JP2012186047A - Connector connection structure of flat-type cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a production process while keeping good characteristics of immunity and unnecessary radiation.SOLUTION: A tip 22b of a reinforcing wire 22 is inserted between an outer periphery of a fixing sleeve 5b projecting at a rear end of a coaxial connector 10 and an inner periphery of a gripping part 6b of a crimp sleeve 6 fitted with outside of a flat-type cable 11. While an excessive length part 22c formed by loosening the reinforcing wire 22 is provided between the tip 22b and a base part 22a of the reinforcing wire 22 exposed at an end face portion of an external insulator 23 of the flat-type cable 11, the crimp sleeve 6 is moved to and fitted with outside of the fixing sleeve 5b. The gripping part 6b is deformed by a fastening operation, so that the coaxial connector 10 is integrally fastened to an end of the flat-type cable 11.

Description

The present invention relates to a coaxial connector provided at the tip of a flat cable, and more particularly to a connection structure between the flat cable and the connector.

A coaxial connector such as a coaxial plug connector or a coaxial jack connector is provided at the end of a coaxial cable in order to form a transmission path by mechanically joining between coaxial cables and between the coaxial cable and various devices. As a type of the coaxial cable connected to this connector, not only a coaxial cable having a general cross-sectional shape (for example, a 5C cable) used in a television joint reception system but also an extremely fine round coaxial cable is used. Covered with a flat cable or sheet cable sandwiched by a sheet of tape-like covering material (for example, a sheet material made of a pair of aluminum laminate films) or an external insulator made of a synthetic resin material so that the cross-sectional shape becomes a substantially rectangular shape A flat cable having a flat cross section is connected.

The reason for using such a flat cable is that a high-frequency signal from an antenna installed outdoors is drawn indoors using a coaxial cable. This is to enable wiring. That is, for example, if a cable repeater is configured by attaching coaxial connectors to both ends of the flat cable, the flat cable can be routed along the window frame, so that the building is not damaged. In addition, the high-frequency transmission line can be easily drawn indoors from the outdoors.

As a connection structure between the coaxial connector and the flat cable in such a cable repeater, a metal cylindrical housing is provided at the rear end of the metal connector body, and the slit provided at the bottom of the rear end of the housing is flat. A flat cable connector connection structure has been proposed in which a cable penetrates and the tip of the flat cable is connected to a connection terminal provided in the connector body. According to this connection structure, in the housing, a substrate having a grounding body is arranged in the axial direction of the housing, the front end of the grounding body is connected to the main body, and a ground plate is connected to the rear end. The ground plate is configured to be in contact with the bottom portion in parallel with the slit, thereby reducing noise radio waves emitted from the coaxial connector to the outside.
(For example, see Patent Document 1)

Further, as a different example of the cable repeater, a coaxial connector portion having a male connector formed with a male screw portion so that the coaxial connector connected to the flat cable can be attached to a wall surface of a building or the like, There has been proposed one provided with a coaxial connector comprising a box-shaped main body portion provided integrally with the coaxial connector portion and provided with an attachment portion for wall surface attachment. The main body portion is formed using a conductive material so as to have a box shape with one side open and a space inside, and the flat cable and the coaxial connector portion are connected in the main body portion.
According to this coaxial connector, the cable repeater can be connected to an arbitrary part in the vicinity of the window frame by inserting a wall surface mounting screw into a screw insertion hole formed in the mounting portion and screwing the wall surface mounting screw into the wall surface. It can be easily attached to a position (for example, a mounting surface such as a wall surface of a building).

In this cable repeater, in order to facilitate the wiring of the flat cable along the attachment surface of the window frame or the like, the flat cable is flat with respect to the wall surface or the window frame with the coaxial connector attached to the wall surface or the like. It is desirable that the planes are arranged in parallel. For this reason, a grounding metal fitting for holding the grounding portion of the flat cable provided inside the main body and a connection board for connecting the center conductor of the flat cable and the center contact of the coaxial connector portion include the coaxial connector on the wall surface or the like. By attaching the flat cable to the grounding bracket and the connection board, the flat cable can be attached to the mounting surface. They are always arranged in parallel.

When the assembly of the flat cable is completed, the O-ring is fitted into the O-ring insertion recess formed around the opening surface of the main body, and the conductive back cover is fitted thereon. Furthermore, since the guide part provided in the main body part into which the flat cable is drawn is filled with a conductive sealing material, not only immunity and unnecessary radiation can be obtained, but also the inside of the main body part is airtight. It has a configuration that can prevent water and moisture from entering the space.
(For example, see Patent Document 2)

JP 2008-258018 A JP 2000-003766 A

However, according to the flat cable connector connection of Patent Document 1, in order to improve the shielding performance, a ground plate is provided between the grounding body of the substrate and the bottom of the metal cylindrical housing, and the grounding is performed via the ground plate. The body and the housing are connected, and the ground plate and the housing are connected by elastic contact. Therefore, in order to allow a high-frequency signal to flow satisfactorily through the ground plate, the contact state between the ground plate and the housing must be maintained well over a long period of use. In order to obtain stable performance and high reliability, such as housing surface treatment and ground plate pressing conditions, high-accuracy design is required, resulting in high product costs. .

In addition, the structure in which the grounding body of the board and the earth plate are integrally fastened and fixed by caulking with a grommet, and a high-frequency connection with each other is influenced by the surface condition of the grounding body of the board, There was a problem that it could not be said to be a highly reliable fastening structure because it was greatly affected by variations in caulking conditions.

In addition, in addition to rigid members such as the ground plate and the substrate, and a structure in which a flexible member such as an aluminum laminate film of a flat cable is integrally fastened and fixed, the caulking state due to the eyelet becomes weak due to secular change, Aside from mechanical connection, there was also a problem that it was difficult to maintain a good connection state at high frequencies in the future. In particular, there is a big problem when it is used for a coaxial connector that requires transmission of a wideband signal from the frequency band of digital terrestrial broadcasting to the intermediate frequency band of satellite broadcasting.

In addition, since the connector body and the grounding body of the board, and the grounding body of the board and the reinforcing wire of the flat cable are connected by soldering, it is necessary to connect members having different thermal efficiencies. Will be up. In addition, since soldering work is required in a narrow space, it was difficult to assemble and it was thought that the assembly could vary.

On the other hand, according to the cable repeater of Patent Document 2, the method of press-fitting the back cover into the opening surface of the main body is performed by applying the force applied to the back cover during press-fitting, variation in the size of the back cover, There has been a problem that it is easily influenced by the state of the end surface of the abutting opening surface and the finished dimensions. In other words, although the method of closing the space by press-fitting can be performed easily, not only does it achieve a waterproof structure, but also there are no variations in immunity and unnecessary radiation, and in order to realize the characteristics required for the product. However, there was a problem that the design difficulty related to optimizing the press-fitting of the back cover was high, and there was an extra cost for increasing the processing accuracy of the parts.

In order to prevent the filled sealant from flowing out, the method of filling the guide with conductive sealant must store the mechanism for a certain period of time so that the mechanism does not move until the sealant is completely dry. There was a problem in the production process. Furthermore, if the temperature control of the ambient temperature is not performed correctly, the mechanism filled with the sealing material will change in atmospheric pressure between the air pressure in the space inside the main body and the external pressure, and the sealing material will be drawn into the main body. There is also a problem that the sealing effect by the sealing material is impaired in severe cases, such as when the air in the main body is released to the outside. For this reason, production using sealing materials has the problem that it is difficult to handle in the production process, resulting in increased product costs.
Furthermore, the configuration in which the coaxial connector portion and the main body portion are formed by using a conductive material (for example, aluminum die-casting) integrally forms the attachment portion for wall surface attachment, and thus the weight of the coaxial plug connector is heavy. There was also a problem that said.

Therefore, in the present application, in order to solve the above-described problems in the connection structure between the flat cable and the coaxial connector,
The purpose is to provide a flat cable connector connection structure that is easy to assemble and provides stable quality.
Another object is to provide a flat cable connector connection structure with good electromagnetic shielding.
Another object is to provide a flat cable connector connection structure with good high frequency characteristics.
Another object is to provide a highly reliable flat cable connector connection structure that can withstand long-term use.

In order to solve the above-mentioned problems, the invention of claim 1 comprises a center contact used by connecting to the end portion of the center conductor of the cable, and a coaxial connector for holding the center contact on the center axis. The cable is inserted inward from an insertion hole formed in the rear end portion, and is connected to the central conductor end portion of the cable and the central contact, and is held by the fixing means to the coaxial end portion of the cable. In the connector connection structure configured to fix the connector integrally,
The cable is a flat cable in which a coaxial line and a reinforcing wire provided along the coaxial line are covered with an external insulator made of a synthetic resin material so that the cross-sectional shape is substantially rectangular. And the end of the flat cable is formed so that the central conductor, the inner insulator, and the outer conductor of the coaxial line are exposed in that order in addition to the reinforcing wire. Is equipped with a plug terminal for connection with a jack terminal formed at one end of the central contact,
The adhering means is mounted in a state of being externally fitted to the flat cable, and includes a crimp sleeve for fixing the flat cable to the coaxial connector,
On the other hand, the coaxial connector is a cylindrical member provided so as to protrude from the hole edge of the insertion hole and integrally formed so as to be concentric with the axis of the coaxial connector, A fixed sleeve having an inner diameter sufficient to receive the coaxial line, the outer diameter of which is a dimension that allows the crimp sleeve to be fitted;
The end of the coaxial line to which the plug terminal is assembled is inserted into the coaxial connector from the fixing sleeve, the electrical connection between the plug terminal and the jack terminal, and the outer conductor of the coaxial line The crimping sleeve is electrically connected to the fixing sleeve, and the crimping sleeve is inserted between the outer peripheral surface of the fixing sleeve and the inner circumferential surface of the crimping sleeve with the reinforcing wire exposed from the flat cable. The coaxial connector is integrally fixed to the end portion of the flat cable by being externally fitted to the fixed sleeve and deformed by a pressing operation.

The invention of claim 2 is the flat cable connector connecting structure according to claim 1, wherein at least a cylindrical member made of a conductive material having a front side terminated by a terminal end and a rear side opened by an opening, The coaxial line has an inner diameter substantially equal to or slightly smaller than the outer diameter of the exposed portion of the outer conductor, and a cylindrical peripheral wall is formed with a slit parallel to the axial direction of the coaxial line, and At the center position of the end portion, a cylindrical holder having a through-hole so that the portion where the inner insulator of the coaxial line is exposed can be inserted, and part or all of the portion where the outer conductor of the coaxial line is exposed. It is fitted to accept and hold,
An end of the coaxial line to which the cylindrical holder and the plug terminal are assembled is inserted into the coaxial connector from the fixing sleeve, and the plug terminal and the jack terminal are electrically connected, and the cylinder An electrical connection between the outer conductor and the fixing sleeve via a holding member, and a reinforcing wire exposed from the flat cable is provided between the outer peripheral surface of the fixing sleeve and the inner peripheral surface of the crimping sleeve. The crimping sleeve is externally fitted to the fixed sleeve in the inserted state, and is deformed by a pressing operation, whereby the coaxial connector is integrally fixed to the end portion of the flat cable.

According to a third aspect of the present invention, there is provided the flat cable connector connection structure according to any one of the first and second aspects, wherein the insertion is performed between the outer peripheral surface of the fixing sleeve and the inner peripheral surface of the crimping sleeve. An extra length portion formed by loosening the reinforcing wire is provided between the fixed end portion of the reinforcing wire and the base portion of the reinforcing wire exposed at the end surface portion of the external insulator. In this state, the coaxial connector is integrally fixed to the end portion of the flat cable by fitting the crimp sleeve to the fixed sleeve and deforming it by a pressing operation.

According to the first and second aspects of the invention, it is possible to provide a connector connection structure for a flat cable having good high-frequency characteristics and good electromagnetic shielding properties.

According to the second aspect of the present invention, when the flat cable end formed in a flat shape is fixed to the coaxial connector, the relative positional relationship between the coaxial connector and the flat cable end is determined. Assembly can be done without strict attention. In other words, unlike a round coaxial cable, even if the outer shape of the flat cable is directional because the cable is flat, the mounting direction of the flat cable after the pressing operation of the crimp sleeve is changed. This is because it can be easily corrected. For this reason, it is possible to easily eliminate variations in assembly, and to provide products of uniform quality such as the package appearance at the time of product shipment (for example, the flat cable direction and the coaxial connector mounting direction are all aligned). Can do.

Further, for example, when the coaxial connector has a two-plane width composed of a pair of planes, the coaxial connector can be oriented, and the mounting direction of the flat cable is determined so as to correspond to the directionality. In such a case, since the mounting direction of the flat cable can be easily corrected after the pressing operation, it is not necessary to precisely position the coaxial plug connector and the flat cable in the pressing operation. Therefore, the production process can be simplified and the cost of the product can be reduced.

It is a figure for demonstrating the connection structure of the coaxial connector and flat cable of this invention, and is the exploded sectional view seen from the upper surface. It is the figure which made the cross section into a part for explaining the connection structure of the coaxial connector and flat cable of the present invention, and (a) is a top view before assembling, (b) is a top view at the time of completion of assembling. BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which made the cross section the part for demonstrating the connection structure of the coaxial connector of this invention, and a flat cable, (a) is for demonstrating the fixing | fixed part of the coaxial connector and flat cable at the time of an assembly completion Side view, (b) is a cross-sectional view seen from BB ′. It is a figure for demonstrating the waterproof structure with respect to the connection structure of the coaxial connector and flat cable of this invention, and is the side view which made a part the cross section. It is a different Example of a coaxial connector, (a) is a top view, (b) is a side view. It is a figure for demonstrating the cable repeater which employ | adopted the connection structure of the coaxial connector and flat cable of this invention, (a) is a partial top view, (b) is the expanded cross section seen from CC 'line FIG. It is the schematic for demonstrating the usage method of a cable repeater.

In describing the connector connection structure of the flat cable according to the present invention, the coaxial connector according to the present invention and the coaxial cable connected to the coaxial connector will be described in detail with reference to FIGS. FIG. 1 is a view for explaining a connection structure between a coaxial connector and a flat cable according to the present invention, and is an exploded cross-sectional view as seen from the top. 2A and 2B are cross-sectional views illustrating a connection structure between a coaxial connector and a flat cable according to the present invention. FIG. 2A is a top view before assembly, and FIG. 2B is a top view when assembly is completed. It is. In these drawings, the reference numeral 10 indicates a coaxial plug connector which is an embodiment of the coaxial connector, and the reference numeral 11 indicates a flat cable 11.

In the following description, directions are described based on the state shown in the top view of FIG. 1 with respect to the front-rear direction, and unless otherwise specified, in the state of being arranged as shown in FIG. The left side of the figure is the front or the front side, and the right side of the figure is the back or the rear side. In addition, the vertical direction is based on the state shown in the side view of FIG. 3, and the upper side of the figure is the upper side in the state of being arranged as shown in FIG. 3 unless otherwise specified. The lower side is the lower side.

First, the flat cable 11 will be described. The flat cable 11 according to the present invention has a coaxial line 21 and a reinforcing wire 22 provided along the coaxial line 21 with an external insulator 23 made of a synthetic resin material and has a substantially rectangular cross-sectional shape. (See the cross-sectional view taken along the line AA ′ in FIG. 1). In the embodiment of the present invention, the end portion of the flat cable 11 is exposed so that the central conductor 21a, the inner insulator 21b, and the outer conductor 21c of the coaxial line 21 are exposed in that order in addition to the reinforcing wire 22. Stepped to a predetermined length.
In addition, although the said reinforcement wire 22 in the Example of this invention is comprised from the twisted wire of the metal thin wire, you may comprise a reinforcement wire with a single wire.

Furthermore, in an embodiment of the present invention, a cylindrical body 21d is fitted on the exposed outer conductor 21c of the coaxial line 21, and an end portion of the outer conductor 21c projects from the front side of the cylindrical body 21d. The overlapped portion 21e of the end portion of the outer conductor 21c and the cylindrical body 21d is formed by folding back the back portion so as to cover the cylindrical body 21d.
In the embodiment of the present invention, an example in which the cylindrical body 21d is provided is shown, but the cylindrical body 21d may be omitted.

Further, a cylindrical holder 14 is provided at the end of the coaxial line 21 so as to be fitted over the overlapping portion 21e. The cylindrical holder 14 according to the embodiment of the present invention is a cylindrical member made of a conductive material that is terminated at least at the front side by a termination portion 14a and opened at the rear side by an opening portion 14b. The outer conductor 21c has an inner diameter that is substantially the same as or slightly smaller than the outer diameter of the exposed portion (the overlapping portion 21e in the embodiment), and the cylindrical peripheral wall 14c has a slit parallel to the axial direction of the coaxial line 21. 14d is formed. Further, on the inner surface of the cylindrical peripheral wall 14c, locking means 14f made of, for example, a female screw or the like is formed. The locking means 14f is configured so as to prevent the coaxial line 21 from being removed from the cylindrical holder 14 by overlapping with the outer conductor 21c, but not to prevent the coaxial line 21 from rotating. .

Furthermore, a through hole 14e having an inner diameter is formed at the center position of the terminal end portion 14a so that the exposed portion of the inner insulator 21b of the coaxial line 21 can be inserted. While exposing the central conductor 21a and the inner insulator 21b from the hole 14e, a part or all of the portion (the overlapping portion 21e in the embodiment) where the outer conductor 21c of the coaxial line 21 is exposed is received from the opening 14b. Mounted to hold.

When the attachment of the cylindrical holder 14 to the end of the coaxial line 21 is completed, the plug terminal 13 is fixed to the end of the center conductor 21a by means such as soldering and insulated from the plug terminal 13. An insulating ring 12 made of a material is attached.

Furthermore, a crimping sleeve 6 for fixing the flat cable 11 to the coaxial plug connector 10 is attached to the flat cable 11 in a state of being externally fitted to the flat cable 11. This crimping sleeve 6 is a cylindrical sleeve provided so that a large-diameter clamping part 6b located on the front side and a small-diameter extraction part 6a located on the rear side are connected, and a tool or the like was used. It is made of a material that can be easily deformed by a pressing operation. Further, an engaging means 6d made of, for example, a female screw may be formed at least on the inner peripheral surface of the clamping part 6b. The crimp sleeve 6 is an example of a fixing means described in claims.

The above-described members are assembled to the flat cable 11 to form the flat cable end portion 11A shown in the right view of FIG.

Next, the coaxial plug connector 10 will be described. In the following description, the coaxial connector plug 10 is used as an embodiment of the connector. However, the present invention is not limited to this embodiment, and a coaxial jack connector may be used. The coaxial plug connector 10 or the coaxial jack connector is the coaxial connector recited in the claims.
The coaxial plug connector 10 according to the present invention includes at least a cylindrical connector body 2 having a communication hole 2a formed so as to penetrate the inside, and the center of the communication hole 2a in the cylindrical connector body 2 A central contact 3 provided on the shaft, a cylindrical holder 4 for holding and fixing the central contact 3 on the central axis of the cylindrical connector body 2, and the cylindrical connector body 2 A cylindrical fixing body 5 that is mounted on the opening 2d side formed on the rear end side and includes a cylindrical fixing sleeve 5b for receiving and fixing the end of the coaxial line 21. .

The cylindrical connector main body 2 is formed by molding a conductive material into a cylindrical shape, and a communication hole 2 a penetrating the front and rear of the cylindrical connector main body 2 is formed inside. The outer peripheral surface of the front side has a coaxial connector attached to the end of a round coaxial cable (not shown, for example, a coaxial cable for transmitting a high-frequency signal from an antenna installed outdoors). A male screw portion 2b into which the female screw is screwed is formed. Further, a locking groove 2c provided along the direction parallel to the central axis of the tubular connector body 2 and a tubular connector body 2 are provided at an intermediate position on the outer peripheral surface of the tubular connector body 2 of the present invention. One or a plurality of locking grooves 2f are provided so as to be along a direction parallel to a line orthogonal to the central axis.

Another embodiment of the cylindrical connector body is indicated by 200 in FIG. The difference between the cylindrical connector main body 200 and the cylindrical connector main body 2 is that a pair of planes 2g, which face each other in parallel with each other at a position following the male screw portion 2b provided in the cylindrical connector main body 200. By providing 2 g, the cylindrical connector body 200 has a two-face width. The width of the two surfaces is determined by inserting a tool such as a spanner when the male screw of the coaxial connector attached to the end of the round coaxial cable is screwed into the male screw portion 2b. It can be firmly screwed together.

As shown in the top view of FIG. 5 (a), the plane widths 2g and 2g are formed in the vertical direction when the coaxial plug connector 10 is viewed from directly above (see FIG. 5A). It is desirable that they are formed so as to face each other in a parallel state from the front to the back. That is, considering that the flat cable 11 is wired along an attachment surface such as a wall surface or an attachment surface such as a window frame, the flat surface 11a of the flat cable 11 is parallel to the attachment surface or attachment surface. This is because the flat surfaces 2g and 2g are directed in the vertical direction, so that the use of a tool such as a spanner can be facilitated.

The center contact 3 is a spring-type jack terminal formed of a metal elastic material that accepts and connects the center conductor of the coaxial connector provided at the front end of the above-described round coaxial cable provided on the front side. 3a and a plug terminal 13 provided on the rear side and integrally provided with the jack terminal 3a and connected to the end of the central conductor 21a of the coaxial line 21 constituting the flat cable 11 is received and connected. And a pin type jack terminal 3b made of a metallic material.

Further, the integrally formed jack terminals 3a and 3b are fitted in the communication hole 2a of the cylindrical contact body 2 and hold and fix the center contact 3 on the central axis of the communication hole 2a. In the embodiment of the present invention, the jack terminals 3a and 3b and the center contact holding body 3d constitute the center contact 3 and are held by the center contact holding body 3d made of an insulating material. Yes. Incidentally, reference numeral 3c in the figure denotes a slot formed to facilitate the reception of the plug terminal 13 connected to the jack terminal 3b and to obtain an urging force for clamping the plug terminal 13. Further, 3e in the drawing is a waterproof O-ring, which is provided to waterproof the overlapping portion with the inner peripheral surface of the continuous hole 4a of the cylindrical holder 4 to be described later.

The cylindrical holding body 4 is provided with a continuous hole 4a having a step at an intermediate position, which is formed so as to receive a part of the rear side of the center contact 3 from the front side. Further, from the rear side, there is formed an insertion hole 4b which is formed so as to be connected to the connecting hole 4a and has an inner diameter enough to receive the plug terminal 13. The cylindrical holder 4 holds and fixes the center contact 3 on the central axis of the cylindrical connector body 2 inside the communication hole 2 a of the cylindrical connector body 2. In the figure, 4c and 4d are waterproof O-rings, the O-ring 4c is the overlapping portion with the outer peripheral surface of the center contact holding body 3d, and the O-ring 4d is the communication hole 2a of the cylindrical contact body 2. This is provided for waterproofing the overlapping portion with the inner peripheral surface.

The cylindrical fixed body 5 is a cylindrical member made of a conductive material, and can be inserted into and removed from the communication hole 2 a formed in the cylindrical connector body 2 from the rear side of the cylindrical connector body 2. And a cylindrical fixing sleeve 5b integrally provided so as to protrude rearward from the fixing portion 5a.

Further, on the central axis of the fixing portion 5a and the fixing sleeve 5b, there is a hole penetrating the cylindrical fixing body 5 in the front-rear direction, and is coaxial with the axis of the coaxial line 11a constituting the flat cable 11 As described above, the guide hole 5c having an inner diameter sufficient to receive the cylindrical holding body 14 attached to at least the end portion of the coaxial line 21 while being in sliding contact with the flat cable end portion 11A. A storage hole 5d in which the insulating ring 12 inserted into the plug terminal 13 is stored is formed in a row. Further, the protruding dimension and the outer diameter of the fixing sleeve 5b are formed such that the fixing portion 6a of the crimping sleeve 6 can be externally fitted and the cylindrical holder 14 can be accommodated. In the embodiment in which the cylindrical holding body 14 is not used, the inner diameter of the guide hole 5c of the fixed sleeve 5 may be formed so as to receive the outer conductor 21c of the coaxial line 21.

Further, a press-fit portion 5e is formed on the rear side of the fixed portion 5a, and the press-fit portion 5e is press-fitted and fixed to the rear opening 2d of the cylindrical connector body 2. . The press-fitting portion 5e is formed with a knurl 5h and the like as shown in the left drawing of FIG. Further, 5f in the figure is a waterproof O-ring that waterproofs the overlapping portion of the cylindrical contact body 2 and the inner peripheral surface of the communication hole 2a.

The center contact 3 and the cylindrical holder 4 described above are sequentially assembled from the front side in the communication hole 2 a of the cylindrical connector body 2. When the assembly of these members is completed, the cylindrical fixing member 5 is inserted from the opening 2d on the rear side of the cylindrical connector body 2. Then, the press-fitting portion 5e is press-fitted into the inner peripheral surface of the opening 2d, and the peripheral edge 2e of the opening 2d is reduced inward so that it is shown in the left diagram of FIG. A coaxial plug connector 10 is formed.

Then, if the flat cable end portion 11A is inserted into the coaxial plug connector 10 thus configured from the guide hole 5c of the fixing sleeve 5b protruding from the rear side of the coaxial plug connector 10. The plug terminal 13 is electrically connected by being inserted into the jack terminal 3b of the center contact 3. Further, the outer peripheral surface of the cylindrical peripheral wall 14c in the cylindrical holder 14 and the inner peripheral surface of the fixing sleeve 5b are in sliding contact with each other, so that the outer conductor 21c of the coaxial line 21 and the cylindrical connector body 2 is electrically connected through the cylindrical fixed body 5. At this time, since the insulating ring 12 is housed in the housing hole 5d, the axis of the plug terminal 13 does not deviate from the axis of the coaxial plug connector 10 and is short-circuited to the cylindrical fixed body 5. Can be installed without any. The cylindrical holder 14 and the fixing sleeve 5b are connected in a slidable contact state while maintaining a long distance in the central axis direction (specifically, a distance enough to accommodate the cylindrical holder 14). Therefore, good characteristics can be obtained for both immunity and unnecessary radiation. Further, the cylindrical holder 14 in the fixed sleeve 5b is not restricted by insertion / extraction in the central axis direction and rotation in the circumferential direction.

After the flat cable end portion 11A is assembled to the coaxial plug connector 10, the crimp sleeve 6 that is externally fitted to the flat cable 11 as a fixing means for the flat cable 11 is shown in FIG. It is moved in the direction of arrow F shown in FIG. 2 (b) and is externally fitted to the fixed sleeve 5b. At this time, as shown in FIG. 2B, the tip 22b of the reinforcing wire 22 is placed between the outer peripheral surface of the fixed sleeve 5b and the inner peripheral surface of the clamping portion 6b of the crimping sleeve 6. And the front opening end 6c of the crimping sleeve 6 is mounted so as to come into contact with the rear end face 5g of the fixing portion 5a of the cylindrical fixing body 5.

Then, when the crimping sleeve 6 is assembled to the fixed sleeve 5b in this way, the clamping sleeve 6 is deformed by a pressing operation using a tool or the like to deform the crimping sleeve 6 into the fixing sleeve 5b. The flat cable 11 is connected to the coaxial plug connector because the distal end portion 22b of the reinforcing wire 22 is clamped and held between the crimp sleeve 6 and the fixed sleeve 5b. 10 is fixed. In addition, the clamping portion 6b and the fixing sleeve 5b of the crimping sleeve 6 are thereby clamped, and due to the presence of the engaging means 6d formed on the inner peripheral surface of the clamping portion 6b, the fixing sleeve 5b Since the shielding property with the sleeve 6 is kept good, further excellent immunity and unnecessary radiation characteristics can be obtained. In the embodiment of the present invention, the clamping portion 6b is fixed by being deformed into a substantially hexagonal cross section by a pressing operation, but is not limited to this embodiment as long as it can be pressed. .

Here, the fixing method of the reinforcing wire 22 will be described in more detail with reference to FIG. FIG. 3 is a partial cross-sectional view of the connection structure of the coaxial plug connector 10 and the flat cable end portion 11A in the state of FIG. 2B viewed from the side, and (a) is a flat cable when assembly is completed. The side view for demonstrating the fixing | fixed part of a connector and (b) is sectional drawing seen from BB '.

In the embodiment of the present invention, when the reinforcing wire 22 is fixed, the base portion 22a of the reinforcing wire 22 exposed at the end surface portion of the external insulator 23 of the flat cable 11 and the reinforcing wire 22 The crimping sleeve 6 is configured to be pressed against the fixed sleeve 5b in a state in which an extra length portion 22c formed by loosening the reinforcing wire is provided between the distal end portion 22b. Yes.
In addition, the said front-end | tip part 22b is a fixed end part of the reinforcing wire 22 described in a claim.

That is, in the embodiment of the present invention, when the coaxial plug connector 10 and the flat cable end portion 11A are fixed, the distal end portion 22b which is the fixed end portion of the reinforcing wire 22 is connected to the outer peripheral surface of the fixing sleeve 5b. At the time of fixing between the crimping sleeve 6 and the inner peripheral surface of the sandwiching portion 6a, the extra length portion 22c of the reinforcing wire 22 is fixed in the existing state. The flat cable 11 on the rear side from the vicinity of the portion 22a can be rotated in the lead-out portion 6a of the crimping sleeve 6 within the length of the extra length portion 22c.

Further, as already described in detail in the embodiment of the present invention, the coaxial line 21 constituting the flat cable 11 is “not prevented from being pulled out by the presence of the cylindrical holding body 14. , And does not prevent the rotation of the coaxial line 21, and “the cylindrical holding body 14 restricts insertion and removal in the central axis direction and rotation in the circumferential direction in the fixed sleeve 5 b. Since the end portion 22b of the reinforcing wire 22 is between the outer peripheral surface of the fixing sleeve 5b and the inner peripheral surface of the fixing portion 6a of the crimping sleeve 6, the extra length portion of the reinforcing wire 22 By being fixed in a state in which 22c is present, at least within the length of the surplus length portion 22c, the entire flat cable end portion 11A is placed inside the plug connector 10 and inside the lead-out portion 6a. smell So that is rotatably configured.

That is, according to the embodiment of the present invention, when the flat cable end portion 11A formed in a flat shape is fixed to the cylindrical plug connector 10 formed in a cylindrical shape, the coaxial plug connector 10 is fixed. And the flat cable end portion 11A can be assembled without paying strict attention to the relative positional relationship. That is, unlike the round coaxial cable, even if the outer shape of the flat cable 11 is directional because the cable is flat, the flat cable 11 is attached after the pressing operation of the crimp sleeve 6. This is because the direction can be easily corrected. For this reason, it is possible to easily eliminate variations in assembly, and to provide products of uniform quality such as the package appearance at the time of product shipment (for example, the flat cable direction and the coaxial connector mounting direction are all aligned). Can do.

Further, for example, like the coaxial plug connector 100 shown in FIG. 5, the coaxial plug connector 100 can be directional by providing a two-surface width composed of a pair of planes 2g and 2g. In the case where it is necessary to determine the mounting direction of the flat cable 11 so as to correspond to the characteristics, the mounting direction of the flat cable 11 can be easily corrected after the pressing operation. Since it is not necessary to precisely position the connector 100 and the flat cable 11, the production process can be simplified and the cost of the product can be reduced.

Next, the waterproof structure of the coaxial plug connector 10 and the flat cable end portion 11A assembled in this way will be described with reference to FIGS. In these drawings, FIG. 4 is a view for explaining a waterproof structure for the connection structure of the coaxial plug connector 10 and the flat cable 11 according to the present invention, and is a side view partly in section. In the embodiment of the present invention, the cable to be used is the flat cable 11, and therefore, as shown in FIG. 3, the lead-out portion 6 a of the crimping sleeve 6 is dimensioned in the longitudinal direction of the flat cable 11. Is formed to have an inner diameter that can be inserted, a gap is formed in the vertical direction of the flat surface 11a of the flat cable 11 in the lead-out portion 6a. Enters inside through the gap of the lead-out portion 6a.

Therefore, in the embodiment of the present invention, the abutting portion between the rear end surface 5g of the fixing portion 5a and the front opening end 6c of the crimping sleeve 6 in the tubular stationary body 5, the lead-out portion 6a of the crimping sleeve 6 and the In order to make the gap formed between the flat cable 11 watertight, an adhesive made of a thermoplastic synthetic resin such as hot melt or rubber is provided on the inner surface around the contact portion and the lead-out portion 6a. The coated heat shrinkable tube is used for coating. In the embodiment of the present invention, since the outer diameter of the coaxial plug connector 10 and the outer diameter of the crimp sleeve 6a and the subsequent outer diameters are greatly different, two types of heat shrinkable tubes 51 and 52 having different inner diameters are partly provided. It is fastened and fixed in such a way as to polymerize. In the figure, 51a and 52a indicate the presence of the adhesive.

In the embodiment of the present invention, the flat cable end portion 11A is rotatable with respect to the coaxial plug connector 10 due to the presence of the extra length portion 22c until it is fastened by the heat shrinkable tube. The relative positional relationship between the coaxial plug connector 10 and the flat cable end portion 11A can be freely modified. However, if the crimp sleeve 6 and the flat cable 11 are fastened and fixed by the heat-shrinkable tube 52, the flat cable end 11A cannot rotate with respect to the coaxial plug connector 10. The relative positional relationship between the coaxial plug connector 10 and the flat cable end portion 11A is fixed.

That is, it is necessary to determine the relative positional relationship between the coaxial plug connector 10 and the flat cable end portion 11A during the fastening operation by the heat shrinkable tubes 51 and 52. Specifically, as shown in FIG. 5, when the coaxial plug connector 100 is viewed from directly above, the planes 2g and 2g constituting the two-surface width are respectively in the vertical direction (from the front to the back in the figure). ) So that the flat surface 11a of the flat cable 11 is parallel to the mounting surface or the attached surface along which the flat cable 11 is disposed. The relative positional relationship between the plug connector 10 and the flat cable end portion 11A is determined.

Here, as a specific embodiment employing the flat cable connector connection structure of the present invention with reference to FIGS. 6 and 7, a cable repeater in which coaxial plug connectors 10 and 10 are attached to both ends of the flat cable 11 is used. Will be described. 6A and 6B are diagrams for explaining the cable relay 1 employing the connector connection structure of the flat cable 10 according to the present invention. FIG. 6A is a top view showing a part of the cable relay 1, and FIG. It is the expanded sectional view seen from CC 'line. FIG. 7 is a schematic view for explaining how to use the cable repeater 1.

This cable repeater 1 has a configuration in which the coaxial plug connector 10 is mounted on both ends of the flat cable 11 and enables wiring without providing a coaxial cable lead-in hole on the wall surface of the building. It is. The coaxial plug connector 10 provided in the cable repeater 1 has a decorative case 30 made of a synthetic resin material, as shown in the figure, at least on the male screw portion 2b and the two surfaces of the coaxial plug connector 10. It is integrally formed by molding with respect to a portion behind the planes 2g and 2g forming the width and a part of the flat cable 11, and the coaxial plug connector portion 1A. 1B is configured. In the embodiment of the present invention, one or a plurality of locking grooves 2c and 2f are formed on the outer peripheral surface of the cylindrical connector bodies 2 and 200 at the intermediate position. As shown in FIG. 6 (b), the locking grooves 2c and 2f are engaged with each other when the cylindrical connector body 2 or 200 and the decorative case 30 are molded. The tubular connector body 2 or 200 is prevented from being detached from the decorative case 30 or the tubular connector body 2 or 200 is rotated within the decorative case 30.

The decorative case 30 is provided with a wall mounting portion 31 so that the coaxial plug connector portions 1A and 1B can be mounted on the wall surface 40 of the building as a mounting surface. The cable relay 1 can be easily moved to an arbitrary position in the vicinity of the window frame 41 by inserting the wall mounting screw 33 through the screw insertion hole 32 formed in the portion 31 and screwing the wall mounting screw 33 into the wall 40. Can be attached to.

In this cable repeater 1, the flat cable 11 is attached with the coaxial plug connector portions 1A and 1B to the wall surface 40 or the like in order to facilitate the wiring of the flat cable 11 along the attached surface of the window frame 41 or the like. It is desirable that the flat surface 11 a of the mold cable 11 is arranged in parallel to the wall surface 40 and the window frame 41. On the other hand, as already described in detail, in the embodiment in which the cable repeater 1 is configured using the coaxial plug connector 100 having the directionality due to the two-surface width as shown in FIG. Since the positional relationship between the formation direction of the flat surfaces 2g and 2g constituting the surface width and the flat surface 11a of the flat cable 11 has already been determined, the decorative case 30 is connected to the coaxial plug connector 100 and the flat type. When the cable 11 is molded, the flat surface 11a of the flat cable 11 is simply disposed so that the flat surface 11a of the flat cable 11 faces in the horizontal direction. 41), it is not necessary to perform complicated alignment during molding, so that the production process can be simplified and the production cost can be reduced. That. In addition, since the width of the second mesh is arranged in a direction perpendicular to the mounting surface in this way, it is possible to easily accept a tool such as a spanner and to easily and reliably connect the connector of the round coaxial cable. Such an effect can be expected.

DESCRIPTION OF SYMBOLS 1 ... Cable repeater, 1A * 1B ... Coaxial plug connector part, 2 ... Cylindrical connector main body, 2a ... Communication hole, 2b ... Male screw part, 2c ... Locking groove, 2d ... Opening part, 2e ... Periphery, 2f ... Locking groove, 2g ... plane, 3 ... center contact, 3a ... jack terminal, 3b ... jack terminal, 3c ... slot, 3d ... center contact holder, 3e ... O-ring, 4 ... cylindrical holder, 4a ... continuous 4b ... insertion hole, 4c · 4d ... O-ring, 5 ... cylindrical fixed body, 5a ... fixed portion, 5b ... fixed sleeve, 5c ... guide hole, 5d ... housing hole, 5e ... press-fit portion, 5f ... O Ring, 5g ... rear end face, 5f ... knurl, 6 ... crimping sleeve, 6a ... drawer part, 6b ... clamping part, 6c ... open end, 10/100 ... coaxial plug connector, 11 ... flat cable, 11a ... flat plane , 12 ... Insulating ring, 13 ... Plug terminal DESCRIPTION OF SYMBOLS 14 ... Cylindrical holding body, 14a ... Terminal part, 14b ... Opening part, 14c ... Cylindrical peripheral wall, 14d ... Slotting, 14f ... Locking means, 14e ... Through-hole, 21 ... Coaxial track, 21a ... Center conductor, 21b ... Insulator, 21c ... External conductor, 21d ... Cylinder, 21e ... Polymerized part, 22 ... Reinforcing wire, 22a ... Original part, 22b ... Tip part, 22c ... Extra length part, 23 ... External insulator, 30 ... Make Case: 31 ... Mounting portion, 32 ... Screw insertion hole, 33 ... Wall mounting screw, 40 ... Wall surface, 41 ... Window frame, 51/52 ... Heat-shrinkable tube, 51a / 52a ... Adhesive, 100 ... Coaxial plug connector.

Claims (3)

A center contact used in connection with the center conductor end of the cable and a coaxial connector that holds the center contact on the center axis. The cable is inserted into the cable from an insertion hole formed at the rear end of the coaxial connector. A connector connecting structure configured to pass through and connect to the central conductor end of the cable and the central contact, and to fix the coaxial connector integrally to the end of the cable by holding means. In
The cable is a flat cable in which a coaxial line and a reinforcing wire provided along the coaxial line are covered with an external insulator made of a synthetic resin material so that the cross-sectional shape is substantially rectangular. And the end of the flat cable is formed so that the central conductor, the inner insulator, and the outer conductor of the coaxial line are exposed in that order in addition to the reinforcing wire. Is equipped with a plug terminal for connection with a jack terminal formed at one end of the central contact,
The adhering means is mounted in a state of being externally fitted to the flat cable, and includes a crimp sleeve for fixing the flat cable to the coaxial connector,
On the other hand, the coaxial connector is a cylindrical member provided so as to protrude from the hole edge of the insertion hole and integrally formed so as to be concentric with the axis of the coaxial connector, A fixed sleeve having an inner diameter sufficient to receive the coaxial line, the outer diameter of which is a dimension that allows the crimp sleeve to be fitted;
The end of the coaxial line to which the plug terminal is assembled is inserted into the coaxial connector from the fixing sleeve, the electrical connection between the plug terminal and the jack terminal, and the outer conductor of the coaxial line The crimping sleeve is electrically connected to the fixing sleeve, and the crimping sleeve is inserted between the outer peripheral surface of the fixing sleeve and the inner circumferential surface of the crimping sleeve with the reinforcing wire exposed from the flat cable. A flat cable connector connection structure, wherein the coaxial connector is integrally fixed to an end of the flat cable by being externally fitted to the fixing sleeve and deformed by a pressing operation. .
At least a cylindrical member made of a conductive material whose front side is terminated by a terminal end and whose rear side is opened by an opening, and has an inner diameter substantially the same as or slightly smaller than the outer diameter of the exposed portion of the outer conductor of the coaxial line The cylindrical peripheral wall is formed with a slit parallel to the axial direction of the coaxial line, and a portion where the internal insulator of the coaxial line is exposed can be inserted into the center position of the terminal portion. A cylindrical holder formed with a through-hole is installed to receive and hold part or all of the exposed portion of the outer conductor of the coaxial line;
An end of the coaxial line to which the cylindrical holder and the plug terminal are assembled is inserted into the coaxial connector from the fixing sleeve, and the plug terminal and the jack terminal are electrically connected, and the cylinder An electrical connection between the outer conductor and the fixing sleeve via a holding member, and a reinforcing wire exposed from the flat cable is provided between the outer peripheral surface of the fixing sleeve and the inner peripheral surface of the crimping sleeve. In the inserted state, the coaxial sleeve is externally fitted to the fixed sleeve, and is deformed by a pressing operation so that the coaxial connector is integrally fixed to an end portion of the flat cable. The connector connection structure for a flat cable according to claim 1.
  Between the fixed end of the reinforcing wire inserted between the outer peripheral surface of the fixing sleeve and the inner peripheral surface of the crimping sleeve, and the base portion of the reinforcing wire exposed at the end surface portion of the external insulator In the state where the extra length portion formed by loosening the reinforcing wire is provided, the crimp sleeve is externally fitted to the fixed sleeve, and is deformed by a pressing operation, whereby an end portion of the flat cable is obtained. The flat cable connector connection structure according to claim 1, wherein the coaxial connector is integrally fixed to a flat cable.

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