JPH0317021Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a hinge with a catch that is attached across a door and the inner surface of a door opening frame.

``Prior Art'' As a hinge used for furniture such as a cabinet, a hinge in which a groove-shaped member and a cup-shaped member are rotatably and bendably connected via two arms is well known.

A door attached to a door opening frame via such a hinge is often opened involuntarily when an unexpected external force is applied to the door.

As a countermeasure for this, in countries where Western-style furniture is developed, such as Europe, a catch mechanism (also called a stopper mechanism) is added to the above-mentioned hinge to keep the door closed.

This type of mechanism was often found in hinges imported from West Germany in 1981.

One example is one in which either the groove-shaped member or the cup-shaped member is provided with a protrusion for generating relative friction between the groove-shaped member and the cup-shaped member.

In such a friction type catch mechanism, when the door is closed, a protrusion interposed in a part of the groove-shaped member and the cup-shaped member is compressed, and the protrusion creates a large static friction between the groove-shaped member and the cup-shaped member. Occur.

Therefore, the door will not open unless a force that exceeds this frictional force is applied.

However, although the hinge catch mechanism described above is reasonably effective in keeping the door closed,
Since a large frictional resistance is generated between the protrusion and the corresponding part, the light and smooth opening and closing of the door is hindered, and the wear and tear of the parts is also increased.

As a countermeasure to this problem, a hinge with a catch as illustrated in FIGS. 4 and 5 has been proposed, and its configuration is as described below.

4 and 5, the hinge includes a groove-shaped member 1, a cup-shaped member 2, and two arms 3, 4 as main components.

A spring seat 5 is integrally formed inside the groove-shaped member 1 at an intermediate portion thereof in the longitudinal direction.

The two arms 3 and 4 are arranged in parallel to each other across the connecting end 1a of the channel member 1 and the connecting end 2a of the cup-shaped member 2, and the respective connecting ends of the channel member 1 and the cup-shaped member 2 are arranged in parallel. The parts 1a, 2a and the ends of the arms 3, 4 are pivotally connected to each other via respective shaft pins 6, 7, 8, 9.

Note that when the groove-shaped member 1 and the cup-shaped member 2 are bent, the arm 4 located closer to the groove-shaped member 1 has a convex cam 11 having a dead point 10 at the arm end on the groove-shaped member 1 side. It is provided.

4 and 5, a pair of symmetrical coiled springs 12, 13 have coiled portions 14, 15, and coiled portions 14, 15, respectively.
a locking portion 16 extending in opposite directions from both ends of the
17 and extensions 18 and 19, and these extensions 1
8, 19 bearing portion 20 bent inward from the end;
21 are integrally formed, and the hollow roller 22 has an axial hole 23 in its axial center.

The pair of coiled springs 12 and 13 are each supported via a roller support shaft 24 that extends through the coiled portions 14 and 15 and is installed in the longitudinally intermediate portion of the groove member 1. is supported at both ends via bearing parts 20, 21 of both coiled springs 12, 13 fitted into both ends of the shaft hole 23, and both coiled springs 12, 1
The locking portions 16 and 17 of the groove-shaped member 1 are held via the spring receiving seat 5 of the groove-shaped member 1, and the hollow roller 22 receives the elastic force of both the coiled springs 12 and 13 to move the cam 11. It is in pressure contact with the

In the case of the hinge with a catch shown in FIGS. 4 and 5, the channel-shaped member 1 is attached to the inner surface of the door opening frame 25 by known means, and the cup-shaped member 2 is also attached to the door 26 by known means.

These groove-shaped member 1 and cup-shaped member 2 are connected via both arms 3, 4 and respective shaft pins 6, 7, 8, 9 so as to be relatively rotatable and relatively flexible.
As is obvious, the door 26 can be moved to open and close relative to the door opening frame 25.

When the door 26 is closed in the above, the hollow roller 22 passes over the dead point 10 of the cam 11 and is displaced to the right of the cam 11, as shown in FIG. 4, and both coiled springs 1 in this state
2 and 13 push one end of the arm 4 in the counterclockwise direction, so that the closed state of the door is maintained.

``Problem to be solved by the invention'' The hinge catch shown in Figs. 4 and 5 is composed of a spring and a roller, so the door can be opened and closed easily and smoothly using the roller as the main component, and there is no wobbling caused by the spring. Although it seems that prevention has been achieved and it can withstand long-term use, in reality, the following technical issues remain.

For example, in the shaft hole 23 of the hollow roller 22 and the bearing parts 20, 21 of both coiled springs 12, 13, the inner and outer diameters of the shaft hole 23 and the bearing parts 20, 21 do not correspond precisely, and these rotating parts ( If there is an extra gap in the fitting part), the coiled springs 1 tend to spread outward as shown in Figure 5.
2 and 13 incline the bearing parts 20 and 21 with respect to the axis of the shaft hole 23.

When the shaft hole 23 and the bearings 20 and 21 are in such a fitted state, the smooth rotation of the hollow roller 22 is inhibited, and if the hollow roller 22 is forcibly rotated, the hollow roller 22 has a hardness lower than that of the spring material. wears unevenly.

In addition, if the hollow roller 22 is thin and has low strength, it will be deformed (curved) by both coiled springs 12 and 13 that tend to expand outward.

Therefore, when manufacturing the hollow roller 22 in the hinge with a catch shown in FIGS. 4 and 5,
It is necessary to select a high-strength metal rod with high hardness and perform high-precision drilling while leaving sufficient wall thickness. An increase in parts costs is unavoidable.

In view of these technical problems, the present invention aims to provide a hinge with a catch that can achieve a high degree of catch function, durability, and reduce the cost of parts by improving the structure of the hollow roller.

``Means for Solving the Problems'' In order to achieve the intended purpose, the present invention includes a groove-shaped member, a cup-shaped member, and two arms, and connects the connecting end of the groove-shaped member and the cup-shaped member. Two arms are arranged in parallel to each other across the end, and each connecting end of the groove-shaped member and the cup-shaped member and each end of both arms are pivotally connected to each other via each axis pin. Of the two arms, the arm located closer to the groove member when the groove member and the cup member are bent has a convex shape with a dead point at the arm end on the groove member side. The cam is provided with a coil winding part, a locking part and an extension part extending in opposite directions from both ends of the coil winding part, and a bearing part bent inward from the ends of the extension part. A pair of integrally formed coiled springs are each supported via a roller support shaft that extends through the coiled portion of each coiled spring and is installed in a longitudinally intermediate portion of the groove-shaped member,
A hollow roller having a shaft hole in its shaft center is supported at both ends via bearings of both coiled springs fitted into both ends of the shaft hole, and the locking portions of these coiled springs are A hinge with a catch, which is held via the groove-shaped member and in which the hollow roller is pressed against the cam by receiving the elastic force of both coiled springs, includes a hollow spring pin having a slit along the axial direction. is compressed in the radial direction within the remaining range of the slit and fitted into the shaft hole of the hollow roller,
Further, the outer circumferential surface of these spring pins and the inner circumferential surface of the shaft hole are in close contact with each other, and the bearing portions of the two coiled springs are fitted into both ends of the spring pin.

``Function'' In the case of the hinge with a catch according to the present invention, the groove-shaped member and the cup-shaped member are connected through both arms and each shaft pin so that they can rotate and bend relatively freely. In a well-known installation method in which a cup-shaped member is attached to the frame and the door, the door can be opened and closed with respect to the door opening frame, and when the door is closed, it receives the elastic force of both coiled springs. Since the hollow roller in the door pushes the cam provided on the predetermined arm in the door closing direction, the door is kept in the closed state.

The hollow roller in this invention has a double structure together with the hollow spring pin fitted into its shaft hole, so it becomes a high-strength structure that combines the strength of the spring pin and can withstand long-term use. Deformation is unlikely to occur.

Therefore, the hollow roller does not require special strength, and can be made of a thin, inexpensive material such as a pipe material that does not require drilling.

The spring pin in the present invention is, for example,
It is obtained by rolling and forming materials such as metal plates and metal strips using known metal processing means.

In this case, the inner diameter of the spring pin is the width of the material,
By appropriately setting the thickness, winding diameter, etc., it is possible to precisely match the outer diameter of the bearing portion of the coil-wound spring, so machining such a spring pin does not require particular difficulty.

Moreover, the hollow spring pin fitted into the shaft hole of the hollow roller has a slit left behind, which becomes an oil reservoir, making it easy to ensure lubricity between the bearing part of the coiled spring and the spring pin. can do.

``Example'' In the hinge with a catch according to the present invention,
The structure of the hinge part is the same as that explained in FIGS. 4 and 5 above, and the structure of the catch part is also as follows.
It is substantially the same as that explained in FIGS. 4 and 5 above, except for the structure of the hollow roller.

Therefore, in the embodiments of the present invention described below, the configuration of the parts common to those already described is the same as the fourth embodiment.
By referring to the contents of FIGS. 4 and 5, the explanation thereof may be omitted, and the explanation contents, symbols, etc. of FIGS. 4 and 5 may be cited as necessary.

1 to 3, the hollow roller 22 has a shaft hole 23 at its axial center, and the hollow spring pin 27 has a slit 28 along its axial direction.

The hollow roller 22 is made of, for example, a thin metal pipe.

The hollow spring pin 27 is made of, for example, a steel plate with high elasticity and hardness rolled into a tubular shape, and when it is formed, by not butting both edges of the steel plate, a slit 28 with an appropriate width is formed.
is formed.

Regarding the relative relationship between the hollow roller 22 and the spring pin 27, the lengths of the hollow roller 22 and the spring pin 27 are equal to each other, but before the spring pin 27 is fitted into the shaft hole 23 of the hollow roller 22, the length of the hollow roller 22 and the spring pin 27 are the same. The diameter is larger than the inner diameter of the shaft hole 23, and when the spring pin 27 is compressed in the radial direction until the slit 28 disappears, the outer diameter of the pin is smaller than the inner diameter of the shaft hole 23 (the inner circumference of the shaft hole (to the extent that there is a gap between the surface and the outer circumferential surface of the spring pin).

Therefore, as shown in FIGS. 2 and 3, the hollow spring pin 27 is compressed in the radial direction and fitted into the shaft hole 23 of the hollow roller 22, and
When the spring pin 27 is restored in the radial direction, the outer peripheral surface of the spring pin 27 and the inner peripheral surface of the shaft hole 23 come into close contact with each other, and the slit 28 remains in the spring pin 27 within the shaft hole 23.

Note that the outer circumferential surface of the end of the spring pin 27 is preferably chamfered to facilitate fitting into the shaft hole 23.

In FIGS. 2 and 3, the pair of symmetrical coiled springs 12, 13 are the same as those described in FIGS. 4 and 5 above.

That is, both coiled springs 12, 13
are coil winding parts 14 and 15, locking parts 16 and 17 and extension parts 18 and 19 extending in opposite directions from both ends of these coil winding parts 14 and 15, respectively.
and bearing parts 20 and 21 which are bent inward from the ends of these extension parts 18 and 19 are integrally formed.

The pair of coiled springs 12 and 13 are
As is clear with reference to the figure and FIG. The hollow roller 22 has a spring pin 27 in its shaft hole 23, and a spring pin 27 has a spring pin 27 at both ends thereof.
21 is fitted and supported at both ends, and the locking portions 16, 17 of both coiled springs 12, 13
is held via the spring seat 5 of the groove-shaped member 1.

Thus, the hollow roller 22 in the present invention also has both coiled springs 1 as in the case of FIG.
It comes into pressure contact with the cam 11 under the elastic force of 2 and 13.

In the hinge equipped with a catch according to the present invention, the groove-shaped member 1 and the cup-shaped member 2 are respectively attached to the inner surface of the door opening frame 25 and the door 26, as shown in FIG. 26 is moved to open and close relative to the door opening frame 25. Furthermore, when the door 26 is closed, as described in FIG. acts to push one end of the arm 4 in the counterclockwise direction, so the closed state of the door is maintained.

``Effects of the Invention'' As explained above, the hinge with a catch according to the present invention has a catch structure in which a hollow spring pin having a slit is fitted into the shaft hole of the hollow roller, and both ends of the spring pin are attached to both ends. Since the bearing part of the coiled spring is fitted, the strength and durability of the hollow roller depends on the spring pin, the processability and cost reduction of the hollow roller, and the precision between the bearing part of the coiled spring and the spring pin. Useful and beneficial effects can be obtained, such as oil sump using the spring pin slit, and it can be expected to function lightly and smoothly as a hinge with a catch.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the hollow roller and spring pin in the hinge with a catch of the present invention, and Figure 2 is an exploded perspective view of the hollow roller, spring pin, and coiled spring in the hinge with a catch of the present invention. 3 is a sectional view taken along the - line in FIG. 2, FIG. 4 is a partially cutaway front view showing a hinge into which the catch of the present invention is incorporated together with a conventional catch, and FIG. 5 is a partially cutaway plan view. FIG. 2 is a cross-sectional plan view showing a conventional catch. DESCRIPTION OF SYMBOLS 1... Channel-shaped member, 1a... Connection end, 2... Cup-shaped member, 2b... Connection end, 3, 4... Arm, 5... Spring seat, 6-9... Axis pin, 10...
...Dead point, 11...Cam, 12, 13...
...Coil wound spring, 14, 15...Coil winding part, 16,17...Locking part, 18,19...Extending part, 20,21...Bearing part, 22...Hollow roller, 23...Shaft Hole, 24...Roller spindle, 27...
...Spring pin, 28...slit.

Claims (1)

[Scope of utility model registration request] A channel-shaped member, a cup-shaped member, and two arms, the two arms are disposed in parallel to each other across a connecting end of the channel-shaped member and a connecting end of the cup-shaped member, and the channel-shaped members , each connecting end of the cup-shaped member and each end of both arms are pivotally connected to each other via each axis pin, and among the two arms,
When the groove-shaped member and the cup-shaped member are bent, the arm located closer to the groove-shaped member is provided with a convex cam having a dead point at the end of the arm on the groove-shaped member side. A pair of coiled springs are integrally formed with a locking part and an extending part extending in opposite directions from both ends of the coiled part, and a bearing part bent inward from the end of the extending part, A hollow roller is supported via a roller support shaft that penetrates the coiled portion of each coiled spring and is installed in the longitudinally intermediate portion of the groove-shaped member, and has a shaft hole in the shaft center. ,
Both ends of the coil-wound springs fitted into both ends of the shaft hole are supported via bearing parts, and the locking parts of these coil-wound springs are
A hinge with a catch, which is held via the groove-shaped member and in which the hollow roller is pressed against the cam by receiving the elastic force of both coiled springs, includes a hollow spring pin having a slit along the axial direction. is compressed in the radial direction within the remaining range of the slit and is fitted into the shaft hole of the hollow roller, and the outer peripheral surface of these spring pins and the inner peripheral surface of the shaft hole are in close contact with each other. A hinge with a catch, characterized in that the bearing portions of both coiled springs are fitted into both ends of the spring pin.