JPH0613332U - Grommet for cord - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to make the assembly work easy and to make it look good. [Structure] An inner portion 4, an outer portion 5, and a sleeve 6 are provided, and a through hole 10 of a vehicle body 1 is formed on one end surface of the outer portion 5.
A flange 55 that abuts against the edge of the sleeve 5, a fitting recess 54 is provided in the through hole of the outer part 5, and the fitting projection 6 is provided on the sleeve 6.
2 is provided. As a result, when the fitting convex portion 62 of the sleeve 6 is fitted between the fitting concave portion 54 of the outer portion 5 and the inner portion 4 in an interference fit state, the reaction force of the interference fitting causes the outer portion to react. 5. The inner part 4 fitted in the through hole 51 of 5 can be firmly pressed, and the edge of the through hole 10 of the vehicle body 1 into which the outer part 5 is inserted can be firmly clamped together with the collar part 55 of the outer part 5. You can Therefore, the watertightness is excellent, the assembling work is simplified, and the appearance is ordered.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cord grommet for watertightly passing a cord that connects a vehicle lighting device such as a rear combination lamp and a power source through a through hole formed in a vehicle body (wall), and taping is not particularly necessary, and therefore, it is assembled accordingly. The present invention relates to a grommet for a cord, which simplifies the work, improves the appearance, and improves the watertightness.

[0002]

[Prior art]

 Hereinafter, a conventional cord grommet will be described with reference to FIG. In the figure, 1 is a vehicle body as a wall. A circular through hole 10 is opened in the vehicle body 1. In the figure, 2 is a grommet. The grommet 2 is made of synthetic rubber or the like, has a tubular tubular cord insertion portion 20, an outer ring-shaped fitting portion 21, and an annular fitting provided on one end side of the outer circumference of the fitting portion 21. The groove 22 and the connecting portion 23 that flexibly connects the outer fitting portion 21 and the central cord insertion portion 20. In the figure, reference numeral 3 is a cord connecting a vehicle lamp (not shown) such as a rear combination lamp and a power source (not shown). Next, the assembling work of the above-mentioned conventional cord grommet will be described. First, a plurality of cords 3 are inserted into the cord insertion portion 20 of the grommet 2, and the tape 30 is wound around both ends of the cord insertion portion 20 of the grommet 2 and the cord 3. By pressing one end side of the fitting portion 21 of the grommet 2 into the through hole 10 of the vehicle body 1 and fitting the fitting groove 22 of the grommet 2 into the edge of the through hole 10 of the vehicle body 1, the cord 3 is fixed. It can be watertightly passed through the through hole 10 of the vehicle body 1 via the grommet 2. Alternatively, one end of the fitting portion 21 of the grommet 2 is press-fitted into the through hole 10 of the vehicle body 1 and the fitting groove 22 of the grommet 2 is fitted to the edge of the through hole 10 of the vehicle body 1 to form the grommet 2 Is fixed to the vehicle body 1. Then, the cord 3 is inserted into the cord insertion portion 20 of the grommet 2, and the tape 30 is wound around both ends of the cord insertion portion 20 of the grommet 2 and the cord 3 so that the cord 3 passes through the grommet 2. It is possible to make it watertight through the through hole 10 of the vehicle body 1.

[0003]

[Problems to be solved by the device]

 However, since the above-described conventional cord grommet simply inserts the cord 3 into the cord insertion portion 20 of the grommet 2, the cord 3 inserted into the cord insertion portion 20 of the grommet 2 and the grommet. It is necessary to wrap the tape 30 around both ends of the second cord insertion portion 20 for waterproofing. For this reason, there are problems that the assembling work of the grommet 2 is complicated, and that the taping 30 is visible on the outside and the appearance is not good.

An object of the present invention is to provide a grommet for a cord that is easy to assemble, has a good appearance, and has improved watertightness.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention comprises an inner part, an outer part, and a sleeve, and a through hole for passing a cord is provided in the inner part, while the inner part is fitted in the center of the outer part. A through hole through which the cord is inserted, a flange portion that abuts the edge of the through hole of the wall is provided at one end surface of the outer portion, and a through hole through which the cord is inserted is provided at the center of the sleeve, In addition, a fitting convex portion that fits in an interference fit state is provided between the inner portion and the outer portion at the edge of the through hole of the sleeve.

[0006]

[Action]

 According to the present invention, with the above structure, when the fitting convex portion of the sleeve is fitted between the inner portion and the outer portion in an interference fit state, the fitting convex portion of the inner portion and the outer portion and the sleeve are fitted. The inner part fitted in the through hole of the outer part can be firmly pressed by the reaction force of the interference fit with the outer part, and the edge of the through hole of the wall into which the outer part is inserted is connected to the flange part of the outer part. It can be firmly clamped together. As a result, the watertightness of the through hole in the inner part and the cord is firmly maintained without taping for waterproofing, and the flange and outer peripheral surface of the outer part and the edge of the through hole in the wall are secured. Watertightness is also firmly maintained. Moreover, since it is not necessary to apply taping for waterproofing, the assembling work is simplified and the appearance is neatly arranged.

[0007]

【Example】

 Hereinafter, two examples of embodiments of the cord grommet according to the present invention will be described with reference to FIGS. 1 to 8. 1 to 5 show a first embodiment of a cord grommet of the present invention. In the figure, the same symbols as in FIG. 9 indicate the same components. In the figure, 4 is an inner part. The inner portion 4 is made of synthetic rubber such as EPDM (ethylene / propylene rubber) and has a short cylindrical shape. A plurality of through holes 40 for passing the cord 3 through the inner portion 4 are provided at equal intervals in the axial direction of the inner portion 4, and the cord 3 is provided between the outer peripheral surface of the inner portion 4 and the through hole 40. A notch 41 for setting the inside of the through hole 40 is provided in the radial direction of the inner portion 4. The number of the through holes 40 of the inner portion 4 is set to 5, 6, or 8 depending on the number of the cords 3 to pass, for example, as shown in FIGS. 3 (A), (B), and (C). At this time, the outer diameter A of the inner portion 4 is kept the same. The inner diameter of the through hole 40 of the inner portion 4 described above is set to be slightly smaller than or substantially equal to the outer diameter of the cord 3. Further, the above-mentioned cut 41 of the inner portion 4 is formed by cutting the inner portion 4 with a sharp blade such as a razor.

In the figure, 5 is an outer part. The outer portion 5 is made of synthetic rubber, for example, EPDM (ethylene / propylene rubber), and has a substantially circular truncated cone shape in which one end surface has a small circular shape and the other end surface has a large circular shape. Through holes 50, 51, 52 for fitting the inner portion 4 and inserting the cord 3 are provided in the center of the outer portion 5 in the axial direction of the outer portion 5. Of the through holes 50, 51, 52, the inner diameter on the one end portion 50 side is small, the inner diameter on the intermediate portion 51 side is medium, and the inner diameter on the other end portion 52 side is large. A stepped portion 53 is provided between the small diameter portion 50 and the medium diameter portion 51 of the through hole of the outer portion 5 so as to prevent it from coming off. Further, a fitting recess 54 having a substantially semicircular cross section is provided in an annular shape between the medium diameter portion 51 and the large diameter portion 52 of the through hole. On the other end of the outer peripheral surface of the outer portion 5 having a large diameter, a collar portion 55 that comes into contact with the edge of the through hole 10 of the vehicle body 1 is provided. A bead (not shown) having a triangular cross-section is integrally projectingly provided on the surface of the flange portion 55 of the outer portion 5 on the side that contacts the edge of the through hole 10 of the vehicle body 1. A step portion 56 is annularly provided in the large diameter through hole 52 of the outer portion 5. The outer shape of the outer portion 5 from one end portion to the middle portion has an inclined portion with a larger outer diameter so that the outer portion 5 can be easily fitted into the through hole 10 of the vehicle body 1, and then the horizontal portion. Therefore, the outer diameter of the outer portion 5 other than the collar portion 55 is slightly smaller than the inner diameter of the through hole 10 of the vehicle body 1.

In the figure, 6 is a sleeve. The sleeve 6 is made of, for example, a synthetic resin, and has a circular through hole 60 through which the cord 3 is inserted in the center, and a fitting tubular portion 61 that is integrally and annularly provided on one end surface of the edge of the through hole 60. A bulged fitting convex portion 62 that is integrally formed in a protruding shape at the tip of the fitting tubular portion 61, a pressing portion 63 that is integrally formed as an annular protrusion in the inner surface of the fitting tubular portion 61, and the fitting portion It comprises a collar portion 64 integrally provided at the other end of the coupling cylinder portion 61. The outer diameter A of the fitting convex portion 62 is slightly larger than or substantially equal to the inner diameter B of the fitting concave portion 54 of the outer portion 5.

The cord grommet of the present invention in this embodiment has the above-mentioned structure, and the assembling method will be described below. First, the cord 3 is press-fitted into the through hole 40 of the inner portion 4 through the cut 41. At this time, since the cut 41 of the inner portion 4 is formed by cutting with a sharp blade such as a razor, after the cord 41 is set in the through hole 40, the elastic restoring force of the inner portion 4 is used. Since the cut 41 is in close contact, the cord 3 can be kept watertight in the through hole 40. Next, the inner portion 4 passing through the cord 3 is press-fitted into the medium-diameter through hole 51 by passing over the claw portion 54 from the large-diameter through hole 52 side of the outer portion 5. Then, one end of the outer portion 5 having a small diameter is inserted into the through hole 10 of the vehicle body 1, and the collar portion 55 of the outer portion 5 is brought into contact with the edge of the through hole 10 of the vehicle body 1. At this time, since the outer diameter of the portion of the outer portion 5 other than the collar portion 55 is slightly smaller than the inner diameter of the through hole 10 of the vehicle body 1, the outer portion 5 described above can be easily inserted into the through hole 10 of the vehicle body 1. it can.

Then, the fitting convex portion 62 of the sleeve 6 is press-fitted into the fitting concave portion 54 of the outer portion 5 to be fitted in an interference fit state, and the fitting tubular portion 61 of the sleeve 6 is fitted. Is fitted into the large-diameter through hole 52 of the outer portion 5, and the flange portion 64 of the sleeve 6 thereof is fitted into the lump 56 of the outer portion 5. Then, by the reaction force of the interference fit between the fitting concave portion 54 of the outer portion 5 and the fitting convex portion 62 of the sleeve 6, as shown in FIG. The inner portion 4 fitted in the through hole 51 can be firmly pressed inward. On the other hand, the portion of the outer portion 5 outside the fitting groove 56 is pressed outward so that the edge of the through hole 10 of the vehicle body 1 into which the outer portion 5 is inserted can be firmly held together with the flange portion 55 of the outer portion 5. it can. As a result, the watertightness between the through hole 40 of the inner part 4 and the cord 3 is firmly maintained without providing the taping for waterproofing, and the brim part 55 and the outer peripheral surface of the outer part 5 and the vehicle body 1 are transparent. Watertightness with the edge of the hole 10 is also firmly maintained. Moreover, since it is not necessary to apply taping for waterproofing, the assembling work is simplified and the appearance is neatly arranged.

In particular, in this embodiment, since the outer portion 5 is provided with the fitting concave portion 54 having a small inner diameter and the sleeve 6 is provided with the fitting convex portion 62 having a large outer diameter, the fitting convex portion is formed. When 62 is fitted into the fitting recess 54, there is an effect that a click feeling is obtained.

Further, in the cord grommet of this embodiment, since the pressing portion 63 is provided on the sleeve 6, the fitting cylinder portion 61 of the sleeve 6 is fitted into the large-diameter through hole 52 of the outer portion 5. Then, the pressing portion 63 of the sleeve 6 presses the inner portion 4 inward. As a result, the inner portion 4, which is fitted and held in the medium-diameter through hole 51 of the outer portion 5 in an interference fit state, has the pressing portion 63 of the sleeve 6 and the step portion 53 of the outer portion 5 described above. Thus, it is possible to reliably prevent the through hole 50, 51, 52 of the outer portion 5 from coming off.

Further, since the cord grommet of the present invention is composed of three parts of the inner part 4 and the outer part 5, as shown in FIGS. 5 (A), 5 (B) and 5 (C). Even if the inner diameters D1, D2, D3 of the through hole 10 of the vehicle body 1 are different, the inner diameter E of the medium diameter through hole 51 of the outer portion 5 is made constant, and other than the collar portion 55 of the outer portion 5. If the sizes of the outer diameters C1, C2, and C3 of the portion of FIG. The same inner portion 4 can be shared by simply preparing several types of outer portions 5 of different sizes, which reduces the number of components and facilitates component management.

In the above-described embodiment, since the bead (not shown) having a triangular cross section is integrally and annularly provided on the end surface of the large diameter portion of the fitting groove portion 55 of the outer portion 5, the outer portion 5 When the fitting groove portion 55 is fitted to the edge (flange portion 11) of the through hole 10 of the vehicle body 1, the bead 56 thereof is brought into close contact with the vehicle body 1, so that the watertightness is further secured.

In the above-described embodiment, an example in which the cord 3 for connecting the vehicle lighting device such as the rear combination lamp and the power source is water-tightly passed through the through hole 10 formed in the vehicle body 1 is explained. The cord grommet of the present invention can also be used for the one that is watertightly passed through the through hole provided in the wall.

FIGS. 6 to 8 show a second embodiment of the cord grommet of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 5 and 9 denote the same components. In the figure, 11 is a flange portion formed by bending the edge of the through hole 10 of the vehicle body 1 at a right angle. A fitting recess 42 having a semicircular cross section is annularly provided on the outer peripheral surface of the inner portion 4. On the other hand, the inner diameter of the large-diameter through hole 52 of the outer portion 5 is gradually reduced from the other end surface toward the inside. In the figure, 7 is a sleeve, which is made of synthetic resin, for example, and has a ring shape with a circular cross section. The outer diameter F of the sleeve 7 is slightly larger than or substantially equal to the inner diameter G of the fitting recess 42 of the inner portion 4 and the fitting recess 54 of the outer portion 5. Since the cord grommet of the present invention in this embodiment has the above-described structure, it is possible to achieve the same effect as that of the first embodiment.

[0018]

[Effect of device]

 As is clear from the above, the cord grommet of the present invention is easy to assemble, has a good appearance, and has improved watertightness.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a cord grommet according to the present invention and in an assembled state.

FIG. 2 is an exploded view of an outer portion, an inner portion, and a sleeve.

FIG. 3A is a front view of an inner portion having five through holes through which cords pass, FIG. 3B is a front view of an inner portion having six through holes through which cords pass, and FIG. It is a front view of an inner part with eight holes.

FIG. 4 is a partially enlarged cross-sectional view of a state in which an outer portion is attached to a vehicle body.

5A is a cross-sectional view of the vehicle body and the outer portion when the through hole of the vehicle body is small, FIG. 5B is a cross-sectional view of the vehicle body and the outer portion when the through hole of the vehicle body is inside, and FIG. [Fig. 4] is a cross-sectional view of the vehicle body and the outer portion when the through hole of the vehicle body is large.

FIG. 6 is a cross-sectional view showing a second embodiment of the cord grommet according to the present invention in an assembled state.

FIG. 7 is an exploded view of an outer portion, an inner portion, and a sleeve.

FIG. 8 is a partially enlarged sectional view showing a state in which an outer portion is attached to a vehicle body.

FIG. 9 is a cross-sectional view showing a conventional cord grommet.

[Explanation of symbols]

1 ... Vehicle body (wall), 10 ... Through hole, 11 ... Edge (flange portion), 3 ... Cord, 4 ... Inner portion, 40 ... Through hole, 42
... fitting recess, 5 ... outer part, 50, 51, 52 ... through hole, 54 ... fitting recess, 55 ... flange part, 6 ... sleeve, 62
… Mating projections and sleeves.

Claims (2)

[Scope of utility model registration request] 1. A cord grommet for watertightly passing a cord through a through hole formed in a wall, comprising an inner portion, an outer portion, and a sleeve, the inner portion having a through hole for passing the cord, and the outer portion. Has a through hole that fits the inner portion provided at the center and through which the cord is inserted, and a flange portion that abuts on an edge of the through hole of the wall provided at one end surface, and the sleeve is A through hole through which the cord is provided in the center, and a fitting convex portion that fits in an interference fit between the inner portion and the outer portion provided at the edge of the through hole. And grommet for cord. 2. A cord grommet for watertightly passing a cord through a through hole formed in a wall, comprising an inner portion, an outer portion and a sleeve, wherein the inner portion has a through hole for passing the cord, and the outer portion. Has a through hole that fits the inner portion provided at the center and through which the cord is inserted, and a flange portion that abuts on an edge of the through hole of the wall provided at one end surface, and the sleeve is A grommet for a cord, which has a ring shape which is inserted through the cord and which is fitted between the inner portion and the outer portion in an interference fit state.