JPH0740217Y2 - Display filter mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a display filter mounting device.

<Prior art> For example, there is a measuring instrument that uses a CRT as an indicator.
The RT is generally covered by a filter.

Such a filter is detachably attached to the CRT screen for maintenance of the CRT and the filter. Most of the mounting devices use a mechanism that holds the filter on the CRT screen with a small bezel and fixes it with a screw.

However, such screw attachment is not always easy to attach and detach.

<Problems to be Solved by the Invention> The present invention has been made in order to solve such problems, and an object thereof is to provide a mounting device capable of easily attaching and detaching a display filter. is there.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention is provided with a filter having step portions formed on both sides along the length direction and an opening portion for mounting a display portion. A bezel having a groove formed on one side surface thereof to which one step portion of the filter is fitted; and the other step formed on the one side surface of the filter along the length direction of the bezel. A step portion that engages with the portion is formed, and the attachment mechanism includes a block that is attracted to the other side of the opening portion of the bezel through a magnetic plate and that is movable when the point of action thereof is pushed. .

<Example> Hereinafter, an example is described in detail.

FIG. 1 is a block diagram of an example of a measuring instrument using a mounting device according to the present invention.

In FIG. 1, 10 is a case and 20 is a bezel 11 of the case 10.
The CRT (display unit) and 30 provided in FIG. A filter 40 is attached to the CRT.

FIG. 2 is a view showing a cross section taken along the line AA ′ of the CRT portion in FIG.

In FIG. 2, reference numeral 11 denotes the bezel of the case 10, the opening of which
CRT20 is attached to 12. Reference numeral 40 is a filter, and step portions 41 and 42 are formed on both sides of the filter. In the bezel 11, a groove 11a into which a step portion 41 formed on one side surface of the filter 40 is fitted is formed on one side of the opening 12, and a recess 11b is formed on the other side.

Reference numeral 50 denotes an attachment mechanism according to claim 1. In the attachment mechanism 50, 51 is a block made of an elongated magnetic material. Filter 51 on the side of block 51
A step portion 51a with which the step portion 42 formed on the other side of 40 is engaged is formed. 52 is an elongated plate composed of a magnetic plate, and its width is almost half the width of the block 51. 53 is a long and thin permanent magnet (magnet plate).
Is attached to the recess 11b formed in the bezel 11 by adhesion or the like. The block 51 is attracted to the bezel side by the permanent magnet 53 via the magnetic plate 52.

In the mounting mechanism 50 configured in this way, the filter
To mount 40, the magnetic plate 52 is attached to the permanent magnet 53 by the permanent magnet 53 so that the magnetic plate 52 is attracted to the permanent magnet 53, and then the step 41 formed on one side of the filter 40 is attached to the bezel 11. Aperture
The groove 51a is formed on one side of the filter 12, and the step portion 42 formed on the other side of the filter 40 is engaged with the step portion 51a formed on the block 51. Adsorb to.

FIGS. 3 (a) to 3 (c) are views for explaining the operation of the mounting device of FIG. It should be noted that FIG. 3 shows the case where the stepped portion 41 formed on one side of the filter 40 and the one side of the opening 12 of the bezel 11 are separately formed into two. However, the present invention is not limited to this, and the number may be one or three or more.

In FIG. 3, the filter 40 installed as described above
To remove, press the side of the block 51 without the magnetic plate 52 with your fingertips. That is, if you press the movable point of action, the block
The block 51 can be removed by rotating around the end of the magnetic plate 52 as a fulcrum (see FIG. 3A). as a result,
The filter 40 can be removed from the front of the CRT 20 (see Fig. 3 (b)). When attaching, block 51 of filter 40 is fitted into groove 11a, and then block 51 is attached to magnetic plate 52.
It is carried out by adsorbing to (see FIG. 3C).

<Other Embodiments> The present invention is not limited to the above description, but may have the following configurations.

Modified Example I: If the structure as shown in FIGS.
It may be difficult to process 51. This also leads to an increase in processing cost. In addition, since the magnetic plate 52 is attracted to the surface of the permanent magnet 53 by a flat surface, when variations occur in the height direction due to individual parts, the filter
It is also conceivable that a gap is created in the step portion 51a formed on the other side of the filter 40, and the filter 40 rattles in the front-back direction of the product.
Therefore, in such a case, the structure can be modified as shown in FIG.

FIG. 4 is a diagram showing another embodiment of FIG.

FIGS. 5 (a) to 5 (b) correspond to FIGS. 3 (a) and 3 (c), and are views for explaining the operation of the attachment device of FIG.

In FIGS. 4 and 5, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

Hereinafter, other examples will be described in detail.

The feature of the configuration shown in FIG. 4 is that, in the structure in which the members are locked by using the attractive force of the permanent magnet 53, a part of one member is used as a fulcrum, and the attractive force on both sides of this fulcrum is intentionally changed. The force is generated and the force in one direction generated by this difference is used to lock the members.

Specifically, it is as follows.

The tip of the bezel of the portion of the filter 40 opposite to the surface on the opposite side of the stepped portion 41 in FIG. 2 is basically flush with the permanent magnet 53 (the magnetic plate 52 may have a slight protrusion). Is lower than the surface).

On the other hand, the bezel tip portion 11c in FIG. 4 is flush with the opposite surface. That is, the bezel 11 in FIG.
A filter 40 is provided on one side of the opening 12 (on the right side in the figure).
A groove 11d into which the step portion 41 formed on one side is fitted is formed, and a recess 11e in which the permanent magnet 53 is embedded and installed is formed on the other side. The recess 11e may be simply machined by that size. Then, in this case, the step portions 41, 42 formed on the side surface of the filter 40 are fitted into the groove 11d, so that the back surface of the filter comes into contact with the groove 11d, and the other side similarly has one end of the concave portion 11e. The part 11c and the back surface of the filter are brought into contact with each other. 60 is a concrete mounting mechanism.
In the mounting mechanism 60, 61 is an elongated plate-shaped block (hereinafter referred to as the second
It is called a "cover" to distinguish it from the blocks in the figure. The end portion 61a in the length direction of the cover 61 is formed to be engaged with the step portion 42 of the filter 40 so as to be inclined, and a magnetic plate 52 is adhered to the back surface in the length direction. At this time, the combination of the cover 61 and the magnetic plate 52 corresponds to the combination of the block 51 and the magnetic plate 52 in FIG. The cover 61 provided with the magnetic plate 52 has a “ridge” of the magnetic plate 52 on the surface of the permanent magnet 53.
With the fulcrum as the fulcrum, the "ridge" on the other side of the magnetic plate 52 is a permanent magnet.
Filter end surface 51a due to the rotational force attracted to the surface of 53
It is adsorbed by pressing.

The description will be continued below with reference to FIG.

In the mounting mechanism 50 configured in this way, the filter
To mount 40, a step 41 formed on one side of the filter 40 is provided with a groove 11d formed on one side of the opening 12 of the bezel 11.
And the inclined portion formed on the cover 61 in which the magnetic plate 52 is fixed to the end surface of the step portion 42 formed on the other side of the filter 40 by adhesion or the like is abutted, and the permanent magnet 53 is attached to the magnetic plate 52 of the magnetic plate 52. Use the "ridge" as a fulcrum to adsorb.

In order to remove the filter 40 attached in this way, the other end of the cover 61 on the side without the magnetic plate 52, which is abutted against the filter 40, is pushed with a fingertip (the movable action point is pushed). As a result, the cover 61 rotates about the “ridge” of the magnetic plate 52 as a fulcrum. As a result, this cover can be removed as shown in FIG. As a result, the filter 40 can be removed from the front surface of the CRT 20. Install the filter 41 by step 41
After fitting into the groove 11d, the cover 61 and the magnetic plate 52 provided therein are attracted to the permanent magnet 53. As a result, the result is as shown in FIG.

Needless to say, the groove 11d provided on the bezel 11 and the step portion 41 formed on the filter 40 may be formed separately in two, as shown in FIG.

By doing so, it is possible to reduce the cost of the parts related to the mounting portion of the CRT filter and also improve the suction performance.

Modified Example II: The display filter mounting device described above is also used in a small measuring instrument having a small installation area as shown in FIG.

FIG. 6 is a block diagram of an example of another measuring instrument for explaining another example (modified example II) of the present invention.

In FIG. 6, 70 is a case, and 80 is a bezel 71 of the case 70.
It is a CRT (display unit) provided in. The structure of this measuring device is vertically long when viewed from the front in order to reduce the installation area. A filter 90 such as an acrylic transmission filter is attached to the window 72 on the CRT tube surface on the front of the CRT. A convex portion 73 is provided in order to reduce the appearance instability due to the vertically long front surface, and the shape of the filter 90 is molded to match the convex portion 73. At this time, conventionally, the filter 90 was adhered to the side surface 72A of the opening (window) 72 with an adhesive or the like.
The CRT cannot be cleaned, and the yield is deteriorated due to the increased number of processes for painting and printing the filter to hide the adhered surface and the difficulty of processing the filter itself as shown in the figure. There was a problem such as a factor of cost increase.

On the other hand, with the structure shown in FIGS. 2 and 4, the filter itself and the CRT can be easily cleaned.
In this case, the parts other than the filter such as the bezel shape and the blocks shown in FIGS. 2 and 4 are made to look like a convex shape in appearance according to the convex portion 73 (for example, in FIG.
This can be solved by adding a slight inclination to the shape of 51, and installing a tilt block that can be fitted to the filter on the other side).

<Effects of the Invention> As described above, the following effects can be obtained by configuring the invention.

According to the configuration of FIG. 2, one side of the filter is fitted in the groove formed in the bezel, the other side of the filter is made of a magnetic material, and the block that moves when the point of action thereof is moved to the bezel side. CRT the filter by adsorbing
Since it is attached to the filter, it is possible to obtain an attachment device that is easily attached and detached as compared with the case of attaching to a filter with a screw as in the related art.

In addition, according to the configuration of FIG. 4, since the cover is a flat plate, processing is easy, which leads to cost reduction accordingly,
By pressing the filter by the turning force with the "ridge" of the magnetic plate as the fulcrum, the filter can be pressed without rattling regardless of the variation due to the parts. Also,
Since the suction surface is a “ridge”, the cover can be rotated with a small force to remove the filter.

[Brief description of drawings]

FIG. 1 is a block diagram of an example of a measuring instrument in which the mounting device of the present invention is used, FIG. 2 is a sectional view taken along the line AA ′ of FIG. 1, and FIGS. The figure for demonstrating operation | movement of the attachment apparatus of a figure, FIG. 4 is a figure which shows the other Example of FIG. 2, FIG. 5 (a)-(b) is operation | movement of the attachment apparatus of FIG. FIG. 6 is a block diagram of an example of a measuring instrument for explaining another embodiment of the present invention. 11 ... bezel, 40 ... filter, 50 ... block, 52 ... magnetic plate.

Claims (1)

[Scope of utility model registration request] 1. A filter having step portions formed on both sides along the lengthwise direction, and an opening portion for mounting a display portion is formed, and one step portion of the filter is fitted to one side surface thereof. And a bezel having a groove formed therein and a magnetic material, and one side surface of the bezel is provided with a step portion that engages with the other step portion formed on the filter along the length direction, and a magnetic plate An attachment device for a display filter, comprising an attachment mechanism including a block that is attracted to the other side of the opening portion of the bezel and that is movable when its action point is pushed.