TW201330394A - Connector - Google Patents

Abstract

The connector of the present invention includes: a housing (3), which accommodates a conductive connector head (5); an insertion port (4), which is provided at the front side of the housing (3), and is formed by partitioning the housing into a lower wall (32), an upper wall (33) and side walls (34), and allows the insertion of a flat cable (2); a lever (6), which is arranged at the rear side of the housing (3) for pressing the joint (5) against the flat cable (2) through a rotational operation, so as to conductively connect them to each other; and a protective member (100) for protecting the side wall (34) of the insertion port (4).

Description

Connector

The present invention relates to connectors.

As a conventional connector, for example, as shown in Japanese Patent No. 4651500, the lever is provided on the front side (insertion side) of the casing, and the lock type connector is shown in Japanese Laid-Open Patent Publication No. 2010-244987. Locking connectors and the like are known from the rear side of the body.

A conductive joint is housed in the housing. The joint has one pair of arms disposed on the upper and lower sides of the flat cable, and a flat cable is inserted between the pair of arms. When the lever is operated in this state, the pair of arm portions are centered on the fulcrum portion provided between the both arm portions, and the front end side sandwiches the upper and lower surfaces of the flat cable.

At this time, in the front lock type connector, the rotational force of the lever acts on the front end side than the fulcrum portion of the arm portion, and in the rear lock type connector, the rotational force of the lever is higher than the fulcrum portion of the arm portion. Acts on the back end side. That is, in the front lock type connector, the flat cable is grasped by causing the rotational force of the lever to act in the direction of directly closing the front end side of the connector. Further, in the rear lock type connector, the flat cable is gripped at the closed front end side by the pivoting force of the lever acting in the direction of opening the rear side than the fulcrum portion of the connector.

Thus, in the front locking type connector and the rear locking type connector, the position at which the rotational force of the lever acts on the joint is different from the front side and the rear side of the fulcrum. However, in the rear lock type connector, since the storage space of the lever in the locked state can be secured behind the joint, the connector can be made shorter than the front lock type.

In recent years, there has been a tendency to promote multipolarization and miniaturization of connectors. In particular, in the rear lock type connector, it is easy to cause oblique insertion of the flat cable due to multi-polarization, miniaturization (short-back), and the like. As described above, when the flat cable is inserted obliquely, there is a problem that the side wall of the insertion port is damaged by cutting or the like.

Therefore, an object of the present invention is to obtain a connector capable of suppressing damage to an insertion port even when a flat cable is obliquely inserted.

In order to achieve the above object, a first aspect of the present invention includes a housing that houses a conductive joint, and an insertion port that is provided on a front side of the housing and that has a lower wall and an upper portion of the housing. The wall and the side wall are partitioned and can be inserted into the flat cable; the lever is disposed on the rear side of the casing, and the joint is crimped to the flat cable by a rotating operation to be electrically connected to each other; And a protective member for protecting the side wall of the aforementioned insertion opening.

According to a second aspect of the invention, the protection member includes: a protection portion for protecting a front surface of the side wall of the insertion opening; and a cable holding portion extending from the protection portion to a deep side of the insertion opening, The flat cable is attached with a certain pressing force.

According to a third aspect of the invention, the protective member is made of a metal material having excellent wear resistance.

According to a fourth aspect of the present invention, a gap is provided between the protective member and a front surface of the side wall of the insertion opening.

According to a fifth aspect of the invention, the protective member is integrally formed in the casing.

According to a sixth aspect of the invention, the protective member is formed in a U shape to cover a front surface of the side wall of the insertion opening.

According to a seventh aspect of the invention, the surface of the protective member is plated.

According to an eighth aspect of the invention, the protective member is provided on both side walls of the insertion port, and the pair of protection members are disposed to be bilaterally symmetrical.

According to a ninth aspect of the invention, the protective member is integrally formed with an upper wall of the casing.

According to a tenth aspect of the invention, the protective member is made of a material having excellent elasticity.

According to an eleventh aspect of the present invention, in the surface of the protective member, a friction increasing treatment for increasing the flat cable is performed.

According to the present invention, a so-called rear lock type connector which is provided as a lever on the rear side of the casing can be fixedly inserted by the rotation operation of the lever. A flat cable that is inserted into the port. In this case, since the protective member for protecting the side wall of the insertion opening is provided, even when the flat cable is inserted obliquely, the front end corner portion of the flat cable can be inserted while being in contact with the protective member, so that insertion can be suppressed. The mouth is damaged.

C‧‧‧ circuit board

1‧‧‧Connector

2‧‧‧flat cable

2C‧‧‧ front corner

3‧‧‧Shell

4‧‧‧ insertion port

5‧‧‧Connectors

6‧‧‧Leverage

6a‧‧‧One end

6b‧‧‧Other end

31‧‧‧Ditch

32‧‧‧The lower wall

33‧‧‧Upper wall

33a‧‧‧下下

34‧‧‧ side wall

34a‧‧‧ front

34b‧‧‧ mounting holes

34c‧‧‧ditch

51‧‧‧Fixed side arm

51a‧‧‧Fixed side contact

51b‧‧‧Terminal Department

51c‧‧‧ back end

51d‧‧‧ front end

52‧‧‧ movable side arm

52a‧‧‧ movable side contact

52b‧‧‧Spring Department

52c‧‧‧ back end

52d‧‧‧ front end

53‧‧‧Connected springs

61‧‧‧Cam Department

62‧‧‧Operation Department

100~100D‧‧‧protective components

101‧‧‧Protection Department

101a‧‧‧ front end

102‧‧‧Installation Department

102a‧‧‧Snap convex

102b‧‧‧ grain

103‧‧‧ Cable Maintenance Department

103a‧‧‧ front end

103b‧‧‧ Uplift

Fig. 1 is a side view showing a connector according to an embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

Fig. 3 is a perspective view showing the mounted state of the protective member shown in Fig. 2.

Figure 4 is an enlarged perspective view of the protective member shown in Figure 3.

Fig. 5 is a cross-sectional view showing a state in which a flat cable is obliquely inserted into a casing of the connector shown in Fig. 2.

Figure 6 is a cross-sectional view showing the unlocked state of the lever along the line B-B of Figure 2 .

Figure 7 is a cross-sectional view corresponding to Figure 6 showing the locked state of the lever.

Fig. 8 is an enlarged perspective view showing a first modification of the protective member shown in Fig. 2;

Fig. 9 is an enlarged perspective view showing a second modification of the protective member shown in Fig. 2;

Fig. 10 is an enlarged perspective view showing a third modification of the protective member shown in Fig. 2;

Fig. 11 is an enlarged perspective view showing a fourth modification of the protective member shown in Fig. 2;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 7 are views showing an embodiment of the connector 1 of the present invention, and the connector 1 is connected to a flat cable 2 such as an FPC (Flexible Printed Substrate) or an FFC (Flexible Flat Cable). On the circuit board C (see Fig. 6).

As shown in FIGS. 1 and 2, the connector 1 has an insulating case 3, and an insertion port 4 is provided on the front side (lower side in FIG. 2) of the case 3, so that the flat cable 2 can be inserted. Further, in the casing 3, a plurality of conductive joints 5 which are freely connected to the flat cable 2 inserted from the insertion port 4 are housed in a state of being aligned in the lateral direction.

Further, on the rear side (upper in FIG. 2) of the casing 3, a lever 6 is attached, and the joint 5 is pressed against the flat cable 2 by a turning operation to be electrically connected to each other.

The case 3 is formed of an insulating material such as synthetic resin, and the groove portion 31 to which the joint 5 is attached is inserted in the front-rear direction (the vertical direction in FIG. 2) of the casing 3 and is provided in the horizontal direction (FIG. 2). In the left and right direction). Further, by attaching one joint 5 to each of the respective groove portions 31, the plurality of joints 5 are arranged in a horizontally aligned state.

The insertion port 4 is formed in a flat rectangular shape in which the lower wall 32, the upper wall 33, and the side walls 34 of the casing 3 are laterally enlarged as shown in FIG. Needless to say, the opening area of the insertion port 4 is equivalent to the thickness and the horizontal width of the flat cable 2.

As shown in FIG. 6, the joint 5 is formed by punching a plate-shaped conductive material having a predetermined thickness, for example, by press or the like. The joint 5 thus formed is provided with a rod-shaped fixed side arm portion 51 extending in the front-rear direction (vertical direction in FIG. 2); and extending in the same direction as the fixed side arm portion 51, in the flat cable 2 The rod-shaped movable side arm portion 52 that faces the fixed side arm portion 51 in the thickness direction. Further, the fixed side arm portions 51 and the movable side arm portions 52 are connected to each other in the longitudinal direction by the connection spring portion 53, so that the entire portion is formed in a substantially H-shape. At this time, the connection spring portion 53 serves as a fulcrum when the movable side arm portion 52 is opened and closed. Further, a terminal portion 51b attached to the circuit board C is provided on the rear end side of the fixed side arm portion 51, whereby the terminal portion 5 and the circuit board C are electrically connected to each other by the terminal portion 51b. Further, the rear end side of the movable side arm portion 52 is a spring portion 52b.

The lever 6 is integrally molded by injection molding or the like of an insulating material such as synthetic resin, and a cam portion 61 is provided at one end portion 6a (downward in FIG. 6), and the fixed side contact portion 51a of the joint 5 is in contact with the movable side. The pressing force in the closing direction is given between the portions 52a. Further, at the other end portion 6b (upper in Fig. 6), an operation portion 62 for rotating the operation lever 6 is provided.

Further, the lever 6 is disposed on the rear end side of the joint 5 on which the terminal portion 51b, the spring portion 52b, and the like are provided, and the cam portion 61 is located between the rear end portions 51c of the fixed side arm portion 51 and the movable side arm portion 52. 52c. At this time, the lever 6 is formed with an opening 63 for inserting the rear end portion 52c of the movable side arm portion 52. In this manner, the rear lock type connector 1 is configured by arranging the lever 6 at the rear end portion of the joint 5, that is, the rear end portion of the casing 3.

The lever 6 is raised in the initial state shown in FIG. 6 and becomes non-locking. state. Further, when the flat cable 2 is inserted into the insertion port 4, as shown in Fig. 7, the lever 6 is rotated backward as indicated by the arrow a to be tilted, thereby being in a locked state, in which the plate is in the locked state. The cable 2 and the connector 5 are electrically connected. That is, the operation portion 62 of the lever 6 is tilted backward to be tilted, so that the cam portion 61 acts to push the fixed side arm portion 51 of the joint 5 and the rear end portions 51c and 52c of the movable side arm portion 52 apart. Then, the fixed side arm portion 51 and the movable side arm portion 52 actuate the respective distal end portions 51d and 52d in the closing direction with the connection spring portion 53 as a fulcrum. By this, the fixed side contact portion 51a and the movable side contact portion 52a provided at the distal end portions 51d and 52d of the fixed side arm portion 51 and the movable side arm portion 52 can strongly sandwich both surfaces of the flat cable 2. By this clamping, the joint 5 can be electrically connected to the flat cable 2, and the flat cable 2 can be prevented from being detached.

In this way, in the case where the rear lock type connector 1 is in the locked state, since the lever 6 does not overlap the joint 5 and can be disposed behind the joint 5, compared to the front lock type connector, Can promote short stature.

Here, in the present embodiment, as shown in FIGS. 2 and 3, the protective member 100 for protecting the both side walls 34 of the insertion opening 4 is provided in the insertion opening 4 into which the flat cable 2 is inserted.

As shown in FIG. 4, the protective member 100 has a linear mounting portion 102, and the front end portion of the mounting portion 102 is folded back into a U shape, and the U-shaped portion is bent to form a protective portion of the front surface 34a of the protective side wall 34. 101. The protection unit 101 is formed by integrally processing a part (front end portion) of the attachment portion 102. At this time, the protective member 100 has excellent resistance throughout the system. Abrading metal materials such as phosphor bronze, brass, titanium copper, beryllium copper, stainless steel, etc. are preferably formed.

Further, as shown in FIG. 2, a predetermined thickness t remains in the walls of the both side walls 34 to form a mounting hole 34b into which the mounting portion 102 of the protective member 100 is inserted. Moreover, the protective portion 101 of the U-shaped protective member 100 covers the front surface (front end surface) 34a of the side wall 34 by inserting the mounting portion 102 into the mounting hole 34b.

Further, a locking convex portion 102a that engages with an engaging concave portion (not shown) provided in the mounting hole 34b is provided at a lower central portion of the mounting portion 102, whereby the locking convex portion 102a is engaged with the card The recess is closed so that the mounting portion 102 is fixed (to prevent falling off).

In the protective member 100, the distal end portion of the protective portion 101 is extended to the deep side of the insertion port 4, and the cable holding portion 103 that gives a constant pressing force to both sides of the flat cable 2 is provided. As described above, the protective member 100 includes the protective portion 101, the mounting portion 102, and the cable holding portion 103, and is formed in a hook shape as a whole.

Further, the protective member 100 is provided with the cable holding portion 103, and a groove portion 34c serving as a housing space of the cable holding portion 103 is formed inside the both side walls 34 of the insertion opening 4, and has a depth d. The depth d of the groove portion 34c is equal to or larger than the thickness of the cable holding portion 103.

The cable holding portion 103 of the present embodiment is extended from the front end of the protective portion 101 to the deep side of the insertion port 4 along the side wall 34, and the extended distal end portion 103a is slightly toward the central portion of the insertion opening 4 in the width direction. Flexion. Therefore, the front end portion 103a of the cable holding portion 103 is in a state of being protruded from the inner side of the side wall 34 toward the insertion port 4 in a natural state. At this time, the cable holding portion 103 is biased by the elastic force of the protective portion 101 bent in a U shape, and is pressed against the side surface of the flat cable 2 that has been inserted.

In addition, in FIG. 2, in order to show the natural state of the cable holding part 103, the front end part 103a of the cable holding part 103 is the form which protrudes toward the inner side of the side surface of the flat cable 2. However, in the actual state in which the flat cable 2 is inserted into the insertion port 4, the front end portion 103a of the cable holding portion 103 is pressed outwardly from the side surface of the flat cable 2 so as to be pressed outward.

Further, as shown in FIG. 2, the protective member 100 is attached to the side wall 34, and a predetermined gap δ is provided between the protective portion 101 of the protective member 100 and the front surface 34a of the both side walls 34.

Further, electroplating is performed on the surface of the protective member 100 of the present embodiment. Further, the protective members 100 are respectively attached to the both side walls 34 of the insertion port 4, and the pair of protective members 100 are disposed to be bilaterally symmetrical.

As described above, in the connector 1 of the present embodiment, the terminal portion 51b of the joint 5 is attached to the circuit board C. Further, when the flat cable 2 is inserted into the insertion port 4 of the connector 1 and the lever 6 is locked, the flat cable 2 and the joint 5 are electrically connected. Therefore, the lever 6 is locked by inserting the flat cable 2 into the insertion port 4, and the flat cable 2 and the circuit board C are electrically connected via the joint 5.

As described above, according to the connector 1 of the present embodiment, The lock connector 1 is easily promoted after the low-profile, and the flat cable 2 inserted into the insertion port 4 can be fixed by the rotation operation of the lever 6. At this time, the insertion member 4 is provided with a protective member 100 for protecting the side wall 34 of the insertion port 4. Therefore, the front end corner portion 2C of the flat cable 2 to be inserted into the insertion port 4 is inserted in contact with the protective member 100.

Therefore, as shown in FIG. 5, when the flat cable 2 is inserted obliquely, the other front end corner 2C1 is inserted first, and the other front end corner 2C2 is inserted slowly, but even in this case, It is also possible to surely suppress the damage of the side wall 34. That is, since the distal end corner portion 2C2 is inserted while being in contact with the protective portion 101 of the protective member 100 that protects the side wall 34, the side wall 34 is protected by the protective portion 101 and is not cut.

Further, according to the present embodiment, since the protective member 100 is provided with the cable holding portion 103 in addition to the protective portion 101, when the flat cable 2 is inserted into the insertion port 4, the cable holding portion 103 can be used by the cable holding portion 103. A certain spring force is applied to press the flat cable 2. Thereby, the flat cable 2 inserted into the insertion port 4 can be stably held by the pressing force of the cable holding portion 103, and the flat cable 2 can be prevented from being easily detached from the connector 1.

Further, according to the present embodiment, the protective member 100 is formed of a metal material having excellent wear resistance. Therefore, even when the flat cable 2 is repeatedly inserted and removed into the insertion port 4, the protective member 100 (protection portion 101) can suppress the occurrence of a problem that it is easily cut by the front end corner portion 2C of the flat cable 2.

Further, according to the present embodiment, a predetermined gap δ is provided between the protective portion 101 of the protective member 100 and the front surface 34a of the side wall 34 of the insertion port 4. Therefore, by the gap δ, the protective portion 101 can be allowed to be slightly The flexural deformation allows the insertion of the insertion port 4 to be smoothly performed even when the flat cable 2 is inserted obliquely.

Further, according to the present embodiment, since the protective portion 101 of the protective member 100 is formed by processing one portion of the mounting portion 102 to which the protective member 100 is attached to the side wall 34, the protective portion 101 can be easily formed from the mounting portion 102. Further, since the mounting portion 102 and the protecting portion 101 can be strongly integrated, the protective portion 101 does not evade even when the front end corner portion 2C strongly interferes with the protecting portion 101 due to the oblique insertion of the flat cable 2. The front face 34a of the side wall 34 can be reliably protected.

Further, according to the present embodiment, the protective member 100 is formed in a U shape and covers the front surface 34a of the side wall 34 of the insertion opening 4. Therefore, the inner angle of the side wall 34 which is more easily damaged (the corner of the center side of the insertion opening 4) can be protected by the protective member 100, whereby the damage of the side wall 34 can be more reliably suppressed. Further, the front end corner portion 2C of the flat cable 2 that is in contact with the protective member 100 (protecting portion 101) can be smoothly guided toward the inside of the insertion port 4.

Further, according to the present embodiment, since the surface of the protective member 100 is plated, the surface of the protective member 100 is smooth, and the protective member 100 (protecting portion 101) can be prevented from being easily caught by the tip end corner portion 2C of the flat cable 2. The problem of cutting occurs.

Further, according to the present embodiment, the protective member 100 is provided on both side walls 34 of the insertion port 4, and the pair of protective members 100 are disposed to be bilaterally symmetrical. Therefore, the protective portion 101, the cable holding portion 103, and the like which are the pair of protective members 100 can be guided, held, and the like under the same conditions. Thereby, the insertion of the flat cable 2 into the insertion port 4 can be performed. In the meantime, the flat cable 2 is restrained from being tilted or hooked, and can be smoothly inserted.

Next, a modification of the protective member 100 will be described.

FIG. 8 is a view showing a first modification of the protective member. The protective member 100A includes the protective portion 101, the mounting portion 102, and the cable holding portion 103 in the same manner as the above-described embodiment.

The protective member 100A of the present modification is mainly different from the protective member 100 of the above-described embodiment in that the intermediate portion of the cable holding portion 103 is bent toward the central portion side in the width direction of the insertion opening 4, and the front end portion thereof is bent into Return to the side of the mounting portion 102.

With this configuration, the protective member 100A is provided with a raised portion 103b that protrudes toward the center portion side in the width direction of the insertion opening 4 in the intermediate portion of the cable holding portion 103. Moreover, by attaching the raised portion 103b to both sides of the flat cable 2, it is possible to prevent the mounting portion 102 from coming off.

FIG. 9 is a view showing a second modification of the protective member. The protective member 100B also includes the protective portion 101, the mounting portion 102, and the cable holding portion 103 similarly to the protective member 100 of the above-described embodiment.

The main difference between the protective member 100B of the present modification and the protective member 100 of the above-described embodiment is that in order to prevent the mounting portion 102 from being detached from the mounting hole 34b, the intermediate portion of the mounting portion 102 is provided to the back side (the insertion port 4) The locating pin 102b of the bulge of the outer side in the width direction.

According to this configuration, when the mounting portion 102 is inserted into the attachment hole 34b, the mounting portion 102 can be prevented from being detached by pressing the swelled side of the positioning pin 102b against the inner surface of the attachment hole 34b.

FIG. 10 is a view showing a third modification of the protective member. The protective member 100C includes the protective portion 101 and the mounting portion 102 similarly to the protective member 100 of the above-described embodiment, but the cable holding portion 103 is omitted.

In other words, in the present modification, the attachment portion 102 is not provided with the locking convex portion 102a and the positioning pin 102b, and is formed only in a rod shape, and the distal end portion 101a of the protection portion 101 is brought closer to the attachment portion 102 side.

Moreover, when the attachment portion 102 is inserted into the attachment hole 34b, the attachment portion 102 and the distal end portion 101a of the protection portion 101 strongly sandwich the side walls 34a, thereby preventing the attachment portion 102 from being detached.

FIG. 11 is a view showing a fourth modification of the protective member. The protective member 100D also includes the protective portion 101, the mounting portion 102, and the cable holding portion 103 in the same manner as the protective member 100 of the above-described embodiment.

The protective member 100D of the present modification is mainly different from the protective member 100 of the above-described embodiment in that the protective member 100D is integrally formed with the upper wall 33 of the casing 3. That is, the both side portions of the upper wall 33 are bent in the direction of the lower wall 32 (see FIG. 3) to provide the hanging portion 33a, and at the lower end of the hanging portion 33a, the mounting portion 102 of the protective member 100D is integrally formed.

Further, similarly to the protective member 100 of the above-described embodiment, the protective member 100D is inserted into and attached to the attachment holes 34b of the both side walls 34, and the upper wall 33 is attached while the protective member 100D is attached. In other words, the protective member 100D can also be mounted while the upper wall 33 is mounted.

Therefore, in the present modification, since the upper wall 33 and the protective member 100D are integrated, the number of components can be reduced, and the assembly work can be simplified.

The preferred embodiment of the present invention has been described above, but the present invention has been described. The present invention is not limited to the above embodiment, and various modifications can be made.

For example, the protective members 100 to 100D may be integrally formed (e.g., insert molded) into the housing 3 (e.g., the side walls 34, etc.). In this case, by the protective members 100 to 100D, the guiding function of inserting the flat cable 2 into the insertion port 4, the holding function of the flat cable 2, and the like can be improved, and the assembly of the connector 1 can be assembled. The process is simple.

Moreover, by forming the entire protective members 100 to 100D with a material having excellent elasticity (for example, phosphor bronze), it is possible to improve the retention of the flat cable 2 by the cable holding portion 103.

Further, it is also preferable to perform a friction increasing process (for example, a slight unevenness, a grain, a plating, or the like) which increases the frictional force of the flat cable 2 on the surface of the protective members 100 to 100D in advance. In this case as well, the cable holding portion 103 can be made to maintain the retainability of the flat cable 2.

Of course, various changes can be made without departing from the scope of the invention.

1‧‧‧Connector

2‧‧‧flat cable

2C (2C1, 2C2) ‧ ‧ front corner

3‧‧‧Shell

4‧‧‧ insertion port

5‧‧‧Connectors

6‧‧‧Leverage

31‧‧‧Ditch

34‧‧‧ side wall

34a‧‧‧ front

34b‧‧‧ mounting holes

34c‧‧‧ditch

100‧‧‧protective components

101‧‧‧Protection Department

102‧‧‧Installation Department

103‧‧‧ Cable Maintenance Department

Claims (11)

A connector comprising: a housing that houses a conductive joint; and an insertion port that is disposed on a front side of the housing and that is partitioned by a lower wall, an upper wall, and a side wall of the housing And a flat cable is inserted; the lever is disposed on a rear side of the casing, and the joint is crimped to the flat cable by a rotating operation to be electrically connected to each other; and the protective member is used To protect the side wall of the aforementioned insertion opening. The connector of claim 1, wherein the protective member includes: a protection portion for protecting a front surface of the side wall of the insertion port; and a cable holding portion extending from the protection portion to the insertion port On the deep side, a certain pressing force is applied to the flat cable. The connector of claim 1 or 2, wherein the protective member is made of a metal material having excellent wear resistance. A connector according to claim 1 or 2, wherein a gap is provided between the protective member and a front surface of the side wall of the insertion opening. The connector of claim 1 or 2, wherein the protective member is integrally formed in the housing. The connector of claim 1 or 2, wherein the protective member is formed in a U shape for covering the insertion opening The front side of the side wall. The connector of claim 1 or 2, wherein the surface of the protective member is plated. The connector according to claim 1 or 2, wherein the protective member is provided on both side walls of the insertion port, and the pair of protective members are disposed to be bilaterally symmetrical. The connector of claim 1 or 2, wherein the protective member is integrally formed with an upper wall of the casing. The connector of claim 1 or 2, wherein the protective member is made of a material having excellent elasticity. The connector according to claim 1 or 2, wherein a friction increasing treatment for increasing the flat cable is performed on a surface of the protective member.