JP5800598B2 - Flat circuit assembly structure - Google Patents

Description

  The present invention relates to a flat circuit body assembly structure in which a flat circuit body is assembled to a housing to constitute a connector.

  Conventionally, for example, a flexible printed wiring base wall (hereinafter referred to as FPC) formed by baking an electric conductor on an insulating film, or a flexible flat formed by insulatingly covering a plurality of conductors arranged in parallel to each other・ Flat circuit bodies such as cables enable wiring in narrow places due to their structure, and because they can be used for movable parts due to their flexible properties, they can be used for wire harnesses that connect automobile electrical components and computer Widely used in various devices such as machines.

  By the way, since these flat circuit bodies have flexibility, when they are connected to a connector, it is necessary to make the terminal into a rigid terminal (see Patent Document 1 and Patent Document 2). FIG. 16 is a cross-sectional view showing a conventional connector structure. As shown in FIG. 16, the conventional connector structure 100 described in Patent Document 1 includes a plurality of connection terminals 125, a connector housing 121 having a plurality of terminal accommodation chambers 126 for accommodating these connection terminals 125, and the terminals. A holder 105 having a plurality of flat plate portions 151 fitted in the accommodation chamber 126 and an FPC 101 as a flat circuit body held by the holder 105 are provided.

  The holder 105 includes a plurality of base portions 150 and a plurality of flat plate portions 151 extending from the base portions 150 toward the connector housing 121. Each of the plurality of flat plate portions 151 is provided with a pair of fixing pins 110. The pair of fixing pins 110 are provided at the end (root) of the flat plate portion 151 on the base portion 150 side. Further, the pair of fixing pins 110 are provided on the front side surface and the back side surface of the flat plate portion 151 and are convex in a direction away from each other.

  In the FPC 101, a plurality of conductors (not shown) constituting a predetermined circuit are baked on an insulating film (not shown), and the plurality of conductors are covered with an insulating sheet (represented by reference numeral 101). Further, the FPC 101 is formed with a conductive portion in which conductors are arranged in parallel at a predetermined interval. In the insulating film between the conductors in the conductive portion, a pair of attachment holes 102 are formed which are inserted into the pair of fixing pins 110 of each flat plate portion 151. The FPC 101 is assembled to the holder 105 by inserting each mounting hole 102 of the FPC 101 into each fixing pin 110 of each flat plate portion 151.

JP 2001-68189 A JP 2002-124326 A

  However, the conventional connector structure 100 described above has the following problems. That is, in the conventional connector structure 100, a loose position between the fixing pins 110 of the holder 105 and the mounting holes 102 of the FPC 101 may cause looseness between the FPC 101 and the holder 105 around which the FPC 101 is wound. There was a problem that there was. If looseness occurs between the FPC 101 and the holder 105 around which the FPC 101 is wound, there is a possibility that a contact failure between the FPC 101 and the other connection terminal 125 may occur or the FPC 101 may be damaged by the connection terminal 125. There was a problem.

  The object of the present invention is to solve the above problems. That is, the present invention provides a flat circuit assembly assembly structure that can prevent looseness between the flat circuit body and the winding portion around which the flat circuit body is wound, and in addition, can improve waterproofness. The purpose is to provide.

According to the first aspect of the present invention, a base wall provided with a through hole, a pair of convex portions provided on the back side surface of the base wall, and positioning the through hole between each other, and a front side surface of the base wall A pair of hole portions including a housing having a peripheral wall that is provided and fitted with the counterpart housing, a winding portion that protrudes into the peripheral wall, and a long hole that fits into the pair of convex portions are spaced apart in the longitudinal direction. comprising a provided et the flat circuit body, wherein the winding portion, the is an elastic member for biasing the flat circuit member in the protruding direction, fitted the flat circuit body is the through the one of the protrusions It is inserted through a hole, spanned along the winding portion, inserted through the through hole again, and the elongated hole is hooked on the other convex portion in a state where the flat circuit body is pulled. This is a flat circuit assembly structure.

  With the above configuration, the flat circuit body is pulled, the winding portion formed of the elastic body is compressed, and the flat circuit body is pressed in the opposite direction by the compression reaction force.

  According to a second aspect of the present invention, in the first aspect of the invention, there is provided an elastic plug portion that abuts the end of the winding portion on the base wall side and closes the through hole, and the plug portion includes the penetrating portion. The cross-sectional area is larger than the hole.

  With the above configuration, the elastic plug portion is press-fitted into the through-hole and is in close contact.

  According to a third aspect of the present invention, in the second aspect of the present invention, a rib is erected on the base wall so as to surround the through hole and the pair of convex portions, and silicone is placed inside the rib. It is characterized by being poured.

  With the above configuration, liquid silicone is filled in the frame-shaped rib and cured at room temperature.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a flange portion is provided around the winding portion, and the slit for inserting the flat circuit body is the flange portion. A pair is provided on both sides of the wrapping portion, and the flange portion is in contact with the front side surface of the base wall.

  With the above configuration, the winding portion is assembled from the front side of the housing, and the hook portion comes into contact with the base wall when the flat circuit body is pulled to receive the pulling force.

  According to the invention of claim 1, the winding part is configured by an elastic body that urges the flat circuit body in a protruding direction, and the elongated hole is formed in the other convex part in a state where the flat circuit body is pulled. Since it is hooked, it is possible to prevent loosening between the flat circuit body and the wrapping part, to prevent poor contact between the flat circuit body and the counterpart terminal, and to damage the flat circuit body. Can be prevented.

  According to invention of Claim 2, it comprises the elastic plug part which contact | abuts the edge part by the side of the said base wall of the said winding part, and plugs up the said through-hole, This plug part has a larger cross-sectional area than the said through-hole. Therefore, it is possible to reliably prevent liquid such as water from entering the front side of the base wall and the back side of the base wall from the through hole.

  According to the third aspect of the present invention, a rib is provided on the base wall so as to surround the through hole and the pair of convex portions, and silicone is poured into the rib, so that a liquid such as water can be used. Can be more reliably prevented from entering the front side of the base wall and the back side of the base wall from the through hole.

  According to the fourth aspect of the present invention, a flange is provided around the winding portion, a pair of slits for inserting a flat circuit body is provided on both sides of the winding portion in the flange, and the flange is the base. Since it abuts on the front side surface of the wall, the winding portion can be assembled to the housing by an easy operation of abutting the collar portion on the front side surface of the base wall, and the assembling workability can be improved. In addition, since the collar portion comes into contact with the base wall and receives the tensile force when the flat circuit body is pulled, the flat circuit body can be pulled strongly.

It is sectional drawing which shows one Embodiment of the flat circuit body assembly | attachment structure concerning this invention. It is sectional drawing which shows the state which the other party connector fitted in the connector in the flat circuit body assembly | attachment structure shown by FIG. It is a perspective view which shows the front side of the housing which comprises the connector shown by FIG. It is a perspective view which shows the back side of the housing shown by FIG. FIG. 4 is a perspective view illustrating a state in which liquid silicone is poured into the housing illustrated in FIG. 3. It is a perspective view which shows the routing member which comprises the connector shown by FIG. It is the perspective view which looked at the routing member shown by FIG. 5 from another angle. It is a perspective view which shows the state by which the routing member shown by FIG. 6 was arrange | positioned at the housing. It is a perspective view which shows FPC which comprises the connector shown by FIG. FIG. 10 is a perspective view illustrating a state in which the FPC is assembled to the housing illustrated in FIG. 9. It is a figure which expands and shows the principal part of the housing shown by FIG. It is a fragmentary sectional view which follows the II line | wire in FIG. It is a perspective view which shows the plug part which comprises the connector shown by FIG. It is a perspective view which shows the state by which the plug part was assembled | attached to the housing shown by FIG. It is a perspective view which shows the other party connector shown by FIG. It is sectional drawing which shows the conventional connector structure.

  A connector in a flat circuit assembly structure according to an embodiment of the present invention will be described with reference to FIGS. The connector 2 'constitutes a part of a wire harness that connects an in-vehicle camera that is an electrical component of an automobile. As shown in FIGS. 1 and 2, the connector 2 ′ protrudes into the peripheral wall 24, the housing 2 having a peripheral wall 24 into which a mating housing 8 (described later) of the mating connector 7 into which the connector 2 ′ is fitted, is fitted. A routing member 3 having a winding portion 31 to be wound, an FPC (flexible print cable) 4 routed along the winding portion 31, and an elastic plug for closing a through-hole 22 described later provided in the housing 2 Part 5.

  As shown in FIGS. 3 and 4, the housing 2 is provided with a plate-like base wall 21 provided with a through hole 22, and a protrusion 42 a, which will be described later, of the FPC 4. Four bosses 23a, 23b that fit into the b, and a peripheral wall 24 that is provided on the front side surface of the base wall 21 and surrounds the through hole 22, and a frame shape that surrounds the through hole 22 and the four bosses 23a, 23b. A rib 26 into which liquid silicone is poured, and a frame portion 27 that stands up from the periphery of the base wall 21 and surrounds the rib 26. Further, in the present invention, the upper side in the paper surface direction from the base wall 21 in FIGS. 1, 2, and 12 is expressed as “front”, and the lower side in the paper surface direction from the base wall 21 is expressed as “back”. .

  As shown in FIGS. 3 and 4, the through-hole 22 includes a pair of first inner surfaces 22a and 22b facing each other, a pair of second inner surfaces 22c and 22d connected to the edges of the first inner surfaces 22a and 22b, It is constituted by. These inner surfaces 22a, 22b, 22c, and 22d are connected to the front side surface and the back side surface of the base wall 21. The front side edge of the base wall 21 and the back side edge of the base wall 21 in each inner surface 22a, 22b, 22c, 22d are chamfered. The dimension of each first inner surface 22a, 22b in the arrow Y direction is larger than the dimension of each second inner surface 22c, 22d in the arrow X direction, and the through hole 22 is formed in a rectangular shape in plan view.

  In this specification, the arrow X indicates the width direction of the through hole 22, the arrow Y indicates the longitudinal direction of the through hole 22, and the arrow Z is a direction orthogonal to the arrow Y direction and the arrow X direction. The through direction of the through hole 22, the height direction of the connector 2 ′, the fitting direction between the connector 2 ′ and the mating connector 7, and the protruding direction of the winding portion 3 are shown.

  Moreover, the dimension of the longitudinal direction (arrow Y direction) of the through-hole 22 is formed so that it may become slightly larger than the width direction (arrow X direction) of FPC4 mentioned later. The FPC 4 is routed so that the longitudinal direction of the through hole 22 and the width direction of the FPC 4 are parallel, and the width direction of the through hole 22 and the longitudinal direction of the FPC 4 are parallel.

  As shown in FIG. 4, the four bosses 23 a and 23 b are provided in pairs at positions where the through holes 22 are positioned between each other. The pair of bosses 23a and 23b are arranged in the longitudinal direction of the through hole 22 (arrow Y direction) with a space between each other. Each boss 23a, 23b is formed in a convex cylindrical shape from the back side surface of the base wall 21. Each of the pair of bosses 23a and 23b corresponds to “a pair of convex portions” shown in the claims. The two bosses 23b correspond to “one convex portion” shown in the claims, and the two bosses 23a correspond to “the other convex portions” shown in the claims. Each pair of bosses 23a and 23b may be provided at least in a pair at a position where the through hole 22 is positioned between them.

  As shown in FIG. 3, the peripheral wall 24 includes a pair of first wall portions 24a and 24b that position the through hole 22 therebetween, and a pair of second wall portions 24c and 24d that connect the wall portions 24a and 24b to each other. And is formed in a frame shape. The dimensions of the first wall portions 24a and 24b in the arrow Y direction are larger than the dimensions of the second wall portions 24c and 24d in the arrow X direction, and the peripheral wall 24 is formed in a rectangular shape in plan view. Further, a locking projection 25 that locks in a locking hole 83 (described later) of the counterpart housing 8 is provided on the outer surface of one of the pair of first wall portions 24 a and 24 b.

  The rib 26 includes four partition walls 26a as shown in FIG. These partition walls 26a are formed in the same shape, and the ribs 26 are formed in a rectangular shape in plan view. As shown in FIG. 5, liquid silicone is poured into the ribs 26 to fill the ribs 26, and the liquid silicone is elastically cured. The cover part 6 which embed | buried etc. is formed. Since this cover part 6 further covers the through hole 22 of the base wall 21 closed by the plug part 5, liquid such as water enters the front side of the base wall 21 and the back side of the base wall 21 from the through hole 22. Can be surely prevented.

  As shown in FIG. 4, the frame portion 27 includes four outer walls 27a. These outer walls 27a are formed in the same shape, and the ribs 26 are formed in a rectangular shape in plan view.

  As shown in FIGS. 6 and 7, the routing member 3 includes a winding member 31 including a winding portion 31 made of an elastic body such as rubber, and a pair of holding portions 32 that hold the winding portion 31. And a plate-like flange portion 33 that is continuous with each of the pair of holding portions 32 and extends around the winding member 30.

  As shown in FIG. 6, the winding member 30 protrudes from the surface of a flange portion 33 described later. The winding member 30 has a semicircular cross-section at the distal end portion 3a away from the flange portion 33 of the winding member 30. The winding member 30 has a flat base end 3b.

  The pair of holding portions 32 protrude from the surface of the flange portion 33. Further, the pair of holding portions 32 are provided at intervals in the arrow Y direction, and are connected to both ends of the winding portion 31.

  A notch (not shown) that extends in the protruding direction (in the direction of arrow Z in FIG. 6) and cuts off the tip of the winding portion 31 may be provided between the winding portion 31 and each holding portion 32. By providing this cut, the winding portion 31 can be greatly deformed compared to the case where no cut is provided.

  As shown in FIG. 7, the flange portion 33 is provided with a pair of slits 34 for inserting FPCs on both sides of the winding portion 31 in the arrow X direction. Each slit extends in the longitudinal direction of the through hole 22. The pair of slits 34 overlap the through hole 22.

  When arranging the routing member 3 in the housing 2, the winding portion 31 is formed by overlapping the back side surface of the flange portion 33 in the peripheral wall 24 on the front side surface of the base wall 21, as shown in FIGS. 1 and 8. Projecting into the peripheral wall 24, and a pair of slits 34 overlap the through hole 22. At this time, the tip of the winding member 30 is positioned lower than the peripheral wall 24, that is, below, as shown in FIG.

  As shown in FIG. 9, the FPC 4 has a plurality of conductors 40 and a covering portion 41 that covers the conductors 40 and is formed in a flat belt shape. The conductor 40 is made of a conductive metal containing at least copper or a copper alloy. The conductor 40 has a rectangular cross-sectional shape, and a plurality of conductors 40 extend in parallel to each other. The covering portion 41 is made of an insulating synthetic resin, is formed in a flat belt shape, and covers the conductor 40. Further, the covering portion 41 electrically insulates the plurality of conductors 40 from each other. The FPC 4 corresponds to a “flat circuit body” recited in the claims. In the present specification, the “flat circuit body” means a flat belt body that includes a plurality of conductors 40 and a covering portion 41 that covers the conductors 40. As the “flat circuit body”, an FFC (flexible flat cable) can be used instead of the FPC 4. In FIG. 9, the conductor is omitted.

  As shown in FIG. 9, the FPC 4 is provided with two bent portions 4a and 4b bent in an L shape, and a U-shaped electrical connection portion 43 between the two bent portions 4a and 4b. Yes. The FPC 4 is provided with a pair of holes 42a and 42b that fit into the boss 23 of the housing 2 described above. One of the pair of holes 42 a and 42 b is a circular hole 42 a having a regular circular shape, and the other is a long hole 42 b that is long in the longitudinal direction of the FPC 4. The circular hole 42a is provided on one end side in the longitudinal direction of the FPC 4 with respect to the bent portion 4a, and the long hole 42b is provided on the other end side in the longitudinal direction of the FPC 4 with respect to the bent portion 4b. That is, the circular hole 42a is provided on one end side in the longitudinal direction of the FPC 4 with respect to the other long hole 42b. The pair of holes 42a and 42b are provided in the covering portion 41 where the above-described conductor is not provided. Further, the pair of holes 42a and 42b correspond to “a pair of holes” recited in the claims.

  In addition, the conductor 40 is exposed to the outside of the electrical connection portion 43 where the terminal 9 of the mating connector 7 to be described later contacts. The electrical connection portion 43 is wound around the winding portion 31.

  When the FPC 4 is assembled to the housing 2 and the routing member 3, the two circular holes 42a on one end side of the FPC 4 are formed with the housing 2 disposed on the routing member 3 as shown in FIGS. The other end of the FPC 4 is inserted into the two through-holes 22 and one slit 34 which are overlapped with each other, and is inserted into the other slit 34 and the through-hole 22 which are overlapped with each other. The two long holes 42b are hooked on the two bosses 23b while pulling the ends. In this way, the FPC 4 is wound around the boss 23a from the boss 23a along the winding portion 31. At this time, as shown in FIG. 12, the winding portion 31 is compressed by pulling the FPC 4, and the FPC 4 is pulled in the opposite direction by the compression reaction force. That is, the winding part 31 urges the FPC 4 in the protruding direction (arrow Z direction). Further, when the FPC 4 is pulled, the flange portion 33 comes into contact with the base wall 21 and receives the pulling force. As a result, the FPC 4 is assembled to the housing 2 and the routing member 3 without looseness.

  The plug portion 5 is made of an elastic body such as rubber. Further, as shown in FIG. 13, the plug portion 5 includes a pair of first surfaces 5a and 5b facing each other and a pair of second surfaces 5c connected to both edges a in the width direction of the surfaces 5a and 5b. 5d and a pair of third surfaces 5e and 5f connected to both longitudinal edges b of the surfaces 5a, 5b, 5c and 5d are formed in a rectangular column shape. Each said surface 5a, 5b, 5c, 5d is formed in the rectangular shape. The plug portion 5 is formed such that the dimension of the edge a is larger than the dimension of the through hole 22 in the longitudinal direction, the dimension of the edge b is larger than the dimension of the through hole 22 in the width direction, and the second surface 5c. The area of 5d is larger than the through hole 22. The areas of the second surfaces 5c and 5d correspond to the “cross-sectional area of the plug portion” described in the claims.

  As shown in FIG. 14, the plug portion 5 is pressed into the through hole 22 so as to close the through hole 22 of the base wall 21, and is compressed in one of the pair of second surfaces 5 c and 5 d. The surface 5c contacts the base end 3b of the winding portion 3, and the first surfaces 5a and 5b elastically contact the first inner surfaces 22a and 22b of the through hole 22 by the compression reaction force of the plug portion 5, The third surfaces 5e and 5f are in elastic contact with the second inner surfaces 22c and 22d of the through hole 22, respectively. The plug portion 5 comes into close contact with the inner surfaces 22a, 22b, 22c, and 22d of the 22 by elastically contacting the inner surfaces 22a, 22b, 22c, and 22d of the through-hole 22. Accordingly, it is possible to reliably prevent liquid such as water from entering the front side of the base wall 21 and the back side of the base wall 21 from the through hole 22.

  As shown in FIGS. 2 and 15, the counterpart connector 7 includes a plurality of (three in the illustrated example) terminals 9, a terminal accommodating chamber 81 that accommodates these terminals 9, and a plurality of terminals 9 connected to each terminal 9. And a counterpart housing 8 having a wire housing chamber 85 (shown in FIG. 2) for housing the wire 10.

  Each of the terminals 9 includes a pair of wire connection portions 91 connected to each of the pair of wires 10, and each elastic contact piece 92 connected to each of the pair of wire connection portions 91. The pair of elastic contact pieces 92 electrically connect the terminal 9 and the FPC 4 by sandwiching the winding portion 31 and the electrical connection portion 43 of the FPC 4 described above between each other. The terminals 9 are arranged at intervals in the arrow Y direction, and each pair of elastic contact pieces 92 is provided in a direction (arrow X direction) orthogonal to the direction in which the terminals 9 are arranged (arrow Y direction).

  As shown in FIG. 15, the counterpart housing 8 includes a counterpart housing main body 80 having a terminal accommodating chamber 81 and a wire accommodating chamber 85 (shown in FIG. 2) connected to the terminal accommodating chamber 81, and the counterpart housing main body 80. And a cylindrical outer wall 82 that surrounds. The outer wall 82 has a locking hole 83 for locking the locking projection 25 provided on the peripheral wall 24 of the connector, and a pair of holes provided on both sides of the locking hole 83, with the edges of the outer wall 82 cut out. And a slit 84.

  Next, a procedure for assembling the connector 2 ′ having the above-described configuration will be described below. First, the housing 2 is molded by a known injection molding. Further, the winding part 31 is formed in a primary molding die (not shown), the winding part 31 is accommodated in a secondary molding die (not shown), and the molten resin is injected into the secondary molding die, whereby the winding part 31, the routing member 3 which has a pair of holding | maintenance part 32 and the collar part 33 integrally is shape | molded. That is, the routing member 3 is integrally formed by two-color molding. The routing member 3 is arranged on the front side of the housing 2 and the FPC 4 is assembled. Thereafter, the plug portion 5 is press-fitted into the through-hole 22, liquid silicone is poured into the rib 26, and the silicone is cured at room temperature to form the cover portion 6. Thus, the connector 2 'is assembled.

  Next, a procedure for fitting the connector 2 'and the mating connector 7 will be described with reference to FIG. First, the counterpart housing body 80 is brought close to the peripheral wall 24 of the connector 2 '. The pair of elastic contact pieces 92 of the mating connector 7 sandwich the winding portion 31 and the electrical connection portion 43 of the FPC 4, and the locking hole 83 locks the locking protrusion 25. Thus, the FPC 4 and the terminal 9 of the counterpart connector 7 are electrically connected, and the connector 2 ′ and the counterpart connector 7 are fitted.

  According to the above-described embodiment, the winding portion 31 is configured by an elastic body that biases the FPC 4 as a flat circuit body in the protruding direction, and the boss 23b as the other convex portion has a long hole when the FPC 4 is pulled. Since 42b is hooked, the winding portion 31 is compressed when the FPC 4 is pulled, and the FPC 4 is pressed in the opposite direction by the compression reaction force, so that looseness occurs between the FPC 4 and the winding portion 31. Therefore, the contact failure between the FPC 4 and the counterpart terminal 9 can be prevented, and the FPC 4 can be prevented from being damaged.

  Further, the plug portion 5 is provided with an elastic plug portion 5 that abuts the end portion 31a on the base wall 21 side of the winding portion 31 and closes the through hole 22. The plug portion 5 has a larger cross-sectional area than the through hole 22. As a result, the through hole 22 is closed without a gap, and it is possible to reliably prevent liquid such as water from entering the front side of the base wall 21 and the back side of the base wall 21 from the through hole 22.

  Further, a rib 26 is provided on the base wall 21 so as to surround the through hole 22 and the bosses 23a and 23b as a pair of convex portions, and liquid silicone is poured into the rib 26 so that the liquid silicone is framed. Since it is filled in the shape of the rib 26 and hardened at room temperature, it is further ensured that liquid such as water enters the front side of the base wall 21 and the back side of the base wall 21 from the through hole 22. Can be prevented.

  Further, a flange portion 33 is provided around the winding portion 31, and slits 34 for inserting an FPC are provided on both sides of the winding portion 31 in the flange portion 33, and the flange portion 33 abuts on the front side surface of the base wall 21. When the FPC 4 is pulled, the flange portion 33 comes into contact with the base wall 21 to receive the pulling force, and the winding portion 31 is assembled to the housing 2 by an easy operation of bringing the flange portion 33 into contact with the front side surface of the base wall 21. As a result, assembly workability can be improved. Further, when the FPC 4 is pulled, the flange portion 33 comes into contact with the base wall 21 and receives the pulling force, so that the FPC 4 can be pulled strongly.

  In the above-described embodiment, the connector 2 ′ includes the cover portion 6 formed by pouring liquid silicone into the rib 26, but the present invention is not limited to this, and the cover 2 The part 6 may be omitted. That is, the connector 2 ′ only needs to include the housing 2, the routing member 3, the FPC 4, and the plug portion 5.

  In the above-described embodiment, the connector 2 ′ includes the plug portion 5. However, the present invention is not limited to this, and the plug portion 5 may not be provided. That is, the connector 2 ′ only needs to include the housing 2, the routing member 3, and the FPC 4. Further, when the plug portion 5 is not provided, the cover portion 6 formed by pouring silicone into the rib 26 may not be provided.

  Moreover, in embodiment mentioned above, although connector 2 'comprises a part of wire harness which connects the vehicle-mounted camera which is an electrical component of a motor vehicle, in addition to a camera, for example, the connector which comprises a wire harness The present invention can also be applied to the case where the device direct connection connector is connected.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Assembly structure of flat circuit body 2 Housing 2 'Connector 4 FPC (flat circuit body)
8 Counterpart housing 21 Base wall 22 Through hole 23a Boss (the other convex part)
23b Boss (one convex part)
24 peripheral wall 26 rib 31 winding part 3b base end (end part) of winding part
33 collar 34 slit 42a, 42b circular hole, long hole (a pair of holes)

Claims (4)

A base wall provided with a through hole, a pair of projections provided on the back side surface of the base wall, positioning the through hole between each other, and a front side surface of the base wall, and mating with a counterpart housing A peripheral wall, and a housing having
A winding portion protruding into the peripheral wall;
And a flat circuit pair of holes is et spaced longitudinally containing long holes to fit the pair of convex portions,
The winding part is composed of an elastic body that biases the flat circuit body in a protruding direction,
The flat circuit body fitted in one of the convex portions is inserted through the through hole and is stretched along the winding portion, and is inserted through the through hole again, and the flat circuit body is pulled in the state where the flat circuit body is pulled. The flat circuit assembly structure, wherein the elongated hole is hooked on the other convex portion.   2. The elastic device according to claim 1, further comprising an elastic plug portion that contacts the end portion of the winding portion on the base wall side and closes the through hole, and the plug portion has a cross-sectional area larger than that of the through hole. The flat circuit assembly structure described.   The flat circuit body assembly structure according to claim 2, wherein a rib is provided on the base wall so as to surround the through hole and the pair of convex portions, and silicone is poured into the rib. . A collar is provided around the winding part,
A pair of slits for inserting a flat circuit body is provided on both sides of the winding portion in the flange portion,
The flat circuit assembly structure according to claim 1, wherein the flange portion is in contact with a front side surface of the base wall.

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