JP2001248355A - Door opening/closing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the energizing force of a door movement promptly and easily by simple operation from an opening side even in the case of a specification change in the size or material, etc., of the door. SOLUTION: A first mounting member 4 mounted on the inner wall of a storage chamber S and a second mounting member 5 mounted on the back side of the door 1 closing the opening of the storage chamber S are connected through a link mechanism B, and an energizing mechanism C energizing and holding the door 1 on a close position and an open position alternatively, by elastic force, with the oscillations of an oscillating link 6 is provided between the oscillating link 6 forming the link mechanism B and the first mounting member 4. An adjustment operating means D for adjusting the elastic energizing force of the energizing mechanism C is provided so as to be adjusted from the opening side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for fittings such as sink cabinets and hanging cabinets or furniture such as cupboards, bookcases, and shoe boxes, and more particularly, to an inner wall of a storage room. A link mechanism that swings and guides the door body between the closed position and the open position, with the first mounting member mounted on the door and the second mounting member mounted on the back surface of the door that closes the opening of the storage chamber. Between the swinging link and the first mounting member constituting the link mechanism, the door body is selectively moved between a closed position and an open position in accordance with the swinging of the swinging link. The present invention relates to a door opening / closing device provided with an urging mechanism for urging and holding the door.

[0002]

2. Description of the Related Art In a conventional door opening / closing device, as shown in FIG. 8, one of a pair of swing links 6 and 7 constituting a link mechanism B is directed to the outside of the opening when the door 1 is opened. Of the base end of the first swing link 6 formed in an L-shape and the first mounting member 4 attached to the inner wall of the storage chamber S, the depth of the storage chamber S is large. At each of the one end located on the side, the mounting pins 50 and 51 parallel to the pivot axis of the first pivot link 6 are fixed, and the urging mechanism C is extended across both the mounting pins 50 and 51. The hook portions 52a, 52b formed by bending at both ends of the tension coil spring 52 constituting the above structure are hooked.

[0003]

In the conventional door opening / closing device, if the specifications such as the size and the material of the door 1 are slightly different, the function of holding the door 1 in the closed position or the open position is deteriorated. Alternatively, since the holding function of the door body at the closed position or the open position becomes unnecessarily strong and the opening / closing operation becomes heavy, there is a problem that the opening / closing operation becomes heavy. Moreover, since it is necessary to prepare various types of tension coil springs 52 having different spring characteristics, it takes time to respond to the specification change, and the production cost tends to increase.

[0004] The present invention has been made in view of the above situation, and its main problem is that even if there is a change in specifications such as the size and material of the door body, the simple operation from the opening side can be performed. In order to provide a useful door opening / closing device capable of quickly and easily adjusting the movement urging force of the door, and opening and closing the door at a moving speed according to a user's request. is there.

[0005]

According to a first aspect of the present invention, there is provided a door opening / closing apparatus comprising: a first mounting member mounted on an inner wall of a storage chamber; and a door for closing an opening of the storage chamber. A second attachment member attached to the back surface is connected via a link mechanism that swings and guides the door body between a closed position and an open position, and the swing link and the first attachment member that constitute the link mechanism are connected. Between the closed position and the open position in accordance with the swing of the swing link, there is provided a biasing mechanism for biasing and holding the door body with an elastic force. Adjusting operation means for adjusting the elastic urging force,
The point is that it is provided so as to be adjustable from the opening side.

According to the above-mentioned characteristic configuration, even if the specifications such as the size and material of the door body are slightly different, the elastic urging force of the urging mechanism can be adjusted by the adjusting operation means. And the function of holding the door body at the closed position or the open position can be suppressed from becoming unnecessarily strong, and a spring like the conventional door body opening and closing device can be suppressed. There is no need to prepare various types of tension coil springs having different characteristics. In addition, the adjusting operation means can be easily adjusted through a wide space on the opening side.

Therefore, even if the specifications such as the size and the material of the door body are changed, the operation of adjusting the urging force of the door body can be quickly and easily performed with a simple operation of adjusting the adjusting operation means from the opening side. In addition, the door can be easily opened and closed at a moving speed according to a user's request.

According to a second aspect of the present invention, the door opening / closing device is characterized in that the biasing mechanism is pivotally attached to a first receiving member pivotally attached to a base end of the swing link and to a first mounting member. A second receiving member, and a tension coil spring attached to both of the receiving members. Each of the two end portions of the tension coil spring has a mounting portion for each receiving member. The point is that the screw member is screwed and fixed from the coil axis direction.

[0009] According to the above-mentioned characteristic configuration, since the fixing member is attached to each receiving member via the screw member screwed to the both ends of the tension coil spring, the both ends of the tension coil spring and each receiving member are firmly attached. However, no special processing is required for the tension coil spring, and the screw member only needs to be screwed in from the coil axis direction, thereby reducing manufacturing costs and facilitating manufacturing. Can be.

[0010] The door opening and closing device according to a third aspect of the present invention is characterized in that the adjusting operation means is a screw shaft screwed to one of the screw members through the mounting portion of the first receiving member from the opening side, In addition to the lock nut screwed to the screw shaft, the rotation operating portion of the screw shaft is configured to face the opening.

According to the above feature, the elastic biasing force of the tension coil spring can be adjusted only by rotating the rotary operating portion of the screw shaft facing the opening.
Such adjustment work can be performed efficiently and easily.

According to a fourth aspect of the present invention, there is provided a door opening and closing device, wherein the screw member bites into an end of the tension coil spring when the screw member is screwed into the tension coil spring for a predetermined length. The point is that a part is formed.

According to the above feature, when the screw member is screwed into the tension coil spring for a predetermined length, the biting portion of the screw member bites into the end of the tension coil spring from the coil axis direction. The tension coil spring and the screw member can be firmly connected without relative rotation.

According to a fifth aspect of the present invention, there is provided a door opening / closing device, wherein the swing link has a mounting portion for connecting to another swing link opposed in the opening width direction via a connection shaft. In that it is formed.

According to the above-mentioned feature, the movements of the two swinging links opposing each other in the opening width direction are integrated, so that the displacement of the swinging movements of the two link mechanisms is reduced, and the door body is smoothly opened and closed. Can be done.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIGS.
Fittings or cupboards such as sink cabinets and hanging cupboards,
1 shows an opening / closing device for a door 1 mounted on furniture such as a bookcase or a clog box; A substantially L-shaped first attachment member 4 fixed to the inner wall surface (inner wall portion) of the opposing side plate (or vertical frame) 2 with a plurality of screws 3
And a second mounting member 5 fixed to the rear surface of the door body 1 with a plurality of screws 3, a closed position for closing the opening of the storage chamber S, and an open position moved to the outer side on the upper side of the opening. And a link mechanism B that swings and guides the door body 1 while maintaining the door body 1 in a parallel or almost parallel posture.
Among the pair of swing links 6 and 7 constituting the link mechanism B, a first swing link between the substantially L-shaped first swing link 6 located on the upper side and the first mounting member 4 is provided. An urging mechanism C is provided for selectively urging and holding the door body 1 with the elastic force between the closed position and the open position in accordance with the swing of the moving link 6, and further, the elastic urging force by the urging mechanism C is provided. Is provided so as to be operable from the opening side.

As described above, when the door 1 is moved between the closed position and the open position while maintaining the door 1 in a parallel or substantially parallel posture, the door 1 projects forward during the opening / closing operation. The moving margin is reduced, and the opening and closing of the door 1 can be advantageously performed in terms of space and handling, and at the time of the opening operation, the entire door 1 retreats to the outer side of the opening. A large area can be taken.

The base end of the first swing link 6 is shown in FIGS.
As shown in FIG. 3, the first attachment member 4 is pivotally attached to a bent portion of the first attachment member 4 via a first connection pin 8 </ b> A around a horizontal axis (oscillation axis) extending in the left-right direction. The distal end portion of the first swing link 6 is formed by bending upper and lower mounting plate portions 6a and 6b on one side of the second mounting member 5.
It is pivotally attached to the upper first mounting plate 6a via a second connecting pin 8B so as to be rotatable around a horizontal axis along the left-right direction.

The base end of the second swing link 7 is shown in FIGS.
As shown in FIG. 3, the first mounting member 4 is pivotally attached to the lower end of the first mounting member 4 via a third connecting pin 8C so as to be rotatable around a horizontal axis (swing axis) extending in the left-right direction. The distal end of the second swing link 7 is pivotally attached to the second mounting plate 6b below the second mounting member 5 via a fourth connecting pin 8D so as to be rotatable around a horizontal axis along the left-right direction. Have been.

When the door 1 is opened from the closed position to the open position, the first swing link 6 and the second swing link 7 do not interfere with each other. The distal end portion including the portion overlapping with the second swing link 7 is located at a portion deviated from the swing path of the second swing link 7 in the plate thickness direction (the swing axis center direction) with respect to the base end portion. And the tip of the first swing link 6 is
On the inner surface side of the first mounting plate portion 6a of the mounting member 5, and
The tip of the second swing link 7 is pivotally attached to the outer surface of the second mounting plate 6b of the second mounting member 5, respectively.

As shown in FIGS. 3 to 6, the urging mechanism C includes a substantially L-shaped first receiving member 10 pivotally attached to a base end of the first swing link 6, and a first mounting member. A substantially L-shaped second receiving member 11 pivotally attached to the member 4, and both receiving members 1
The extension coil spring 12 is attached to the receiving members 10 and 11 at both ends of the extension coil spring 12. A screw member 13 having a screw hole 13a is screwed and fixed from the coil axis direction.

As shown in FIGS. 1 and 2, when the door 1 is at the open position, the first receiving member 10 is located at the center of the mounting position of the second receiving member 11 and at the first swing link 6 side. The door 1 is biased and held at the open position by the elastic restoring force of the extension coil spring 12 and is located above the line segment X connecting the center position of the 1 connecting pin 8A. When in the closed position, the tension coil is located below the line X connecting the center position of attachment of the second receiving member 11 and the center position of the first connection pin 8A on the first swing link 6 side. The door 1 is biased and held at the closed position by the elastic restoring force of the spring 12.

The distance between the receiving members 10 and 11 in the coil axis direction is larger when the door 1 is in the closed position than when the door 1 is in the open position. It is configured so that the door body 1 can be strongly held in the closed posture while easily performing the closing operation of the door body 1 at the open position with a small amount of labor. Therefore, the amount of downward displacement of the first receiving member 10 with respect to the line X when the door 1 is in the closed position is equal to the amount of the first receiving with respect to the line X when the door 1 is in the open position. Member 1
0 is configured to be smaller than the amount of upward deviation of the door body 1 so that the door body 1 in the closed position is slightly opened, and an upward elastic biasing force is applied to the door body 1. It is.

As shown in FIGS. 5 and 6, the first receiving member 10 is provided around a shaft center parallel to the swing shaft center via a connecting pin 14A with respect to the base end of the first swing link 6. The first receiving member 10 has a mounting hole 10a through which an adjusting screw shaft 16 constituting the adjusting means D is inserted.
Is formed, and the second receiving member 11 is
The first mounting member 4 is rotatably connected to the first mounting member 4 via a connecting pin 14B around an axis parallel to the swing axis, and a fixing screw shaft 18 is inserted through the second receiving member 11. A mounting hole 11a is formed.

As shown in FIG. 4, the maximum outer diameter of the screw member 13 is intermediate between the coil inner diameter and the coil outer diameter of the extension coil spring 12, and is formed at one end thereof. A spiral groove 13b into which a coil wire can enter at a pitch equal to the coil pitch at the time of no load, and an annular groove 13c communicating with the end of the spiral groove 13b are formed on the outer peripheral surface excluding the formed flange portion 13A. At the same time, an operation groove 13d for screwing the screw member 13 with tools such as a screwdriver is formed on an end face of the flange portion 13A.

When the screw member 13 is screwed into the tension coil spring 12 by a predetermined length with the annular inclined portion facing the annular groove 13c of the flange portion 13A, the bite bites into the end of the tension coil spring 12. A recess 13e is formed. By this biting portion 13e, the tension coil spring 1
2 and the screw member 13 can be firmly connected without relative rotation.

As shown in FIGS. 1 and 2, the adjusting operation means D is provided with a mounting hole 10 of the first receiving member 10 from the opening side.
a, and an adjustment screw shaft 16 screwed into the screw hole 13a of one of the screw members 13 through the first screw member 13 and a lock nut 17 screwed into the adjustment screw shaft 16. The first receiving member 10 is configured to be clamped and fixed between a rotation operation portion 16a formed on one end side of the lock nut 17 and a rotation operation portion (head) of the adjusting screw shaft 16. 16a is configured to face the opening.

When the door 1 is opened to the open position, the rotary operation portion 16a of the adjusting screw shaft 16 faces the opening side.
a can be easily rotated from the front, and the work of adjusting the elastic biasing force by the tension coil spring 12 can be performed efficiently and easily.

The mounting hole 1 of the second receiving member 11
By tightening the fixing screw shaft 18 screwed into the screw hole 13a of the other screw member 13 through 1a,
The other end of the extension coil spring 12 can be fastened and fixed to the second receiving member 11 in a state where it cannot be relatively rotated.

The space between the second receiving member 11 and the screw member 13, the space between the second receiving member 11 and the rotation operating portion (head) 18 a of the fixing screw shaft 18, and the position of the adjusting screw shaft 16. A washer 19 made of a synthetic resin is interposed between the rotation operation part 16a and the first receiving member 10, respectively.

As shown in FIG. 7, the distal end of the first swing link 6 is detachably connected to another first swing link 6 opposed to each other in the opening width direction via a connection shaft 21. A screw hole 21a into which a screw 23 inserted into the mounting hole 22 is screwed is connected to the connecting shaft 21. A screw hole 21b for a lock bolt 24 for preventing the screw 23 from loosening by being pressed against the screw 23 from the radial direction is formed.

In this embodiment, the first mounting member 4, the second mounting member 5, the oscillating links 6 and 7, which constitute the link mechanism B, and the urging mechanism C having the tension coil spring 12,
Further, an adjusting operation means D for adjusting the elastic urging force by the urging mechanism C is unitized, and the two sets of door opening / closing units are attached to the side plate 2 and the door 1 of the door mounting frame A. ing.

After the two door opening / closing units are attached to the side plate 2 and the door 1 of the door mounting frame A, the first swing links 6 of both door opening / closing units are connected via the connecting shaft 21. connect.

[Other Embodiments] (1) In the first embodiment described above, the second receiving member 1
The other end of the tension coil spring 12 is tightened and fixed to the second receiving member 11 by the tightening operation of the fixing screw shaft 18 screwed into the screw hole 13 a of the other screw member 13 through the first screw member 13. However, in the case where the relative rotation restricting means for restricting the relative rotation between the other end portion of the tension coil spring 12 and the second receiving member 11 is provided, the screw shaft 18 used for fixing is provided. The elastic biasing force of the tension coil spring 12 may be configured to be able to be supplementarily adjusted by utilizing the tension spring. In other words, auxiliary adjusting means for adjusting the elastic biasing force of the tension coil spring 12 may be provided between the other end of the tension coil spring 12 and the second receiving member 11.

(2) As the adjusting operation means D, any structure may be used as long as the elastic urging force of the urging mechanism can be adjusted from the opening side. .

(3) Biting portion 13 of screw member 13
As e, any structure can be adopted as long as it can bite into the end of the tension coil spring 12 when the screw member 13 is screwed into the tension coil spring 12 for a predetermined length. Is also good.

[0037]

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a first embodiment of the present invention when a door body is closed.

FIG. 2 is a partially cutaway side view when the door is opened.

FIG. 3 is an exploded perspective view of a main part.

FIG. 4 is an enlarged view of a main part of an urging mechanism and an adjusting operation means.

FIG. 5 is a sectional view of a main part before adjusting the urging force of the urging mechanism.

FIG. 6 is a cross-sectional view of a main part after adjusting the urging force of the urging mechanism.

FIG. 7 is an enlarged sectional view of a mounting portion between the first swing link and the connection shaft.

FIG. 8 is a partially cutaway side view of the conventional door opening / closing device when the door is closed.

[Explanation of symbols]

 B Link mechanism C Biasing mechanism D Adjustment operation means S Storage room 1 Door 4 First mounting member 5 Second mounting member 6 First swing link 7 Second swing link 10 First receiving member 10a Mounting hole 11 Second Receiving member 12 Tension coil spring 13 Screw member 13e Biting portion 16 Screw shaft 16a Rotating operation portion 17 Lock nut 21 Connecting shaft

Claims (5)

[Claims] 1. A first mounting member mounted on an inner wall of a storage room and a second mounting member mounted on a back surface of a door closing an opening of the storage room over a closed position and an open position. The door is connected via a link mechanism that swings and guides the door body, and a swing link that constitutes the link mechanism is connected to the first link.
A door body opening / closing device provided with a biasing mechanism between a mounting member and a biasing mechanism for selectively biasing and holding the door body between a closed position and an open position with an elastic force in accordance with the swing of the swing link. A door opening / closing device, wherein an adjusting operation means for adjusting an elastic urging force by the urging mechanism is provided so as to be adjustable from the opening side. 2. The device according to claim 1, wherein the urging mechanism includes a first receiving member pivotally attached to a base end of the swing link, a second receiving member pivotally attached to the first mounting member, and both receiving members. And a screw member provided with a mounting portion for mounting to each receiving member at each of both ends of the tension coil spring. The door opening / closing device according to claim 1, wherein the door opening / closing device is provided. 3. The method according to claim 1, wherein the adjusting operation means is a first operation means from an opening side.
A screw shaft screwed into one of the screw members through the mounting portion of the receiving member, and a lock nut screwed into the screw shaft, and the rotation operation portion of the screw shaft faces the opening. 3. The door opening / closing device according to claim 2, wherein the door opening / closing device is configured as follows. 4. The screw member has a biting portion which bites into an end of the tension coil spring when the screw member is screwed into the tension coil spring for a predetermined length.
The door body opening and closing device according to the above. 5. The swing link according to claim 1, further comprising a mounting portion for connecting to another swing link opposed in the opening width direction via a connection shaft. The door opening / closing device according to the paragraph.