JPH0447629Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an impact value recording device that detects impact, vibration, etc. received by an object and records the impact value.

[Conventional technology]

Electronic devices using semiconductors such as ICs, or
Precision instruments are relatively vulnerable to vibrations and shocks, and are therefore prone to breakdowns due to vibrations and shocks during transportation.

Therefore, in order to protect products such as the electronic equipment or precision equipment mentioned above from vibrations and shocks during transportation and transport, cushioning materials made of foam materials etc. are used as packaging materials, thereby improving the quality and performance of the products. We are trying to prevent a decline in

However, even if sufficient protection is provided during transportation and transportation as described above, in reality, some products may already be damaged and the quality and performance of the products cannot be guaranteed. That is the reality.

Therefore, we installed a vibration meter that uses an acceleration sensor during transportation and transportation, and attached the above acceleration sensor to the product or product packaging. By re-inspecting the product, the quality and performance of the product can be reliably guaranteed.

However, the vibration meter using an acceleration sensor as described above amplifies the signal from the acceleration sensor with a charge amplifier, and then calculates and converts the voltage into acceleration, so the structure of the vibration meter as a whole is complex. As it becomes larger scale,
It is also expensive. For this reason, it is not possible to attach the vibration meter itself to each product, and it is practically impossible to transport and transport the vibration meter and the product at all times.

By the way, for example, in Japanese Patent Publication No. 35-15495,
An automatic recording frequency meter for measuring vibration conditions occurring in overhead power transmission and distribution lines is disclosed. In other words,
A vibrating piece and a recording member that records the vibration locus of the vibrator at the tip of the vibrating piece are installed in a metal case that is attached to the power transmission and distribution line with an overhead wire mounting bracket, and after a predetermined period of time, the recording member records the vibration. By examining the vibration trajectories caused by transmission and distribution lines, it is now possible to understand the vibration conditions occurring in power transmission and distribution lines. And in the above,
The vibrator is coated with a radioisotope, and photographic film is used as the recording material, which is housed in a light-shielding and waterproof metal case.

Therefore, as described above, a vibration meter is constructed with a built-in vibrating piece and a recording member, and this is attached to the product being transported or the package of the product, and the recording member records the occurrence of vibrations and shocks during the transportation period. It is possible to configure it so that it can be understood from the vibration locus above. Such a vibration meter has a simple structure and can be manufactured at a lower cost.

[The problem that the idea attempts to solve]

However, if we assume a device that can be attached to each transported product or product package to determine the vibrations and shocks received by each product, if we adopt the configuration described in the above publication as is, it will not be possible to use a device that is sealed in a metal case. Therefore, since it is necessary to take out each photographic film as a recording member, it is especially difficult to attach it to each product or product package.
Since the above-mentioned removal work is large in quantity, a problem arises in that handling becomes extremely complicated.

This invention was made in view of the above, and
The purpose is to achieve a simpler structure in order to enable attachment to each product during transportation, etc., thereby making it possible to reduce the size and cost, and furthermore, to It is an object of the present invention to provide an impact value recording device that allows easy confirmation of the degree of impact received inside the device and is thus easy to handle.

[Means to solve the problem]

In order to achieve the above object, the impact value recording device of the present invention is provided with a leaf spring to which a weight body having a recording device is attached at the tip, and a substantially box-shaped main body case surrounding the leaf spring. The base end of the leaf spring is fixed to one side wall surface of the main body case to support the leaf spring in a cantilevered state, and a scale is provided on the inner wall surface of the main body case parallel to the thickness direction of the leaf spring. The recording paper is pasted, and the recording device protrudes in the width direction from the side edge of the leaf spring toward the recording paper side, and the tip thereof is pressed with a predetermined pressure necessary for recording the deflection locus of the weight onto the recording paper. It is attached so as to come into contact with the recording paper under pressure, and the surface of the main body case that faces the surface to which the recording paper is attached is formed of a transparent plate.

[Effect]

In the impact value recording device with the above configuration, when an impact is applied to the main body case, the weight body attached to the tip of the leaf spring tries to maintain a stationary state by inertia force, and as a result, the leaf spring oscillates in the thickness direction of the plate. This causes relative vibration of the weight body with respect to the main body case. As a result of this vibration, the recording tool attached to the weight rubs against the recording paper, thereby recording a vibration locus of the weight corresponding to the degree of impact on the recording paper. Furthermore, since the leaf spring is surrounded by the main body case, external forces other than vibrations and shocks are prevented from acting on the weight body. It is expressed as something that more accurately corresponds to the degree of vibration or impact.
As a result, for example, the main body case can be attached to an object to be monitored for the degree of impact during transportation/transportation, and
After transportation is completed, the movement trajectory on the recording paper can be viewed through the transparent plate without removing the main body case from the monitored object or removing the recording paper from inside the main body case.・The degree of impact given to the monitored object during transportation is confirmed.

In this way, the above-mentioned impact value recording device has a simple structure in which a cantilevered plate spring with a weight at the tip is installed inside the main body case, and the recording paper is also placed inside the main body case. Since it is attached to the inner wall surface, the main body case can be constructed in the smallest possible shape with an internal space that allows the swinging motion of the leaf spring. Moreover, the recording implement is attached in a shape that protrudes in the width direction of the leaf spring so as to generate a predetermined pressing force necessary for recording, so-called writing pressure, between the recording implement and the recording paper. In this case, the leaf spring receives the reaction force of the writing pressure in its width direction, but since the leaf spring has high rigidity in the width direction, even if the leaf spring oscillates in the thickness direction, The above writing pressure is maintained. In this way, since the writing pressure necessary for recording is always maintained by the leaf spring, the deflection trajectory of the weight body can be maintained without the need for a separate part to maintain the writing pressure. can be recorded reliably. Therefore, this also results in a simple configuration. As a result, it is possible to make it more compact and to manufacture it at a lower cost, and as mentioned above, it is easier to confirm the degree of impact given to the object to be monitored. This makes handling easier.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the impact value recording device 1 according to the present invention, the first
As shown in the figure, the box-shaped main body case 1a is
Its surface is formed of a transparent plate 2 made of plastic or the like, while its back surface is formed with an adhesive part (adhesive part) 3 so that it can be pasted to a predetermined product or a cardboard box in which this product is packaged. It is completed.
Further, at a predetermined location on the outer wall of the main body case 1a, an arrow
is written.

A support member 4 is fixed to the inside of one side wall of the main body case 1a, and a leaf spring 5 is supported in a cantilevered manner on the support member 4 so as to be swingable in the thickness direction thereof. A weight body 6 is fixed to the tip of the leaf spring 5, and a sharp-pointed needle 7, which is a recording device, is attached to the weight body 6 from the side edge of the leaf spring 5 toward the pressure-sensitive recording paper 8, which will be described later. Once installed in a protruding manner.

On the other hand, an arc-shaped pressure-sensitive recording paper 8 is pasted on the bottom surface of the main body case 1a in an area corresponding to the deflection locus of the weight body 6. The needle 7 is provided so that its tip is in contact with the pressure-sensitive recording paper 8, and is also provided in a somewhat biased state so as to press the pressure-sensitive recording paper 8. This pressing force, ie, writing pressure, causes the pressure-sensitive recording paper 8 to develop color. Further, a scale is written on the pressure-sensitive recording paper 8, and this scale is engraved in both the upper and lower directions up to a value of 40G from the reference value 0 point. Further, the zero point of the reference value on this scale is set to correspond to the tip position of the needle 7 when the weight body 6 is stationary.

The impact value recording device 1 having the above configuration can be used, for example, as shown in FIG. It can be attached to any location such as an external wall surface. That is, product 9
If it is before the product 9 is packed in a box, it can be attached directly to the product 9 or on the inner wall of the cardboard box 10, and if it is after the product 9 is packed in a box, it can be attached to the outer wall of the cardboard box 10. Bye. Such pasting work may be performed by the manufacturer of the product 9, or may be performed by the packaging department or logistics department of the cargo handling staff.

The impact value recording device 1 can be easily and quickly attached using the adhesive portion 3 formed on the back surface of the main body case 1a. Further, when performing such pasting, the pasting is done so that the direction of arrow X marked on the outer wall of the main body case 1a matches the direction of gravity applied to the product 9. Furthermore, it is desirable to confirm that the position of the tip of the needle 7 matches the reference value 0 point of the scale immediately before this pasting operation.

When the product 9 is at rest, the weight body 6 is also at rest, as shown in FIG. 3a,
The tip of the needle 7 points to the reference value 0 point on the scale. Then, when the product 9 is transported/conveyed, the weight body 6 swings in response to the occasional vibrations and shocks, as shown in FIG. When the weight 6 swings, the tip of the needle 7 attached to it rubs against the pressure-sensitive recording paper 8, causing that area to develop color, and the vibration locus of the weight 6 is sequentially recorded on the pressure-sensitive recording paper 8. It will be recorded.
Then, as shown in Figure c, by checking both ends a and a of the colored part A through the transparent plate 2 after the transportation and transport, the maximum impact value finally applied to the product can be determined. .

Here, if the maximum permissible impact value for a certain product is, for example, 5G, and the maximum impact value recorded by the impact value recording device 1 is, for example, 2G, it is well within the permissible range, so the product's Quality and performance can be guaranteed. On the other hand, if the maximum impact value recorded by the impact value recording device 1 is, for example, 7G, and the product appears to be malfunctioning, there is a possibility that the failure was caused by vibration or impact. Since this is extremely high, if you understand this and perform an inspection, you can easily and quickly determine the cause of the failure.

In this way, the shock value recording device 1 of the present invention detects vibrations and shocks applied to the product during transportation, transportation, dropping, and other causes, records the maximum shock value, and uses this record as necessary. Sometimes accurate readings can be made using the above scale. In particular, it is an extremely effective means of determining the maximum impact value that a product has received.

In addition, the impact value recording device 1 of the present invention has a simple structure and does not use an electric circuit, so that the overall shape can be reduced, the weight can be reduced, and the price can be reduced. It can be easily attached to the product or to the cardboard box in which the product is packaged.

Although the needle 7 is illustrated as the above-mentioned recording device,
Of course, a writing implement such as a pen may be used instead, and in this case, the pressure-sensitive recording paper 8 may not be used, and plain paper or the like may be used.

[Effect of idea]

As described above, the impact value recording device of the present invention is provided with a leaf spring to which a weight body having a recording device is attached at the tip, and a substantially box-shaped main body case surrounding the leaf spring. The proximal end of the leaf spring is fixed to one side wall of the main body case to support the leaf spring in a cantilevered manner, and a scale is provided on the inner wall surface of the leaf spring parallel to the thickness direction of the main body case. The paper is attached, and the recording device protrudes in the width direction from the side edge of the leaf spring toward the recording paper side, and the tip thereof is pressed with a predetermined pressing force necessary to record the deflection locus of the weight onto the recording paper. It is attached so as to come into contact with the recording paper, and the surface of the main body case that faces the surface on which the recording paper is attached is formed of a transparent plate.

As a result, by attaching the main body case to the monitored object to be transported using adhesive material, the degree of impact received by the monitored object during transportation can be easily confirmed from the deflection trajectory on the recording paper inside the main body case. be able to. The impact value recording device having the above structure is simple in that an elastic body with a weight at the tip is provided inside the main body case, and a recording paper is pasted on the inner wall surface of the main body case. The main body case can be constructed in a shape as small as possible and has an internal space that allows the swinging motion of the elastic body and the weight body. Moreover, since the recording device uses a leaf spring to constantly maintain a predetermined pressing force necessary for recording, so-called writing pressure, there is no need to provide any special parts to maintain such writing pressure. In both cases, it is possible to reliably record the deflection locus of the weight. Therefore, this also results in a simple configuration. As a result, it is possible to make the device more compact and to manufacture it at a lower cost. In addition, after transportation is complete, there is no need to remove the main body case from the monitored object or take out the recording paper from inside the main body case.
By directly reading the deflection locus on the recording paper through the transparent plate, it is possible to easily check the degree of impact given to the object to be monitored during transportation, which facilitates handling.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a perspective view showing an impact value recording device, and FIG. 2 is a perspective view showing an example of how the impact value recording device is attached. Figures 3a to 3c are explanatory diagrams showing the operating states of the impact value recording device, respectively. 1 is an impact value recording device, 1a is a main body case, 2 is a transparent plate, 3 is an adhesive part (paste material), 4 is a support member,
5 is a leaf spring, 6 is a weight body, 7 is a needle (recording tool), and 8 is a pressure-sensitive recording paper (recording paper).

Claims (1)

[Scope of utility model registration request] A leaf spring is provided with a weight body having a recording device attached to its tip, and a substantially box-shaped main body case surrounding this leaf spring, and the proximal end of the leaf spring is fixed to one side wall of the main body case. This leaf spring is supported in a cantilevered state, and a recording paper with a scale is pasted on the inner wall surface of the main body case parallel to the thickness direction of the leaf spring, and the recording device is oriented toward the recording paper side. The plate spring protrudes from the side edge of the leaf spring in the width direction, and is attached so that the tip comes into contact with the recording paper with a predetermined pressing force necessary to record the deflection locus of the weight on the recording paper, and the above-mentioned in the main body case An impact value recording device characterized in that the surface opposite to the pasted surface of recording paper is formed of a transparent plate.