JPH057420Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is based on the invention that when the opening force of an opened door is removed,
This invention relates to a self-closing hinge that has the function of automatically returning the door to the closed state due to gravity.

(Prior Art) Many automatic closing hinges have been proposed that have the function of automatically returning an opened door to the closed state, but a representative example is Utility Model Application No. 58-168679. There are those described in the official gazette and Japanese Utility Model Application No. 60-15369.

In all of these basic configurations, shaft tubes formed at one end of each of the blade plates on the fixed side and the rotating side are fitted and held by a shaft rod, and the sliding surface of the shaft tube is By cutting diagonally to form an inclined sliding surface, and by their relative rotation, the shaft cylinder on the rotating side is raised, and when the opening force is removed, the rotational torque generated on the inclined sliding surface due to the gravity of the door The door is automatically rotated back to the closed state.

(Problem to be solved by the invention) A common drawback of conventional products of this type is that the inclined slide surface is formed by cutting both shaft cylinders diagonally, so the slide surface is formed in linear surface contact. When the door is closed and stationary, the sliding surfaces are in full contact and there is no problem, but when the door is in operation and the rotating side is raised due to relative rotation, the contact area of the sliding surfaces becomes smaller, and the weight of the door increases. Since the door is loaded with such loads, it is heavy and does not open smoothly when the door is opened.Furthermore, the contact parts are heavily worn and the durability is poor, so it cannot be used particularly for heavy doors.

(Means for Solving the Problems) The present invention has been developed by focusing on the problems of the conventional art, and is based on the sliding double-shaft cylinders formed at one end of the upper and lower blade plates. On the attached double shaft rod,
The purpose of this invention is to solve the above-mentioned problems by providing a function for automatically returning the opened door and dramatically improving the performance of the hinge.

The present invention consists of upper and lower slats 5 and 1 each having upper and lower tube portions 7 and 3 each having one end of a rectangular plate-shaped member bent into a tubular shape, and a flange portion 14 which is protruded from one side. In addition, a shaft portion 13 is fitted into either the upper end portion of the lower tube portion 3 or the lower end portion of the lower tube portion 3 and is attached to the shaft portion 13 so as not to rotate; a lower shaft rod 11 provided with a sliding shaft portion 16 having a diameter smaller than that of the shaft portion 13;
A bearing flange 20 protruding from one side of a bearing flange 20 that is fitted into another tube 7 opposite to the tube 3 to which the shaft 13 is attached and is unrotatably attached. A slide receiving surface 21 having a required inclination to slide on the slide surface 15 is formed at the inner tip of the shaft portion 19 and the shaft portion 19 that protrudes from the axis of the bearing shaft portion 19.
The self-closing hinge 23 is characterized by being comprised of an upper shaft 17 having a sliding hole 22 into which the sliding shaft 16 is fitted. (The reference numerals in the text are those used in the examples described later.) (Function) The self-closing hinge has the function of automatically returning the door to the upper and lower slats. Since the movement is performed by the sliding surface and the sliding receiving surface provided on the upper and lower shaft rods attached to the Since the sliding shaft part is fitted into the sliding hole of the bearing shaft part, the door can always be opened and closed very smoothly, and furthermore, wear on the contact parts is significantly reduced and its service life is extended.

In addition, the self-closing hinge has upper and lower blades that can be easily made by press processing, and upper and lower blades that are easy to manufacture molded products.
Since it can be assembled by simply inserting or fitting the lower shaft rod, the number of assembly steps is extremely reduced, and since no special materials are used, it can be manufactured at low cost.

Further, in the self-closing hinge of the present invention, the lower shaft rod 11 is provided with a sliding shaft portion 16 having a smaller diameter than the shaft portion 13,
Since this sliding shaft portion 16 is fitted into the sliding hole 22 of the upper shaft lever 17, the upper and lower axes are accurately aligned, allowing smooth opening and closing of the door and automatic opening and closing operations.

(Example) The present invention will be described in detail below based on FIGS. 1 to 8 showing one example thereof. 1 is a rectangular plate-like member made of steel or stainless steel, etc., with a notch 2 provided at the upper end thereof, and a lower tube portion 3 formed by bending one end into a tubular shape and having a predetermined inner diameter, and a lower tube portion 3 for attaching to a target object. The lower blade plate 5 is provided with a plurality of screw holes 4, and is made by bending one end of a rectangular plate-like member made of the same material with a notch 6 provided at the lower end into a tubular shape and having the same inner diameter as the lower tube part 3. an upper tube part 7 formed of
8 is an upper and lower pipe part 7,
3, and a disk-shaped head 10 connected to one end of the leg 9 that covers the open end. It is an imitation jewel made of synthetic resin such as nylon.

11 is press-fitted from the upper open end of the lower tube part 3,
Furthermore, a cylindrical shaft part 13 is attached to the lower tube part 3 in a non-rotatable manner by fitting a projection 12 provided on the upper end peripheral wall into the notch part 2. An annular flange 14 having the same outer diameter as the head 10 is connected to one end of the side, and an annular flange 14 is connected to the flange 14 on the axis of the shaft 13 and has an outer end inclined at a predetermined angle. a cylindrical sliding shaft portion 16 formed with a sliding surface 15 and having a smaller outer diameter than the shaft portion 13;
Lower shaft rod made of synthetic resin such as nylon, 1
7 is press-fitted from the lower open end of the upper tube portion 7, and the protrusion 18 provided on the peripheral wall of the lower end portion is fitted into the cut corner portion 6, so that it is unrotatably attached to the upper tube portion 7. A cylindrical bearing shaft portion 19 and a protrusion 18 on the shaft portion 19
A disc-shaped bearing flange 20 having the same outer diameter as the flange 14 is connected to one end of the side, and a sliding member is bored on the axis of the shaft 19 and the bearing flange 20. Moving shaft part 1
A sliding hole 22 into which a slide hole 6 is fitted and a slide receiving surface 21 having the same slope as the slide surface 15 is formed at the inner tip.
The upper shaft rod is made of the same material as the lower shaft tube 11.

23, the leg part 9 is press-fitted into the lower open end of the lower tube part 3 to attach the artificial jewel 8, and then the shaft part 13 is fitted into the upper open end, and the protrusion 12 is fitted into the notch part 2 to form the lower part. The lower blade plate 1 is assembled with the shaft rod 11 attached, and the legs 9 are press-fitted from the upper open end of the upper tube section 7 to attach the pseudo jewel 8, and then the bearing shaft section 19 is inserted from the lower open end. Insert and then protrude 1
8 into the notch 6 and the upper shaft rod 17 is attached.
Assemble by inserting the sliding shaft portion 16 of the lower shaft rod 11 mounted on the lower pipe portion 3 of the lower blade plate 1 into the sliding hole 22 of the upper shaft rod 17 mounted on the upper pipe portion 7. self-closing hinge.

This self-closing hinge 23 is constructed by attaching the lower slat 1 to a door frame, door frame, wall, etc. with screws through screw holes 4, and attaching the upper slat 5 to one end of the door, door, etc. with screw holes 4. It is used by attaching it with screws.

When the door is opened, as the upper wing plate 5 rotates, the slide surfaces 15 and slide receiving surfaces 21 of the upper and lower shaft rods 17 and 11 slide, and the slide surfaces 15 move the upper shaft rod 17 through the slide receiving surfaces 21. is raised upwards, and when the opening force is removed, the door automatically rotates back and closes due to rotational torque generated on the sliding surface 15 and the sliding receiving surface 21 due to the gravity of the door.

In this case, the automatic return function of the hinge 23 is performed between the slide surface 15 and the slide receiving surface 21 provided on the upper and lower shaft rods 17 and 11, so that the two surfaces do not touch each other during rotation. Partial contact state is maintained, and the sliding shaft portion 16 is in contact with the bearing shaft portion 1.
Since it fits into the sliding hole 22 of No. 9, no uneven load is applied to the upper and lower shaft rods 17, 11, so the door can always be opened and closed extremely smoothly, and there is no wear on the contact parts. significantly less, resulting in a longer service life.

In addition, the hinge 23 can be easily made by pressing.
Since the lower wing plates 5, 1, the pseudo-hoju 8, which are easy-to-manufacture molded products, and the upper and lower shaft rods 17, 11 can be assembled by simply inserting or fitting them together, the number of assembly steps is extremely reduced. Since no materials are used, it can be manufactured at low cost.

In the above embodiment, the notches 6, 2 are
Although they are provided at the bases of the upper and lower tube portions 7 and 3, they may not necessarily be provided at the bases but may be provided at other appropriate locations on the open ends.

In addition, in order to make the upper and lower shaft rods 17 and 11 on which the upper and lower pipe parts 7 and 3 are attached unrotatable, the cutout parts 6 and
2, but the upper and lower shaft rods 17 and 11 are fitted into the upper and lower pipe parts 7 and 3 without providing the notches 6 and 2 and the projections 18 and 12, respectively.
Alternatively, the shaft portions 19 of the upper and lower shaft rods 17, 11 may be bonded to
The outer shape of the tube 13 may be shaped to match the inner cross-sectional shape of the upper and lower tube portions 7 and 3 (not a perfect circle but an elongated shape near the base).

In addition, the lower shaft rod 11 is inserted from the upper open end to the lower tube part 3,
Although the upper shaft rod 17 is inserted into the upper tube part 7 from the lower open end, depending on the purpose of the hinge 23, the lower shaft rod 11 and the upper shaft rod 17 may be used in reverse. It becomes necessary to change the positions of parts 2 and 6.

(Effects of the invention) Since the invention has the above configuration, it has the following effects.

(1) The automatic return function is performed when the sliding surface and the sliding bearing surface are in full or partial contact with each other, and the sliding shaft portion with the sliding surface is for bearings equipped with the sliding bearing surface. Since the door is fitted with the shaft, the door always opens and closes smoothly, giving customers a sense of satisfaction.

(2) The automatic return function is performed with the sliding surface and the slide receiving surface in full or partial contact between the two surfaces, and furthermore, the sliding shaft part for the bearing with the sliding surface is connected to the shaft with the sliding receiving surface. Since there is no unbalanced load applied to the sliding surface due to mating with the
Since there is little wear on the sliding surfaces and the service life is long, it is extremely economical.

(3) The easy-to-manufacture double wing plates and the easy-to-manufacture upper and lower shaft rods, which are easy-to-manufacture molded products, can be assembled by simply inserting or fitting them together, so the number of assembly steps is extremely small, and no special materials are required. Since it is not used, it can be manufactured at low cost.

(4) Despite its excellent functionality, it can be provided at a low price, contributing to increased sales and corporate profits.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 shows a hinge according to the invention, Fig. 2 shows a lower slat, Fig. 3 shows an upper slat, Fig. 4 shows a fake jewel, and Fig. 5 shows a lower shaft rod. ,
Fig. 6 shows the upper shaft rod, each A is a front view, B is a plan view, Fig. 7 is a perspective view for explaining the assembly of the lower slat, and Fig. 8 is for explaining the assembly of the upper slat. FIG. 1... Lower blade plate, 2, 6... Notch, 3...
Lower pipe part, 5... Upper blade plate, 7... Upper pipe part, 11
... lower shaft rod, 12, 18 ... projection, 13 ... shaft section, 15 ... sliding surface, 16 ... sliding shaft section, 1
7... Upper shaft rod, 19... Bearing shaft section, 21...
Slide receiving surface, 22...sliding hole, 23...self-closing hinge.

Claims (1)

[Claims for Utility Model Registration] 1. Upper and lower slats 5 and 1 each having upper and lower tube portions 7 and 3 with one end of a rectangular plate-shaped member bent into a tube shape, and one of the flange portions 14. A shaft portion 13 protruding from the side surface and fitted into either the upper end of the lower tube portion 3 or the lower end of the lower tube portion 3 and attached unrotatably.
A slide surface 15 is formed on the upper end of the flange 14 and protrudes from the other side surface of the flange 14 on the axis of the shaft 13 and is inclined at a predetermined angle. 16 and a lower shaft rod 11 with
and a bearing flange 20 protruding from one side surface of the bearing flange 20, which is fitted into the other tube 7 facing the tube 3 to which the shaft 13 is attached and is unrotatably attached. a bearing shaft portion 19; and a slide receiving surface 21, which is protruded from the axis of the bearing shaft portion 19 and has a required inclination at its inner tip to slide on the slide surface 15.
and an upper shaft lever 17 having a sliding hole 22 in which the sliding shaft portion 16 is fitted. 2. By fitting the protrusion 12 at the upper end of the shaft portion 13, which is connected to the collar portion 14, into the notch portion 2 provided at the upper open end of the lower tube portion 3 of the lower blade plate 1. The self-closing hinge according to claim 1, which is provided with a lower shaft rod 11 that is non-rotatably attached to the lower pipe portion 3. 3. Fit the protrusion 18 at the lower end of the bearing shaft part 19, which is connected to the bearing collar part 20, into the notch part 6 provided at the lower open end of the upper tube part 7 of the upper blade plate 5. The self-closing hinge according to claim 1 or 2, wherein the self-closing hinge is provided with an upper shaft rod 17 non-rotatably attached to the upper tube portion 7. 4 Claims 1 to 3 for utility model registration with upper and lower shaft rods 17 and 11 made of synthetic resin
A self-closing hinge according to any one of paragraphs.