JPH0667205U - Grommet for wiring - Google Patents

Abstract

(57) [Summary] [Objective] To improve a wiring grommet so that the tape 4 wound around the sleeve 3d of the grommet is prevented from peeling off. [Configuration] The vicinity of the tip portion of (A) the sleeve 3d as shown in FIG. 'Constitute a double tube shape, provided with inner cylinder 3d ₂ and the outer cylinder 3d _1. Winding the tape 4 to the 'sleeve 3' (B) Grommet 3 as shown in FIG, pressing the tape 4 is folded back to the outer cylinder 3d _1, to prevent peeling of the tape wound.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grommet used for protecting an electric wire and waterproofing the opening when the electric wire is inserted into an opening formed in a steel plate for wiring.

[0002]

[Prior art]

This type of grommet is generally composed of a material having rubber-like elasticity. Fig. 3 shows a conventional example of a wiring grommet used when inserting a wire bundle into an opening of a vehicle exterior plate, and is a side view of the above-mentioned vehicle exterior plate cut and drawn. It represents a state where it is not passed. The grommet 3 of this conventional example is formed by molding synthetic rubber, and the flange 3a is integrally connected. A ring groove 3b is provided on the outer peripheral surface of the flange, and is fitted to the inner peripheral edge of the wiring opening 1a of the vehicle body exterior plate 1. An electric wire insertion hole 3c for inserting the electric wire bundle 2 is penetrated through the grommet 3, and a periphery of an opening portion on one side (the right side in the drawing) of the electric wire insertion hole 3c projects in a cylindrical shape. The sleeve 3d is formed. The reason why the sleeve 3d as described above is provided will be described below. FIG. 4 shows a state in which the conventional wiring grommet shown in FIG. 3 is attached to the opening of the vehicle exterior plate, the wire bundle is inserted through the wire insertion hole, and the tape is wrapped around the sleeve. FIG. When the wire bundle 2 is inserted into the sleeve 3d and the tape 4 is wound around the sleeve 3d and tightened, the synthetic rubber sleeve 3d is pressed against the wire bundle 2 to perform a waterproof function. There are various factors for the quality of the waterproof effect by the grommet 3, but fitting relationship between the inner diameter phi ₁ of the wire insertion holes 3c of the sleeve 3d which is shown in Figure 3, the outer diameter phi ₂ of the wire bundle 2 This is one of the major factors. If this fitting is loose, the waterproof effect cannot be obtained unless it is tightened with the tape 4. However, if this fitting is tight, it is difficult to insert the wire bundle 2 into the wire insertion hole 3c.

[0003]

[Problems to be solved by the device]

 Regarding the degree of fitting between the wire insertion hole 3c and the wire bundle 2 described above with reference to FIG. 3, the wire bundle 2 should be fitted as closely as possible within the range in which the wire bundle 2 can be inserted, and then, as shown in FIG. Wrapping 4 is the most reasonable procedure in practice. A vinyl adhesive tape is generally used as the tape 4. However, when the vinyl adhesive tape is wrapped around, there is a problem that the terminal on the winding end side comes off. The tape peeling problem can be prevented by applying a special tape end treatment such as tying it with a thread or wire from the end of the winding of the vinyl adhesive tape, but the binding agent (thread, wire, etc.) Since it has to be used, the number of components increases, which complicates the work process and work management, and increases the manufacturing cost. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a grommet for wiring that does not require a separate binding member and can prevent tape peeling by a simple operation. .

[0004]

[Means for Solving the Problems]

 In order to achieve the above purpose (prevent tape peeling), the configuration of the wiring grommet according to the present invention is such that the wire insertion hole penetrates and at least one opening of the wire insertion hole is formed. In the wiring grommet protruding in a sleeve shape, the vicinity of the tip of the sleeve-like portion is a double cylinder, and the outer cylinder forming the double cylinder can be folded back to the outside. It is characterized by.

[0005]

[Action]

 According to the above configuration, the vicinity of the tip of the sleeve-like portion is a double cylinder, and the outer cylinder can be folded back to the outside. When pressed down, peeling of the tape is prevented. However, the above-mentioned work can be performed quickly and easily by a simple operation of folding back the outer cylinder of the double-cylindrical part, and does not require any additional binding member, thus significantly increasing the manufacturing cost. There is no fear.

[0006]

【Example】

FIG. 1 shows an embodiment of the present invention, (A) is a partial sectional view of a grommet mounted in an opening of a vehicle exterior plate, and (B) is a view for explaining the action and effect of the above embodiment. FIG. The present embodiment has been improved by applying the present invention to the conventional example shown in FIG. 3, and the components denoted by the same reference numerals as those in FIG. 3 are the same or similar components as those in the conventional example. . Grommet 3 of the present embodiment ', the sleeve 3d' near the tip portion of the molded double tube shape, the outer cylinder 3d ₁ and the inner cylinder 3d ₂ is provided. When the outer cylinder 3d ₁ is folded back as shown by the arrow a, the tape 4 can be pressed to prevent peeling as shown in FIG. FIG. 2 is a perspective view showing a state in which the outer cylinder in the above-described embodiment is folded back and the wound tape is held down.

[0007]

[Effect of device]

 When the present invention is applied, the vicinity of the tip of the sleeve-shaped portion is a double cylinder, and the outer cylindrical portion can be folded back to the outside. When pressed down, peeling of the tape is prevented. However, the above-mentioned work can be performed quickly and easily by a simple operation of folding back the outer cylinder of the double-cylindrical part, and does not require any additional binding member, thus significantly increasing the manufacturing cost. It has an excellent practical effect without fear.

[Brief description of drawings]

1 shows an embodiment of the present invention, (A) is a partial sectional view of a grommet mounted in an opening of a vehicle exterior plate,
FIG. 3B is a sectional view for explaining the operation and effect of the above embodiment.

FIG. 2 is a perspective view showing a state in which the outer cylinder in the above embodiment is folded back and the wound tape is held down.

FIG. 3 is a side view showing a conventional example of a wiring grommet used when inserting a wire bundle into an opening of a vehicle body exterior plate, with the vehicle body exterior plate being cut and drawn. It represents the state not.

FIG. 4 is an explanatory view showing a state in which the conventional wiring grommet shown in FIG. 3 is attached to an opening of a vehicle body exterior plate, a wire bundle is inserted into the wire insertion hole, and a tape is wrapped around a sleeve. Is.

[Explanation of symbols]

1 ... Body exterior plate, 1a ... Wiring opening, 2 ... Wire bundle, 3,
3 '... Grommet, 3a ... Flange, 3b ... Ring groove,
3c ... wire insertion hole, 3d, 3d '... sleeve, 3d ₁ ...
Outer cylinder, 3d ₂ … Inner cylinder, 4… Vinyl adhesive tape, φ ₁ …
Inner diameter of wire insertion hole, φ ₂ … Outer diameter of wire bundle.

Claims (1)

[Scope of utility model registration request] 1. A wiring grommet in which an electric wire insertion hole penetrates and at least one opening of the electric wire insertion hole projects in a sleeve shape, wherein a vicinity of a tip of the sleeve-shaped portion is a double cylinder shape. A wiring grommet, characterized in that the outer tubular portion forming the double tubular portion can be folded back outward.