KR20170112307A - Connector for flexible circuit cable - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible cable connector capable of preventing a failure in contact with a substrate caused by an external force acting on a cable by buffering an external force acting on an FFC or an FPC cable, A housing having a plurality of terminal insertion openings to allow insertion of a flexible cable; A terminal buffer portion extending from the cable connection portion and having a substrate surface contact portion extending from the terminal buffer portion to be in contact with the substrate, the cable connection portion protruding forwardly from which the cable is inserted, A contact terminal; An actuator for contacting or disconnecting the cable inserted into the contact terminal by the hinge rotation to the cable connection; And a fitting nail for fixing the housing to the substrate by having a housing connection portion contacting the housing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a connector, and more particularly, to a flexible cable connector capable of preventing contact failure caused by an external force acting on a flexible cable.

Recently, electronic devices have been miniaturized and improved in performance, and a large number of electronic devices are arranged on a printed circuit board (PCB), so that a large number of signals are input in parallel or outputted from a product. A flexible flexible flat cable (FFC) or a flexible printed circuit (FPC) is widely used for electrical connection of these devices. The FFC or FPC (hereinafter, referred to as "cable") has a plurality of electrodes arranged side-by-side to form one cable, and exhibits a higher degree of design freedom than a rigid PCB. Such a cable is detachably connected to a connector mounted on a substrate, and an electrical connection is made with the substrate via the connector.

FIG. 1 is a perspective view showing a connector according to a conventional technique, FIGS. 2 and 3 are cross-sectional views showing a joint structure of a contact terminal and a fitting nail of the connector shown in FIG. 1, Fig.

As shown in Fig. 1, the connector 1 'is mounted on a substrate 2 of an electronic device, and a cable 3 is inserted at one side to electrically connect the cable 3 and the substrate 3. The connector 1 'includes a housing 10 having a terminal insertion opening at a front side thereof, a plurality of contact terminals 20 disposed at predetermined intervals in the longitudinal direction of the housing at a predetermined interval to be laminated in the terminal insertion opening, And a fitting nail 40 for fixing the housing on the substrate.

2, the contact terminal 20 is divided into an upper support portion 21 and a lower contact portion 22 so as to receive the cable 2 in the space portion 23 therebetween, And the substrate contacts 24 are protruded downward and joined to the substrate 3 at the rear side. The substrate contact portion 24 is fixed to the substrate 3 while being coupled to the substrate 3 by a method such as a surface mount s.

3, the pressing nail 40 presses the housing 10 and the actuator 30 in the direction of the substrate 3, and the pressing portion 41 at one upper side protruding inward as shown in Fig. 3 presses the housing 10 and the actuator 30 in the direction of the substrate 3, (Not shown) protruding rearward is fastened to the housing 10, and the joining portion 42 of the other lower end protruding outwardly is coupled to the substrate 3. [ The bonding portion 42 is fixed to the substrate 3 while being coupled to the substrate 3 by a method such as surface mounting s.

An electrical signal can be transmitted between the cable 2 and the substrate 3 by fixing the contact terminal 20 to the substrate 3 while accommodating the cable 2 so that the fitting nail 40 can be transferred to the housing 3 The connector 1 'can be fixed to the substrate 3 by being fixed to the substrate 3 while pressurizing the connector 1'.

On the other hand, as shown in Fig. 4, when the cable 2 is connected to the connector 1 ', an external force can be applied to the cable 2. The external force may be caused by various factors such as interference between the cable 2 and other elements, careless handling by the user, and vibration of the electronic device. Particularly, in the curved display device, when the both ends of the cable 2 are connected to the connector 1 ', the cable 2 is moved along with the cable 2 when the display device is curved or the curvature is changed, So that an external force acts. The external force can act in the direction (x direction) in which the cable is inserted as shown in (a) or in the outward direction (y direction) in which the cable is inserted as shown in (b) have.

The external force acting on the cable 2 is transmitted to the contact terminal 20 as it is so that the contact between the substrate contact portion 24 of the contact terminal 20 and the substrate 3 is cut off or even separated . The external force is also transmitted to the fitting nail 40 through the contact terminal 20 and the housing 10 to break the bond between the bonding portion 42 of the fitting nail 40 and the substrate 3, .

Particularly, an external force applied in the direction (x direction) in which the cable 2 is inserted acts on the contact terminal 20 to cause a large influence on the contact between the substrate contact portion 24 of the contact terminal 20 and the substrate 3 And an external force exerted in both directions (y direction) in which the cable 2 is inserted acts on the fitting nail 40 so that a great influence is exerted on the coupling between the joining portion 42 of the fitting nail 40 and the substrate 3 .

As described above, in the flexible cable connector according to the related art, the external force acting on the cable often causes the coupling terminal to be separated from the contact terminal or between the fitting nail and the board.

Korean Patent Laid-Open No. 10-2013-0034418 (filed on Apr. 4, 2015,

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a flexible cable capable of preventing contact failure or coupling separation between a contact terminal and a substrate and between a fitting nail and a substrate, And a connector.

According to an aspect of the present invention, there is provided a connector including: a housing having a plurality of terminal insertion openings; A terminal buffer portion extending from the cable connection portion and having a substrate surface contact portion extending from the terminal buffer portion to be in contact with the substrate, the cable connection portion protruding forwardly from which the cable is inserted, A contact terminal; An actuator for contacting or disconnecting the cable inserted into the contact terminal by the hinge rotation to the cable connection; And a fitting nail for fixing the housing to the substrate by having a housing connection portion contacting the housing.

Here, the terminal buffer may include: a first linear portion extending upward from the substrate contact portion; A first curved surface portion in which a direction of the first linear portion is changed; And a connecting portion extending from the first curved portion end portion and connected to the cable connecting portion, the second curved portion end portion extending downward; And a second curved surface portion connected to the connection portion while the direction of the second linear portion end is switched.

The cable connection portion may include an upper support portion, a lower contact portion to which the rear portion is connected to the support portion, and a space portion that receives the cable between the support portion and the contact portion.

The terminal buffer may be configured such that an upper end thereof is located at a lower level than an upper end of the cable connection portion.

According to another aspect of the present invention, there is provided a connector comprising: a housing having a plurality of terminal insertion openings; A contact terminal having a cable connection portion protruding forwardly to which the cable is inserted, the contact terminal being coupled to the terminal insertion port to contact the substrate; An actuator for contacting or disconnecting the cable inserted into the contact terminal by the hinge rotation to the cable connection; And a housing connection portion contacting the housing, a nail buffer portion having at least one curved surface portion extending from the housing connection portion, and a substrate joining portion extending from the nail buffer portion to contact the substrate, Nail < / RTI >

Here, the nail buffer includes a first linear portion extending upward from the substrate joint portion; A first curved surface portion in which a direction of the first linear portion is changed; And a connection portion connected to the housing connection portion while extending from the first curved portion end portion, the second linear portion having the first curved portion end portion extending downward; And a second curved surface portion connected to the connection portion while the direction of the second linear portion end is switched.

In addition, the nail buffering portion may have a concave portion having a relatively narrow width so that the lateral side portion of the terminal is recessed inward.

The housing connection part may include at least one of a pressing part for pressing the upper surface of the housing and a fastening part protruding to the rear of the pressing part and fastened to the housing.

The connector of the present invention includes the terminal buffer portion interposed between the cable connection portion where the contact terminal is in contact with the cable and the substrate contact portion which is in contact with the substrate so that external force transmitted to the cable connection portion is absorbed by the terminal buffer portion, It is possible to minimize the influence on the contact point of the substrate and particularly to prevent the contact failure between the substrate contact portion and the substrate with respect to the external force applied in the cable insertion direction.

In addition, since the connector of the present invention includes the nail buffer portion interposed between the housing connection portion where the fitting nail contacts the housing and the substrate joint portion coupled to the substrate, external force transmitted to the fitting nail is absorbed by the nail buffer portion, It is possible to minimize the influence on the bonding of the substrate and particularly to effectively prevent the joining of the substrate joining portion and the substrate to the external force applied to both sides of the cable insertion direction.

1 is a perspective view showing a connector according to a conventional technique,
Fig. 2 is a cross-sectional view showing a contact terminal connection structure of the connector shown in Fig. 1,
3 is a sectional view showing a fitting nail coupling structure of the connector shown in Fig. 1,
4 is a conceptual diagram showing an external force applied to the connection between the cable and the connector,
5 is an exploded perspective view showing a connector according to an embodiment of the present invention,
Fig. 6 is an assembled perspective view showing the connector of Fig. 5,
Fig. 7 is a cross-sectional view showing in detail the coupling structure of the contact terminal, which is the main part of Fig. 6,
Fig. 8 is a perspective view showing the contact terminal of Fig. 7,
Fig. 9 is a conceptual diagram showing the buffering action of the contact terminal of Fig. 7,
FIG. 10 is a sectional view showing in detail the fitting structure of the fitting nail, which is the main part of FIG. 6,
11 is a perspective view showing the fitting nail of Fig. 10,
12 is a conceptual view showing a buffering action of the fitting nail of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 is an exploded perspective view illustrating a connector according to an embodiment of the present invention, and FIG. 6 is an assembled perspective view illustrating the connector of FIG. As shown in these drawings, the connector 1 of the present invention includes a housing 100, a contact terminal 200, an actuator 300, and a fitting nail 400. The connector 1 having the above configuration is mounted on the board 3 on which the predetermined circuit is printed and the cable 2 is connected to the board 3 while fixing the connection of the cable 2 inserted from the front side So that various signals are transmitted between them.

Specifically, the housing 100 includes a terminal insertion port 110, which is a body of the connector 1, and the terminal insertion port 110 is formed by a plurality of contact terminals 200 As shown in FIG. The housing 100 is made of a non-conductive synthetic resin for electrical insulation of each contact terminal 200.

The contact terminal 200 electrically connects the cable 2 and the substrate 3 and is inserted into each of the terminal insertion openings 110 of the housing 100. The cable connection part 230 is separated from the upper support part 210 and the lower contact part 220 and accommodates the cable 2 in the space part 222 formed therebetween, The substrate contact portion 240 is protruded downward and connected to the substrate 3 while being connected to the cable connection portion 230. Therefore, the contact terminal 200 serves as a path through which the cable 2 and the substrate 3 are electrically connected to each other and a signal is transmitted therebetween.

The cable connection part 230 may be composed of only the contact part 220 according to the structure of the connector and the substrate contact part 240 may be coupled to the substrate 3 by a method such as a surface mount s. In particular, the contact terminal 200 of the present invention includes a terminal buffering portion 250 having elasticity between the cable connecting portion 230 and the substrate contact portion 240. The terminal buffering portion 250 removes the cable connecting portion 230 And the substrate contact portion 240 can be expanded and contracted at predetermined intervals.

The actuator 300 has a structure in which the cable 2 is brought into contact with the contact terminal 200 in the housing 100 or the contact is released from the contact terminal 200 in the housing 100. The actuator 300 is rotatably mounted on the housing 100 or the fitting nail 400 . The actuator 300 presses or separates the cable 2 while reciprocally rotating in the horizontal and vertical directions. When the actuator 300 is rotated in the vertical direction, the space 222 of the contact terminal 200 is opened so that the cable 2 can be inserted into the housing 100 or removed from the housing 100, The pressing protrusion 330 presses the upper surface of the cable 2 to fix the cable 2 to the housing 100 and makes contact with the contact terminal 200. [

The turning operation of the actuator 300 as described above enables the cable 2 to be easily connected to and disconnected from the connector 1 and the connected cable 2 is held firmly in contact with the contact terminal 200, 2) and the substrate 3 can be stably transmitted.

The fitting nail 400 has a structure in which the housing 100 is fastened to the housing 100 and the housing 100 is fixed to the board 3. The housing 100 forms the body of the connector 1, (3). The fitting nail 400 for this purpose includes a housing connection part 430 formed on one side and a fastening part 420 fastened to the housing 100 and a pressing part 410 for pressing the housing 100, And the other substrate joining portion 440 is formed. The fitting nail 400 is coupled to the substrate 3 on both sides of the housing 100 and the substrate joining portion 440 is coupled to the substrate 3 in a state where the housing connecting portion 430 is fixedly coupled to the housing 100. [ Thereby fixing the housing 100.

The housing connection part 430 may be constituted by a pressing part 410 and a fastening part 420 or may be constituted by only one of them and the substrate bonding part 440 may be formed on the substrate 3 ). ≪ / RTI > Particularly, the fitting nail 400 of the present invention includes a nail buffering part 450 having elasticity between the housing connection part 430 and the substrate bonding part 440, and the housing connection part 430 is fixed by the nail buffering part 450, And the substrate bonding portion 440 can be stretched and contracted at predetermined intervals.

7 is a cross-sectional view showing in detail the coupling structure of the contact terminal, which is the main part of Fig. 6, Fig. 8 is a perspective view showing the contact terminal of Fig. 7, and Fig. 9 is a conceptual view showing a buffering action of the contact terminal of Fig.

7 and 8, the contact terminal 200 includes a cable connection portion 230 including a front upper support portion 210 and a front lower contact portion 220, a rear lower substrate contact portion 240, And a terminal buffering part 250 connecting the cable connecting part 230 and the board contact part 240. The supporting part 210 and the contact part 220 are connected to each other by a space part 222, .

The support portion 210 maintains the vertical direction of the actuator 300 when the space portion 222 is opened and the contact portion 220 is in electrical contact with the cable 2 when the cable 2 is inserted.

The actuator 300 includes a first support protrusion 310 which forms a rotation axis and is rotated in the horizontal and vertical directions in a state where the first support protrusion 310 is inserted into the fixing groove 211 of the support portion 210 . The first support protrusion 310 forms a flat support surface 312 so that when the actuator 300 is oriented in the vertical direction, the support surface 312 contacts the inner surface 212 of the fixing groove 211, So that the vertical state of the actuator 300 can be maintained. The first support protrusion 310 forms a curved surface 311 on the other surface so that the actuator 300 can be easily rotated in the horizontal direction by a small external force exerted arbitrarily from the outside. The actuator 300 rotated in the horizontal direction presses the upper surface of the cable 2 inserted into the space portion 222 to press the lower surface of the cable 2 and the contact portion 220, (2) to the housing (100). Thus, the contact between the cable 2 and the contact terminal 200 is firmly maintained by the horizontal rotation of the actuator 300. The contact portion 220 may have a contact protrusion 221 protruding from the inside of the end portion.

The substrate contact portion 240 protrudes rearward to a predetermined length so as to electrically contact the contact terminal 200 to be electrically connected to the substrate 3, As shown in Fig.

The terminal buffering part 250 is configured to block the external force from being transmitted between the cable connecting part 230 and the board contact part 240. The terminal buffer part 250 has one or more curved parts and is connected to the cable connecting part 230 and the board contact part 240 ). When the external force is applied to the cable 2 in the state that the cable 2 is connected to the contact terminal 200, since the cable 2 is in contact with the contact portion 220 by the actuator 300, 220). However, since the external force transmitted to the contact portion 220 is absorbed by the terminal buffer portion 250 and is not transmitted to the substrate contact portion 240, the substrate contact portion 240 is not affected by the external force. The terminal buffering part 250 connects the contact part 220 and the board contact part 240 in the direction in which the cable 2 is inserted so that the terminal buffer part 250 can efficiently block the external force applied in the direction in which the cable 2 is inserted have.

The terminal buffering part 250 for this purpose includes a first linear part 251 whose end portion of the substrate contact part 240 extends upward, a first curved surface part 252 of which the direction of the first linear part is changed, And a connection part 255 connected to the contact part 220 and the support part 210 while extending from the first curved part 251 and the first curved part 252 between the first curved part 252 and the connection part 255. [ A second linear portion 253 having an end extending downward and a second curved portion 254 connected to the connection portion 255 while the direction of the second linear portion is switched. That is, the terminal buffering part 250 is configured to connect the cable connection part 230 and the substrate contact part 240 with at least one curved surface part 252, 254. The terminal buffering unit 250 has at least one curved surface portion, because it can be stretched and expanded by elasticity due to a spring back phenomenon appearing in a curved surface structure.

The terminal buffering part 250 is configured such that the upper end thereof is located at a lower level than the upper end of the cable connecting part 230. That is, the first curved surface portion 252 of the terminal buffering portion 250 is formed at a low height forming a predetermined height h such that the upper end of the support portion 210 of the cable connection portion 230 is exposed rearward. The contact terminal 200 is coupled to the terminal insertion port 110 of the housing 100 while the rear portion of the support portion 210 is pressed so that the first curved surface portion 252 is positioned at a position where the contact terminal 200 is connected to the housing 100 The upper end portion is positioned at a lower level than the upper end portion of the support portion 210 so as to expose the support portion 210 to the rear so as not to interfere with the joining process.

9, the terminal buffering part 250 having the above-described structure is elastically deformed when the external force is applied from the cable connecting part 230 toward the substrate contact part 240 or vice versa, And the substrate contact portion 240 fixed to the substrate 3 hardly transmits the influence of the external force. In addition, the terminal buffering part 250 returns to its original state due to elasticity when the external force disappears. Even if an external force is applied to the cable connection part, the external force is absorbed by the terminal buffer part and is not transmitted to the substrate contact part, so that the connection with the substrate can be stably maintained in the substrate contact part.

FIG. 10 is a sectional view showing in detail the fitting structure of the fitting nail which is the main part of FIG. 6, FIG. 11 is a perspective view showing the fitting nail of FIG. 10, and FIG. 12 is a conceptual view showing a buffering action of the fitting nail of FIG.

10 and 11, the fitting nail 400 of the present invention includes an inner housing connection part 430 including a pressing part 410 and a fastening part 420, a substrate bonding part 440 protruding to the outer lower end And a nail buffering part 450 connecting the housing connection part 430 and the substrate bonding part 440. The fitting nail 400 is coupled to the substrate 3 while pressing the housing 100 on both sides of the housing 100. The housing connecting portion 430 is positioned on the inner side and the substrate joining portion 440 is positioned on the outer side So that the housing connecting portion 430 and the substrate joining portion 440 are disposed in both sides in which the cable 2 is inserted.

The pressing portion 410 is configured to press the housing 100 to prevent the housing 100 from being detached from the fitting nail 400. The pressing portion 410 is in contact with the upper surface of the housing directly at the side of the housing 100, Contact and pressurized. In addition, the pressing portion 410 may have a supporting protrusion 411 whose end portion is bent downward to fix the actuator 300. The actuator 300 has the second support protrusion 320 corresponding to the support protrusion 411 formed on the side portion thereof so that the second support protrusion 320 is rotatably supported on the support protrusion 411 It hangs and maintains the horizontal state. The pressing portion 410 is configured to press the upper surface of the housing, but it is also possible to be configured to press the side surface of the housing. At this time, the second support protrusions 320 and the support protrusions 411 for fixing the actuator 300 may be formed at different positions.

The fastening part 420 is integrally fastened to the housing to prevent the housing 100 from being separated from the fitting nail 400. The fastening part 420 is protruded rearward from the pressing part 410 and inserted into the housing 100, So that no flow occurs between the fastening portion 420 and the housing 100.

The substrate joining portion 440 is configured to fix the fitting nail 400 to the substrate 3 and may extend outward at the lower end of the nail buffer 450 and may be coupled to the upper surface of the substrate 3 in a surface mount s .

The nail buffering part 450 is configured to block an external force that may be transmitted between the housing connection part 430 and the substrate bonding part 440. The nail buffering part 450 has a structure in which the housing connection part 430 and the substrate bonding part 440, (440). The fitting nail 400 is fixed to the housing 100 by the actuator 300 when an external force is applied to the cable 2 in a state where the cable 2 is connected, 100 to the housing connection part 430 as it is. However, since the external force transmitted to the housing connection part 430 is absorbed by the nail buffer part 450 and is not transmitted to the substrate bonding part 440, the substrate bonding part 440 is not affected by the external force. The nail buffering part 450 connects the housing connecting part 430 and the substrate joining part 440 in both directions of the insertion of the cable 2 so that the nail buffering part 450 can efficiently and externally apply the external force applied to both sides of the cable 2, Can be blocked.

11, the nail buffering part 450 includes a first linear part 451 whose end portion of the substrate joining part 440 extends upward, And a connecting portion 455 connected to the housing connecting portion while the first curved portion end portion extends downward. The first curved portion 452 and the second curved portion 455 may be formed between the first curved portion 452 and the connecting portion 455, A second linear portion 453 having an end extending downward and a second curved portion 454 connected to the connection portion 455 while the direction of the second linear portion is switched. That is, the nail buffering part 450 is configured to connect the housing connection part 430 and the substrate bonding part 440 with at least one curved surface part 452 and 454.

12, when the external force is applied to the nail buffering part 450 in the direction of the substrate joining part 440 in the housing connecting part 430 or in the opposite direction, the nail buffering part 450 having the above- The influence of the external force is hardly transmitted to the substrate bonding portion 440 which is stretched and contracted in the external force direction on the axis and fixed to the substrate 3. [ Further, when the external force is lost, the nail buffer 450 returns to its original state due to elasticity. Even if an external force is applied to the housing connection portion, the external force is absorbed by the nail buffer portion and is not transmitted to the substrate connection portion, so that the connection between the substrate connection portion and the substrate can be stably maintained.

The nail buffering part 450 has a predetermined width and is provided with a recess 451 having a relatively narrow width so that the nail buffering part 450 can be smoothly expanded and contracted by an external force between the housing connecting part 430 and the substrate joining part 440. [ 'May be formed. The concave portion 451 'may be formed by recessing both sides of the nail buffer 450 in the width direction concave inward, and may be formed at any position of the linear portion or the curved portion, or may be formed more than one. The concave portion 451 'is formed with a relatively narrow width to exhibit the warping characteristic and the rotation characteristic with respect to the width direction. Therefore, the concave portion 451 'is bent or rotated in the width direction against an external force transmitted in the direction (x direction) in which the cable 2 is inserted or the like, and the external force is transmitted to the substrate joining portion 440 Can be effectively blocked.

As described above, the connector of the present invention can prevent the connection failure between the contact terminal and the substrate and between the fitting nail and the substrate because external force applied to the cable is blocked at the terminal buffer and the nail buffer even if the external force applied to the cable is transmitted to the connector . While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: housing 110: terminal insertion opening
200: contact terminal 210: support
220: contact portion 230: cable connection portion
240: substrate contact part 250: terminal buffer part
251: first linear portion 252: first curved portion
253: second linear portion 254: second curved portion
255: Connection
300: actuator 310: first support projection
320: second support projection
400: fitting nail 410: pressing part
420: fastening part 430: housing connection part
440: substrate bonding portion 450: nail buffering portion
451: first linear portion 452: first curved portion
453: second linear portion 454: second curved portion
455: Connection

Claims (10)

A housing having a plurality of terminal insertion openings;
A terminal buffer portion extending from the cable connection portion and having at least one curved surface portion and a substrate contact portion extending from the terminal buffer portion so as to contact the substrate, Contact terminal;
An actuator for contacting or disconnecting the cable inserted into the contact terminal by the hinge rotation to the cable connection; And
And a fitting nail having a housing connection portion that contacts the housing to fix the housing to the substrate. The terminal according to claim 1,
A first linear portion extending upward from the substrate contact portion;
A first curved surface portion in which a direction of the first linear portion is changed; And
And a connection portion extending from the first curved portion end portion and connected to the cable connection portion. The terminal according to claim 2,
A second linear portion having an end of the first curved portion extending downward; And
And a second curved portion connected to the connection portion while the direction of the second linear portion is switched. The cable connector according to claim 1,
And a space portion for accommodating the cable between the support portion and the contact portion, wherein the flexible cable connector comprises a support portion on the upper side, a contact portion on the lower side where the rear portion is connected to the support portion, and a space portion for accommodating the cable between the support portion and the contact portion. The terminal according to claim 1,
And the upper end portion is positioned at a lower height than the upper end of the cable connection portion. A housing having a plurality of terminal insertion openings;
A contact terminal having a cable connection portion protruding forwardly to which a cable is inserted, the contact terminal being coupled to the terminal insertion port to contact the substrate;
An actuator for contacting or disconnecting the cable inserted into the contact terminal by the hinge rotation to the cable connection; And
A nail buffering portion extending from the housing connecting portion and having a substrate connecting portion contacting at least one curved surface portion and a substrate bonding portion extending from the nail buffering portion to be in contact with the substrate and having a fitting nail for fixing the housing to the substrate, And a flexible cable connector. 7. The nail buffer according to claim 6,
A first linear portion extending upward from the substrate joint portion;
A first curved surface portion in which a direction of the first linear portion is changed; And
And a connection portion extending from the first curved portion end portion and connected to the housing connection portion. 8. The nail buffer according to claim 7,
A second linear portion having an end of the first curved portion extending downward; And
And a second curved portion connected to the connection portion while the direction of the second linear portion is switched. The nail buffer according to claim 7 or 8,
And a concave portion having a width direction side portion recessed inward and having a relatively narrow width. The connector according to claim 6,
A pressing portion for pressing an upper surface of the housing; and a fastening portion protruding rearward of the pressing portion and fastened to the housing.

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