JPH1127838A - Cable protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut out protectors at a higher yield from a material while lowering the hitting sound level by forming the protector for preventing production of hitting sound when a cable hits a car body such that the protector has a square cross-section perpendicular to the axis of the cable. SOLUTION: The protector 5 has a square cross-section perpendicular to the axis of a cable. The sound level is 56.9 dB when the protector 5 having a square cross-section abuts, on the side face thereof, against a floor panel 2 and the sound level is 54.1 dB when the protector 5 abuts, at the corner part thereof, against the floor panel 2. In other words, silence in the cabin can be enhanced using a protector 5 having a square cross-section. Since a plurality of protectors 5 can be cut out from a planar material contained in a frame using a parallel cross cutter, no gap is required between adjacent protectors 5 and thereby the yield can be increased while reducing the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable protector attached to a cable provided on a vehicle body.

[0002]

2. Description of the Related Art In a vehicle body, an opener cable for unlocking a trunk lid, a power supply cable, and the like are disposed in a space under the floor of a vehicle compartment. When these cables are hit against the vehicle body due to vibrations during running or the like, a tapping sound is generated, resulting in noise. Therefore, a tapping sound is prevented from being generated by attaching a protector to the outer periphery of these cables. For example, a protector having a circular cross section having a diameter of 20 mm is attached to an opener cable having a diameter of 5 mm.

[0003]

By the way, the noise reduction in the engine and the tire noise during running or the improvement of the noise insulation technology in recent years have increased the quietness of the vehicle interior. For this reason, the tapping sound generated when the cable disposed under the floor is hit against the vehicle body has a relatively large effect on the quietness of the cabin, and it is necessary to further reduce the tapping sound. Has occurred.

Conventionally, as shown in FIG. 3 (B), a plurality of protectors 5 ′ having a circular cross section are cut out from a plate-like material 10 housed in a frame 9 using a plurality of cylindrical cutters 12. However, it is necessary to secure an interval between the cutters 12, and there is a gap between the adjacent protectors 5 '. Therefore, there is a limit in improving the yield of the material and reducing the cost.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a protector having a lower hitting sound pressure level when the protector hits a vehicle body such as a floor panel and a higher yield when cutting from a material.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a protector which is attached to a cable disposed on a vehicle body so as to prevent a tapping sound when the cable hits the vehicle body. Was formed so that the shape of the cross section perpendicular to the cable axis was quadrangular.

In this case, the sound pressure level of the tapping sound when the protector hits the vehicle body is lower than that of the protector having a circular cross section. In addition, a plurality of protectors can be cut from a plate-like material without leaving a gap between adjacent protectors, thereby improving yield and reducing costs.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a side sill of a vehicle body, and a trunk lid is provided in a space surrounded by the side sill 1, a floor panel 2 joined to the side sill 1, and an interior material 3 on the floor panel 2. An opener cable (hereinafter, simply referred to as a cable) 4 for releasing the lock is provided.

On the outer periphery of the cable 4, urethane foam or E
Protectors 5 made of a flexible material such as PDM are mounted at appropriate intervals so that the cables 4 do not directly hit the floor panel 2 or the like. Therefore, even if the cable 4 shakes due to the vibration of the vehicle body during running or the like, the cable 4 is not hit against the floor panel 2 or the like, and the tapping sound does not occur. In addition, the sound pressure level is reduced, and the quietness in the vehicle interior is improved.

In the present embodiment, the protector 5 has a rectangular cross section perpendicular to the cable axis. A protector 5 having a square cross section with a side length of 18 mm and a diameter of 2
A protector with a circular cross section of 0 mm and a diameter of 5 m each
m was applied to the floor panel 2 under the same conditions, and the sound pressure level of the tapping sound was measured. As a result, the protector 5 ′ having a circular cross section had a sound pressure level of 59.8 dB, whereas the protector 5 ′ had a square cross section. The protector 5 is moved in the direction of the arrow as shown in FIG.
2B, and reached 54.1 dB when moved in the direction of the arrow and hit the floor panel 2 at the corner as shown in FIG. 2B. The material of the protector 5 used for measuring the sound pressure level is urethane foam. As described above, the use of the protector 5 having a square cross section can further improve the quietness of the vehicle interior.

In the present embodiment, as shown in FIG. 3A, a plurality of protectors 5 are cut out from a plate-shaped material 10 housed in a frame body 9 using a cross-girder-shaped cutter 11. In this case, since there is no need to leave a gap between the adjacent protectors 5, the yield of the material can be improved and the cost can be reduced.

When the edge of the rectangular cross section of the protector 5 is corrugated as shown in FIGS. 4A and 4B, the edge of the protector 5 is corrugated. Even when the vehicle hits the vehicle body, it does not hit on a flat surface, so that the sound pressure level drops to the same level as when hitting on a corner.

[0013]

According to the present invention, the sound pressure level of the tapping sound when the protector hits the vehicle body can be made lower than in the case of the protector having a circular cross section.
The quietness in the cabin is further improved.

Further, a plurality of protectors can be cut out of a plate-like material without leaving a gap between adjacent protectors, so that the yield can be improved and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle body showing a cable arranged on a floor panel.

FIGS. 2A and 2B are explanatory diagrams showing an aspect in which a protector hits a floor panel. FIGS.

FIGS. 3A and 3B are perspective views showing a plate material and a cutter for cutting a protector from the plate material;

FIGS. 4A and 4B are cross-sectional views showing another embodiment of a cross-sectional shape of a protector having a rectangular cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side sill 2 Floor panel 3 Interior material 4 Opener cable (cable) 5 Protector

Claims (1)

[Claims] 1. A protector, which is attached to a cable disposed on a vehicle body to prevent a tapping sound when the cable hits the vehicle body, is formed so that a cross-section perpendicular to the cable axis becomes quadrangular. A cable protector characterized by: