JP2009170187A - Connector with cord - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a connector with cord which is easy to assemble and in which the whole structure can be made small in size. <P>SOLUTION: The conductive connection portion 13 is fitted into and connected to a portion to be connected which is connected to an electronic device. An insulating base portion 17 of column shape covers the conductive connection portion 13 and supports this. The cord 15 is electrically connected to the conductive connection portion and is led out in slanted direction from the end part of the insulating base portion 17. An insulating cap portion 23 of cylindrical shape has a through-hole 25 at its side, covers the cord 15, is covered with the end part of the insulating base portion 17, and is fitted into the end part of the insulating base portion 17 with which the through-hole 25 is engaged. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a corded connector, for example, to an improvement in a corded connector such as a headphone, a microphone or the like used in a portable audio device and a corded plug connected to the audio device or the like.

  A connection cord extending from a headphone used for a portable audio device and a cord-attached plug for connecting the audio device are well known as shown in FIGS.

  That is, in such a plug with a cord, the insulating covering cord 3 is soldered and connected to one end of the elongated plug portion 1, and the connecting portion between the plug portion 1 and the cord 3 is molded into a column shape with an insulating synthetic resin, thereby insulating base portion. 5, and the outer periphery of each of the cord 3 and the insulating base 5 led out from the insulating base 5 in a direction transverse to the longitudinal direction of the plug portion 1 is a plug cap 7 made of a flexible insulating synthetic resin. It has a structure that is integrally covered.

  The insulating base portion 5 is formed by insert injection molding of the plug portion 1 and the connecting portion of the cord 3 from a synthetic resin such as polypropylene, and the plug cap 7 is insulated by a flexible synthetic resin such as polyvinyl chloride. The resin base 5 is directly molded with resin, or is molded as a separate part and fitted into the insulating base 5.

  A concave portion 9 is provided on the outer surface of the insulating base 5, a convex portion 11 is provided on the inner wall of the plug cap 7, and the concave portion 9 and the convex portion 11 are fitted by fitting the plug cap 7 to the insulating base 5. The fixing strength between the insulating base 5 and the plug cap 7 is maintained.

  Therefore, in such a plug with a cord, the connecting portion between the cord 3 and the plug portion 1 is covered with the insulating base portion 5, and the cord 3 led out in the lateral direction is integrated with the flexible plug cap 7. Therefore, even if the cord 3 is bent or pulled, local concentrated stress is hardly applied to the cord 3, and the cord 3 is hardly damaged. .

By the way, as this type of general technique, there is, for example, Patent Document 1 (Utility Model Registration No. 3003272).
Utility Model Registration No. 3003272

  However, in the plug with the cord described above, when the plug cap 7 is directly resin-molded with a flexible synthetic resin on the outer periphery of the insulating base portion 5, the plug cap 7 can be thinly molded to reduce the size as a whole. The softer the synthetic resin that forms the cap 7, the easier it is for burrs and shrinkage to occur on the exterior, and the defect rate increases. On the other hand, if the hardness of the material is increased, the bending performance of the cord deteriorates. There are difficulties.

  On the other hand, in the configuration in which the plug cap 7 is molded as a separate part with a flexible synthetic resin and fitted into the insulating base 5, the disadvantage of the configuration in which the plug cap 7 is directly resin-molded on the outer periphery of the plug portion 1 can be improved. If the concave portion 9 is not provided on the outer surface of the insulating base 5 and the convex portion 11 is not provided on the inner wall of the plug cap 7, the fixing strength is liable to be reduced, and the provision of the convex portion 11 makes it difficult to reduce the thickness of the plug cap 7. As a whole, there are problems that are difficult to reduce in size.

  Further, when the convex portion 11 is provided on the inner wall of the plug cap 7, it becomes difficult to remove the plug cap 7 from the molding die, and there are also disadvantages that the number of manufacturing steps is likely to increase and component defects are likely to occur.

  Recently, with the miniaturization of portable audio equipment, there has been a strong demand for miniaturization of plugs with cords, and there is room for improvement in productivity in the prior art, and it is easy to assemble and connect with cords that are easy to miniaturize. Ingredients are desired.

  The present invention has been made to solve such a problem, and an object thereof is to provide an inexpensive corded connector that is easy to assemble, has good productivity, and can be downsized in structure.

  In order to solve such a problem, a corded connector according to the present invention includes a conductive connection portion that is inserted and connected to a connected portion connected to an electronic instrument, and the conductive connection portion. A columnar insulating base that covers and supports a part of the insulating base, and a cord that is electrically connected to the conductive connection in the insulating base, and is connected from the end of the insulating base A cord drawn in an oblique direction with respect to the fitting direction axis, and a cylindrical insulating cap portion covering the cord and covering the end portion of the insulating base, the protruding side of the cord And an insertion hole in the vicinity of the opening, and the insertion hole includes a flexible insulating cap portion engaged with the insulating base.

  In addition, the insulating cap part is covered with the insertion hole through the end of the insulating base part in a state where the cord is inserted into the insertion hole from the insulating base part, and the peripheral part forming the insertion hole. Is engaged with the outer periphery of the insulating base.

  In the corded connector according to the present invention, the insulating cap portion may have a configuration in which the peripheral portion is engaged with a concave groove formed on the outer periphery of the insulating base portion.

  In the connector with a cord of the present invention, a configuration in which a chamfered and sloped surface is formed on the side surface of the insulating base opposite to the protruding side of the cord is also possible.

  In the corded connector according to the present invention, the insulating cap portion may have an end face whose opening is aligned with the slope of the insulating base portion.

  In such a corded connector according to the present invention, the conductive connection portion is covered with and supported by the columnar insulating base, and is connected to the conductive connecting portion and obliquely from the end of the insulating base. Cover the end of the insulating base with an insulating cap so as to cover the cord pulled out in the direction, and insert the through hole formed near the opening opposite to the protruding side of the cord into the insulating base. Since the flexible insulating cap portion is put on the end portion of the insulating base portion so as to be engaged, and the peripheral portion forming the insertion hole is engaged with the outer periphery of the insulating base portion. It is easy to assemble, has good productivity, can be downsized, and is easy to reduce costs.

  In the corded connector according to the present invention, in the configuration in which the insulating cap portion engages the peripheral edge portion with the groove formed on the outer periphery of the insulating base portion, the insulating cap portion is fixed to the insulating base portion. It is easy to improve the strength.

  In the corded connector according to the present invention, in the configuration in which the insulating base portion is chamfered on the side surface opposite to the protruding side of the cord to form an inclined surface, the insulating cap portion is easily covered with the insulating base portion, and assembly is facilitated. Even easier.

  In the corded connector according to the present invention, in the configuration in which the insulating cap portion has an end surface aligned with the slope of the insulating base portion at the opening, it is difficult to reduce the appearance quality.

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

  1 and 2 are a cross-sectional view and a front view showing an embodiment of a corded connector according to the present invention using a corded plug as an example.

  1 and 2, the plug portion 13 has a conductive first connection portion 13a, a second connection portion 13b, and a third connection portion 13c from one end portion (lower end portion in the figure). The first and second connection portions 13a and 13b are supported by the third connection portion 13c in an insulated state, and the inside of the hollow portion of the cylindrical third connection portion 13c is first and second. The connection portions 13a and 13b extend to the base portion (upper part in the figure) in a state of being non-contact or insulated from each other, and are connected to independent terminals (not shown) to form a conductive connection portion. There is also a configuration in which the second connecting portion 13b is omitted.

  The plug portion 13 is connected and used by being fitted into a jack (connected portion) of an electronic device (not shown) such as a portable audio device.

  Two core wires and coated conductors of the insulation coating cord 15 are connected to the terminal (not shown) of the plug portion 13 by a known method such as soldering, and the cord 15 is electrically connected to the first to third connection portions 13a to 13c. Connected.

  Since the configuration of the plug portion 13 itself and the connection configuration with the cord 15 are generally known in the art, detailed illustration is omitted.

  The other tip end side (upper end portion in the figure) of the plug portion 13 is insert injection molded so as to cover the connection portion with the cord 15 with an insulating synthetic resin such as polypropylene, for example, and a cylindrical insulating base portion 17 is formed. (See FIG. 3).

  The insulating base portion 17 is bent approximately 90 ° laterally with respect to the vertical axis or the fitting direction axis of the plug portion 13 and is slightly bent into an L shape, and the cord 15 is pulled out laterally from the bent portion. It is.

  As shown in FIGS. 1 and 4, the insulating base portion 17 has a concave groove (concave portion) 19 formed coaxially with the plug portion 13 at the base of the bent portion from which the cord 15 protrudes.

  The insulating base portion 17 has a side surface opposite to the protruding side of the cord 15 that is chamfered into a curved surface, and a tapered inclined surface 21 is formed on the upper side.

  The insulating cap portion 23 is molded into a cylindrical shape from a flexible synthetic resin such as polyvinyl chloride, and covers the end of the insulating base portion 17 while elastically covering the cord 15 protruding from the insulating base portion 17. Yes. The flexible synthetic resin used for the insulating cap part 23 is softer than the insulating base part 17, and preferably has a rubber hardness of approximately 60 degrees (softer as the number is smaller) or slightly smaller.

  The insulating cap portion 23 is opened on the side opposite to the protruding side of the cord 15, and an insertion hole 25 is formed in the vicinity of the opening portion, and a peripheral portion 27 that forms the insertion hole 25 is a recess in the insulating base portion 17. It is engaged with the groove 19.

  The inner diameter of the insertion hole 25 is slightly larger than the diameter of the inner bottom of the concave groove 19 so that the peripheral edge portion 27 is not easily detached from the concave groove 19 of the insulating base 17.

  In the insulating cap portion 23, the vicinity of the peripheral edge portion 27 is engaged with the groove 19 of the insulating base portion 17 and protrudes from the outer periphery of the insulating cap portion 23 so as to be in close contact with the insulating base portion 17. It is installed.

  The insulating cap portion 23 has a plurality of slits 29 formed in a cylindrical portion covering the cord 15 so that the insulating cap portion 23 can be easily bent and deformed according to the bending of the cord 15 and has a side surface opposite to the protruding side of the cord 15. It is chamfered into a curved surface and has a slope 31.

  Therefore, in a state where the insulating cap portion 23 is covered with the insulating base portion 17, the inclined surface 31 of the opening portion of the insulating cap portion 17 and the inclined surface 21 on the side surface side of the insulating base portion 17 are the same curved surface or inclined surface. It's all there.

  That is, the insertion hole 25 of the insulating cap portion 23 is inserted into the concave groove 19 shown in FIG. 1 through the upper portion of the insulating base portion 17, and in the process, the peripheral edge portion 27 is pulled to the left side in the drawing to expand. It is inserted while being opened and sliding on the slope 21. In other words, the insertion hole 25 is expanded while being elastically deformed, and the insulating cap portion 23 is covered.

  Such a plug with a cord according to the present invention, for example, as shown in FIG. 5, from the state where the cord 15 is inserted into the insulating base 17 through the insertion hole 25, the insulating cap portion 23 is connected to the insulating base 17. The cap is moved to the end (head), the insertion hole 25 is passed through the head of the insulating base 17, and the peripheral edge 27 of the insertion hole 25 is engaged with the groove 19 of the insulating base 17. The part 23 is assembled by covering the end of the insulating base 17.

  In this process, since the slope 21 of the insulating base 17 is tapered upward, the peripheral edge 27 of the insertion hole 25 is easy to come into contact with the side slope 21 of the insulating base 17 and is slightly expanded. However, it is easy to slide on the side slope 21 and engage with the concave groove 19.

  The corded plug according to the present invention configured as described above includes a plug portion (conductive connection portion) 13 that is inserted and connected to a connected portion connected to an electronic instrument, and the plug portion 13 includes: A cylindrical insulating base 17 that covers and supports a part of the insulating base 17 and a cord 15 that is electrically connected to the conductive connecting portion of the insulating base 17. A cord 15 drawn out from the end portion in a direction transverse to the fitting direction axis with the connected portion, and a cylindrical insulating cap portion 23 covering the cord 15 and covering the end portion of the insulating base portion 17 The side opposite to the projecting side of the cord 15 is opened, and an insertion hole 25 is formed in the vicinity of the opening, and the insertion hole 25 is engaged with the insulating base 17 so as to be flexible insulation. The cap part 23 is provided.

  Moreover, the insulating cap portion 23 is covered with the insertion hole 25 through the end portion of the insulating base 17 in a state where the cord 15 is inserted into the insertion hole 25 from the insulating base 17. A peripheral edge 27 forming the insertion hole 25 is configured to engage with a concave groove (recess) 19 on the outer periphery of the insulating base 17.

  Therefore, since the insulating cap portion 23 is covered so as to be partially fitted into the end portion of the insulating base portion 17, the assembly is easy and the productivity is good, and the overall structure can be downsized. Cost reduction is easy.

  Moreover, since it is not necessary to provide the convex part 11 etc. in the insulating cap part 23, the metal mold | die structure for the insulating cap part 23 shaping | molding is easy, the productivity of components improves, and the insulating cap part 23 Even if a soft synthetic resin is used, the fixing strength with the insulating base 17 can be maintained well.

  Moreover, since the side surface of the insulating base 17 opposite to the protruding side of the cord 15 is chamfered into a curved surface to form an inclined surface, the insulating cap portion 23 can be easily covered with the insulating base portion 17. Is easy to assemble.

  Further, since the peripheral edge portion 27 of the insulating cap portion 23 is engaged with the concave groove 19 formed on the outer periphery of the insulating base portion 17, the fixing strength of the insulating cap portion 23 to the insulating base portion 17 is also increased. improves.

  Furthermore, since the insulating cap portion 23 has an end face that is aligned with the slope of the insulating base portion 17, it is difficult to reduce the appearance quality.

  In the above-described embodiment, the cord 15 is drawn laterally at an angle of 90 ° with respect to the fitting direction axis of the plug portion 13 from the end portion of the insulating base portion 17, but the cord 15 is fitted to the connected portion. The present invention can be implemented in a configuration that is drawn obliquely with respect to the direction axis.

  In the above-described embodiment, a corded plug has been described as an example. However, the present invention can also be implemented in a corded jack or in various corded connectors.

It is sectional drawing which shows embodiment of the connection tool with a cord which concerns on this invention (it is a cross section between II in FIG. 3, and shows a part side view). It is a front view which shows embodiment of the connector with a cord which concerns on this invention. FIG. 3 is a cross-sectional view showing an embodiment of a corded connector according to the present invention (a cross-section taken along the line III-III in FIG. 2, partially shown on the side). It is a disassembled perspective view of the connector with a cord of FIG. FIG. 2 is a cross-sectional view (partially shown on a side surface) for explaining an assembly process of the corded connector of FIG. It is sectional drawing (partially shown by a side surface) which shows the conventional connection tool with a cord. It is a perspective view which shows the conventional connection tool with a cord.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 13 Plug part 3, 15 Code | cord | chord 5,17 Insulating base part 7 Plug cap 9 Concave part 11 Convex part 13a 1st connection part 13b 2nd connection part 13c 3rd connection part 19 Concave groove (concave part)
21, 31 Slope 23 Insulating cap 25 Insertion hole 27 Peripheral part 29 Slit

Claims (4)

A conductive connection part that is inserted and connected to a connected part connected to the electronic apparatus;
A columnar insulating base that covers and supports a portion of this conductive connection;
A cord that is electrically connected to the conductive connection portion in the insulating base portion, and is drawn from an end portion of the insulating base portion in an oblique direction with respect to a fitting direction axis with the connected portion. Code,
A cylindrical insulating cap portion covering the cord and covering the end portion of the insulating base portion. The cylindrical insulating cap portion is opened on the side opposite to the protruding side of the cord, and an insertion hole is formed in the vicinity of the opening portion. A flexible insulating cap portion in which the insertion hole is engaged with the insulating base portion;
Comprising
The insulating cap portion is a peripheral portion that covers the insertion hole through the end portion of the insulating base portion in a state where the cord is inserted from the insulating base portion into the insertion hole and forms the insertion hole. Is engaged with the outer periphery of the insulating base. The corded connector according to claim 1, wherein the insulating cap portion is formed by engaging the peripheral portion with a concave groove formed on an outer periphery of the insulating base portion. The corded connector according to claim 1 or 2, wherein a side surface of the insulating base opposite to the protruding side of the cord is chamfered to form a slope. The corded connector according to claim 3, wherein the insulating cap portion has an end surface where the opening portion is aligned with the inclined surface of the insulating base portion.

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