JPH09112699A - Seal member mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent slipping-off of a seal member certainly. SOLUTION: Mounting of a seal member 20 is made by accommodating in a groove 17 through its narrow opening 17A in the condition that the extension part 21 is stretched to become thin, allowing the extension part to restitute with resilience, and setting a slipoff stopping part 22 in a recess 19. In the mounted condition, the extension part 21 is checked from going through to the side with the butting surface 15 by the narrow opening 17A of the mounting groove 17, while going through to the side with a seal groove 16 is restricted as the slipoff stopping part 22 hitches at the inside wall of the recess 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal member mounting structure.

[0002]

2. Description of the Related Art As a mounting structure for a seal member, there is one shown in FIG. This is because a seal groove 4 is formed in the flange 2 of the panel mounting connector 1 so as to surround the connector housing 3, an annular seal member 5 is fitted in the seal groove 4, and the inner wall of the seal groove 4 is removed. Flange 2
The lateral hole 6 reaching the outer peripheral surface of the seal member 5 is formed, and the extending portion 7 of the seal member 5 is fitted into the lateral hole 6. In such a structure, the extending portion 7 is fitted in the lateral hole 6 to hold the seal member 5 in the seal groove 4.

[0003]

In such a structure, when the seal member 5 is pulled while changing its posture as shown in FIG. 8, the extending portion 7 is pulled out from the lateral hole 6, and As a result, the seal member 5 easily comes off the seal groove 4.

The present invention was created in view of the above circumstances, and it is an object of the present invention to reliably prevent removal of the seal member.

[0005]

According to a first aspect of the present invention, an elastically deformable seal member is mounted on an abutting surface of a seal mounting component with a mating component, and an extension projecting laterally to the seal member. In addition to forming the part integrally, a wide retaining part is formed at the tip of this extension part, and a mounting groove into which the extension part can be fitted is formed in the seal mounting part, and the opening of the mounting groove is extended. It is characterized in that it is formed to be narrower than the projecting part, and when the extending part is fitted into the mounting groove, the extending part is stretched to be thin so as to pass through the opening of the mounting groove. .

The invention of claim 2 is characterized in that, in the invention of claim 1, the seal mounting portion is formed with a recess for accommodating the retaining portion when the seal member is mounted.

[0007]

According to the invention of claim 1, when the seal member is attached, the extension portion of the seal member is extended so as to pass through the narrow opening of the attachment groove. To fit. In the mounted state, since the extension part elastically restores and becomes thicker than the narrow part of the mounting groove, the extension part does not come off the mounting groove, and the wide retaining part does not pass through the mounting groove. The removal of the seal member can be reliably prevented.

According to the second aspect of the invention, since the retaining portion is housed in the recess when the seal member is attached, it is possible to prevent the retaining portion from interfering with other members or the like.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, a case where the present invention is applied to a seal structure in a mounting portion between a panel mounting type connector (seal mounting component which is a constituent of the present invention) 10 and a panel (not shown) which is a counterpart component which is a constituent of the present invention explain.

The panel mount type connector 10 of this embodiment.
Is a connector housing 1 with two hoods 12
1, a terminal fitting (not shown) attached to the connector housing 11 so as to project into the hood portion 12, a flange 13 having a substantially rectangular shape formed in a flange shape on the outer periphery of the connector housing 11, and four corners of the flange 13. It is constituted by a bolt 14 integrally attached at a position close to.

The panel mounting type connector 10 is mounted on the panel by inserting the two hood portions 12 into the mounting holes (not shown) of the panel and the bolts 14 through the bolt holes (not shown) of the panel. Then, a nut (not shown) is screwed from the back side and tightened by a known method. In the mounted state, the flange 13 is closely attached to the front surface of the panel so as to be overlapped with each other, and the gap between the flange 13 and the panel is waterproofed by the seal member 20.

Next, the seal structure will be described. On the abutting surface 15 of the flange 13 facing the panel, a seal groove 16 having an annular path along the peripheral edge of the hood portion 12 is formed, and the seal groove 20 is formed with a rubber annular seal member 20. It is fitted and installed. The seal member 20 is arranged so as to surround the two hood portions 12, and in the gap between the panel and the flange 13,
Intrusion of water and foreign matter from the inner peripheral side to the outer peripheral side of the seal member 20 is prevented, so that the electronic components and the like in the panel are protected.

A mounting groove 17 is formed on the flange 13 so as to reach the seal groove 16 from the outer peripheral surface thereof. The mounting groove 17 is opened to the abutting surface 15 in the entire range from the seal groove 16 to the outer periphery of the flange 13. The opening 17A of the mounting groove 17 is formed with a pair of overhanging portions 18, 18 projecting inward from both side edges, and the opening 17A of the opening 17A to the abutting surface 15 is formed by these overhanging portions 18, 18. The width is narrow. Further, a recess 19 is formed in a portion of the mounting groove 17 on the outer peripheral side of the flange 13 and has a width wider than that of the seal groove 16 side and opens on the outer peripheral surface of the flange 13.

On the other hand, the sealing member 20 has the above-mentioned mounting groove 1
An extending portion 21 protruding outward from a position corresponding to 7 is integrally formed. The width of the extension portion 21 in the free state is slightly smaller than the width of the mounting groove 17, and the extension portion 21 can be fitted into the mounting groove 17. The extension portion 21 is adapted to elastically bend by pulling it outward so that the width thereof becomes narrow like a spool. The extending portion 21 extends from the seal groove 16 to the flange 13.
In a state where the extension portion 21 is stretched to a dimension slightly longer than the distance to the outer periphery of the mounting groove 17,
The width is slightly smaller than the width of the narrow opening 17A to the abutting surface 15. Therefore, the extended portion 21 in the stretched state as described above can be inserted into the mounting groove 17 through the narrow opening 17A. Further, the protruding end of the extending portion 21 is formed with a retaining portion 22 that is wider than the extending portion 21 by protruding to both sides. The width of the retaining portion 22 is considerably larger than the width of the mounting groove 17 and slightly smaller than the width of the recess 19. In the state in which the extended portion 21 in the free state is fitted in the mounting groove 17, the retaining portion 22 faces the inner wall surface of the recess 19 on the seal groove 16 side with almost no gap,
When the extending portion 21 attempts to move to the seal groove 16 side, the retaining portion 22 comes into contact with the inner wall surface of the recess 19 and is caught.

Next, the operation of the present embodiment will be described. When the seal member 20 is attached to the flange 13, the seal member 20 is fitted into the seal groove 16, and the retaining portion 22 is pinched to extend the extension portion 21 to make a thin deformation, and the extension portion 21 is narrowed. Fit into the mounting groove 17 through the opening 17A. After that, when the hand is released from the retaining portion 22, the extension portion 21 is deformed by the elastic restoring force so that the width is widened and the length is shortened, and the extension portion 21 is housed in the mounting groove 17, and The retaining portion 22 is housed in the recess 19. As described above, the work of attaching the seal member 20 is completed.

With the seal member 20 attached, even if the extension portion 21 is to be pulled out toward the seal groove 16 side, the pull-out prevention portion 22 engages with the inner wall surface of the recess 19 to remove the extension portion 21. Is blocked. In addition, the extension portion 21
And when trying to pull out the retaining portion 22 to the abutting surface 15 side,
Since it is locked by the overhanging portion 18 that narrows the opening 17A, the extension 21 and the retaining portion 22 are also prevented from being withdrawn to the abutting surface 15 side. Therefore, the seal member 20 is reliably prevented from coming off the flange 13.

When removing the seal member 20, the retaining portion 22 is pinched to extend the extending portion 21 thinly, and the retaining portion 22 is projected from the inside of the recess 19 to the outer peripheral side of the flange 13 and is extended while maintaining that state. The projecting portion 21 and the retaining portion 22 are moved to the abutting surface 15 side. Then, the thinned extension 2
1 passes through the narrow opening 17A and is taken out from the inside of the mounting groove 17 to the abutting surface 15 side. After that, the extension portion 21 may be elastically restored and deformed to a free state, and the seal member 20 may be taken out from the seal groove 16.

As described above, in the present embodiment, both the removal of the seal member 20 toward the seal groove 16 side and the removal of the seal member 20 toward the abutting surface 15 are prevented, so that the flange of the seal member 20 is prevented. The removal from 13 can be reliably prevented.

Since the width of the opening 17A to the abutting surface 15 is narrowed not only in the mounting groove 17 but also in the concave portion 19, the retaining portion 22 does not come off to the abutting surface 15 side, and the retaining portion 22 is formed. The removal of the seal member 20 due to the removal to the abutting surface 15 side is prevented.

Further, the retaining portion 22 is not accommodated in the recess 19 through the mounting groove 17, but is accommodated in the recess 19 from the outer peripheral side of the flange 13.
The width of the retaining portion 22 can be set to be considerably larger than the width of the extending portion 21. This makes it possible to improve the retaining function of the retaining portion 22.

Further, in this embodiment, since the retaining portion 22 is housed in the recess 19 without protruding from the flange 13,
Since the retaining portion 22 is caught by another member, the extending portion 21
There is no possibility that a problem such as the forcibly being pulled out of the mounting groove 17 will occur.

Further, when the seal member 20 is mounted, since it is only necessary to perform a simple work of extending the extension portion 21 and fitting it from the outside, the protrusion provided on the seal member is provided on the narrow side wall of the seal groove. The operability is superior to the case of pushing it into the hole.

<Other Embodiments> The present invention is not limited to the embodiments described with reference to the above description and the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention.

(1) Sides of the extending portion 21 and the narrow opening 1
7A may be tapered, and in this case, the extension portion 21 can be easily fitted into the attachment groove 17 without impairing the function of restricting the extension portion 21 from coming off the attachment groove 17.

(2) In the above embodiment, the means for reducing the width of the opening 17A has a structure in which the projecting portions 18 are projected from both sides. However, according to the present invention, only one side is provided. The opening may be narrowed by projecting the projecting portion.

(3) In the above embodiment, the case where the recess 19 for accommodating the retaining portion 22 is provided has been described. However, according to the present invention, the retaining portion may be configured to project to the outside of the flange. it can.

(4) In the above embodiment, the case where the concave portion 19 is opened on the outer peripheral surface of the flange 13 has been described. However, according to the present invention, the concave portion is not opened on the outer peripheral surface of the flange but on the abutting surface. It may be configured to be opened.

(5) In the above-described embodiment, the case where the mounting groove 17 and the extending portion 21 are provided on the outer peripheral side of the seal groove 16 and the seal member 20 has been described. Alternatively, the mounting groove 17 and the extending portion 21 may be provided on the outer peripheral side.

(6) In the above embodiment, the case where the seal groove 16 is formed as a means for mounting the seal member 20 on the flange 13 has been described. However, according to the present invention, the seal groove 16 is not limited to the groove but may be, for example, the outer circumference of the flange. The present invention can also be applied to a case where a step having an L-shaped cross section is provided along the line and a seal member is attached thereto.

(7) In the above embodiment, the case where the seal mounting member is the panel mounting type connector 10 has been described, but the present invention can be applied to seal mounting members other than the panel mounting type connector.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing a state in which a seal member is removed.

FIG. 3 is a partially enlarged perspective view showing a state in which a seal member is attached.

FIG. 4 is a partially enlarged plan view showing a state in which a seal member is being attached.

FIG. 5 is a partially enlarged plan view showing a state in which a seal member is attached.

FIG. 6 is a partially enlarged cross-sectional view showing a state in which a seal member is attached.

FIG. 7 is an external perspective view of a conventional example.

FIG. 8 is a partially enlarged sectional view of a conventional example.

[Explanation of symbols]

 10 ... Panel mount type connector (seal mounting part) 15 ... Abutting surface 17 ... Mounting groove 20 ... Sealing member 21 ... Extending part 22 ... Preventing part

Claims (2)

[Claims] 1. A seal mounting component, wherein an elastically deformable seal member is mounted on an abutting surface of a mating component, wherein the seal member is integrally formed with an extension portion protruding laterally, and A wide retaining part is formed at the tip of the protrusion,
In the seal mounting component, a mounting groove into which the extending portion can be fitted is formed, and an opening portion of the mounting groove is formed to have a width narrower than that of the extending portion, and the mounting groove of the extending portion is connected to the mounting groove. The sealing member mounting structure is characterized in that, at the time of fitting, the extending portion is stretched and thinned so as to pass through the opening of the mounting groove. 2. The seal member mounting structure according to claim 1, wherein the seal mounting portion is formed with a recess for accommodating the retaining portion when the seal member is mounted.