JP2012199144A - Plug coming-off prevention structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a plug coming-off prevention structure capable of reliably preventing plugs with various shapes from being detached.SOLUTION: A plug coming-off prevention structure prevents a plug 4 having a cord 4a extending from a back face and fitted with a connector 6 from being detached from the connector 6. The structure has the connector 6; a case 5 having an installation face 5c provided adjacent to the connector 6 and in parallel to an insertion/removal direction of the plug 4; a wall part 10 covering both sides and a back face of the plug 4; a mounting part 11 fixed to the installation face 5c of the case 5 via a fixing hole 1b provided orthogonal to the insertion/removal direction of the plug 4; and a holder 1 having a slit 1a cut at a width, at which a cord 4a can pass from an end on the side contacting the installation face 5c at a portion of the wall part 10 covering the back face of the plug 4.

Description

  The present invention relates to a plug retaining structure, and more particularly, to a plug retaining structure in which a plug itself has no structure such as a screw or a claw and holds the plug against a connector only by pressure.

  In the connector disconnection prevention structure disclosed in Patent Document 1, an L-shaped metal fitting is installed so as to cover the plug, and a shape is provided with a slit for passing the cord through a portion contacting the back surface where the cord of the plug is protruding. It has become.

  Moreover, the L-shaped metal fitting is attached to the connector in which the plug is fitted on the side where no slit is formed.

  In the invention disclosed in Patent Document 2, the main body of the retainer has a cylindrical shape, a plug is inserted into the cylinder, and a lid that is cut out so that the cord of the plug passes is installed in the cylindrical main body. This prevents the plug from coming off.

  Moreover, the cylindrical main body is fixed to the connector side with a claw.

Japanese Utility Model Publication No. 4-119971 JP 2006-202630 A

  In the connector removal preventing structure described in Patent Document 1, the holder metal fitting for retaining is L-shaped, and only one side is fixed. For this reason, the L-shaped holder metal fitting that is fixed only in a cantilever shape is deformed when the plug is forcedly pulled out, the plug cannot be suppressed, and the plug may come off.

  In the invention described in Patent Document 2, since the fixing method of the retainer with respect to the main body is only fixing with the tab of the retainer, the effect of retaining is small. Moreover, since the main body is cylindrical, it can be used only for plugs that enter the cylinder, and the plug shape is limited.

  Further, in common with the inventions described in Patent Documents 1 and 2, the place where the plug is restrained from the removal direction has a planar shape, so that it does not come off against plugs having various outer surfaces such as a curved surface these days. There is a possibility that the area where the holder is in contact with the plug is reduced, and effective prevention cannot be prevented.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a plug retaining structure capable of securely retaining and fixing plugs of various shapes.

  In order to solve the above-described problems and achieve the object, the present invention provides a plug retaining structure that includes a cord extending from the back surface and prevents a plug fitted to the connector from the front surface from being pulled out of the connector. , A case provided with an installation surface provided parallel to the plug insertion / removal direction adjacent to the connector, a wall surface covering both side surfaces and the back surface of the plug, and a fixing provided to be orthogonal to the plug insertion / removal direction A mounting part that is fixed to the installation surface of the case through a hole, and a slit that is cut into a portion that covers the back surface of the plug of the wall surface part with a width that allows the cord to pass from an end that is in contact with the installation surface; It is characterized by having a holder provided with.

  According to the present invention, the U-shaped holder capable of accommodating various shapes of plugs is screwed to the case where the connector is installed, so that the plug can be reliably prevented from coming off.

FIG. 1 is an exploded perspective view showing a configuration of a first embodiment of a plug retaining structure according to the present invention. FIG. 2 is a plan view of the plug retaining structure of the first embodiment. FIG. 3 is a rear view of the plug retaining structure of the first embodiment. FIG. 4 is a cross-sectional view of the plug retaining structure. FIG. 5 is a partially enlarged sectional view of the plug retaining structure. FIG. 6 is a cross-sectional view of the plug retaining structure. FIG. 7 is an exploded perspective view showing the configuration of the second embodiment of the plug retaining structure according to the present invention. FIG. 8 is an exploded perspective view showing the configuration of the third embodiment of the plug retaining structure according to the present invention. FIG. 9 is a plan view of the plug retaining structure of the third embodiment. FIG. 10 is a cross-sectional view of the plug retaining structure.

  Embodiments of a plug retaining structure according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is an exploded perspective view showing a configuration of a first embodiment of a plug retaining structure according to the present invention. FIG. 2 is a plan view of the plug retaining structure of the first embodiment. FIG. 3 is a rear view of the plug retaining structure of the first embodiment. The plug retaining structure of the present embodiment includes a holder 1, an elastic body 2, a fixing screw 3, a plug 4, a case 5, and a connector 6.

  The holder 1 has a wall surface portion 10 and an attachment portion 11. The wall surface portion 10 has a substantially U-shape as viewed from above, with the walls connected so as to cover both side surfaces of the plug 4 and the back surface of the plug 4 where the cord 4a is protruding. Moreover, the part which contact | connects the rear surface of the plug 4 of the holder 1 has the slit 1a of the width | variety through which the cord 4a can pass. FIG. 4 is a cross-sectional view of the plug retaining structure, showing the IV-IV cross section in FIG. As shown in FIG. 4, when the holder 1 is attached to the case 5, the slit 1a is closed by the case 5 and restricts the movement of the cord 4a. Therefore, there is no possibility that the cord 4a comes off from the end of the slit 1a. As shown in FIG. 2, the holder 1 has a gap between the side surface of the plug 4 and is open to the plug 4 except for both side surfaces and the rear surface. Installation is possible even if it is not a size.

  The attachment portion 11 has a hole 1b perpendicular to the fitting direction of the plug 4 with the connector 6, and is fastened to the screw hole 5b with the fixing screw 3 so that the case 5 is adjacent to the connector 6. It is fixed to the installation surface 5c which is parallel to the insertion / extraction direction of the plug 4 provided. Since the fixing screw 3 is perpendicular to the direction in which the plug 4 is pulled out, the holder 1 can be firmly fixed against the force by which the plug 4 is pulled out.

  FIG. 5 is a partially enlarged sectional view of the plug retaining structure. As shown in FIGS. 4 and 5, a linear protrusion 1 c is provided in a portion of the holder 1 that contacts the case 5 in parallel with the direction in which the plug 4 is pulled out. On the other hand, a groove 5 a is formed on the installation surface 5 c of the case 5. When the holder 1 is installed on the case 5, the protrusion 1c engages with the groove 5a. Due to the engagement of the irregularities, the rotation of the holder 1 around the fixing screw 3 can be suppressed. When the friction coefficient between the holder 1 and the case 5 is large, the rotation of the holder 1 can be suppressed by the friction force generated by the pressure when the fixing screw 3 is tightened, so the protrusion 1c and the groove 5a are omitted. It is also possible to adopt the configuration described above.

  FIG. 6 is a cross-sectional view of the plug retaining structure, showing a VI-VI cross section in FIG. As shown in FIG. 6, the holder 1 is provided with an elastic body 2 so as to be sandwiched between the holder 1 and the plug 4. When the plug 4 is attached to the holder 1, the elastic body 2 is deformed according to the shape of the plug 4, and the contact area with the plug 4 is expanded. By increasing the contact area between the elastic body 2 and the plug 4, when the plug 4 is forced to be pulled out, the entire holder 1 can receive the force in the pulling direction of the plug 4. The power can be distributed. Thereby, it is possible to reliably prevent the plug 4 and the holder 1 from being deformed and the plug 4 from passing through the slit 1a, and the effect of preventing the plug 4 from coming off can be enhanced. In addition, since the elastic body 2 can be deformed into various shapes, even when the plug 4 has a complicated shape, the elastic body 2 deforms in accordance with the shape of the plug 4, and the holder 1 receives the plug 4 with a wide contact area. be able to.

  The wall surface portion 10 of the holder 1 is substantially U-shaped when viewed from above, and the wall surface provided with the slit 1a is located at the center of the U-shape, so that the overall rigidity is high. For this reason, even when it is set as the structure which abbreviate | omitted the elastic body 2, the holder 1 does not raise | generate a deformation | transformation with the force at the time of trying to pull out the plug 4 forcibly.

  Thus, in the present embodiment, the holder shape for holding the plug is shaped to cover the both side surfaces of the plug and the rear surface from which the cord is protruding in a U-shape, thus increasing the rigidity of the holder itself, Various shapes of plugs can be accommodated in the holder. In addition, with regard to the fixing of the holder, the case where the connector is installed is secured with screws, and the U-shaped holder is fitted into the groove provided in the case where the connector is installed, so that the holder is firmly secured. There is an effect. Further, an elastic body is disposed at a portion where the holder is in contact with the plug, and even if the rear surface of the plug is not flat, the holder is deformed into a shape matched to the plug, thereby obtaining a retaining effect.

Embodiment 2. FIG.
FIG. 7 is an exploded perspective view showing the configuration of the second embodiment of the plug retaining structure according to the present invention. In the present embodiment, the hole 1b of the holder 1 is different from the first embodiment in that it is a long hole along the entire length direction of the plug 4. Thereby, the attachment position with respect to the case 5 of the holder 1 can be changed, and it can respond to the plug 4 of not only specific length but various length.

  Since other aspects are the same as those in the first embodiment, a duplicate description is omitted.

Embodiment 3 FIG.
FIG. 8 is an exploded perspective view showing the configuration of the third embodiment of the plug retaining structure according to the present invention. FIG. 9 is a plan view of the plug retaining structure of the third embodiment. FIG. 10 is a cross-sectional view of the plug retaining structure and shows a cross section taken along line XX in FIG. The present embodiment is different from the second embodiment in that peaks and valleys are provided in the protrusion 1c of the holder 1 and the groove 5a of the case 5.

  When the holder 1 is installed in the case 5, the peak portion on the projection 1c side and the valley portion on the groove 5a side, or the valley portion on the projection 1c side and the peak portion on the groove 5a side are engaged.

  The surface of the protrusion 1c and the groove 5a engaged with the peaks and valleys has an inclination that is nearly vertical when viewed from the direction in which the plug 4 comes out of the connector 6, and an inclination that is nearly horizontal when viewed from the direction in which the plug 4 is inserted into the connector 6. It has become. Accordingly, the holder 1 is prevented from moving in the direction in which the plug 4 is removed from the connector 6 together with the plug 4, so that the holder 1 regulates the removal of the plug 4. Further, the holder 1 can slide over the peaks and valleys in the direction in which the plug 4 is inserted into the connector 6, and the installation position of the holder 1 can be easily changed with respect to the insertion direction of the plug 4 into the connector 6. .

  When the fixing screw 3 is tightened, the holder 1 is in close contact with the case 5, so that the movement of the holder 1 in the insertion direction of the plug 4 into the connector 6 is also restricted. In this manner, the plug 4 can be prevented from coming off strongly by the shape of the peaks and valleys between the protrusion 1 c of the holder 1 and the groove 5 a of the case 5 and the restriction of the movement of the holder 1 with respect to the case 5 by the fixing screw 3.

  In addition, it is possible to set the installation position of the holder 1 finely with respect to the plug 4 of various lengths by setting the pitch of a mountain valley finely.

  Since the rest is the same as that of the second embodiment, a duplicate description is omitted.

DESCRIPTION OF SYMBOLS 1 Holder 1a Slit 1b Hole 1c Protrusion 2 Elastic body 3 Fixing screw 4 Plug 4a Cord 5 Case 5a Groove 5b Screw hole 5c Installation surface 6 Connector 10 Wall part 11 Attachment part

Claims (5)

A plug retaining structure for preventing a plug fitted with a connector from a front surface from being provided with a cord extending from the back surface, and preventing the plug from being detached from the connector,
A case provided with the connector, and an installation surface provided adjacent to the connector and parallel to the insertion / extraction direction of the plug;
A wall surface portion that covers both side surfaces and the back surface of the plug, a mounting portion that is fixed to the installation surface of the case via a fixing hole that is provided so as to be orthogonal to the plug insertion / extraction direction, and the wall surface portion And a holder provided with a slit cut in a width that allows the cord to pass from an end on the side in contact with the installation surface at a portion that covers the back surface of the plug. .   The plug retaining structure according to claim 1, wherein the fixing hole has an elongated hole shape extending in the insertion / extraction direction of the plug.   The plug retaining structure according to claim 1, wherein the holder and the case have a mountain-valley shape that engages with each other. The case has a groove on the installation surface that extends in the insertion / extraction direction of the plug,
The plug retaining structure according to any one of claims 1 to 3, wherein the holder has a convex portion that engages with the groove.   5. The plug retaining structure according to claim 1, wherein the holder includes an elastic body at a portion that contacts the plug. 6.

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