JPH0244261Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an eyeglass frame in which the opening angle of the temples can be adjusted so that the eyeglass frame fits the wearer when the eyeglass frame is worn.

[Conventional technology]

In this type of conventional eyeglass frame, the lens frame and the temple are connected by a hinge. This hinge is composed of a hinge metal fitting on the ball frame side and a hinge metal fitting on the temple side, and the fixing part, which is one end of these hinge metal fittings, is fixed to the ball frame and the temple, respectively, and the mounting part, which is the other end of each hinge metal fitting, is fixed to the ball frame and the temple. The connecting holes are rotatably connected by screws or the like, and the fixing part and the mounting part of these hinge fittings are integrally formed.

[Problem that the invention attempts to solve]

However, since the opening angle of the temples in the above eyeglass frame is constant, the number of people who can fit this eyeglass frame is limited, and in order to allow other people to fit it, it is necessary to use eyeglass frames with different distances between the temples. Many types of products must be manufactured, and manufacturing costs will be high if many products are produced in small quantities. Further, even if many types of eyeglass frames are manufactured, since they cannot be adjusted steplessly to fit the wearer, there may be cases where the wearer cannot achieve a fine fit.

[Means for solving problems]

In view of the above-mentioned circumstances, this invention allows for stepless adjustment of the distance between the ear hooks of each temple. A fixed part fixed to the ball frame having a guide hole in the direction and a female thread formed in a direction perpendicular to the ball frame, a fitting part that can be inserted into and removed from the guide hole of the fixed part, and a connection with the temple side hinge fitting. It consists of a mounting part having a hole and a small screw screwed into the female thread, and an elastic body housed in the guide hole and biasing the mounting part in a direction opposite to the ball frame.

(Function) According to the above means, when the female screw of the fixed part and the machine screw of the mounting part are screwed together so that the threading depth is maximum, and the mounting part is coupled and fixed to the fixed part of the ball frame side hinge metal fitting, When the temples are opened and the end surfaces of the temples are brought into contact with the lens frames, as with conventional eyeglass frames, the temples become approximately parallel to a plane perpendicular to a straight line passing through the centers of the two lenses. In addition, if the machine screw and female screw are screwed together so that the screwing depth is the minimum, and the mounting part is connected and fixed to the fixed part of the hinge fitting fixed to the ball frame side, the urging force of the elastic body will cause The mounting part is pushed out to the temple side. Then, when the temple is opened and the end surface of the temple is brought into contact with the lens frame, it will expand outward from the lens frame by the angle formed by the plane perpendicular to the straight line connecting the centers of the two lenses, and the ends of the temple will touch each other's lens frame. The distance between the ear hooks is wider than that of conventional eyeglass frames. In this way, by adjusting the threading depth between the female thread and machine screw between the maximum and minimum, the mounting part will be pushed toward the temple by the biasing force of the elastic body, and the end surface of the temple will come into contact with the ball frame. When the vines are opened, the distance between the ear hooks of the vines can be infinitely widened.

〔Example〕

An embodiment of this invention will be described below based on the drawings.

As shown in FIG. 1, a spectacle frame 1 according to an embodiment of this invention has a lens frame 3 made of hard plastic that supports two lenses 2; They are connected via a hinge 5, and when the temples 4 are opened outward from the ball frame 3, the end surfaces 6 of the temples 4 come into contact with the ball frame 3, and the ear hooks 7 of each temple 4 contact each other. The interval is determined. As shown in FIG. 2, the hinge 5 is composed of two hinge fittings, namely a ball frame side hinge fitting 8 and a temple side hinge fitting 9. The fixed parts 8a and 9a on one end side are the ball frame 3 and the temple 4, respectively.
The mounting portions 8b and 9 on the other end are embedded and fixed in the
b are rotatably connected to each other by screws 10 or the like. The temple hinge 9 has a fixed portion 9a and a mounting portion 9b integrally formed, and the fixed portion 9a is embedded and fixed in the temple 4. As shown in FIG. 3, the ball frame side hinge fitting 8 has the fixing part 8a and the mounting part 8b formed separately. This fixed part 8a has a circular convex part 12 having a collar 11 on one side.
a guide hole 13 formed in the circular convex portion 12 on the other side, a guide groove 14 having a U-shaped cross section connected to the guide hole 13, and the guide groove 1.
4 is formed with a female thread 15 provided parallel to the guide hole 13, and the guide hole 13 and the guide groove 14 are opened on the side opposite to the circular convex portion 12. This fixing part 8a is embedded in the lens frame 3 from the circular convex part 12 side so that the center line of the guide hole 13 is perpendicular to the lens frame 3, and is held by the collar 11 of the circular convex part 12. It is designed so that it does not fall out of the ball frame 3. On the other hand, the mounting portion 8
b is formed such that the fitting part 16 fitted into the guide hole 13 of the fixing part 8a and the protruding part 17 fitted into the guide groove 14 of the fixing part 8a are at right angles, and this fitting part 16 A connecting hole 18 is provided on the side where the projecting portion 17 intersects with the connecting hole 18, and the connecting hole 18 is connected to the fixing portion 9b of the temple hinge fitting 9 using the screw 10 or the like. Furthermore, an insertion hole 20 for the compression coil spring 19 is provided on the distal end surface of the fitting portion 16, and the compression coil spring 1 is inserted into the insertion hole 20.
9 is inserted into the fixing portion 8a, the mounting portion 8b is always urged in the direction of being pushed out from the mounting portion 8a. or,
A through hole 21 is formed in the protruding portion 17 and communicates with the female thread 15 of the securing portion 8a when the mounting portion 8b is fitted into the securing portion 8a. A machine screw 22 is inserted and the female thread 15 is screwed together to connect the attachment part 8b to the fixed part 8a. At this time, the guide hole 13 and the guide groove 14 of the fixed part 8a serve as guides for the fitting part 16 and the protruding part 17 of the mounting part 8b, and the screwing depth of the machine screw 22 into the female thread 15 is adjusted and the compression is performed. With the biasing force of the coil spring 19, the temple 4 can be moved toward and away from the ball frame 3, and the temple 4 can be opened and closed while maintaining a constant height with respect to the ball frame 3.

According to the above eyeglass frame 1, when the screwing depth of the machine screw 22 and the female screw 15 is maximized, as shown in FIG. If the female thread 15 of the fixed part 8a and the small screw 22 inserted into the through hole 21 of the attachment part 8b are screwed together in a state where the fixed part 8b is deeply inserted into the fixed part 8a,
When the temple 4 is opened toward the outside of the ball frame 3,
The lens frame 3 and the end surface 6 of the temple 4 are in contact with each other so that the plane perpendicular to the straight line passing through the centers of the two lenses 2 and the side surface of the temple 4 are almost parallel, and the distance between the ear hooks 7 of the temples 4 is adjusted. is the same distance as the distance between the side edges of the lens frame 3. At this time, the urging force of the compression coil spring 19 is sealed by the screwing force of the machine screw 22 and the female screw 15. In addition, the screwing depth between the machine screw 22 and the female screw 15 is made shallow, and the mounting portion 8b is pushed toward the temple 4 side by the biasing force of the compression coil spring 19, so that the screwing depth is increased as shown in FIG. The mounting portion 8b which is the smallest
When the fitting part 16 and the protruding part 17 of the fixing part 8a are at the position just before they are removed from the guide hole 13 and the guide groove 14, respectively, the distance between the end of the ball frame 3 and the temple 4 becomes longer, and When the temples 4 are opened outward of the ball frame 3 until the end surfaces 6 of the temples 4 come into contact with each other, the distance between the ear hooks 7 of the temples 4 is the same as that of the ball frame 3.
When the length of the temple 4 is L, the distance can be increased by approximately 2Lsinθ from the distance between the side ends of the temples 4. In this way, the mounting portion 8b of the ball frame side hinge fitting 8
By adjusting the degree to which it fits into the fixed part 8a,
The distance between the ear hooks 7 of the temples 4 can be adjusted by a distance of 2L sin θ without permission, and the eyeglass frame 1 can be comfortably fitted to the wearer.

In addition, even if the lens frame 3 and temple 4 of the above eyeglass frame 1 are made of metal, the shape of the fixed side of the fixed parts 8a and 9a of the lens frame side hinge fitting 8 and the temple side hinge fitting 9, respectively. It can be applied by changing it.

In addition, in order to push out the mounting portion 8b of the ball frame side hinge fitting 8 toward the temple 4 side, the compression coil spring 1 is used in the embodiment.
9 is used, however, a device in which the attachment portion 8b is pushed out toward the temple 4 by using another elastic body is also included within the technical scope of this invention.

[Effect of idea]

As is clear from the above explanation, the mounting part of the hinge fitting on the ball frame side is moved to the temple side by adjusting the threading of the small screw on the mounting part side and the female screw on the fixed part side steplessly by using the biasing force of the elastic body. By extruding, when the temples are opened toward the outside of the ball frame, the distance between the ear hooks of the temples can be adjusted steplessly. For this reason, there is no need to manufacture many types of eyeglass frames, and only a small number of items can be produced, which not only reduces manufacturing costs but also allows fine fitting to suit the wearer.

[Brief explanation of the drawing]

1 to 5 show examples of this invention,
Fig. 1 is an overall perspective view, Fig. 2 is a perspective view of the hinge, Fig. 3 is a perspective view of the hinge fitting on the lens frame side, and Fig. 4 shows the mounting part of the hinge fitting on the lens frame side fitted into the fixed part to the maximum. FIG. 5 is a plan view in which the mounting portion of the ball frame side hinge fitting is pushed out to the maximum extent from the fixed portion. 1... Glasses frame, 2... Lens, 3... Ball frame, 4
... Vine, 5 ... Hinge, 8 ... Ball frame side hinge fitting,
9... Vine side hinge fitting, 8a... Fixed part, 8b...
...Mounting part, 13...Guide hole, 15...Female thread,
16... Fitting portion, 18... Connection hole, 19... Compression coil spring (elastic body), 22... Machine screw.

Claims (1)

[Scope of claim for utility model registration] Ball frame side hinge fittings fixed to both ends of the ball frame,
In an eyeglass frame comprising a hinge configured by rotatably connecting a temple side hinge fitting fixed to a temple, the lens frame side hinge fitting has a guide hole therein in a direction perpendicular to the lens frame. It also has a fixed part fixed to the ball frame with a female thread formed in a direction perpendicular to the ball frame, a fitting part that can be inserted into and removed from the guide hole of the fixed part, and a connecting hole for the temple side hinge fitting, and also has a connecting hole with the female thread. An eyeglass frame comprising: a mounting part equipped with a machine screw to be screwed together; and an elastic body housed in the guide hole and biasing the mounting part in a direction opposite to the lens frame.