JP2591820Y2 - Door opening and closing hinge mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge mechanism for opening and closing a door of an electronic device, for example, and more particularly to a door having a bearing at each of the opening and closing portions of a main body and a door, and having a pin inserted as a rotating shaft into the bearing. The present invention relates to an open / close hinge mechanism.

[0002]

2. Description of the Related Art A conventional door opening / closing hinge mechanism is as shown in FIGS. In each of the drawings, reference numeral 1 denotes a main body of an electronic device, for example, 2 denotes a bearing formed on the main body 1, and 3 denotes a door which is attached to the main body 1 so as to be openable and closable and has a bearing 4. 5 is a bearing portion 2 of the main body 1 and a door 3
And a pin as a rotating shaft inserted across the bearing portion 4 of FIG. The inner bearing portion 2 has an inner diameter of the bearing hole 6 slightly smaller than the outer diameter of the pin 5, and the outer bearing portion 4 has an inner diameter of the bearing hole 7 smaller than the outer diameter of the pin 5. It is slightly larger. The pin 5 is inserted into the bearing hole 7 from the side of the bearing portion 4 having a large inner diameter, and is pressed into the bearing hole 6 of the bearing portion 2 having a small inner diameter with a hammer or the like so as not to fall out of the bearing hole 6. I have to. In such a configuration, the door 3 opens and closes with the pin 5 inserted into the bearing portion 4 as a fulcrum, as shown in FIG.

[0003]

However, the prior art has the following problems. (1) The workability is poor because the pins 5 are press-fitted into the bearing holes 6. (2) When hitting the pin 5 with a hammer or the like,
May hurt. (3) A sufficient space is required on the insertion side of the pin 5 for hitting with a hammer or the like to press-fit the pin. Therefore, in the case of a small product, it is necessary to arrange the bearings 2 and 4 at both ends of the product as much as possible or to make the bearing 4 protrude from the surface of the product. There is a problem that the shape of the product is greatly restricted, for example, the shape must not be protruded from the surface.

[0004]

In order to solve the above-mentioned problems, the present invention provides a bearing formed on a main body and an opening and closing portion of a door, and a rod-shaped pin inserted into a bearing hole of the bearing. > A door opening / closing hinge mechanism having at least one of a main body and a door, a bearing portion integrally formed of a thermoplastic resin, and an end portion of the bearing portion at an extension of the bearing hole and a half circumference of the pin.
A pin guide groove formed in a half-moon shape for receiving the surface, and the pin
For bridge-shaped caulking with a narrow axial width across the guide groove
It has a pin stopper formed by caulking
It is a thing.

[0005]

According to the above-mentioned means, a pin stopper for preventing the rod-shaped pin from coming out of the bearing hole can be easily formed only by crushing the caulking projection in the manner of thermal caulking, thereby simplifying the work of mounting the pin. Also, there is no restriction on the shape of the product.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are a plan view and a side sectional view showing a door opening / closing hinge mechanism of the present invention, in which a door is opened. The overall structure of the door opening / closing hinge mechanism is almost the same as that of the prior art, except that the main body 1 and the bearing 2 and the door 3 and the bearing 4 are separated.
Each is integrally molded with a thermoplastic resin . The bearing part 4
The end on the side not facing the bearing 2 is provided on the bearing 4.
Receiving the semi-peripheral surface of the rod-shaped pin 5 on the extension of the bearing hole 7
A lug-shaped pin guide groove 8 is formed. At this time, the inner diameter of the bearing hole 6 and the bearing hole 7 of the bearing portion 2 is slightly larger than the outer diameter of the pin 5, and the bearing hole 6 on the main body 1 side is a blind hole with a bottom . The pin guide groove 8 has a bottom of the bearing hole 6.
At a position slightly longer than the length of pin 5
A narrow width in the axial direction across the pin guide groove 8 through which 5 passes
A bridge-shaped caulking projection 9 is formed. Insertion and fixation of the pin 5 into the bearing holes 6 and 7 are performed as follows. First, as shown in FIG.
The pin 5 is inserted into the pin guide groove 8. Next, the pin 5 is slid in the pin guide groove 8 so that
As shown in FIG. 2 (a) , the pin 5 is inserted into the bearing holes 6 and 7, and the pin 5 is brought into contact with the bottom of the bearing hole 6.
Te Thereafter, as shown in FIG. 3 (a) (c), or by heating the caulking protrusions 9 in the pin guide grooves 8, by caulked crush or sonicated, pin guide grooves 5
And a pin stopper 10 for retaining the pin 5
To form With such a configuration, the pin 5 is
And is inserted into bearing holes 7 and 6.
And simply crimp the caulking projection 9 to easily
The axial movement of the pin 5 can be stopped. When the bearing hole 6 is not a blind hole , the pin guide groove
8, the bearing portion of the bearing hole 6
Protrusion for caulking is provided on the end face not facing 4 and swaged
In this way, the end of the bearing hole 6 may be filled to form a pin stopper. Further, both the main body 1 and the door 3 need not be formed of a thermoplastic resin, but may be formed of a thermoplastic resin only for forming the pin guide groove 8. Further, the pin stopper 10 inserts the pin 5 into the bearing holes 6 and 7 instead of the caulking projection 9 of the pin guide groove 8, and then inserts a metal or resin member into the pin guide groove 8 of the door 3. It may be formed by bonding or welding, or after inserting the pin 5 into the bearing holes 6 and 7, the pin 5 may be fixed by bonding or welding to the pin guide groove 8 of the door 3. .

[0007]

[Effects of the Invention] As described above, the present invention has the following effects. (1) There is no need to press-fit the pin 5 and the work of inserting the pin 5 is facilitated. (2) Since no tool such as a hammer is required when inserting the pin 5, the main body 1 and the door 3 are not damaged when the pin 5 is inserted. (3) No large space is required on the insertion side of the pin 5,
There is no restriction on the shape of the product.

[Brief description of the drawings]

FIG. 1A shows a door opening / closing hinge mechanism of the present invention.
Plan view showing a state where a pin is inserted into a pin guide groove,
(B) is a sectional view taken along line AA in (a), (c)
FIG. 4A is a cross-sectional view along the line BB in FIG. 4A, and FIG. 4D is a cross-sectional view along the line CC in FIG.

FIG. 2A shows the door opening / closing hinge mechanism of the present invention;
FIG. 2B is a plan view showing a state in which the pin is inserted into the bearing hole, FIG. 2B is a cross-sectional view taken along the line AA in FIG.
5A is a cross-sectional view taken along the line BB, and FIG. 5D is a cross-sectional view taken along the line CC in FIG.

FIG. 3A shows a door opening / closing hinge mechanism of the present invention;
FIG. 2B is a plan view showing a state in which a pin stopper is formed in the pin guide groove, FIG. 2B is a cross-sectional view taken along line AA in FIG.
(C) is a sectional view taken along line BB in (a), (d)
FIG. 3 is a cross-sectional view taken along line CC in FIG.

FIG. 4A is a rear view of an electronic device showing a conventional example,
(B) is a side view.

5A is a rear view showing details of a door opening / closing hinge mechanism in FIG. 4, and shows a state before a pin is inserted into a bearing hole, and FIG. 5B shows a state where the pin is inserted into the bearing hole; Is shown.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body 2 Bearing part of main body 3 Door 4 Bearing part of door 5 Pin 6 Bearing hole of main body 7 Bearing hole of door 8 Pin guide groove 9 Convex part for caulking 10 Pin stopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A door opening / closing hinge mechanism having a bearing formed on an opening / closing portion of a main body and a door, and a rod-shaped pin inserted into a bearing hole of the bearing, wherein at least one of the main body and the door has a thermoplastic resin. And a pin guide groove formed in a half-moon shape to receive a semi-peripheral surface of the pin on an end of the bearing portion at an end of the bearing portion, and a pin stopper formed in the pin guide groove. have a, the pin
The stopper has a narrow axial width across the pin guide groove
It is formed by caulking a bridge-shaped caulking projection.
Door closing hinge mechanism, characterized in that the those.