JP2015095421A - Waterproof cover, and connector waterproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof cover and a waterproof structure of a connector, capable of securely protecting the connectors.SOLUTION: A waterproof cover 1 includes a first cover 10 and a second cover 20 each formed of an elastic body. The first cover 10 includes: a cable insertion part 11 which is attached to cables 30 each having a connector and through which cables 32 are inserted; and a connector accommodation part 12 for accommodating the connectors 31. The second cover 20 includes: a cable insertion part 21 which is attached to cables 40 each having a connector and through which cables 42 are inserted; and a connector accommodation part 22 for accommodating connectors 41. In a state that shrinkage force is given to an opening of the connector accommodation part 22, the opening of the connector accommodation part 22 is externally fit to an opening of the connector accommodation part 12. The opening of the connector accommodation part 12 has a thicker wall than those of cable insertion parts 11, 21 and the opening of the connector accommodation part 22, to have a retained shape.

Description

  The present invention relates to a waterproof cover and a waterproof structure of a connector, and more particularly to a waterproof cover and a waterproof structure of a connector that can reliably protect a connector.

  From an electronic device used for operation control in an electric vehicle, a hybrid vehicle, or the like, a wire harness incorporating an electric wire extends, and a connector is provided at a location where the wire harness is connected. A configuration in which a protective member is provided at the connector connecting portion is used to protect the connector from external water and impact.

  2. Description of the Related Art Conventionally, as a waterproof structure of a connector, a configuration (for example, Patent Document 1) is known in which a connector is protected by providing an elastic material (rubber material) cover around one connector composed of a male type and a female type. . In the invention described in Patent Document 1, the cover is curled before the connector is fitted, and the connector is protected by extending and overlapping the cover after the connector is fitted.

JP 2010-165523 A

  In the configuration described in Patent Document 1, an elastic material cover is provided so as to cover the periphery of the connector. Therefore, in order to waterproof the cover by overlapping the cover, The inner cover must be supported on its outer periphery. In this case, it is necessary to create a cover in accordance with the shape of the connector, and the number of types of cover increases in accordance with the type of connector to be used, resulting in an increase in manufacturing cost. In addition, since a cover is provided for each connector, a plurality of connectors cannot be accommodated in the cover together, and a cover for each connector is required, resulting in an increase in the number of parts. In addition, since the cover is formed in accordance with the connector shape, if the position of the connector in the cover is shifted due to an electric wire connected to the connector being pulled, the waterproof property by the cover may be reduced.

  The present invention has been made in view of these points, and provides a waterproof cover and a waterproof structure for a connector that can reliably protect the connector even when a waterproof structure for the waterproof cover and the connector is provided. With the goal.

  In order to solve the above problems and achieve the object, a waterproof cover according to the present invention is attached to a first electric wire with a connector, and a first electric wire insertion portion through which the electric wire is inserted and a first connector in which the connector is accommodated. A first cover made of an elastic body having a connector housing portion, a second wire insertion portion that is attached to the second connector-attached electric wire and through which the electric wire is inserted, and a second connector housing portion that accommodates the connector And a second cover made of an elastic body, wherein the opening of the second connector housing portion is in the state where the contraction force is applied to the opening of the second connector housing portion. It is fitted on the opening of the housing part. The opening of the first connector housing portion is formed to be thicker than the opening of the first wire insertion portion, the second wire insertion portion, and the second connector housing portion, and is held in shape.

  Further, a ridge with a hook-shaped cross section is formed on the entire inner periphery of the opening of the second connector housing portion, and the ridge is engaged with the outer periphery of the opening of the first connector housing portion. The groove to be formed may be formed.

  The waterproof structure of the connector according to the present invention is attached to the first connector-attached wire, the second connector-attached wire connected to the first connector-attached wire, and the first connector-attached wire. A first cover made of an elastic body having a first wire insertion portion to be inserted and a first connector accommodating portion for accommodating a connector, and the second connector-attached electric wire, and the electric wire is inserted. A second cover made of an elastic body having a second wire insertion portion and a second connector housing portion in which the connector is housed, and contraction force is applied to the opening of the second connector housing portion. In this state, the opening of the second connector housing portion is fitted over the opening of the first connector housing portion. The opening of the first connector housing portion is formed to be thicker than the opening of the first wire insertion portion, the second wire insertion portion, and the second connector housing portion, and the shape thereof is maintained. The first connector-attached electric wire and the second connector-attached electric wire are not in close contact with the outer periphery of the connector.

  Further, a ridge with a hook-shaped cross section is formed on the entire inner periphery of the opening of the second connector housing portion, and the ridge is engaged with the outer periphery of the opening of the first connector housing portion. The groove to be formed may be formed. Further, the first connector-attached electric wire includes a plurality of electric wires and a plurality of connectors individually connected to the respective electric wires, and the second connector-attached electric wires include the plurality of electric wires and the respective electric wires. A plurality of connectors connected to each other, and the plurality of connectors may be housed inside the first connector housing portion and the second connector housing portion.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where the waterproof structure of a waterproof cover and a connector is installed, it becomes possible to provide the waterproof structure of the waterproof cover and connector which can protect a connector reliably.

It is a perspective view which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the waterproof structure of the connector which concerns on the 2nd Embodiment of this invention.

[First Embodiment]
A waterproof cover and a waterproof structure of a connector according to an embodiment of the present invention will be described based on the drawings.

  FIG. 1 is a perspective view showing a configuration of a waterproof structure for a connector according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a configuration of the waterproof structure for a connector according to an embodiment of the present invention. is there. FIG. 3 is a cross-sectional view showing the structure of the waterproof structure of the connector according to the embodiment of the present invention. 3 is a cross-sectional view taken along the line A-A 'of FIG.

  As shown in FIGS. 1 to 3, the waterproof structure of the connector according to the present embodiment includes a waterproof cover 1 having a first cover 10 and a second cover 20. In addition, the waterproof structure of the connector according to the present embodiment includes a connector 30 including a connector 31 and an electric wire 32 provided in the first cover 10 and the second cover 20, and a connector including a connector 41 and an electric wire 42. Attached electric wire 40 is provided.

  The first cover 10 and the second cover 20 each have a cylindrical shape so that the electric wire 30 with connector and the electric wire 40 with connector can be accommodated therein. The first cover 10 and the second cover 20 are formed of an elastic body such as rubber, for example.

  The 1st cover 10 and the 2nd cover 20 have the connector accommodating part 12 and the connector accommodating part 22 in which the space which can accommodate the some connector 31 and the connector 41 is formed inside. The connector housing portion 12 and the connector housing portion 22 have an internal space that does not adhere to the outer periphery of the connector 31 and the connector 41 of the connector-attached electric wire 30 and the connector-attached electric wire 40. In other words, the connector 31 and the connector 41 are idle inside the connector housing portion 12 and the connector housing portion 22 of the first cover 10 and the second cover 20.

Moreover, the 1st cover 10 and the 2nd cover 20 have the electric wire insertion part 11 and the electric wire insertion part 21 in which the electric wire 32 and the electric wire 42 of the electric wire 30 with a connector and the electric wire 40 with a connector are inserted. In the embodiment shown in FIG. 1 to FIG. 3, the wire insertion portion 11 and the wire insertion portion 21 formed of an elastic body are formed to have such a diameter that they contract and come into close contact with the periphery of the wire 32 and the wire 42. Yes.
In addition, although illustration is abbreviate | omitted, by tape-wrapping the edge part area | region of the electric wire insertion part 11 and the electric wire insertion part 21 which the electric wire 32 and the electric wire 42 penetrated from the edge part opening of the electric wire insertion part 11 and the electric wire insertion part 21 Water can be prevented from entering the inside of the waterproof cover 1 and the waterproof property can be enhanced.

  On the inner periphery of the opening of the connector housing portion 22 of the second cover 20, a ridge portion 23 having a bowl-shaped cross section is formed over the entire periphery. In addition, a concave groove 13 with which the protrusion 23 is engaged is formed on the outer periphery of the opening of the connector housing portion 12 of the first cover 10. By overlapping this protrusion 23 with the first cover 10 and the second cover 20 and engaging the groove 13, the opening of the connector housing 22 is fitted over the opening of the connector housing 12. At this time, contraction force is applied to the opening of the connector housing portion 22 formed of an elastic body, and the connectors in the first cover 10 and the second cover 20 are sealed. Further, by forming the cross section of the ridge portion 23 in a saddle shape, airtightness is improved, and the engagement between the ridge portion 23 and the groove portion 13 can be made difficult to disengage.

  FIG. 4 is a cross-sectional view showing a method for engaging the ridge 23 with the groove 13. As shown in FIG. 4A, the jig 50 is applied to the base of the protrusion 23, and the protrusion 23 is pushed into the groove 13 as shown in FIG. The opening is fitted around the opening of the connector housing 12.

  As shown in FIGS. 1 to 3, the opening of the connector housing portion 12 of the first cover 10 is formed by the wire insertion portion 11 of the first cover 10, the wire insertion portion 21 of the second cover 20, and the connector housing portion. It is formed to be thicker than the opening of 22 and the shape is maintained. The elastic force of the connector housing portion 12 of the first cover 10 can prevent deformation and protect the internal connector 31 and the connector 41 from external impact. Further, by making the thickness of the connector housing portion 12 of the first cover 10 thicker than the thickness of the connector housing portion 22 of the second cover 20, the thickness of the connector housing portion 12 of the first cover 10 can be increased. The space around the connector 31 and the connector 41 can be maintained by the holding force. Anything that can be accommodated in the space of the connector accommodating portion 12 and the connector accommodating portion 22 can be waterproofed and protected regardless of the shape and number of the connectors 31 and 41.

  The connector-attached electric wire 30 and the connector-attached electric wire 40 are connected by fitting the connector 31 and the connector 41 in the first cover 10 and the second cover 20. As FIG. 1 thru | or FIG. 3 shows, although the electric wire 30 with a connector and the electric wire 40 with a connector of this Embodiment are provided 4 each, the number of the electric wires 30 with a connector and the electric wires 40 with a connector is as follows. If it can accommodate in the inside of the connector accommodating part 12 and the connector accommodating part 22 of the 1st cover 10 and the 2nd cover 20, it can change arbitrarily.

  Next, a procedure for forming the waterproof structure of the connector configured as described above will be described. 5 to 9 are cross-sectional views for explaining a procedure for forming the waterproof structure of the connector according to the present embodiment.

  First, as shown in FIG. 5, a jig for expanding the wire insertion portion 11 and the wire insertion portion 21 through the openings of the wire insertion portion 11 and the wire insertion portion 21 of the first cover 10 and the second cover 20. 51. Since the first cover 10 and the second cover 20 are formed of an elastic body, and the wire insertion portion 11 and the wire insertion portion 21 are formed with a thin thickness, the connector 31 and the connector 41 are inserted. Can be expanded by a sufficient diameter to do so. Therefore, even if it is the electric wire 30 with a connector and the electric wire 40 with a connector after attaching the connector 31 and the connector 41, the 1st cover 10 and the 2nd cover 20 can be attached.

  Next, as illustrated in FIG. 6, the connector 31 and the connector 41 are fitted to each other to connect the connector-attached electric wire 30 and the connector-attached electric wire 40.

  Next, as shown in FIG. 7, the connector housing portion 22 of the second cover 20 is rolled up toward the outside. Since the connector housing portion 22 of the second cover 20 is also formed with a thin wall thickness, it can be rolled outward. At this time, the positions of the connector 31 and the connector 41 in the connector housing portion 12 and the connector housing portion 22 can be adjusted.

  Next, as shown in FIG. 8, the raised portion of the connector housing portion 22 of the second cover 20 is returned to its original shape. Then, as shown in detail in FIG. 4, the protrusion 23 is pushed into the groove 13 using the jig 50.

  Then, as shown in FIG. 9, the protruding portion 23 is completely pushed into the groove portion 13, and the opening of the connector housing portion 22 is externally fitted to the opening of the connector housing portion 12, whereby the connector waterproof structure of the present embodiment Can be formed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. The overall structure of the waterproof structure of the connector of this embodiment is the same as that of the first embodiment, and a detailed description thereof is omitted. Moreover, the same code | symbol is attached | subjected to the location which has the structure similar to 1st Embodiment, and the overlapping description is abbreviate | omitted. The waterproof structure of the connector of the present embodiment is different from the first embodiment in the shape of the connector housing portion 12 of the first cover 10.

  FIG. 10 is a cross-sectional view of the waterproof structure of the connector of the present embodiment, and illustrates portions corresponding to the waterproof structure of the connector of the first embodiment shown in FIG. Also in the waterproof structure of the connector according to the present embodiment, the opening of the connector housing portion 12 of the first cover 10 has the wire insertion portion 11 of the first cover 10 and the wire insertion portion 21 of the second cover 20 and the connector housing. It is the same as in the first embodiment in that it is formed thicker than the opening of the portion 22 and is held in shape.

  As shown in FIG. 10, the waterproof structure of the connector of the present embodiment has an extension portion 12 formed in the connector housing portion 12 of the first cover 10 so as to extend to a position covering both the connector 31 and the connector 41. It differs from the first embodiment in that 'is formed. Of the connector housing portion 12 and the extension portion 12 ′ of the present embodiment, the portion where the thickness is formed is extended before the portion where the connector 31 is located and reaches the portion where the connector 41 is located. Yes.

  Even in the waterproof structure of the connector configured as described above, the opening of the connector housing portion 12 and the extension portion 12 ′ of the first cover 10 can be connected to the wire insertion portion 11 of the first cover 10 or the wires of the second cover 20. By forming it thicker than the opening of the insertion portion 21 and the connector housing portion 22, deformation is prevented by the elastic force of the connector housing portion 12 of the first cover 10, and the internal connector 31 and the connector 41 are impacted from outside. Protect from. In addition, the connector housing portion 12 and the extension portion 12 ′ of the first cover 10 are made thicker than the connector housing portion 22 of the second cover 20, so that the connector housing of the first cover 10 is accommodated. The space around the connector 31 and the connector 41 can be maintained by the holding force of the thickness of the portion 12.

  Further, by forming the thickened portion of the connector housing portion 12 and the extension portion 12 ′ so as to extend to a position covering both the connector 31 and the connector 41, both the connector 31 and the connector 41 are formed. It can be surely protected. In addition, since the length in which the first cover 10 and the second cover 20 overlap is increased, the waterproof performance can be improved.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, the waterproof structure of the connector described in the embodiment is in close contact with the wire insertion portion 11 and the wire insertion portion 21, and the wire 32 and the wire 42, but the wire insertion portion 11 and the wire insertion portion 21 and the wire A space in which a space is provided between 32 and the electric wire 42 may be formed.

  DESCRIPTION OF SYMBOLS 1 ... Waterproof cover, 10 ... 1st cover, 11 ... Electric wire insertion part, 12 ... Connector accommodating part, 13 ... Projection part, 20 ... 2nd cover, 21 ... Wire insertion part, 22 ... Connector housing part, 23 ... Groove part, 30 ... Electric wire with connector, 31 ... Connector, 32 ... Electric wire, 40 ... Electric wire with connector, 41 ... Connector, 42 ... Electric wire, 50, 51 ... Jig.

Claims (5)

A first cover made of an elastic body, which is attached to a first electric wire with a connector and has a first electric wire insertion portion through which the electric wire is inserted and a first connector accommodation portion in which the connector is accommodated;
A second cover made of an elastic body, which is attached to the second electric wire with a connector, and has a second electric wire insertion portion through which the electric wire is inserted and a second connector accommodation portion in which the connector is accommodated.
In a state where contraction force is applied to the opening of the second connector housing portion, the opening of the second connector housing portion is a waterproof cover that is externally fitted to the opening of the first connector housing portion,
The opening of the first connector housing portion is formed to be thicker than the opening of the first wire insertion portion, the second wire insertion portion, and the second connector housing portion, and is held in shape. Waterproof cover featuring. On the inner periphery of the opening of the second connector housing portion, a hook with a cross-sectional shape is formed over the entire periphery,
The waterproof cover according to claim 1, wherein a groove with which the protrusion is engaged is formed on an outer periphery of the opening of the first connector housing portion. An electric wire with a first connector;
A second electric wire with a connector connected to the first electric wire with a connector;
A first cover made of an elastic body, which is attached to the first electric wire with a connector and has a first electric wire insertion portion through which the electric wire is inserted and a first connector accommodation portion in which the connector is accommodated;
A second cover made of an elastic body, which is attached to the second electric wire with a connector, and has a second electric wire insertion portion through which the electric wire is inserted and a second connector accommodation portion in which the connector is accommodated.
The connector has a waterproof structure in which the opening of the second connector housing portion is externally fitted to the opening of the first connector housing portion in a state where contraction force is applied to the opening of the second connector housing portion. And
The opening of the first connector housing portion is formed to be thicker than the opening of the first wire insertion portion, the second wire insertion portion, and the second connector housing portion, and the shape thereof is maintained. The connector waterproof structure, wherein the connector-attached electric wire and the second connector-attached electric wire are not in close contact with each other. On the inner periphery of the opening of the second connector housing portion, a hook with a cross-sectional shape is formed over the entire periphery,
The waterproof structure for a connector according to claim 3, wherein a groove with which the protrusion is engaged is formed on an outer periphery of the opening of the first connector housing portion. The electric wire with the first connector includes a plurality of electric wires and a plurality of connectors individually connected to the electric wires, and the electric wire with the second connector is individually connected to the electric wires and the electric wires. 5. The connector according to claim 3, wherein the plurality of connectors are housed inside the first connector housing portion and the second connector housing portion. Waterproof structure.

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