JP3315383B2 - Hinge - 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 for rotatably connecting a door such as a toilet lid to a body such as a toilet seat.

[0002]

2. Description of the Related Art Generally, a hinge of this type is formed of a cylindrical hinge body, a rotating body rotatably inserted into the hinge body, and screwed to one end of the hinge body. A screw member for preventing the hinge body from slipping out of the main body; one of the hinge main body and the rotating body is connected to the frame, and the other is connected to the door. Thus, the door is rotatably supported by the frame via the hinge.

When the screw member is loosened, play occurs between the hinge body and the rotating body, and in the worst case, the rotating body falls off the hinge body. Therefore, in order to prevent the screw member from being loosened, in the conventional hinge, screw portions of the hinge body and the screw member that are screwed to each other are bonded and fixed.

[0004]

However, the conventional hinge has a problem that it is difficult to reliably prevent the screw member from being loosened. That is, for example, when a hinge is provided between the toilet bowl and the toilet lid, an impact is generated by hitting the toilet seat when the toilet lid is closed and rotated. The impact is transmitted to the hinge body and the rotating body via the toilet seat or the toilet lid, and causes them to vibrate. When the hinge body and the rotating body vibrate, the adhesive surfaces of the two gradually peel off. For this reason, the screw member gradually becomes loose.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a hinge body having a fitting hole, a rotating body having a shaft rotatably inserted in the fitting hole,
A screw member that is screwed and fixed to one end of the hinge body and that prevents the rotating body from falling out of the fitting hole;
In the hinge in which the hinge body and the screw member are formed of resin, the hinge body and the screw member may be formed of resin .
Adjacent corners formed with diagonally extending recesses
The hinge body and the upper
It is characterized in that the corners of the screw member are welded to each other. A hinge body having a fitting hole;
A rotating body having a shaft rotatably inserted into the fitting hole,
The rotating body is fixedly screwed to one end of the hinge body,
A screw member that prevents the fitting hole from coming off,
The hinge body and the screw member are formed of resin.
In the hinge, the hinge body and the screw member
A hole from one of them to the other
The hinge book is melted to form
The inner peripheral surface and the outer peripheral surface of the body and the screw member are welded to each other.
It is characterized by that. In this case, the outer peripheral surface of the hinge main body is disposed outside the outer peripheral surface of the screw member, and a partition portion is formed on the outer peripheral surface of the hinge main body to partly separate the hinge main body from another outer peripheral portion. It is desirable that the above-mentioned hole is opened within a range divided by the portion. It is desirable that the hinge body and the screw member are welded at least in a screw portion that is screwed together.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a hinge 1 according to the present invention. The hinge 1 includes a hinge body 2. The hinge main body 2 is made of a resin such as polyester, and is formed in a cylindrical shape with both ends opened. A large-diameter hole 21 and a screw hole 22 are formed at one end of the inner peripheral surface of the hinge body 2, and a support hole 23 is formed at the other end.

The screw member 3 is screwed into the screw hole 22 of the hinge body 2. This screw member 3 is formed of resin. Various resins can be used as the resin forming the screw member 3, but it is preferable to use the same resin as the resin forming the hinge body 2 for the reason described later. The screw member 3 has a male screw part 31 screwed into the screw hole part 22 and a flange part 32 formed integrally with the base end of the male screw part 31. The outer diameter of the flange portion 32 is formed to be equal to or slightly smaller than the inner diameter of the large-diameter hole portion 21 of the damper body 2. And the screw member 3
The screw member 3 is fixed to the damper body 2 by screwing the male screw portion 31 into the screw hole portion 22 and tightening the screw portion, and pressing the flange portion 32 against the bottom surface of the large-diameter hole portion 21. The thickness of the flange 32 is substantially the same as the depth of the large-diameter hole 21. Therefore, when the screw member 3 is fixed to the hinge main body 2, the outer end face of the screw member 3 is flush with one end face of the hinge main body 2 (the right end face in FIG. 1A).

An intermediate member 4 is non-rotatably fitted to an intermediate portion of the hinge body 2. The intermediate member 4 is positioned by abutting a step portion 24 formed on the inner peripheral surface of the hinge body 2, and is positioned from the hinge body 2 in the direction from the screw hole 22 side to the support hole 23 side. It is prevented from getting out. On the other hand, by abutting on the screw member 3, the hinge body 2 is prevented from coming off in the direction from the support hole 23 side to the large diameter hole 21 side.

A rotating body 5 is rotatably connected to the hinge body 2. The rotating body 5 includes a shaft portion 51 and a connecting portion 52, and the connecting portion 52 is
, And the shaft portion 51 is inserted into the hinge body 2. The end of the shaft portion 51 on the connecting portion 52 side is rotatably fitted in the support hole 23, and the opposite end is rotatably fitted in the intermediate member 4. In addition, the shaft portion 51 is formed such that the annular projection 53 formed on the outer peripheral surface of the intermediate portion thereof abuts against the step portion 25 formed on the inner peripheral surface of the hinge body 2, so that the large-diameter hole 2
The stopper is prevented from falling in the direction from the first side to the support hole 23 side, and is stopped in the opposite direction by abutting on the intermediate member 4. Thus, the rotating body 5 is rotatably connected to the hinge body 2. One of the hinge body 2 and the rotating body 5 is connected to the frame, and the other is connected to the door. Thereby, the door is rotatably supported by the frame.

[0010] A coil spring 6 is provided between the intermediate member 4 and the rotating body 5 as a rotation urging member. The coil spring 6 has one end 61 connected to the intermediate member 4 and the other end 62 connected to the rotating body 5. Then, the rotating body 5 is urged to rotate in a direction indicated by an arrow Y in FIG.

A damper mechanism 7 is provided between the hinge main body 2 and the rotating member 5. This damper mechanism 7
Is configured in the same manner as a well-known one, so that it will be briefly described that an annular storage chamber 71 is formed between the inner peripheral surface of the hinge main body 2 and the outer peripheral surface of the shaft portion 51, The accommodation chamber 71 is filled with a fluid such as a viscous fluid. The storage chamber 71 is provided with a partition wall portion 72 formed on the hinge body 2.
And a blade portion 73 formed on the shaft portion 51 divides the first chamber 74 and the second chamber 75 into two. The partition wall portion 72 may be formed on the shaft portion 51, and the blade portion 73 may be formed on the hinge body 2. The partition wall portion 72 and the blade portion 73 may be formed at two addresses.

A one-way valve 76 is provided on the partition wall 73. The one-way valve 76 allows the fluid in the first chamber 74 to pass through the gap 7 between the outer peripheral surface of the shaft 51 and the partition wall 72.
While preventing flow through 7 to the second chamber 75, it allows fluid in the second chamber 75 to flow through the gap 77 to the first chamber. Therefore, when the rotating body 5 rotates in the direction of the arrow X in FIG. 1C, the rotation speed is suppressed to a low speed, and when the rotating body 5 rotates in the direction of the arrow Y, it can rotate at a high speed.

The hinge body 2 and the screw member 3 are fixed by welding. In this case, various welding methods can be adopted. Here, an ultrasonic welding method is adopted. In the ultrasonic welding method, a horn is brought into contact with a member to be welded while being ultrasonically vibrated and melted, and the melted portion is solidified to join both members. In this embodiment, FIG. As shown in FIG. 1, a horn 10 having a flat tip surface and a rectangular cross section is used.

The horn 10 is ultrasonically oscillated in a direction perpendicular to the distal end face, and is pressed against a corner of the hinge 1 with the distal end face inclined with respect to the axis of the hinge 1. Then, the hinge 1 against which the horn 10 is pressed
Of the hinge body 2 and the screw member 5
Is melted. The molten resin protrudes from between the horn 10 and the corner as the horn 10 is pressed. In this case, the tip surface of the horn 10 is inclined so as to approach the axis of the hinge 1 toward the right in FIG. 1, and the angle formed between the tip surface of the horn 10 and the outer end surface of the screw member 5 is Since the angle between the tip surface of the horn 10 and the outer peripheral surface of the hinge body 2 is larger than the angle, the molten resin protrudes toward the outer end surface of the screw member 5. Therefore,
Burrs due to the molten resin do not occur on the outer peripheral surface of the hinge body 2. This is advantageous when the hinge body 2 is inserted into a hole formed in the skeleton, particularly when it is rotatably inserted. The overflowed molten resin is removed after the welding operation is completed.

The horn 10 includes a hinge body 2 and a screw member 5.
Is pressed against the corner until it is opposed to the contact surface. Here, the contact surface between the hinge body 2 and the screw member 5 is the inner peripheral surface and the bottom surface of the former large-diameter hole portion 21 and the female screw surface.
These are the outer peripheral surface and inner end surface of the latter flange portion 52 and the male screw surface. These contact surfaces and their neighboring portions (hereinafter, referred to as contact surface portions) are also melted by the horn 10. Then, the molten resin of the hinge body 2 and the screw member 5 are mixed with each other, and solidified after the horn 10 is separated from the corner. Thereby, the hinge main body 2 and the screw member 5 are joined at the contact surface. In this case, when the hinge body 2 and the screw member 5 are formed of the same resin, the two are more uniformly integrated, and the joining strength is improved.

At the corner where the horn 10 is pressed, a recess 11 having a shape corresponding to the horn 10 and extending obliquely to the corner is formed. A line indicating the contact surface should appear on the side surface defining the concave portion 11 as shown by a broken line in FIG.
Since the molten resin of each contact surface portion is mixed and integrated, a line indicating the contact surface does not actually appear on the side surface of the concave portion 11.

When the hinge main body 2 and the screw member 5 are welded, the resin forming each of them is melted, mixed, and then solidified, so that the two are joined. Absent. Therefore,
The loosening of the screw member 5 can be reliably prevented. In particular, when the screwed portion between the damper body 2 and the screw member 5 is melted, the melted resin enters between the screw faces and exerts an adhesive effect, so that it is possible to join more firmly.

Next, another embodiment of the present invention will be described. The following embodiment is different from the above embodiment only in the external shape and the welding form of the hinge main body 2, and the coil spring 6 and the damper mechanism 7 provided between the hinge main body 2 and the rotating body 5. Are the same as those in the above embodiment. Therefore, in the following embodiment, only a structure different from the above embodiment will be described.

The hinge 1 'shown in FIG. 2 has four mounting portions 26 formed on the outer peripheral surface of the hinge main body 2, and screws (not shown) inserted into each mounting portion 26 are screwed to the frame. Thus, the hinge 1 'is fixed to the frame. As is clear from this, in the hinge 1 ', the hinge main body 2 is not inserted into the accommodation hole or the like of the frame and does not rotate with respect to the frame. Therefore,
In welding the hinge body 2 and the screw member 5, even if the molten resin flows on the outer peripheral surface of the hinge body 2 to form burrs, there is almost no problem. Therefore, in this embodiment, as shown in FIGS. 2C and 2D, a horn (not shown) having a quadrangular cross-section having a pyramid-shaped distal end portion penetrates the hinge body 2. The screw member 5 is pushed from the outer peripheral surface of the male screw portion 51 until it slightly enters the inside thereof. Thereby, a hole 12 having a shape corresponding to the horn is formed in the hinge body 2 and the screw member 5. Screw surface (contact surface) of hinge body 2 and screw member 5 facing this hole 12
And its vicinity are melted by the horn. When the molten resin is solidified, the hinge body 2 and the screw member are joined. Therefore, the screw member 5 can be prevented from being loosened also in the hinge 1 '.

In the hinge 1 ″ shown in FIG. 3, a protrusion 27 having a triangular cross section for preventing rotation is formed on the outer peripheral surface of the hinge main body 2. When the protrusion 27 is entirely solid, There is a possibility that the hinge body 2 will be deformed after molding, so that the protruding portions 27 are arranged in parallel with each other with the plurality of triangular plate portions (partition portions) 27a oriented in a direction orthogonal to the axis of the hinge body 2. One side of each plate portion 27a is integrally connected by another plate portion (partition portion) 27b.

In the case where the projection 27 is formed, when the hinge 1 "is installed on the frame or used, the outer peripheral surface divided by the plate portions 27a comes into contact with the frame or the like. In this hinge 1 ″, the plate portion 27 is not used.
The hinge body 2 and the screw member 3 are welded by forming the hole 12 on the outer peripheral surface of the hinge body 2 divided by a and 27a. In this way, even if the burr is formed by the molten resin protruding from the hole 12,
This is because it is often unnecessary to remove the burrs.

It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, in the above-described embodiment, the intermediate member 4 is interposed between the rotating body 5 and the screw member 3, but the rotating member 5 may be directly stopped by the screw member 3.

[0023]

As described above, according to the present invention, since the hinge main body and the screw member are welded, the hinge main body and the screw member are prevented from peeling off due to an impact when the door is opened and closed. Therefore, the loosening of the screw member can be prevented reliably and for a long time.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, wherein FIG. 1 (A) is a longitudinal sectional view thereof, and FIG.
FIG. 1C is a cross-sectional view taken along line CC of FIG. 1A.

FIG. 2 is a view showing another embodiment of the present invention,
2A, 2B, and 2C are a front view, a side view, and a plan view, respectively, and FIG. 2D is an enlarged cross-sectional view taken along line DD of FIG. 2C.

FIG. 3 is a view showing still another embodiment of the present invention, wherein FIG. 3 (A) is a side view thereof, and FIG. 3 (B) is FIG.
3 (A), FIG. 3 (C), and FIG. 3 (D) respectively show FIG.
It is an expanded sectional view which meets a CC line and a DD line of (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge 1 'hinge 1 "Hinge 2 Hinge main body 3 Screw member 5 Rotating body 27a Plate part (partition part) 27b Plate part (partition part)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryosuke Bando 1-8-11 Higashikanda, Chiyoda-ku, Tokyo Inside Sugatune Industry Co., Ltd. (72) Inventor Genichi Sato 1-8-11 Higashikanda, Chiyoda-ku, Tokyo (56) References JP-A-11-141219 (JP, A) JP-A-11-313784 (JP, A) JP-A-6-307149 (JP, A) JP-A-11-268135 (JP, A) JP-A-10-273115 (JP, A) JP-A-2000-202912 (JP, A) JP-A-3-69530 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , (DB name) E05D 5/12 E05D 9/00

Claims (4)

(57) [Claims] 1. A hinge body having a fitting hole, a rotating body having a shaft rotatably inserted into the fitting hole, and a screw body fixedly secured to one end of the hinge body. A screw member for preventing the hinge body from coming out of the fitting hole, wherein in the hinge in which the hinge body and the screw member are formed of resin, adjacent corners of the hinge body and the screw member are adjacent to each other.
Melt the part so that a diagonally extending recess is formed there
By doing so, the angle between the hinge body and the screw member
A hinge wherein parts are welded to each other. A hinge body having a fitting hole;
A rotating body having a shaft rotatably inserted into the hole;
The hinge is fixed to one end of the hinge body, and the rotating body is
A screw member for preventing the fitting member from falling out of the fitting hole.
The hinge body and the hinge member are formed of resin.
The hinge body and the screw member as one of them.
So that a hole from one outer peripheral surface to the other outer peripheral surface is formed
The hinge body and the screw member
The inner peripheral surface and the outer peripheral surface are welded to each other.
That hinge. 3. An outer peripheral surface of the hinge body is formed of the screw member.
The outer peripheral surface of the hinge body is disposed outside the outer peripheral surface of the hinge body.
Has a partition that separates one part from the other
Within the range defined by this partition
The hinge according to claim 2 , wherein the hole is opened . 4. The method according to claim 1, wherein the hinge body and the screw member are connected to each other by a small amount.
At least at the threaded parts that are screwed together.
The hinge according to any one of claims 1 to 3, characterized in that: