JPH0731219Y2 - Hinges for glasses - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge for spectacles, in which a pivotal portion can be continuously maintained as a stable structure that does not easily loosen.

[0002]

2. Description of the Related Art A conventional hinged part of an eyeglass temple comprises a hinge formed by connecting a pair of hinges so as to be openable and closable by using a tightening screw which also serves as a pivot. It was

In the hinge having such a structure, a rotating action is applied to the pivot every time the temple is opened and closed, so that the screw loosens during use of the eyeglass to destabilize the pivotal joint, and sometimes the screw falls off to cause the eyeglass temple. However, there was a problem that it came off from the lens frame. When the screw is loosened, the screw will be returned to the initial state once it is retightened at the time of loosening, but the screw may be worn again due to the abrasion of the screw. The present invention is intended to provide a hinge for eyeglasses that can solve such problems.

[0004]

A hinge 1 for glasses (hereinafter referred to as a hinge) 1 according to the present invention connects a first hinge body 2 and a second hinge body 3 via a pivot 5 so as to be openable and closable. It becomes.

The pivot shaft 5 has a cylindrical portion 7 having a diameter smaller than that of the circular enlarged portion 6, and a side surface of a shaft portion 9 protruding in the axial direction at the tip of the cylindrical portion. , The locking hole 11 is provided in a direction substantially orthogonal to the axis of the cylindrical portion, and the hole wall of the locking hole 11 on the tip side of the shaft part is provided with a shaft portion base end side from the entrance end of the locking hole toward the exit end. It becomes the inclined surface 12 which inclines to.

The first hinge body 2 is formed so as to have a circular through hole 17 through which the cylindrical portion 7 can be closely inserted, and the peripheral edge portion a at the outer end of the circular through hole is the inner surface portion b of the enlarged portion. It comes to abut.

On the other hand, the second hinge 3 is formed so as to have a through hole 26 through which the shaft portion 5 can be inserted, and the peripheral edge portion c of the inner end of the through hole 26 is the peripheral edge portion of the inner end of the circular through hole 17. It is characterized in that it does not come into contact with d, and that a side surface portion thereof is provided with a screw hole 32 into which a tightening screw 31 which can engage with the inclined surface 12 is screwed.

In the hinge 1, the inner surface b of the enlarged portion 6 of the pivot 5 has a conical projection surface 13, and the peripheral edge portion a of the outer end of the circular through hole 17 of the first hinge body 2 has the conical shape. The conical concave surface 20 that can contact the projecting surface 13 and the circular through hole 1
The peripheral edge portion d of the inner end of 7 is formed as a conical concave surface 21,
Further, the peripheral edge portion c of the inner end of the through hole 26 of the second hinge body 3 is preferably formed as a conical projection surface 29 capable of contacting the conical concave surface 21.

[0009]

In the case where the hinge according to the present invention is used to form the pivotal attachment portion of the spectacle temple, the first hinge body 2 is used.
Either one of the second hinge 3 and the second hinge 3 is fixed to the eyeglass temple, and the other is fixed to the attachment portion of the eyeglass temple, and the tightening screw 31 is tightened in this state, so that the engaging portion 30 causes the inclined surface 1 to move.
As it is screwed while engaging with 2 (screw in the direction of arrow F shown in FIG. 1 (B)), the inclined surface 12 is pressed toward the tip of the shaft portion.

Therefore, the peripheral edge portion a of the outer end of the circular through hole 17 is
And the inner surface portion b of the enlarged portion 6 is in a pressure contact state and the through hole 26
Of the inner edge of the circular through hole 17 and of the inner edge of the circular through hole 17
Is pressed.

Since the pivot 5 and the second hinge 3 are integrated by the tightening screw 31, the first hinge 2 can be rotated around the axis of the pivot 5 with a certain stiffness. That is, the temple 15 can be opened and closed with a certain rigidity.

Further, in the hinge according to the present invention, since the pressure contact state is formed by tightening the tightening screw 31 whose front side portion engages with the inclined surface 12, the inclined surface 12 is slightly moved toward the tip of the shaft portion. The rotation angle of the tightening screw required for displacement can be set to a large value. Therefore, the pivotally attached portion 35 is extremely difficult to loosen.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a hinge 1 according to the present invention comprises a first hinge body 2 and a second hinge body 3 which are openably and closably connected via a pivot shaft 5.

As shown in FIGS. 1 (B) to 3, the pivot 5 has a cylindrical portion 7 having a diameter smaller than that of the enlarged portion 6 projecting from the center of the enlarged portion 6, and the tip of the cylindrical portion 7 has, for example, a semi-circular portion in the axial direction. A split columnar shaft portion 9 is provided in a projecting manner, and a flat surface 10 of the shaft portion 9 is provided with a locking hole 11 in a direction substantially orthogonal to the axis of the columnar portion. The hole wall on the tip side of the shaft portion of the locking hole 11 is an inclined surface 12 that is inclined toward the base end side of the pivot from the inlet end toward the outlet end, and the shape of the inlet end is a long hole that is long in the axial direction of the cylindrical portion. The outlet end is formed as a circular hole. The inner surface of the enlarged portion 6 is formed as a conical projection surface 13.

As shown in FIGS. 1 (B) to 2 and FIG. 4, the first hinge body 2 has a pedestal portion 16 (see FIG. 6 for the brazing state) which is brazed to the tip of the inner surface of the spectacle temple 15. In the lower half, a bearing portion 19 having a circular through hole 17 through which the column portion 7 can be closely inserted is provided so as to project inward. The peripheral edge portion of the outer end of the circular through hole 17 is formed as a conical concave surface 20 that contacts the conical protruding surface 13 of the enlarged portion, and the peripheral edge portion of the inner end of the circular through hole 17 is formed as a conical concave surface 21. Formed.

On the other hand, the second hinge body 3 is, as shown in FIGS. 1 (B) to 2 and FIG. 5, a pedestal portion 23 to be brazed to the inner surface of the end piece 22 near the rear end (see FIG. 6 for brazing state). 2), a bearing portion 27 having a through hole (a part of the inner peripheral surface of which is a flat surface 25) 26 through which the shaft portion 9 of the pivot shaft can be inserted is projected inward. The peripheral edge portion of the inner end of the through hole 26 is a conical projecting surface 29 that abuts the conical concave surface 21 of the inner end of the circular through hole, and the side portion thereof has the front side portion of the locking hole. A screw hole 32 for screwing a tightening screw 31, which is a conical engaging portion 30 that can come into contact with the inclined surface 12, is provided.

Therefore, the first hinge body 2 and the second hinge body 3
When the and are integrated by using the pivot 5, as shown in FIG. 1 (B), the bearing portion 19 of the first hinge body 2 and the bearing portion 27 of the second hinge body 3 are connected to each other by the conical projection surface. 29 for conical concave surface 21
The second concealed portion of the second hinge body is inserted from the bearing portion side of the second hinge body so that the conical projecting surface 13 of the enlarged portion 6 contacts the conical concave surface 20. Moreover, the tightening screw 31 is screwed into the screw hole 32 so that the engaging portion 30 presses the inclined surface 12. As a result, the conical protruding surface 13 of the enlarged portion 6, the conical concave surface 20 of the bearing portion 19, the conical concave surface 21 of the bearing portion of the first hinge body, and the conical protruding surface 29 of the second hinge body are pressed together. It becomes a state. The degree of this pressure contact can be set to a desired value by changing the screwing amount of the tightening screw, and since the pivot shaft 5 and the bearing portion 27 of the second hinge body 3 are integrated, the first hinge body is formed. 2 can be rotated around the axis of the pivot 5 with a constant stiffness.

Eyeglass temple 15 shown by the alternate long and short dash line in FIG.
Shows the folded state, and the screw head 33 of the tightening screw 31 is exposed in this state (see FIG. 1A for the exposed state). When it is necessary to adjust the tightened state of the tightening screw 31, the tip of the driver is applied to the engaging groove of the screw head 33.

[0019]

[Effect of the Invention] When the hinge according to the present invention is used to form a pivotal attachment portion of a spectacle temple, one of the first hinge body and the second hinge body is fixed to the spectacle temple and By fixing one side to the mounting part of the spectacle temple and adjusting the tightening state of the tightening screw to the required one, it is of course possible to easily form the pivotal part that raises and lowers the spectacle temple with appropriate rigidity. Therefore, it is possible to form a stable structure pivotal portion that is unlikely to come loose.

The reason why the pivoting portion is difficult to loosen is that the opening and closing stiffness is adjusted by using a tightening screw which is independent of the pivot and does not directly receive the rotating action of the hinge. It is important that the front side portion is configured to form a pressure contact state of the pivotally attached portion by tightening a tightening screw that engages with the inclined surface of the locking hole. As a result of adopting this configuration, the rotation angle of the tightening screw can be set large in order to slightly displace the inclined surface in the axial direction of the shaft portion. In other words, in order for a slight amount of loosening to occur, it is necessary for the tightening screw to return by a large angle, and the pivotal attachment is very difficult to loosen. Therefore, there is a problem in the conventional hinge in which the rigidity of opening and closing is adjusted by using a tightening screw that also serves as a pivot, that is, the screw of the hinge is loosened and the pivot part is destabilized, or the screw falls off the hinge and the eyeglass temple is attached. The problems in the related art such as the lens frame coming off the lens frame are solved.

As described above, since the rotation angle of the tightening screw can be set large in order to displace the inclined surface in the distal direction of the shaft portion by a slight amount, the torque for tightening the tightening screw can be small, and therefore The tightening condition can be finely adjusted.

In particular, the conical concave surface of the first hinge body is formed so as to abut the conical convex surface of the second hinge body, and the conical convex surface of the enlarged portion corresponds to the conical concave surface of the first hinge body. If the contact is made, the assembly of the hinge can be facilitated. In addition to this, since the axis of the pivot is naturally regulated so as to match the center of the circular hole, the rotating part is less likely to wear and the stability when the hinge is opened and closed is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating an embodiment of the present invention.

FIG. 2 is a partially cutaway exploded perspective view illustrating an embodiment of the present invention.

FIG. 3 is a perspective view illustrating a pivot.

FIG. 4 is a perspective view illustrating a first hinge body.

FIG. 5 is a perspective view illustrating a second hinge body.

FIG. 6 is a perspective view illustrating a usage state of the hinge according to the present invention.

FIG. 7 is an explanatory view illustrating a usage state of the hinge according to the present invention.

[Explanation of symbols]

 1 Hinges 2 1st Hinges 3 2nd Hinges 5 Axis 6 Enlarged Part 7 Columns 9 Shafts 11 Locking Holes 12 Slopes 17 Circular Through Holes 26 Through Holes 31 Tightening Screws 32 Screw Holes

Claims (2)

[Scope of utility model registration request] 1. A first hinge body (2) and a second hinge body (3) are openably and closably connected to each other via a pivot shaft (5), and the pivot shaft (5) has a diameter smaller than that of a circular enlarged portion (6). A columnar portion 7 is provided in a protruding manner, and a locking hole 11 is provided in a side surface portion of a shaft portion 9 which is provided at a tip of the columnar portion so as to project in an axial direction thereof in a direction substantially orthogonal to an axis line of the columnar portion. The hole wall on the tip side of the shaft portion of the stop hole 11 is formed as an inclined surface 12 that is inclined toward the base end side of the shaft portion from the inlet end to the outlet end of the locking hole, and the first hinge body 2 is the columnar portion. 7 has no circular through hole 17 through which the hole 7 can be closely inserted, and the peripheral edge portion a at the outer end of the circular through hole does not come into contact with the inner surface portion b of the enlarged portion, while the second hinge 3 is A through hole 26 through which the shaft portion 5 can be inserted is formed, and a peripheral edge portion c of the inner end of the through hole 26 is formed.
Is formed so as to contact the peripheral edge portion d of the inner end of the circular through hole 17, and the side surface portion thereof is provided with a screw hole 32 into which a tightening screw 31 whose front side portion can engage with the inclined surface 12 is screwed. A hinge for spectacles that is characterized by 2. The inward surface portion b of the enlarged portion 6 of the pivot 5 is a conical projection surface 13, and the circular through hole 1 of the first hinge body 2.
The peripheral edge portion a of the outer end of 7 is formed as a conical concave surface 20 that can abut the conical protruding surface 13, and the circular through hole 1
A peripheral edge portion d of the inner end of 7 is formed as a conical concave surface 21, and a peripheral edge portion c of the inner end of the through hole 26 of the second hinge 3 is a conical protrusion that can abut the conical concave surface 21. 2. A hinge for spectacles according to claim 1, which is formed as a surface 29.