JPH0235979Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hinge structure equipped with a torsion spring, and aims to facilitate assembly.

Regarding the hinge structure that connects the lid and the container,
Some have a structure in which a torsion spring is fitted to the hinge shaft.

This is done by bringing one end of the torsion spring into elastic contact with a part of the lid, and the other end into elastic contact with a part of the container, and then performing a predetermined operation with the lid closed and locked against the container. When released, the lid opens due to the elastic force of the torsion spring in the circumferential direction.

However, in this configuration, the hinge shaft must be inserted into the shaft hole drilled in the lid and the container while partially locking both ends of the torsion spring to the lid and the container. Moreover, it is also necessary to insert the inside of the torsion spring at the same time, so it is difficult to handle the torsion spring, which has elastic force in the circumferential direction, while applying a force that resists this elastic force, making it difficult to align and insert the spring. This was an extremely time-consuming and difficult process.

The present invention relates to a hinge structure devised to eliminate the above-mentioned drawbacks and inconveniences of the conventional art. A locking portion for locking the other end of the torsion spring is provided, and a locking piece is provided at the opening end of the recess, the locking piece being located substantially opposite to the locking portion and capable of temporarily locking the other end of the torsion spring. It is the composition.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a lid body, which has a structure in which a hinge piece 3 is protruded from the base end of a flat lid body 2. This hinge piece 3 is a plate part formed by extending the lid body 2. A cylindrical part 5 that forms a shaft hole 6 is integrally attached to the inner surface of the cylindrical part 4, and one end of the cylindrical part 5 has an extremely large diameter and a recess 7 in which a torsion spring 28, which will be described later, is housed. Further, at the open end of the recess 7, the side portion of the plate portion 4 slightly protrudes laterally, and a locking piece 8 is formed.

Next, reference numeral 11 is a container, and in the illustrated embodiment, an assembly cylinder 13 is screwed and assembled to the upper end of the container 12 in the shape of a cylinder with a bottom. An inner flange 15 is provided around the upper end, and a short tube 16 is erected at the inner peripheral end of the inner flange 15,
Furthermore, an engagement strip 17 is provided on the inner circumferential surface of the upper end of the short tube 16.
are provided around the area.

The upper end of the peripheral wall 14 is cut out corresponding to the hinge piece 3 of the lid 1, and an assembly recess 19 is formed with the inner flange 15. In the illustrated embodiment, this assembly recess A hole is bored in a portion of the inner flange 15 along the circumferential wall 14 in the inner flange 19 to serve as a locking portion 20, and a bearing 21 is bored in the circumferential wall 14 so as to open at the center of the side surface of the recessed portion 19.

Next, reference numeral 23 denotes a packing that is fitted into the assembly cylinder 13, and has a structure in which an outer flange 25 is provided around the lower end of the cylinder part 24. The width of the outer flange 25 is approximately equal to the inner diameter of the peripheral wall 14.

This packing 23 is tightly fitted into the assembly cylinder 13 from below, and when the assembly cylinder 13 is screwed and assembled to the container 12, the outer flange 25 is attached to the container 12 at the upper end of the mouth cylinder and the inner flange 15. A seal is achieved by sandwiching the material between the two.

In order to reliably achieve this seal, it is recommended to provide a groove 25a around the peripheral end of the outer flange 25 to facilitate elastic deformation.

Further, on the outer circumference of the upper end of the cylindrical portion 24, a protrusion 26 is provided around the upper end of the short tube 16 of the assembly cylinder 13 and engages with the engagement strip 17, and on the inner circumference of the upper end, as will be described later. An elastic piece 27 that comes into close contact with the inner surface of the lid 2 when the lid 1 is closed is provided diagonally upward and in the shape of an inner flange.

Next, the torsion spring 28 has respective end portions formed by linearly extending thread forming wire rods in the radial direction from both ends, and these end portions protrude in the opposite direction. The locking piece 8 is fitted into and stored in the recess 7, and its one end comes into elastic contact with the 4 surfaces of the plate inside the recess 7, and the other end protrudes from the open end of the recess 7 to form a locking piece 8.
It is in ballistic contact with the

That is, the other end of the torsion spring 28 is connected to the locking piece 8.
By coming into elastic contact with the lid body 2, the lid body 2 extends substantially along the direction of the extension line of the lid body 2, as can be understood from FIG.

Now, as shown in FIG. 2, when the above-mentioned lid 1 is opened perpendicularly to the container 11 and the hinge piece 3 and the assembly recess 19 face each other, the locking piece 8 and the hole-shaped locking part 20, the other end of the torsion spring 28 assembled in the hinge piece 3 comes into elastic contact with the locking piece 8 and projects in the direction of the locking part 20.

Therefore, the hinge piece 3 is inserted into the assembly recess 19 in this mutual posture, and the axis of the shaft hole 6 of the hinge piece 3 is aligned with the axis of the shaft hole 21 of the container 11, and the torsion spring 28 is aligned. The other end is brought into elastic contact with the locking part 20, and the hinge shaft 29 is inserted from the outer end of the shaft hole 21 of the container 11, thereby assembling the lid 1 and the container 11.

Further, in the above embodiment, the locking portion 20 is formed by drilling a hole in the inner flange 15, but the locking portion 20 may be formed on the upper surface of the inner flange 15 itself.

That is, in this case, the lid body 1 is inverted with respect to the container 11 at an angle of 180 degrees, and the hinge piece 3 is
When the locking pieces 8 and the locking part 20, which is the upper surface of the inner flange 15, are opposed to each other at the rear of the assembly recess 19, the other end of the torsion spring 28 is elastically attached to the locking piece 8. It touches and protrudes in the direction of the locking part 20. Then, assemble the hinge piece 3 in this mutual posture and insert it into the recess 1.
9 from the rear, the other end of the torsion spring 28 is brought into elastic contact with the locking portion 20, and the hinge shaft 29 is fitted (see FIG. 4).

FIG. 5 shows the assembled state of this embodiment.

Note that the inner surface of the tip of the lid body 2 and the container 11
A locking piece 9 is hung down at a position facing the outer circumference of the short tube 16, and a locking strip 10 is provided on the rear surface of the locking piece 9. There is also a locking strip 18 at a position corresponding to the locking piece 9.
is installed protrudingly. Therefore, when the lid body 1 is closed,
Both locking strips 10 and 18 are locked by riding over each other,
This maintains the closed position of the lid 1 and container 11.

In addition, the inner flange 15 at the tip of the assembly cylinder 13 of the container 11
A recessed portion 22 is provided from the inner flange 15 to the peripheral wall 14, and a pressing piece 30 is attached therein so as to be swingable in the direction of the arrow by a shaft 31 extending along the circumferential direction of the inner flange 15.

When the lid 1 is closed, the tip of the lid 2 is in contact with the upper surface of the rear part of the pressing piece 30 than the shaft 31, and therefore pushes down the front part of the pressing piece 30 that is exposed to the outside. The rear part of the pressing piece 30 pushes up the tip of the lid 2, and the locking by the locking strips 10 and 18 is released.

By the way, both ends of the torsion spring 28 mentioned above are locked to the locking part 20 in the recess 7 and apply elasticity in the opening direction of the lid body 1, so that both the locking strips 1
0 and 18, the lid 1 will immediately open.

As is clear from the above description, in the hinge structure of the present invention in which the lid 1 and the container 11 are hingedly connected by the torsion spring 28 and the hinge shaft 29, the lid 1 in which the torsion spring 28 is housed Since the locking piece 8 is provided at the open end of the concave portion 7 of the hinge piece 3 facing the locking portion 20 of the container 11, one end is secured before the lid 1 and the container 11 are assembled. Recess 7
The other end of the torsion spring 28 locked inside is temporarily locked in the locking piece 8, and the torsion spring 28 is locked in the recess 7.
Therefore, the hinge piece 3 is held in place so that the lid body 1 is held at right angles to the container body 11.
When inserted into the assembly recess 19, the torsion spring 2
The other end of the hinge 8 is guided by the locking piece 8 and easily locks into the locking part 20, and the axes of the shaft holes 6, 21 and the torsion spring 28 are aligned to align the hinge shaft 29. Can be fitted.

Note that in this embodiment, when the lid 1 is closed, the lid 2
Since the inner surface is in close contact with the elastic piece 27 of the packing 23, the sealing of the container is ensured.

Therefore, according to the present invention, the lid can be assembled to the container and the hinge shaft can be inserted while the other end of the torsion spring is temporarily held in a desired position, so that
The assembly work is extremely simple, the torsion spring can be reliably locked in a desired state, the structure is simple, and molding is easy.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. FIG. 2 is an enlarged sectional view showing how the lid and the container are assembled. FIG. 3 is an enlarged front view showing the hinge piece of the lid. FIG. 4 is an enlarged sectional view showing another embodiment. FIG. 5 is a sectional view showing a portion of the same. Explanation of the code, 1... Lid body, 3... Hinge piece, 6...
... shaft hole, 7 ... recess, 8 ... locking piece, 11 ... container, 13 ... assembly cylinder, 20 ... locking part, 21 ...
...Shaft hole, 23...Putskin, 28...Torsion spring, 29...Hinge shaft.

Claims (1)

[Scope of utility model registration request] The hinge structure connects the lid and the container by a hinge shaft into which a torsion spring is fitted, and the torsion spring is inserted at one end into the shaft hole opening of either the lid or the container. A recess for locking and storing is provided, and a locking portion for locking the other end of the torsion spring is provided on the other side, and a locking portion for locking the other end of the torsion spring is provided at the open end of the recess, and the locking portion is located substantially opposite to the locking portion, and A hinge structure with a locking piece that can temporarily lock the other end of the torsion spring.