JPH09101490A - Layout support tool for spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately draw a data line on a lens fitted to a spectacle frame. SOLUTION: An upper holding member 12 and a lower holding member 13 are movable along long holes 111a and 111b. The upper holding member 12 and lower holding member 13 move interlockingly in the mutually opposite directions while maintaining the same distance from the data line 141 on a display plate 14. Consequently, the spectacle frame is clamped by those upper holding member 12 and lower holding member 13 from the both sides and then the data line 141 is positioned at the intermediate position of the vertical width of the lens, so the data line can easily be drawn on the lens surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle layout aid for drawing a datum line on a spectacle lens, and more particularly to a spectacle layout aid for drawing a datum line on a lens attached to a spectacle frame.

[0002]

2. Description of the Related Art When a lens is attached to a spectacle frame selected by a wearer, it is necessary to process the lens into the same shape as the lens frame shape of the spectacle frame. Further, even in the case of a spectacle frame having no lens frame, it is necessary to process the spectacle frame so as to have a desired design shape. In this case, the lens must be processed so that the position of the wearer's pupil when wearing the eyeglasses coincides with the optical center of the lens.

Therefore, a demo lens is usually attached to the lens frame of the spectacle frame, and a horizontal line called a datum line is drawn on the demo lens. The datum line is a line drawn at an intermediate position between the upper end (eyebrow side) and the lower end (cheek side) of the lens. With this datum line drawn, wear a spectacle frame and measure the amount of deviation of the wearer's pupil position from the datum line.Then, the optical center position after lens processing, that is, the centering point for lens processing The position of is required.

Conventionally, in order to draw this datum line, an eyeglass frame equipped with a demo lens is placed on a sheet-shaped dedicated chart, and the upper and lower ends of the demo lens are datum while looking at the scale drawn on the dedicated chart. The eyeglass frame was manually positioned so as to be located at the same distance from the line, and the datum line was drawn on the demo lens along the datum line drawn at the center of the scale at that time.

[0005]

However, since the scale is displayed in a two-dimensional manner on the dedicated chart, it is not possible to place the three-dimensional eyeglass frame on the scale for manual alignment. It was very difficult to draw the datum line accurately. In particular, when the lens frame or the demo lens has a large curved surface, or when the spectacle frame is provided with the lens frame only on the upper side, the stability is poor and the spectacle frame placed on the dedicated chart is shaken. This made the alignment more difficult. For this reason, the work of drawing a datum line using a dedicated chart requires experience and intuition, and the work is complicated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a layout aid for eyeglasses capable of easily and accurately drawing a datum line.

[0007]

In order to solve the above-mentioned problems, the present invention provides a layout aid for eyeglasses for drawing a datum line on a lens attached to an eyeglass frame, for mounting the eyeglass frame. A mounting table having a mounting surface, a display portion provided on the mounting surface, on which a datum line is drawn, and an abutting surface parallel to the datum line, the abutting surfaces centering on the datum line with respect to each other. And a second holding member provided so as to be able to move in a direction perpendicular to the datum line while maintaining a symmetrical positional relationship with each other, a layout assistance for eyeglasses. Supplies are provided.

In such a layout aid for glasses,
The spectacle frame is mounted on the mounting surface of the mounting table so that the front surface of the lens faces downward, and the upper (eyebrow side) end and the lower (cheek side) end of the spectacle frame are respectively placed at the first position. It is sandwiched by the holding member and the second holding member. The first holding member and the second holding member can move in the direction perpendicular to the datum line while the contact surfaces hold a symmetrical positional relationship with respect to the datum line, so that the eyeglass frame is sandwiched between them. Then, the datum line of the display unit is located at an intermediate position above and below the lens frame. If a datum line is drawn along the lens surface along this line, it can be drawn accurately and easily.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the layout auxiliary tool of this embodiment. FIG. 2 is a perspective view showing the appearance of the layout assisting tool. The layout assistant 10 mainly includes a mounting table 11, an upper holding member 12, a lower holding member 13, and a display plate 14. Two long holes 111 a and 111 b are formed in parallel on the mounting plate 111 of the mounting table 11. An upper holding member 12 and a lower holding member 13 are slidably attached to the long holes 111a and 111b, as described later.

Upper holding member 12 and lower holding member 13
Is a member that holds the spectacle frame from both sides, and the contact surfaces 12a and 13a with the spectacle frames are formed so as to face each other in parallel and to be perpendicular to the long holes 111a and 111b. In addition, the lower holding member 13
The pressing member 130 has a contact surface 13a substantially at the center thereof.
It is slidable in the direction perpendicular to.

The display plate 14 is provided slidably in the same direction as the pressing member 130. The display plate 14 is provided with a knob 14a. As shown in FIG. 3, by holding the knob 14a, the entire display plate 14 can be pulled out to the front side.

Returning to FIG. 1 and FIG.
A datum line 141 is printed in a direction perpendicular to the long holes 111a and 111b. This datum line 1
41 is provided so as to be located in the middle of the vertical width of the mounting table 11 shown in FIG. A center line 142 perpendicular to the datum line 141 is printed in the middle of the left and right width of the display plate 14. Further, at positions symmetrical with respect to the center line 142, the interpupillary scales 143 are respectively provided.
a and 143b are printed. Interpupillary scale 143
a and 143b are used to mark the interpupillary distance.

An upper scale portion 144 and a lower scale portion 145 are printed at symmetrical positions with respect to the datum line 141, respectively. The upper scale part 144 and the lower scale part 145 are composed of a plurality of scales drawn at equal intervals. Upper scale portion 144, lower scale portion 14
Each scale of 5 is drawn so as to be located at the same distance from the datum line 141. In addition, the upper scale portion 144 and the lower scale portion 145 have datum line 1
Numerical values (unit: mm) indicating the distance from 41 are displayed on every other scale.

FIG. 4 is a diagram showing the structure of the back surface of the mounting plate 111. Two shafts 121, 122, 131, 1 are provided on the back surfaces of the upper holding member 12 and the lower holding member 13, respectively.
32 are attached. Shaft 12 of upper holding member 12
1, 122 have long holes 111a and 111b whose distances between the axes are long holes 111a and 111b.
They are attached so that the distance between them is almost the same and the line connecting the axes is parallel to the contact surface 12a of the upper holding member 12. Similarly, the shaft 13 of the lower holding member 13
1 and 132 have long holes 111a and 111b in which the distance between the axes is long.
They are attached so that the distance between them is almost the same and the line connecting the axes is parallel to the contact surface 13a of the lower holding member 13.

One shaft 121 of the upper holding member 12 is slidably inserted in the elongated hole 111a, and the other shaft 122 is slidably inserted in the elongated hole 111b. Further, one shaft 131 of the upper holding member 13 is slidably inserted in the long hole 111a, and the other shaft 132 is slidably inserted in the long hole 111b.

The shaft 121 of the upper holding member 12 and the shaft 132 of the lower holding member 13 are respectively provided with the elongated holes 21 of the connecting bar 21.
It is slidably inserted into a and 21b and is loosely fastened by bolts 31 and 34. On the other hand, the upper holding member 1
The second shaft 122 and the shaft 131 of the lower holding member 13 are slidably inserted into the long holes 22a and 22b of the connecting bar 22, and are loosely fastened by bolts 32 and 33.

The connecting bars 21 and 22 are connected to each other by bolts 35 whose central portions penetrate the mounting plate 111, and are rotatably fastened by nuts 36. The bolt 35 penetrates at a position overlapping the intersection of the datum line 141 and the center line 142 shown in FIG.

Bottom folding pieces 112, 11 of the mounting table 11
3 has two screw holes 112a, 112b, 1 respectively.
13a and 113b are formed, and a bottom lid (not shown) is screwed.

According to the structure shown in FIG. 4, when the upper holding member 12 is moved along the elongated holes 111a and 111b in the direction of the datum line 141, for example, the elongated holes 21a and 22 are formed.
a is pushed by the shafts 121 and 122, respectively, and the connecting bar 2
1, 22 rotate around the bolt 35 as an axis. At this time,
The connecting bar 21 rotates clockwise in the figure, and the connecting bar 22 rotates counterclockwise.

On the other hand, when the connecting bars 21 and 22 rotate, the other elongated holes 22b and 21b push the shafts 131 and 132 of the lower holding member 13 upward (in FIG. 4). As a result, the lower holding member 13 moves toward the upper datum line 141. The moving distance of the lower holding member 13 at this time is the same as the moving distance of the lower holding member 12.

As described above, when the upper holding member 12 is moved to the datum line 141 side, the lower holding member 13 is also interlocked and moved to the datum line 141 side by the same distance. On the contrary, when the upper holding member 12 is moved in the direction away from the datum line 141, the lower holding member 13 is moved by the same distance in the direction away from the datum line 141 in conjunction with this. In addition, the lower holding member 13
Even if the upper holding member 1 is moved, the upper holding member 1 is interlocked with this.
2 moves the same distance in opposite directions. In this way, the upper holding member 12 and the lower holding member 13 can always move about the datum line 141 while maintaining a symmetrical positional relationship with each other.

Next, the direction of use of the layout assisting tool 10 of this embodiment having such a configuration will be described. FIG. 5 is a plan view showing a usage state of the layout auxiliary tool 10 of the present embodiment. First, the spectacle frame 40 in which the left and right demo lenses 43 and 44 are attached on the mounting plate 111 of the mounting table 11.
Is placed. From the vertical direction of the spectacle frame 40, the upper holding member 12 and the lower holding member 13 respectively.
Attraction. As a result, the contact surface 12a of the upper holding member 12 is located at the upper (eyebrow) end portion 41 of the lens frames 41, 42.
a, 42a, while the contact surface 13a of the upper holding member 13 has a lower (cheek side) end portion 41 of the lens frames 41, 42.
b, 42b. In this state, the pressing member 130 is slid and brought into contact with the nose pad portion 45 of the eyeglass frame 40, so that the eyeglass frame 40 can be held in a stable state.

Since the contact surface 12a and the contact surface 13a are always equidistant from each other with respect to the datum line 141, in the state where the spectacle frame 40 is held as shown in the figure, the display plate 14 is held.
The datum line 141 passes through the middle between the upper and lower ends of the lens frames 41 and 42. At this time, the lens frames 41, 42
If it is formed to have a uniform thickness, the datum line 141 passes through the middle between the upper and lower ends of the demo lenses 43 and 44. Therefore, the upper ends 43a and 44a (inside the upper part of the lens frame) and the lower ends 43 of the demo lenses 43 and 44 are
b and 44b (inside the lower portion of the lens frame) are on the same numerical line in the upper scale portion 144 and the lower scale portion 145, respectively. The operator who confirms this can draw a datum line on the demo lenses 43 and 44 easily and accurately by drawing a line on the demo lenses 43 and 44 along the datum line 141.

By the way, depending on the spectacle frame, there are those in which the thickness of the lens frame is not uniform, those with decoration on the bridge top, and those with the lens frame only on the eyebrow side. In the case where the spectacle frame 40 has such a shape, the datum line 141 does not pass through the vertical center positions of the demo lenses 43 and 44 when being held by the upper holding member 12 and the lower holding member 13. Therefore, in this case, by pinching the knob 14a, the display plate 1
4 is pulled downward in FIG. 5 to lower the positions of the datum line 141, the upper scale portion 144, and the lower scale portion 145. Then, the upper ends 43a, 4 of the demo lenses 43, 44
4a and the lower ends 43b and 44b are the upper scale portion 14 respectively.
4. Adjust the lower scale part 145 so that they are on the line of the same numerical value. If this adjustment is made, the datum lines can be drawn on the demo lenses 43 and 44 simply and accurately as described above.

[0025]

As described above, according to the present invention, the first holding means is capable of moving in the direction perpendicular to the datum line while the abutting surfaces maintain a symmetrical positional relationship with each other about the datum line of the display section. Since the member and the second holding member are provided, by sandwiching the spectacle frame with the first holding member and the second holding member, the datum line of the display unit is positioned at an intermediate position above and below the lens frame. be able to. Therefore, the datum line can be accurately and easily drawn on the lens surface.

[Brief description of the drawings]

FIG. 1 is a plan view of a layout auxiliary tool of the present embodiment.

FIG. 2 is a perspective view showing an appearance of a layout auxiliary tool.

FIG. 3 is a diagram showing a state in which a display plate is pulled out.

FIG. 4 is a diagram showing a configuration of a back surface portion of a mounting plate.

FIG. 5 is a plan view showing a usage state of the layout auxiliary tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Layout assistance tool 11 Mounting base 12 Upper side holding member 12a Abutting surface 13 Lower side holding member 13a Abutting surface 14 Display plates 21,22 Connection bar 40 Eyeglass frame 41,42 Lens frame 43,44 Demo lens 111 Mounting plate 111a, 111b long hole 141 datum line 143 upper scale part 144 lower scale part

Claims (5)

[Claims] 1. A layout assisting tool for glasses for drawing a datum line on a lens attached to an eyeglass frame, comprising: a mounting table having a mounting surface for mounting the eyeglass frame; and a mounting table provided on the mounting surface. And a display part on which a datum line is drawn, and an abutting surface parallel to the datum line, wherein the abutting surface maintains a symmetrical positional relationship with respect to the datum line with respect to the datum line. A layout assistant for eyeglasses, comprising: a first holding member and a second holding member provided so as to be movable in a vertical direction. 2. The layout aid for eyeglasses according to claim 1, wherein the display unit has a plurality of frame upper scales and a plurality of frame lower scales indicating a distance from the datum line. 3. The spectacles layout aid according to claim 1, wherein the display unit is provided so as to be slidable in a direction perpendicular to the datum line. 4. The spectacles according to claim 1, wherein one of the first holding member and the second holding member is provided with a pressing member that comes into contact with the nose pad of the spectacle frame. Layout aids. 5. The layout aid for eyeglasses according to claim 4, wherein the pressing member is attached so as to be slidable toward the nose pad.