JP2003057144A - Vibration testing apparatus and support tool for vibration test - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the structure for supporting an electric wire or the like from both sides versatile and inexpensive. SOLUTION: An adjuster 25 as a support tool 13 for vibration test for supporting the electric wire 12 or the like in an environment chamber 11 from both sides is installed at, for example, the upper and lower ends of a frame part 23. It is possible to easily arrange and fix the support jig 13 for vibration test at any location in the environment chamber 11 according to the length of the electric wire 12 or the like while controlling temperature, humidity, etc., in the environment chamber 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration test apparatus and a vibration test support jig for vibrating an intermediate portion of an electric wire or the like.

[0002]

2. Description of the Related Art As wire harnesses for automobiles, products that can withstand vibration are required.
A vibration test is performed in advance to evaluate the durability and the like (FIGS. 7 and 8).

{First Prior Art} As shown in FIG. 7, a vibration testing apparatus according to a first prior art has a wire harness 2 stretched over a support 1 in the shape of a tower, and parts attached to the wire harness 2. (For example, clips and connectors)
3, the vibrator 5 of the vibrating device 4 arranged inside the support 1.
The vibration test was performed by vibrating the component 3 with the vibrator 5 in a state of being fixed to.

The fixing of the component 3 to the vibrator 5 is supported by a method that is as realistic as possible on the assumption that the component 3 is actually mounted in an automobile or the like. For example, part 3
When a clip or a clamp is used as the above, it is attached to the vibrator 5 so that the clip, the clamp, or the like imitates a portion to be attached to an automobile or the like. This makes it possible to perform a vibration test while realizing a situation close to the actual application state.

Here, the support body 1 is prepared by assembling various members such as metal columns according to the length of the wire harness 2 to be tested and the like.

Incidentally, the support 1 is constituted only by combining metal columns and the like, and is not in a hermetically sealed structure but in a non-airtight state inside and outside thereof.

{Second Prior Art} As shown in FIG. 8, the vibration testing apparatus according to the second prior art has an inner wall of an airtight environmental tank 7 for setting a special environment of temperature and humidity different from the outside air. Two plate-shaped dedicated fixing panels 8 are arranged to be opposed to each other and fixed, and a supporting and fixing member 9 made of metal or the like is fixed to the dedicated fixing panel 8 by bolting, and the supporting and fixing member 9 is fixed. Both ends of the wire harness 2 were attached to. Then, in this state, the component 3 of the wire harness 2 is fixed to the vibrator 5 of the vibrating device 4 installed in the environment tank 7, and in this state, the component 3 is vibrated by the vibrator 5 to perform a vibration test. I was going.

It should be noted that the support / fixing member 9 may be provided on the assumption that the wire harness 2 is bound at the binding point at the binding point when the wire harness 2 is actually mounted on an automobile or the like. Support in a way that is as close to reality as possible. For example, when the binding point is bound with a clip or a clamp, the clip or the clamp is actually used to bind with the support fixing member 9.

[0009]

[Problems to be Solved by the Invention] {Problems of the first prior art} In the first prior art, the support 1 had to be assembled in accordance with the size of each wire harness 2.
The number of man-hours for that has become enormous.

Further, since it is in a non-airtight state, the temperature, humidity and the like become the same as the outside air, and it is not always possible to realize the environment as it is actually installed in an automobile or the like.

In addition, the tower-like support 1 not only looks bad, but also vibrates in a non-airtight state.
Nothing else could be placed nearby, requiring a larger test space than hermetic.

{Problems of the Second Prior Art} On the other hand, the second
In the case of the conventional technique, since the environment tank 7 has airtightness, it is possible to freely set the environment such as temperature and humidity. However, the support fixing member 9 according to the size of each wire harness 2 is used as the environment. It is necessary to use an expensive dedicated vibration test device applied to the tank 7.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration test apparatus and a vibration test support jig which are inexpensive and whose environment settings such as temperature and humidity can be freely set.

[0014]

[Means for Solving the Problems] In order to solve the above problems,
The invention according to claim 1 is an environment tank for setting a predetermined environment such as a temperature or humidity different from the outside air, and a pair of both ends of a test object such as an electric wire supported inside the environment tank. Of the vibration test support jig and a vibration device for vibrating the intermediate portion of the test object supported by the both vibration test support jigs. A fixture for fixing each end of the body, a jig main body for detachably supporting the fixture at a predetermined position, and a projecting dimension from both ends of the jig main body that can be expanded and contracted to make the inner surface of the environmental tank. And an adjuster that is stretched and fixed to the side.

According to a second aspect of the present invention, there is provided the vibration testing apparatus according to the first aspect, wherein the jig main body is attached to the frame portion and the frame portion having the adjusters attached to both ends thereof. A flat plate-like panel to which the fixture can be attached is provided at a desired position within the main surface.

A third aspect of the present invention is the vibration test support jig according to the first aspect.

The invention according to claim 4 is the support jig for vibration test according to claim 2.

In the claims of this specification, the term "electric wire or the like" includes both a single wire and a bundle of electric wires.

[0019]

FIG. 1 is a diagram showing a vibration test apparatus according to an embodiment of the present invention. As shown in FIG. 1, this vibration test apparatus includes a rectangular environment tank 11 for setting a special environment having a temperature and humidity different from the outside air, and the environment tank 1.
A pair of vibration test support jigs 13 that both ends of the wire harness 12 are supported inside the wire harness 12, and a component 14 attached to an intermediate portion of the wire harness 12 supported by the both vibration test support jigs 13. And a vibration device 15 for vibrating.

The environment tank 11 is a hollow box whose central portion 21 on the bottom surface is hollowed out for inserting the vibration device 15, and its side wall and ceiling are airtight. still,
The hollow portion of the central portion 21 of the bottom surface is formed larger than the vibration test support jig 13 and the vibration device 15 so that the vibration test support jig 13 and the vibration device 15 can be inserted.

As shown in FIG. 2, each vibration test support jig 13 has a fixture 22 for holding the wire harness 12 on both sides.
And a frame portion 23 (FIG. 3) with an adjuster 25,
It is composed of a panel 24 (FIG. 4) which is supported by the frame portion 23 and fixes the fixture 22. The frame portion 23 and the panel 24 form a jig body that supports the fixture 22.

The fixture 22 is a metal member such as aluminum, and is assumed to be a situation in which parts attached to each end of the wire harness 12 (for example, connectors and clips) are actually mounted in an automobile or the like. Then, a plurality of types that are as close as possible to the shape of the actual mounting target are prepared in accordance with the parts, and these prepared ones are used selectively. For example, when a clip or a clamp is used as a component at each end of the wire harness 12, the clip or the clamp has a shape imitating a mounting portion of a vehicle or the like when the clip or the clamp or the like is mounted on the vehicle or the like. This makes it possible to perform a vibration test while realizing a situation close to the actual application state.

As shown in FIG. 3, the frame portion 23 is provided with adjusters 25 at the upper and lower ends, and a pair of columns 2 extending vertically.
6 are arranged so as to be parallel to each other in the horizontal direction, and the two pillars 26 are connected by three horizontal rods 27.

As shown in FIG. 5, the adjuster 25 is composed of a rubber pressing portion 31 and a metal screw portion 32 connected to the pressing portion 31, and has screw holes formed on the upper and lower end surfaces of each column 26. Screw to 33 and adjust the screw tightening
The projecting size of the pressing portion 31 from the end surface of 6 can be adjusted. By adjusting the screw of the adjuster 25, the pressing portion 3 of the adjuster 25 is pushed from the upper and lower ends of the support column 26.
Since 1 can be expanded and contracted, as shown in FIG. 1, the column 26 can be fixed by being stretched between the upper and lower surfaces of the environmental tank 11 at an arbitrary position of the environmental tank 11.

As shown in FIG. 3, a bolt insertion hole 35 for horizontally fastening the end surface of the horizontal rod 27 with a bolt 35a (see FIG. 2) is formed in the support column 26 in a horizontal direction. Two bolt insertion holes 35 are formed for each horizontal rod 27, corresponding to the mounting positions of the horizontal rods 27.

Further, at a predetermined position on the front surface of the column 26,
Bolt insertion holes 36 for tightening and fixing the panel 24 with bolts 36a (see FIG. 2) are formed. The bolt insertion holes 36 are formed in, for example, three positions along the longitudinal direction of the support column 26 on the front surface thereof.

Bolt screw holes (not shown) are formed on the end faces of the horizontal rods 27, and bolts (not shown) inserted through the bolt insertion holes 35 of the support column 26 are fastened and fixed.

Further, a bolt insertion hole 37 for fastening and fixing the panel 24 with a bolt 37a (see FIG. 2) is formed at the center of the front surface of each of the horizontal rods 27.

As shown in FIG. 4, the panel 24 has bolt insertion holes 38 for tightening and fixing the bolts 36a and 37a at positions corresponding to the bolt insertion holes 36 and 37 of the columns 26 and the horizontal rods 27, respectively. In addition, as shown in FIG. 6, the fixture 22 is attached to the panel 24 with bolts 39a and nuts 39b.
A plurality of bolt insertion holes 39 for tightening and fixing are fixed vertically (horizontally and horizontally) at regular intervals (for example, 50 mm).
In this way, a plurality of bolt insertion holes 39 are formed in advance, and when the panel 24 is erected by the frame portion 23 as shown in FIG. 2, one of the bolt insertion holes 39 of the panel 24 is selected. The fixing tool 22 can be bolted. Therefore, the fixture 22 can be fixedly supported at any position on the plane of the panel 24.

As the component 14, those actually attached to the wire harness 12, such as clips and connectors, are used.

As the vibrating device 15, the same ones as those in the first and second prior arts are used. As shown in FIG. 1, a main body portion 41 having a driving portion such as a motor and a vibration transmitting portion such as a gear is provided. , The wire harness 12 at the upper end of the body portion 41
And a vibrator 42 that vibrates the component 14 of FIG.
Are vibrated in directions of arbitrary three axes (x-y-z space) orthogonal to each other.

The fixing of the component 14 to the vibrator 42 assumes that the component 14 is actually mounted in an automobile or the like.
Support in a way that is as close to reality as possible. For example, when a clip or a clamp is used as the component 14, it is attached to the vibrator 42 so that the clip, the clamp, or the like imitates a portion to be attached to an automobile or the like.
This makes it possible to perform a vibration test while realizing a situation close to the actual application state.

An operation of performing a vibration test using the vibration test apparatus having the above configuration will be described. The vibration test support jig 13
Is assumed to have been completed in the shape shown in FIG.

First, the fixtures 22 are provided according to the types of parts (not shown) installed at both ends of the wire harness 12.
And use the bolts 39a and nuts 39b to
The vibration test support jig 13 is fixed to a bolt insertion hole 39 formed in the panel 24 (FIG. 6).

Then, parts (not shown) attached to both ends of the wire harness 12 are fixed to the respective fixing members 22.

In this state, the test support jig 13 and the wire harness 12 are inserted into the environment tank 11 from the hollowed open portion of the central portion 21 of the bottom surface. Then, the adjuster 25 of the test support jig 13 is adjusted, the expansion and contraction of the pressing portion 31 of the adjuster 25 from the support column 26 is adjusted,
The support 26 is stretched and fixed between the upper and lower surfaces of the environmental tank 11 by the pressing portion 31.

At this time, as for the position where the pillar 26 is stretched and fixed, all the parts except the open part of the central portion 21 of the bottom surface of the environment tank 11 are the arrangable regions, so that the length of the wire harness 12 and the like are The test support jig 13 can be freely arranged according to the above. Therefore, it is not necessary to individually prepare a dedicated vibration test device individually corresponding to a plurality of types of wire harnesses 12.

Finally, while fixing the component 14 at the central portion of the wire harness 12 to the vibrator 42 at the hollowed-out portion of the central portion 21 on the bottom surface of the environmental tank 11,
The vibrating device 15 is inserted in the environment tank 11 and the vibrator 42 is set in a state where the temperature, humidity and the like in the environment tank 11 are set to a predetermined environment.
Vibration test is carried out by vibrating.

As described above, since the vibration test support jig 13 has the structure in which the adjusters 25 are installed at the upper and lower ends of the column 26, the environmental tank 11 which is difficult in the first prior art is used. The vibration test support jig 13 can be easily arranged and fixed at an arbitrary position of the environment tank 11 according to the length of the wire harness 12 while adjusting the temperature, the humidity, and the like inside, and the versatility is increased. Therefore, the installation cost can be reduced as compared with the second conventional technique in which a dedicated vibration test device is individually used according to the type of the wire harness 12.

Further, a plurality of bolt insertion holes 39 are formed on the main surface of the panel 24, and any one of the bolt insertion holes 39 can be freely selected to attach and fix the fixture 22. It is possible to provide the vibration test support jig 13 and the vibration test apparatus that have a large degree of freedom in the mounting positions of the respective ends of the wire harness 12 on the main surface of the panel 24 and are highly versatile.

In the above embodiment, the vibration test apparatus for the wire harness (electric wire bundle) 12 has been described as an example, but it goes without saying that it may be used for a single wire vibration test, for example.

In the above embodiment, the component 14 attached to the intermediate portion of the wire harness 12 is vibrated by the vibrating device 15. However, for example, the intermediate portion of the wire harness 12 is attached to the vibrator 42 by a string or the like. The vibration test may be performed by directly connecting them.

Further, the adjusters 25 are installed at the upper and lower ends of the columns 26 so as to stretch and support the upper and lower surfaces of the environment tank 11. For example, the adjusters 25 are installed at the left and right ends of each frame portion 23. However, the left and right side surfaces of the environment tank 11 may be supported by being stretched.

[0044]

According to the inventions of claims 1 and 3, since the vibration test support jig has a structure in which adjusters are installed at both ends of the frame part,
While adjusting the temperature and humidity in the environment tank, which was difficult with the first conventional technology, it is easy to set up a vibration test support jig at an arbitrary position in the environment tank according to the length of the DUT such as an electric wire. It can be placed and fixed in place, increasing versatility. Therefore, the installation cost can be reduced as compared with the second conventional technique in which a dedicated vibration test device is individually used according to the type of the device under test.

According to the second and fourth aspects of the invention, there is a large degree of freedom in the mounting position of each end of the electric wire or the like on the main surface of the panel, and a versatile vibration test support jig. And a vibration test apparatus can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing a vibration test apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a vibration test support jig used in the vibration test apparatus according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a frame portion of a vibration test support jig.

FIG. 4 is a front view showing a panel of a vibration test support jig.

FIG. 5 is a perspective view showing an adjuster of a support jig for vibration test.

FIG. 6 is a cross-sectional view showing a fixture of a vibration test support jig.

FIG. 7 is a side view showing a vibration testing device of a first conventional technique.

FIG. 8 is a sectional view showing a vibration testing device of a second conventional technique.

[Explanation of symbols]

11 environment tank 12 wire harness 13 Support jig for vibration test 14 parts 15 Vibration device 22 Fixture 23 frame 24 panels 25 Adjuster 26 props 27 Yokomo 31 Pressing part 39 bolt insertion hole 42 oscillator

Claims (4)

[Claims] 1. An environment tank for setting a predetermined environment such as a temperature or humidity different from the outside air, and a pair of vibration tests for supporting both ends of an object to be tested such as electric wires inside the environment tank. A supporting jig and a vibrating device that vibrates the intermediate portion of the device under test supported by the supporting jigs for both vibration tests, wherein each of the vibration test supporting jigs is provided at each end of the device under test. A fixture for fixing the parts, a jig main body for detachably supporting the fixture in a predetermined position, and a projecting dimension from both ends of the jig main body that can be expanded and contracted so as to be stretched and fixed on the inner surface side of the environment tank. And a vibration test apparatus provided with the adjuster. 2. The vibration test apparatus according to claim 1, wherein the jig body has a frame portion having the adjusters attached to both ends thereof, and a desired position within a main surface attached to the frame portion. A vibration test apparatus comprising: a flat plate panel to which the fixture can be attached. 3. In a rectangular environment tank for setting a special environment having a temperature and humidity different from the outside air, when the intermediate part of the DUT is vibrated by a predetermined vibrating device, A vibration test support jig for supporting both ends of a device under test at both ends thereof, and a fixture for fixing each end of the device under test, and detachably supporting the fixture at a predetermined position. A supporting jig for vibration test, comprising: a jig main body; and an adjuster for projecting from both ends of the jig main body so that the jig main body can be stretched and stretched toward the inner surface of the environment tank to fix the jig main body. 4. The vibration test supporting jig according to claim 3, wherein the jig main body has a frame portion having the adjusters attached to both ends thereof, and a main surface attached to the frame portion. A support jig for a vibration test, comprising a flat plate-like panel to which the fixture can be attached at a desired position.