JP2004245271A - Annular seal and seal member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an annular seal and a seal member, which can be easily manufactured. <P>SOLUTION: V-shaped notches 12 are formed in a side edge 11a of an inner surface of the belt-like seal member 11, and therefore the belt-like seal member 11 can be easily shaped in conformity with a shape of a member 30 to be sealed. The member can be surely joined with labyrinth connections 13 formed at front and rear ends 11f, 11r of the belt-like seal member 11 and can be used as the annular seal member 11. The belt-like seal member 11 is adhered to the sealed member 30 by an adhesive layer 22 provided on a surface for contacting with the sealed member 30 and can surely carry out seal without shifting. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an annular seal and a seal member.
[0002]
[Prior art]
A conventional seal member shown in FIGS. 13A and 13B is disclosed (for example, see Patent Document 1).
In such a seal member 100, a notch 102 for division is formed along the longitudinal direction at a substantially central portion in the width direction of the belt-shaped member 101 shown in FIG. Is divided into a first strip 101a and a second strip 101b.
When the dividing cut 102 is opened and deformed into a polygonal ring as shown in FIG. 13B, bent cuts 104 are formed on the inner peripheral side and the outer peripheral side of the corner 103 serving as a corner. ing. End cuts 105 are formed at both ends of the band-shaped member 101 and extend from the outer periphery of the end to the vicinity of both ends of the cut 102 for division. Thereby, at the time of use, the first band-shaped portion 101a and the second band-shaped portion 101b are expanded to form a polygonal ring.
[0003]
[Patent Document 1]
JP-A-2001-124212 (page 4, FIG. 1)
[0004]
[Problems to be solved by the invention]
By the way, in the sealing member 100 as described above, it is necessary to make the notch 102 for division in the center of the thin band-shaped member 101, which is troublesome. In addition, care must be taken because the length of the dividing cut 102 must be adjusted to the size of the member to be sealed by the seal member 100.
[0005]
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an annular seal and a seal member that can be easily manufactured.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, an annular seal according to the present invention is an annular seal using a band-shaped seal member in a ring shape along a member to be sealed, as described in claim 1, wherein A V-shaped notch is provided at least at the inner peripheral surface side edge when the seal member is formed in an annular shape, and a labyrinth joint for connecting the band-shaped seal member in an annular shape is provided at a front end and a rear end of the band-shaped seal member. It is characterized by being provided at the end.
[0007]
In the annular seal configured as described above, the V-shaped notch is provided at the inner peripheral side edge of the band-shaped seal member, so that the band-shaped seal member can easily conform to the shape of the member to be sealed. Can be shaped.
Further, the band-shaped seal member can be reliably joined by labyrinth joints provided at both front and rear ends, and can be used as an annular seal material.
[0008]
In the annular seal according to the present invention, as described in claim 2, in the annular seal according to claim 1, an adhesive layer is provided on a surface of the band-shaped seal member that contacts the member to be sealed. It is characterized by.
[0009]
In the annular seal configured as described above, since the adhesive is adhered to the member to be sealed by the adhesive layer, the seal can be surely sealed without shifting.
[0010]
Further, the seal member according to the present invention is a band-shaped seal member interposed between the members to be sealed and sealing the members to be sealed, as described in claim 3, wherein A large number of notches are provided at predetermined intervals along at least one edge in the width direction along the longitudinal direction.
[0011]
In the sealing member configured as described above, since a number of notches are provided along the longitudinal direction at the edge in the width direction, the sealing member can have any shape along the shape of the member to be sealed.
[0012]
According to a fourth aspect of the present invention, there is provided a seal member according to the third aspect, wherein an adhesive layer is provided on a surface of the seal member in contact with the member to be sealed. And
[0013]
In the sealing member configured as described above, since the sealing member is adhered to the member to be sealed by the adhesive layer, the sealing can be surely performed without shifting.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of an annular seal and a seal member according to the present invention will be described in detail with reference to the drawings. FIG. 1A is a perspective view showing a process of forming an annular seal according to the present invention, FIG. 1B is a perspective view showing a first embodiment of the annular seal according to the present invention, and FIGS. FIG. 7 is a perspective view showing another example of the part, FIG. 7 is a sectional view showing an adhesive layer, and FIG. 8 is a perspective view showing a state in which an annular seal is used for an electric connection box.
[0015]
As shown in FIG. 1, an annular seal 10 according to the present invention is a seal in which a band-shaped seal member 11 is annularly used along an electric connection box main body 31 (see FIG. 8) which is a member 30 to be sealed.
The band-shaped seal member 11 is provided with a V-shaped notch 12 at least on the inner peripheral side edge 11a when the band-shaped seal member 11 is formed into an annular shape. For example, when the electric connection box main body 31 has a rectangular cross section, as shown in FIG. 1A, the cutout portion 12 is located in a range corresponding to a corner 32 of the electric connection box main body 31 (see FIG. 8). By providing and bending the band-shaped sealing member 11 in the notch portion 12, a shape corresponding to the electric connection box main body 31 can be obtained. Therefore, when the cross-section of the electric connection box main body 31 is circular or elliptical or the like, it is desirable that the notches 12 be provided at predetermined intervals over the entire length of the band-shaped seal member 11.
[0016]
A labyrinth joint 13 is provided at the front end 11f and the rear end 11r of the band-shaped seal member 11 to connect the band-shaped seal member 11 in a ring shape. The shape of the labyrinth joint 13 is as shown in FIG.
That is, as shown in FIG. 1A, the front end 11f and the rear end 11r are divided into halves from the center in the width direction of the band-shaped seal member 11, and the convex portions 14a and 14b are respectively formed in the concave portions 15a and 15b on the other side. Protrusions 14a, 14b and recesses 15a, 15b are provided correspondingly.
[0017]
As another shape of the labyrinth joint 13, as shown in FIG. 2, front and rear tapered surfaces 16f and 16r are provided at the front end 11f and the rear end 11r.
Alternatively, as shown in FIGS. 3 (A) and (B), FIGS. 1 and 2 can be combined to provide tapered surfaces 17f, 17r on the convex portions 14a, 14b and the concave portions 15a, 15b.
As shown in FIG. 4, a convex portion 18 is provided from one of a front end 11 f and a rear end 11 r of the band-shaped seal member 11, and a concave portion 19 having a shape to which the convex portion 18 is fitted is provided on the other. Alternatively, as shown in FIG. 5, the convex portion 20 may have a shape in which the distal end is widened, and the concave portion 21 may have a shape in which the convex portion 20 is fitted.
Further, as shown in FIG. 6, the front end 11f and the rear end 11r of the band-shaped seal member 11 may be shaped to be engaged with each other.
[0018]
As shown in FIG. 7, it is desirable to provide an adhesive layer 22 on the surface of the strip-shaped seal member 11 that contacts the electrical connection box main body 31.
Here, a separate member such as a double-sided tape may be provided as the adhesive layer 22, or an adhesive such as an adhesive may be applied to the belt-shaped seal member 11.
[0019]
FIG. 8 shows a state in which the annular seal 10 is attached to the electric junction box main body 31 which is the electric junction box main body 31. The electric connection box main body 31 is a member on a box having a rectangular cross section and an open top, and a collar 34 is provided at an intermediate position in the height direction of the outer peripheral surface 33 over the entire circumference. At four corners of the collar 34, mounting holes 35 for mounting the electric connection box main body 31 to, for example, a vehicle body are provided.
The annular seal 10 is provided on the upper side of the collar 34 along the outer peripheral surface 33 of the electric connection box main body 31, and is prevented from falling off by the adhesive layer 22 provided on the lower surface of the annular seal 10. I have.
[0020]
An electric component (not shown) is housed inside the electric connection box main body 31, and a wire harness 37 connected to the electric component via the grommet 36 is outgoing, and a lid (not shown) is covered from above.
Then, with the lower end of the lid pressed against the annular seal 10, the lid is locked by a locking projection 38 projecting from the outer peripheral surface 33 of the electric connection box main body 31. As a result, the space between the electric connection box main body 31 and the lid is sealed to prevent intrusion of moisture and the like.
[0021]
Therefore, when forming the annular seal 10 from the band-shaped seal member 11, as shown in FIG. 1A, the band-shaped seal member 11 is bent at the notch 12, so that the electric connection box main body 31 is formed. The annular seal 10 is manufactured by joining the labyrinth joints 13 provided at the front end and the rear end of the band-shaped seal member 11 in a corresponding shape. Then, the adhesive layer 22 is provided on the surface that comes into contact with the electric connection box main body 31.
Alternatively, it is also possible to provide the adhesive layer 22 in the case of the band-shaped seal member 11 and then make the band-shaped seal member 11 annular to form the annular seal 10. At this time, when the adhesive layer 22 such as a double-sided tape is attached, it is preferable to provide a cutout in the adhesive layer 22 in a region corresponding to the bent portion, similarly to the band-shaped seal member 11. In this case, the annular seal 10 can be formed while attaching the belt-shaped seal member 11 to the collar 34 of the electric connection box main body 31.
[0022]
As described above, in the above-described annular seal 10, the V-shaped notch 12 is provided at the edge on the inner peripheral surface side. Can be 10.
Further, since the labyrinth connection portions 13 are provided at the front and rear ends 11 f and 11 r of the band-shaped seal member 11, it can be used as the annular seal 10.
Further, since the band-shaped seal member 11 is provided with the adhesive layer 22, the band-shaped seal member 11 is fixed to the member to be sealed 30 and can be reliably sealed.
[0023]
Note that the annular seal 10 of the present invention is not limited to the above-described embodiment, and appropriate modifications, improvements, and the like can be made.
For example, in the above-described embodiment, the adhesive layer 22 is provided on one surface of the band-shaped seal member 11, but may be provided on both surfaces. In this case, since it is fixed to both sealed members to be sealed, sealing can be performed more reliably.
[0024]
Further, as shown in FIG. 9A, after the band-shaped seal member 11 is formed into a ring shape, the reinforcing member 23 can be attached to the outer peripheral surface 10a of the ring-shaped seal 10.
In particular, when provided on the outer peripheral surface corresponding to the notch portion 12 provided in the case of the band-shaped seal member 11, tearing at the bent portion can be prevented.
Considering that the annular seal 10 is pressed when sealing between the members 30 to be sealed, the reinforcing member 23 is slightly thinner than the thickness of the annular seal 10 as shown in FIG. Is preferred.
[0025]
Next, the seal member 40 according to the present invention will be described. FIG. 10 is a perspective view showing an embodiment of a seal member according to the present invention, and FIGS. 11 (A) and 11 (B) are plan views showing examples of arrangement of notches.
The same parts as those in the above-described annular seal 10 are denoted by the same reference numerals, and redundant description will be omitted.
[0026]
As shown in FIG. 10, the seal raw material 41 of the seal member 40 to be interposed between the members to be sealed and sealed is in a band shape, and at least one edge portion of the seal member 40 in the width direction. A large number of notches 12 are provided at predetermined intervals in the longitudinal direction in 41a.
Therefore, the notches 12 may be provided at regular intervals in the longitudinal direction, may be provided densely in places where the curvature is large, and may be provided sparsely in the linear part according to the shape of the member 30 to be sealed. .
[0027]
In addition, the notch 12 can be provided at both edges 41a and 41b. That is, as shown in FIG. 11 (A), it can be provided symmetrically at both edges 41a and 41b. Alternatively, they can be arranged alternately as shown in FIG.
The shape of the cutout portion 12 can be V-shaped as shown in FIG. 12A, but a rounded portion 42 is provided at the tip as shown in FIG. By providing the R portion 43 at the tip end as shown in FIG.
[0028]
Further, a V-shaped notch 12 may be provided at the edge portion on the compression side when the seal member 40 is bent, and a slit may be simply provided on the edge portion on the tension side.
Further, similarly to the case of the annular seal 10 described above, it is desirable to provide an adhesive layer 22 on the surface of the seal member 40 that contacts the member 30 to be sealed.
Here, a separate member such as a double-sided tape may be provided as the adhesive layer 22, or an adhesive such as an adhesive may be applied to the belt-shaped seal member 11.
[0029]
As described above, according to the seal member 40 described above, since the notch portion 12 is provided, it can be easily bent, and can be used according to the shape of the member to be sealed 30 having an arbitrary shape.
Further, when the adhesive layer 22 is provided, it is possible to prevent the adhesive layer 22 from falling off from the member to be sealed 30 and to reliably seal it.
[0030]
Note that the seal member 40 of the present invention is not limited to the above-described embodiment, and appropriate modifications, improvements, and the like can be made.
That is, by providing the labyrinth joints at the front and rear ends of the seal member 40, the above-described annular seal 10 can be obtained.
[0031]
【The invention's effect】
As described above, according to the annular seal according to the present invention, as described in claim 1, the shape can be easily conformed to the shape of the member to be sealed, and the front and rear ends of the band-shaped seal member Can be securely joined by the labyrinth joining portion provided in the above, and can be used as an annular sealing material.
Further, according to the seal member of the present invention, as described in claim 3, since a large number of notches are provided along the longitudinal direction at the edge in the width direction, the shape of the member to be sealed can be improved. Can be made into any shape and can be reliably sealed.
[Brief description of the drawings]
FIG. 1A is a perspective view showing an annular seal according to the present invention in the process of being manufactured, and FIG. 1B is a perspective view showing an embodiment of an annular seal according to the present invention.
FIG. 2 is a perspective view showing another example of a labyrinth joint.
FIGS. 3A and 3B are perspective views showing another example of a labyrinth joint.
FIG. 4 is a perspective view showing another example of a labyrinth joint.
FIG. 5 is a perspective view showing another example of a labyrinth joint.
FIG. 6 is a perspective view showing another example of a labyrinth joint.
FIG. 7 is a sectional view showing an adhesive layer.
FIG. 8 is a perspective view showing a state where an annular seal is used for an electric junction box.
9A is a perspective view showing a reinforcing member provided on the outer peripheral surface of the annular seal, and FIG. 9B is a sectional view of the annular seal.
FIG. 10 is a perspective view showing one embodiment of a seal member according to the present invention.
FIGS. 11A and 11B are plan views showing examples of the arrangement of notches.
FIGS. 12A to 12C are plan views showing examples of the shape of a notch.
FIG. 13A is a plan view showing a conventional seal member before use, and FIG. 13B is a plan view showing a state during use.
[Explanation of symbols]
Reference Signs List 10 annular seal 11 band-shaped seal member 11a inner peripheral side edge 11f front end 11r rear end 12 notch 13 labyrinth joint 22 adhesive layer 30 sealed member 40 seal member

Claims (4)

An annular seal using a band-shaped seal member in an annular shape along the member to be sealed,
A V-shaped notch is provided at least at the inner peripheral surface side edge when the band-shaped seal member is formed in an annular shape, and a labyrinth joining portion that connects the band-shaped seal member in an annular shape is formed of the band-shaped seal member. An annular seal provided at a front end and a rear end. The annular seal according to claim 1, wherein an adhesive layer is provided on a surface of the band-shaped seal member that contacts the member to be sealed. A belt-shaped seal member interposed between the members to be sealed to seal the members to be sealed,
A seal member comprising a plurality of cutouts provided at predetermined intervals along a longitudinal direction at at least one edge in a width direction of the seal member. The seal member according to claim 3, wherein an adhesive layer is provided on a surface of the seal member that contacts the member to be sealed.

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