp pieces 103-1 to 103-3 of the two deformed piercing terminals 101 can be simultaneously inserted into the flat cable and connected. Further, as shown in FIG. 12, each of the crimp pieces 103-1 to 103-3 is electrically contacted with the flat conductor 111 at a large contact surface and fixed.

In FIG. 12, the crimp piece 103-1 and the crimp piece 103-3 are cut after the coating of the flat cable 110 is stretched with the surface on the side facing the crimp year 103-2 as the inside, and the inner flat conductor 111 is formed. The contact area between the inner wall of the crimp pieces 103-1 and 103-3 and the flat conductor 111 is increased.
Similarly, in the crimp year 103-2, the surface of the side facing the crimp piece 103-1 and the crimp piece 103-3 is taken as the inside, and the flat cable 110 is cut after the covering of the flat cable 110 is stretched to make the inner flat conductor 111 larger. It is in an exposed state, and the contact area between the inner wall of the crimp piece 103-2 and the flat conductor 111 is large.
Further, as in FIG. 6, the flat conductor exposed from under the cut coating is wound inside by the arcuate bending of the crimp pieces, and crimped so that the crimp pieces are overlapped. Therefore, it is electrically connected with a large contact surface.

  An example of a state in which the crimp pieces 103-1 to 103-3 of the modified pierce terminal 101 are inserted into the flat cable 110 is shown in the perspective view of FIG. FIG. 11A is a perspective view of a state in which the crimp pieces 103-1 to 103-3 of the modified piercing terminal 101 are inserted into the flat cable 110, as viewed from the surface opposite to the surface to which the LED 10 is connected. (A) is the perspective view seen from the surface where LED10 was connected.

  In step S6 and subsequent steps, instead of the upper punch 32a in which the curl groove 35 is formed, in this embodiment, the upper punch in which the curl groove is formed in a position facing each of the crimp pieces 103-1 to 103-3 is used. It is good. By using such an upper punch, each of the crimp pieces 103-1 to 103-3 can be curled so as to firmly press the flat conductor.

  As the flat cable 110, a straight cable may be used as it is, but it is also possible to use a flat cable in which folds are formed in a bellows shape in advance. An example of such a flat cable is shown in FIG. The flat cable 130 shown in FIG. 13 has a plurality of bellows portions 131 in which folds are formed in a bellows shape in advance. The flat cable 130 is connected to the electronic component of the present embodiment and the flat cable. A plurality of LEDs 10 can be connected using the method.

  The bellows portion 131 is formed by providing a plurality of small folds as shown in FIG. 14, for example. Thus, by providing a plurality of folds having a small width, the flat cable 130 can be smoothly moved through the gap between the upper mold 30 and the lower mold 40 as shown in FIG.

  The modified pierced terminal 101 used in the method for connecting the electronic component and the flat cable of the present embodiment has the three crimp pieces 103, but is not limited thereto, and has at least two crimp pieces. Just do it. At least one crimp piece may be bent in the vertical direction at a distance from one end of the terminal base that is different from another crimp piece. By using such a modified pierced terminal 101, an electronic component such as the LED 10 can be connected to a flat cable having a narrow flat conductor.

  In addition, the description in this Embodiment shows an example of the connection method of the electronic component which concerns on this invention, and a flat cable, and is not limited to this. The detailed configuration and detailed operation of the connection method between the electronic component and the flat cable in the present embodiment can be changed as appropriate without departing from the spirit of the present invention.

It is a flowchart for demonstrating the connection method of the electronic component and flat cable which concern on embodiment of this invention. It is a schematic diagram which shows the connection process of the electronic component which concerns on embodiment of this invention, and a flat cable. It is a perspective view of LED which is one Example of an electronic component. It is a fragmentary sectional view which shows an example of the apparatus used for the connection method of the electronic component which concerns on embodiment of this invention, and a flat cable. It is a perspective view of an anvil provided with a terminal support wall for positioning a terminal. It is a schematic diagram which shows the state of the flat cable by which the crimp piece was stabbed. It is a perspective view which shows the deformation | transformation piercing terminal used in another embodiment of this invention. It is a top view which shows an example which connected LED to the flat cable using the terminal. It is sectional drawing which shows the upper punch used in another embodiment of this invention. It is a perspective view which shows the relationship between the arrangement direction of the crimp piece of a deformation | transformation earring terminal, and a flat cable. It is a perspective view which shows an example of the state by which the crimp piece of the deformation | transformation earring terminal was inserted in the flat cable. It is a schematic diagram which shows the state by which the crimp piece is electrically contacting with the flat conductor at the big contact surface. It is a perspective view which shows an example of the flat cable by which the crease | fold was formed previously in the shape of a bellows. It is a perspective view which shows an example of a bellows part.

Explanation of symbols

10 LED
11 Lead 12 Circuit part 13 Light emitting part 14 Terminal 15 Crimp piece 20 Flat cable 21 Flat conductor 30 Upper mold 31 Stripper 32, 32a Upper punch 33 Pierce groove 34 Gap 35 Curled groove 40 Lower mold 41 Lower punch 100 Electronic component unit 101 Deformed piercing Terminal 102 Terminal base 103 Crimp piece 110, 130 Flat cable 111 Flat conductor 120 Upper punch 121, 122 Pierce groove 131 Bellows

Claims (7)

A connecting method between an electronic component and a flat cable for connecting an electronic component unit in which two or more terminals are provided to the electronic component to a flat cable,
In the electronic component unit, the two or more terminals are attached by crimping simultaneously to each of two or more leads provided in the electronic component,
The two or more terminals have a terminal base, and two or more crimp pieces arranged in a staggered manner are provided on one side of the terminal base, and the two or more terminals are connected to the respective crimp pieces. A connection method between an electronic component and a flat cable , wherein the flat cable is connected to the flat cable so that an arrangement direction of the flat cable and the flat cable substantially coincide with each other . Each of the two or more terminals includes two or more crimp pieces, and at least one crimp piece is bent in a substantially vertical direction at a different distance from one end of the planar terminal base with respect to the other crimp pieces. ,
The method for connecting an electronic component and a flat cable according to claim 1, wherein all the crimp pieces provided in the two or more terminals are simultaneously inserted and fixed in the flat cable. 3. The crimping piece according to claim 2, wherein the two or more terminals include the crimping piece at a rotationally symmetric position with respect to an axis parallel to a direction in which the crimping piece is inserted with the electronic component as a center . Connection method between electronic components and flat cable. The electronic component according to any one of claims 1 to 3, wherein the crimp piece is fixed to the flat cable by curling the crimp piece after the crimp piece is simultaneously inserted into the flat cable. Connection method with flat cable. Using an anvil with a terminal support wall for positioning the terminal,
5. The method for connecting an electronic component and a flat cable according to claim 1, wherein the terminal is placed on the anvil and connected to the flat cable. Using a punch having a depth at which the crimp piece can be inserted, and a pierce groove formed so as to have a gap of a predetermined width with an inner wall of the crimp piece,
The electronic component and the flat cable according to claim 5, wherein the terminal is placed on the anvil, and the crimp piece is inserted into the flat cable by pressing the punch from above the flat cable. Connection method. The inner surface of the crimp piece inserted into the flat cable is curled so as to come into contact with a flat conductor exposed by breaking the flat cable coating. The connection method of the electronic component as described in any one of these, and a flat cable.

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