JPS5830046B2 - EXIYOFU OIL - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for tensioning and holding a liquid crystal foil without wrinkles.

As is well known, liquid crystal foils can be made to form color patterns over a certain temperature range.

This is true, for example, in U.S. Pat.
No. 101,696, as is known, abnormalities of the human body, such as tumors or skin diseases, cause a slight temperature increase in the zone of the human body in which this abnormality is located, by using a liquid crystal foil according to the invention. When the clamp is fixed on the frame member and pressed against such a diseased area, a color pattern appears on the foil.

Doctors visually evaluate this color pattern and use it for diagnosis.

For example, liquid crystal foil that is used to diagnose tumors in women's breasts, especially breast cancer, with a temperature recorder must be stretched without wrinkles.

Additionally, the tension must be loose enough to prevent over-wrapping of the foil.

The most common method of stretching and fixing ultra-thin liquid crystal foil is to sandwich and affix such foil between smooth frames.

Such a method is time consuming and, moreover, if the foil's gripping force is poor, the resulting defects are no longer repairable.

Therefore, an object of the present invention is to provide a frame that can automatically stretch a liquid crystal foil without wrinkles, and at the same time, can fix such a liquid crystal foil in a stretched state without damaging it. be.

In accordance with the present invention, there is provided a device for holding a liquid crystal foil taut in a wrinkle-free manner, the device including an insertable inner frame having an outer centering edge, and an insertable inner frame for inserting the inner frame. a substantially rectangular outer frame having an inner centering edge, wherein the inner border of the outer frame has the shape of a tension collar, and the surface of the collar facing the outer centering edge is an inclined surface. The lower edge of the tensioning collar is rounded and its surface is smooth, while the surface of the tensioning collar facing away from the outer centering edge is also an inclined surface. , sloped at a steeper angle than the angle of the surface facing the outer centering edge, the corners of the inner borders of the outer frame and the inner frame are rounded, and the inner frame has a tension collar cooperating with the tension collar. The surface of the inner frame including the groove and towards the inner centering edge of the outer frame is sloped parallel to the sloped surface of the tension collar.

The advantage of the device according to the invention lies in particular in that the liquid crystal foil is sandwiched in a slackly opened frame, in which case the frame can be pressed together.

In that case, the liquid crystal foil is carefully stretched by being passed over the rounded side of the tension collar.

The surface of the tension collar is smooth (this is achieved by the grinding finish of the injection molding tool).

) so that the liquid crystal foil slides over the surface of the tension collar without being damaged during stretching.

Both the angles of the inner boundaries of the outer frame and the inner frame are rounded so that wrinkles cannot form in the liquid crystal foil even in these areas.

After the liquid crystal foil is stretched, its tension is maintained by the frame.

In a preferred embodiment of the device according to the invention, a clip is arranged on the outer frame, which can engage in a corresponding opening formed in the inner frame.

As a result, the inner frame and the outer frame are combined, and the liquid crystal foil can be fixed in its stretched state.

It is impossible to open the outer and inner frames without using special tools.

This completely avoids unnecessary removal of the liquid crystal foil.

In another embodiment of the device according to the invention, a double-sided adhesive tape is applied to the inside of the outer frame.

As a result, unnecessary removal of the liquid crystal foil from the tension frame can be more reliably prevented.

An embodiment of the device according to the invention is shown in the drawing and is explained in more detail below.

The frame according to FIG. 1 consists of two engaging members, namely an inner frame 1 and an outer frame 2. The frame according to FIG.

The inner frame 1 fits snugly into the outer frame 2.

When these two frames are pressed together, the clips 3 projecting from the outer frame 2 fit into corresponding openings 3a in the inner frame 1, so that the two frames are firmly fixed to each other.

The screen area 12 is delimited or surrounded by the inner rim of the inner frame 1.

The corners 9 of the inner rims of the outer frame and of the inner frame are arcuate with a radius of 20 to 25 mm.

As can be seen in FIG. 6, the outer frame 2 has a particularly shaped bead or collar portion 4 on its inner edge.

This tensile collar 4 is divided into three surfaces, a surface 8 having a steep slope seen perpendicular to the screen surface 12 adjoins a curved surface 7 or a rounded lower part 7, which layer 7 (screen surface 12 ) changes again to the rising surface 6.

The layer 6 has a gentle slope compared to the surface 8.

The peripheral bead or tension collar 4 is important for tensioning the foil.

The angle between surface 8 and a surface perpendicular to screen surface 12 is approximately 5 degrees.

The rising surface 6 comprises a surface at an angle of approximately 45°.

The radius of the curved surface 7 is approximately 1.2#I+! It is. The chamfered surface 6 faces the inner centering edge 5, and the other surface 8 faces away from the iron wire 5 and faces the screen surface.

The inner centering edge or rim 5 is formed by a portion of the outer frame 2 that is bent 90° from the screen surface.

, the contour of the inner frame 1 is adapted to the contour of the outer frame 2.

These cohesive relationships are shown in FIG.

The outer centering edge 13 of the inner frame 1 is adjacent to the inner centering edge 51 of the outer frame 2, and the outer circumferential tension groove 11 cooperates with the tension collar 4 of the outer frame 2 when the two frames are assembled ( Figure 7)
.

The inner rim of the inner frame 1 is rounded as shown at 14.

With reference to FIG. 2, the ribs 15 on the lower frame merely serve for reinforcement.

The opening 15a is provided for mounting the combined frame on the holder and inspecting the liquid crystal foil stretched thereon.

Both frames are manufactured, for example, by injection molding polystyrene.

The liquid crystal coated foil is assembled into two frame members as follows.

The foil is first loosely attached to the inner frame 1 and the foil is cut into rectangular shapes as follows.

That is, the foil is placed so that it projects over the inner rim 14 of the inner frame 1 and ends in the plane 16 (FIG. 3) between the opening 3a for the clip 3 and the outer centering edge 13.

The outer frame 2 is then attached to the inner frame 1 and both frames are compressed so that the clips 3 snap into the openings 3a of the inner frame 1.

When both frames are pressed together, the clip 3 protrudes through the foil.

During this assembly process, the foil slightly skims over the inner rounded rim 14 of the inner frame 1 and over the outer surface of the tension collar 4.

When this foil is press-fitted into the 9-tension groove 11 of the inner frame during this assembly process, the foil is appropriately tensioned against the screen surface.

Surprisingly, it has been found that by employing such a method, folds and distortions are completely avoided.

This is when using liquid crystal foil for medical diagnosis.
This is a necessary requirement to obtain high image quality.

On the other hand, the tensile effect must also not be too strong.

That is, the foil may be torn. Furthermore, the contours 6, 7, 8 of the tension collar 4 shown in FIG. 1 must be smooth in order not to damage the foil.

This can be easily achieved by polishing the molding surface within the injection mold.

The unique framework of the present invention has solved the delicate problem of forming a perfectly smooth foil in the plane of the screen.

As a further improvement for fixing the foil, the lower region of the clip 3 can be provided with a double-sided adhesive tape 17 (FIG. 7) on the adjacent surface, for example on the surface 16 in FIG. 3, for example on the surface 16 in FIG.

This ensures that the edges of the foil are firmly adhered to either the frame 1 or 2, for example.

Normally, the clip 3 reliably connects the inner and outer frames, but if a higher degree of connection is desired, both frames can be welded.

[Brief explanation of the drawing]

FIG. 1 shows a view from below with the two inner and outer frames assembled together; FIG. 2 shows the lower inner frame in more detail, also seen from below; Figure 3 shows line C- in Figure 2.
4 is a cross-sectional view passing through the inner frame taken along line D; FIG. 4 shows the inner frame at the top as seen from the bottom; FIG. The figure shows a cross section taken along the line CD in FIG. 6, and FIG. 7 shows a cross section when the two frames are combined. 1...Outer frame, 2...Inner frame, 3...
...Clamp, 3a...Clamp opening, 4.
・・・Tensile collar 5・・・Centering edge.

Claims (1)

[Scope of Claims] 1. A device for holding a liquid crystal foil taut without wrinkles, the device comprising: an insertable inner frame having an outer centering edge; and a mechanism for inserting the inner frame. comprising a substantially rectangular outer frame having an inner centering edge, wherein the inner border of the outer frame has the shape of a tension collar, and the surface of the collar facing the outer centering edge is an inclined surface; The lower edge of the tension collar is rounded and its surface is smooth, and the surface facing away from the inner centering edge on the surface of the tension force is also an inclined surface. , sloped at a steeper angle than the angle of the surface facing the outer centering edge, and the inner frame includes a tension groove that cooperates with the tension collar, and the inner frame includes a tension groove on the inner centering edge of the outer frame. The facing surface of the inner frame is sloped parallel to the inclined plane of the tension collar, and each corner of the inner border of the outer frame and inner frame is rounded so that the inner centering edge of the outer frame and the inner frame are rounded. Apparatus characterized in that the inner frame is inserted into the outer frame by the cooperative action of the outer centering edges of the and the cooperation of the tension collar and the tension groove. 2. The device according to claim 1, in which the clip placed on the outer frame engages with an opening formed in the inner frame. 3. The device according to claim 1, wherein a double-sided adhesive tape is provided inside the outer frame.