Seal packing for connector

Abstract

To provide a structure for preventing positional displacement or falling of a seal packing 1 interposed between a housing 10 that surrounds and holds an end part of a transmission line and a shield shell 15 that surrounds and protects the side of the housing where the transmission line extends is provided in a connector of the transmission line without providing a structure only for that purpose at the purpose of the shield shell or the housing.SOLUTION: A seal packing is interposed between a shield shell and a housing of a connector of a transmission line along an outer circumference thereof and configured to seal a space between them, is made of an elastically deformable material, in which slits 6 penetrating in a thickness direction of the seal packing are provided respectively at opposite side parts, and an outer part 7 of the slit elastically extends in a closed annular shape so as to be capable of spanning over both edges 16 and 17 of a shield shell 15.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a seal packing that is interposed between a shield shell and a housing of a connector at the end of a transmission line that transmits signals or power, for the purpose of sealing off water. [Background technology]

[0002] In connectors for conductors (transmission lines) that transmit signals or power, a seal packing for sealing the end of the transmission line from the outside is sometimes attached to the outer periphery of a housing that surrounds and holds the end of the transmission line.For example, Patent Document 1 proposes a configuration in which an annular groove is formed on the front surface of a flange of the connector housing that abuts against the abutting surface of a component to which the connector is connected, an annular packing made of an elastic material is accommodated in the annular groove, and the packing seals between the component to which the connector is connected and the flange of the connector housing.In this configuration, an L-shaped locking arm is provided on the outer periphery of the packing that protrudes laterally and then bends rearward away from the front surface of the flange, and a T-shaped hook is integrally provided at the tip of the locking arm.The locking arm utilizes its own elasticity to engage laterally with a locking groove provided on the side of the flange, and the T-shaped hook engages with the rear surface of the locking groove to prevent the packing from easily coming off the connector housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2007-207681 Summary of the Invention [Problem to be solved by the invention]

[0004] In a transmission line connector, when a housing that surrounds and holds the end of the transmission line is fitted with a shielding shell that surrounds and protects the side of the housing along which the transmission line extends, a seal packing is interposed between the outer end face of the shielding shell and the outer periphery of the housing, sealing the inside from the outside. In assembling such a configuration, the seal packing is placed on the outer periphery of the shielding shell, the outer periphery of the housing is abutted against the seal packing, and the shielding shell and the housing are connected to the connector's connection destination in this state (the seal packing may also seal between the outer periphery of the shielding shell and the outer periphery of the connector's connection destination). During the assembly process, the seal packing must be held on the shielding shell to prevent it from shifting or falling off. When providing such a configuration, it is preferable to avoid providing an additional structure on the shielding shell or housing solely for preventing the seal packing from shifting or falling off.

[0005] Thus, the main object of the present invention is to provide a structure for preventing displacement or detachment of a seal packing that is interposed for the purpose of waterproofing between a housing that surrounds and holds the end of a transmission line in a transmission line connector and a shield shell that surrounds and protects the side of the housing along which the transmission line extends, without providing a structure solely for that purpose on the shield shell or housing. [Means for solving the problem]

[0006] According to the present invention, the above-mentioned object is achieved by a seal packing that is arranged along the outer periphery between the shield shell and the housing of a transmission line connector to seal the space between them, the seal packing being made of an elastically deformable material, with slits that penetrate the seal packing in the thickness direction on both opposing sides, and the outer portions of the slits elastically stretch into a closed ring so that they can be hung over both edges of the shield shell.

[0007] In the above configuration, the "transmission line" is a conductor that transmits signals or power, and may be one or more. The "housing" is a member formed to surround and hold the end of the transmission line. The "shield shell" is, as described above, a case-like member with openings at both ends and formed to surround and protect the side of the housing on which the transmission line extends, and the outer periphery of the housing may face one opening via a seal packing, and a part of the housing on which the transmission line extends may be inserted from the other opening.

[0008] In the above-described configuration, in the present invention, the seal packing made of an elastically deformable material is a thin plate-like member having an opening in the central region and interposed circumferentially between the outer peripheral end face of the shield shell and the outer peripheral edge of the housing, and slits are provided on opposite side portions thereof, penetrating the seal packing in the thickness direction. The outer portions of the slits on both ends are elastically stretchable into closed annular shapes, and when the seal packing is disposed on the outer periphery of the shield shell, the outer portions of the slits can be respectively fitted over both edges of the shield shell. With this configuration, when the seal packing on the shield shell is placed, the outer portions of the slits are fitted over both edges of the shield shell, and the seal packing is fixed to the shield shell. This prevents the seal packing from shifting or falling off from the shield shell during the subsequent connector assembly process.

[0009] In the above configuration, the seal packing may be made of any elastically deformable material commonly used in this field. The state in which the outer portion of the slit of the seal packing is hung over the edge of the shield shell may be maintained even when the connector is connected to its mating part. [Effects of the Invention]

[0010] According to the above-described configuration of the present invention, slits are provided on both opposing sides of the seal packing, penetrating the seal packing in the thickness direction, and with the seal packing placed on the shield shell, the annular outer portions of the slits on both sides of the seal packing are pulled and draped over both edges of the shield shell, thereby preventing displacement of the seal packing relative to the shield shell. This configuration is advantageous in that only slits are formed on both sides of the seal packing, and no special configuration is required for the shield shell or housing. Since the configuration of the present invention prevents displacement of the seal packing relative to the shield shell during the connector assembly process, there is no need to reposition the seal packing during the assembly process, and improved quality is also expected.

[0011] Other objects and advantages of the present invention will become apparent from the following description of preferred embodiments of the invention. [Brief explanation of the drawings]

[0012] [Figure 1] 1(A), (B), (C), (D), (E), and (F) are a front view, a left side view, a right side view, a top view, a bottom view, and a rear view, respectively, of the seal packing according to this embodiment. [Figure 2] 2(A) and 2(B) are a schematic top view and a right side view of the seal packing according to this embodiment when the seal packing is placed on the shield shell and the outer portions of the slits on both sides of the seal packing are stretched across the shield shell. [Figure 3] FIG. 3(A) is a schematic perspective view showing an exploded view of a transmission line connector including the seal packing of this embodiment as a constituent member, and FIG. 3(B) is a schematic perspective view of the connector in an assembled state. [Explanation of symbols]

[0013] 1... seal packing, 2... outer periphery of seal packing, 3... opening area, 4, 5... positioning protrusion, 6... slit, 7... outer portion of slit, 10... housing, 15... shield shell, 16, 17... edge of shield shell, 20... shield shell to which connector is connected BEST MODE FOR CARRYING OUT THE INVENTION

[0014] The present invention will now be described in detail with reference to some preferred embodiments thereof with reference to the accompanying drawings, in which like reference numerals indicate like parts.

[0015] Configuring the Connector 3(A) and 3(B), the seal packing 1 according to this embodiment is disposed on the outer peripheral end surface of a shield shell 15 that protects the side of a housing 10 that surrounds and holds the end of the transmission line in a connector configured at the end of a transmission line (not shown), and functions to seal between the outer peripheral edge of the housing 10 and the outer peripheral end surface of a connector 20 to which the shield shell is connected. In particular, in the case of the connector of the illustrated example, tabs 16 and 17 having holes for inserting bolts protrude from both edges of the shield shell 15, and as shown, the shield shell 15 and the mating connector 20 are brought together to embrace the housing 10, and bolts are inserted into the holes of the tabs 16 and 17 to fasten to the mating connector 20. In this case, a seal packing 1 is interposed between the outer end face of the shield shell 15 and the outer edge of the housing 10, and between the outer end face of the shield shell 15 and the outer end face of the mating connector 20, and by tightening the bolts, the seal packing 1 is pressed from both sides, sealing the inside and outside of the seal packing 1.

[0016] Seal packing configuration 1(A) to 1(F), the seal packing 1 of this embodiment is a thin-plate member made of an elastic material, with an opening 3 formed inside an outer peripheral portion 2 that is disposed along the outer peripheral end face of the shield shell. The outer peripheral portion 2 has protrusions 4 and 5 formed thereon so as to align with holes formed in the shield shell when the seal packing 1 is placed on the outer peripheral end face of the shield shell, thereby positioning the seal packing 1 on the shield shell in the vertical and horizontal directions (the protrusion 5 is formed so that a bolt for fastening the shield shell 15 to the mating connector 20 can be inserted therethrough). The seal packing 1 may be made of any elastic material (such as rubber) commonly used in this field.

[0017] In particular, in the seal packing 1 of this embodiment, slits 6 penetrating the seal packing 1 in the thickness direction are provided along both the left and right sides in the drawing, and outer portions 7 of the slits 6 are formed so as to be extensible in an annular shape. In such a configuration, as schematically illustrated in Figures 2(A) and (B), when the seal packing 1 is placed on the shield shell 15 in the connector assembling process, the outer portions 7 of the slits 6 on both sides of the seal packing 1 are respectively extensible in an annular shape and are hung over tabs 16, 17 protruding from the left and right edges of the shield shell 15. Here, because the outer portion 7 is elastically stretched, an elastic contraction force is generated in the outer portion 7 when it is hung on the tabs 16, 17, and as a result, a force is applied that presses the seal packing 1 onto the end face of the shield shell 15, fixing the seal packing 1 to the shield shell 15, and even if the shield shell 15 is tilted or turned upside down in a series of subsequent processes such as attaching the housing 10, the seal packing 1 is prevented from shifting on the shield shell 15 or falling off from the shield shell 15. The state in which the outer portion 7 of the slit of the seal packing 1 is hung over the tabs 16, 17 of the shield shell 15 may be maintained even after the shield shell 15 is fastened to the mating connector 20.

[0018] The above description has been made in relation to the embodiments of the present invention, but it will be apparent that many modifications and changes will be readily apparent to those skilled in the art, and the present invention is not limited to the above-described exemplary embodiments, but can be applied to various devices without departing from the concept of the present invention.

Claims

[Claim 1] A seal packing that is interposed between a shield shell and a housing of a transmission line connector along their outer peripheries to seal the space between them, the seal packing being made of an elastically deformable material, with slits that penetrate the seal packing in the thickness direction on both opposing sides, and the outer portions of the slits elastically stretch into a closed ring so that they can be hung over both edges of the shield shell.

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