JPS5820756Y2 - Structure of plastic hinge - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a plastic hinge.

In the structure of conventional plastic hinges, the left and right pieces were formed so that they could be opened and closed at a single joint, so when the left and right pieces were closed, the joint would open and close. It inevitably protruded outward.

For this reason, the conventional hinge structure is unsuitable for products where the protrusion of the connecting portion poses an obstacle to safety, such as sun visor arm protectors and infant bags, and also has the disadvantage that the external shape of the product is impaired. was there.

Therefore, in view of the above-mentioned conventional drawbacks, the object of the present invention is to develop a plastic hinge whose outer surface can form a series of curved surfaces when the left and right pieces are closed. It's about providing structure.

In order to achieve the above-mentioned purpose, this invention
and the right piece 4 are each formed to have an arcuate cross section, and the outer edge portions of the left and right pieces 3 and 4 are bent to both edges of the intermediate piece 2 through thin connecting portions 5°5. Support parts 6, 6 are provided on the inner side of each edge of the left piece 3 and the right piece 4, respectively, and can press the intermediate piece 2 outward when both the pieces 3, 4 are closed. It has a protruding plastic hinge structure.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The hinge 1 made of polypropylene has thin connecting parts 5, 5 on the outer edges of the left and right pieces 3 and 4, each having an arcuate cross section, on both ends of the intermediate piece 2, respectively. They are connected to each other so that they can be bent.

Further, on the inner side of each edge of the left piece part 3 button and the right piece part 4, there are protruding support parts 6, 6 that can press the intermediate piece 2 outward when both the pieces 3 and 4 are closed. ing.

Thus, the thickness of each of the intermediate piece 2 and the supporting parts 6, 6 is approximately 1/2 of the thickness of each piece 3.4.

For convenience of explanation, the inside of the left and right connecting parts 5, 5 will be referred to as point A, the inner end of the intermediate piece 2 will be referred to as point B, and the opposing ends of the left and right support parts 6, 6 will be referred to as point C, respectively. .

When the hinge 1 described above is closed, the left piece 3 and the right piece 4 are bent using the point A of the thin connecting portions 5, 5 as a fulcrum.

Then, when the support parts 6, 6 come into contact with point B of the intermediate piece 2, (
(See FIG. 2), as the pieces 3 and 4 are bent about point B as a fulcrum, the intermediate piece 2 is pushed outward by the support parts 6 and 6.

Thereafter, the C point of the support portion 6 comes into contact with the intermediate piece 2, thereby completing the closing (see FIG. 3).

Then, the outer surface of the intermediate piece 2 is continuous with the outer surfaces of the left piece 3 and the right piece 4 by a series of curved surfaces.

In FIG. 3, 7 and 1 indicate the gap formed when closing.

Next, an example in which the above-mentioned hinge 1 is used as an arm protector of a sun visor will be described with reference to FIGS. 4 and 5.

Note that the arm protector 11 includes a mounting arm 13 of the sun visor 12 and a fixing member 1 to which a horizontal aggregate 14 is fixed.
The aggregate 14 is buried together with the filler 16 in which the aggregate 14 is buried.

The filler 16 is covered with a skin material 17.

The arm protector 11 is made of polypropylene and is divided into a first half 18 and a second half 19.
．． 19 are openably and closably connected by buttons at both left and right ends and hinges 1 to 1 of the above embodiment arranged at the center.

That is, in the first half 18, the left half 3 and the second half 19
The right piece 4 is formed to be continuous.

A pair of latching means 20 to 20 are formed on the inner edge of each half-rest 18 and 19 on the open side.

In addition, in the figure, 21 is a clamping hole of the mounting arm 13, 22, 2
2 is a hole for holding the aggregate 14, and 23 is a screw hole.

According to the arm protector 11 described above, the fixing member 15
When covered, the first half 18 and the second half 1
When the 9 is closed, the hinges 1 to 1 are continuous with the outer surfaces of the two halves 18 and 19 in an almost continuous curved surface, as shown in the opening of FIG. can prevent danger to people.

That is, this invention is a hinge 1 made of a plastic material so as to be openable and closable, in which the left piece 3 and the right piece 4 are each formed into an arc shape in cross section, and the left piece 3 and the right piece 4 are shaped like an arc. 4 are connected to both ends of the intermediate piece 20 in a bendable manner via thin connecting parts 5, 5, and the left piece 3
The right piece 4 has a plastic hinge structure with supporting parts 6, 6 protruding from the inner side of each edge that can press the intermediate piece 2 outward when the two pieces 3, 4 are closed. The outer surface of the bent hinge is continuous with a series of curved surfaces.

Therefore, it is possible to improve the safety, aesthetics, etc. of any article that requires a hinge.

In particular, the present invention has support parts 6, 6 on the inner side of each edge of the left piece 3 and right piece 4, respectively, which can press the intermediate piece 2 outward when both the pieces 3, 4 are closed. Since it is a protruding structure, it has the unique effect of making the outer surface of the hinge 1 as smooth and curved as possible by forcing the intermediate piece 2 to be pressed outward by the support parts 6, 6 when the hinge 1 is closed. .

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention.
The figure is a cross-sectional view of the hinge, Figure 2 is a cross-sectional view showing the hinge in the middle of closing, Figure 3 is a cross-sectional view showing the hinge in the fully closed state, and Figures 4 and 5 show examples of how the hinge is used. Figure 4 is a partially cutaway front view of the square/visor, Figure 5 A is an enlarged front view of the arm protector, and the opening is X-
A cross-sectional view from the X side, and C is a cross-sectional view showing a closed state of the mouth. 1...Hinge, 2...Intermediate piece, 3...
...Left side, 4...Right side, 5...
・Connection part.

Claims (1)

[Scope of utility model registration request] The hinge 1 is made of a plastic material so as to be openable and closable, and has a left piece 3 and a right piece 4 each having an arcuate cross section, and the outer edge of each of the left piece 3 and the right piece 4 is set in the middle. Both ends of the piece 2 are connected to each other in a bendable manner via thin connecting parts 5, 5, respectively, and the left and right pieces 3 and 4 are connected to each other so as to be bendable. A structure of a plastic hinge characterized in that supporting parts 6, 6 are respectively provided in a protruding manner to press the intermediate piece 2 outward when the intermediate piece 2 is closed.