JPH01235788A - Door device - Google Patents

Abstract

PURPOSE:To smoothly work opening doors, by fitting two 'L'-formed link arms rotatably, on two fulcrum shafts arranged on the pivot bases of fitting remote members, and by moving door plates pivoted at the tips of the link arms, linearly. CONSTITUTION:On the internal side surfaces of the opening sections of the upper side and lower side containing sections 15, 16 of a rack main-body 10, pivot bases 21 provided with two fulcrum shafts 22, 23 are respectively fitted, and via the shafts 22, 23, two 'L'-formed link arms 24, 25 are pivoted rotatably. At the tips of the arms 24, 25, door plates 17, 18 are respectively fitted via door fittings 8. When the doors 17, 18 are opened, then the tip of the arm 24 is projected longer than the tip of the arm 25, and the door plates 17, 18 are moved linearly in the direction inclined to the opening sections. Accordingly, the doors can be smoothly worked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a door device having a feature in a hinge portion.

(Traditional Kijutsu) As shown in Japanese Utility Model Application Publication No. 61-94167, two parallel wires of the same quality are attached to the upper and lower inner surfaces of the opening frame and the upper and lower end surfaces of the door plate, respectively. There is a door opening/closing device in which both ends of a link arm are rotatably attached to each other.

When using such a link arm, attach the base end of one link arm whose length is approximately half the opening width to the center of the opening width, and attach the base end of the other link arm to the opening frame. Must be installed at the end. Otherwise, the door plate inside the opening frame cannot be completely opened to the outside of the opening frame.

Then, the door plate is opened and closed in a semicircular trajectory whose radius is the length of each link plate.

(Problem to be solved by the invention) When the link arm is used in this way, the plate inevitably makes a semicircular movement, but this semicircular movement involves the movement of pulling the door plate toward you and shifting it sideways. It is a combination of movement and
This is a detour motion that involves more wasteful movement than a straight motion. In particular, door plates are generally opened and closed by using a hinge provided on the negative side as a fulcrum and pulling a handle provided on the other side. There is a sense of discomfort in the circular motion operation.

An object of the present invention is to provide a door device that uses a link arm as a hinge member of the door plate and can be operated linearly and smoothly when opening the door plate.

(Structure of the Invention) (Means for Solving the Problems) In the present invention, the base ends of two link arms 24 and 25 are rotatably pivoted on both sides facing each other at the opening of the attachment member 10. In the door device in which both sides of the door plate 17.18 are seen at the tips of the two link arms 24.25 provided on both sides, the mating member 10 is attached.
Two fulcrum shafts 22.23 are provided at an interval in the depth direction on the pivot base 21 attached to the pivot base 21, and two approximately L-shaped The base ends of link arms 24 and 25 are rotatably attached, and a door mount 28 is attached to the tips of these two link arms 24 and 25.
is pivoted, and the door plate 17.18 is attached via this door fixture 28.
is installed.

(Function) When the door plate 17.18 is opened, the door plate 17.18 is moved in a direction parallel to the opening surface by the depth of the base end with respect to the tips of the two L-shaped sink arms 24.25. The vector component to be moved is large, and moreover, the tip of the link arm 24 having the fulcrum shaft 22 on the front side protrudes more than the tip of the link arm 25 having the fulcrum shaft 23 on the back side when opening. Therefore, the door plates 17 and 18 move linearly in a diagonal direction with respect to the opening of the attachment member 10 and start the opening operation.

(Example) The present invention will be described in detail below with reference to a first embodiment shown in FIGS. 1 to 3 and a second embodiment shown in FIGS. 4 to 6.

First, a first practical example of the present invention shown in FIGS. 1 to 3 will be described.

FIG. 1 shows a rack used as a stand for a television receiver or the like. In this rack, a rack main body 10 as an attachment member is formed by a bottom plate 11, side plates 12 on both sides, a top plate 13, and a back plate. A shelf board 14 is provided in the middle of the rack body 10, and the inside of the rack body 10 is divided into an upper storage section 15 and a lower storage section 16. And upper storage part 1
5 and the opening of the lower storage section 16 have a door plate 17.
18 are provided respectively. This door plate 17, 18 has side plate portions 17a around it.

It is a rectangular dish-shaped transparent plate that is integrally molded with 18a. A handle 19 is provided on each of the door plates 17, 18.

This handle 19 is attached to the lower part of the upper door plate 17 and to the upper part of the lower door plate 18.

As shown in FIG. 1, both sides facing each other at the frontage of the upper storage part 15 provided in the rack body 10 as the mounting member and both sides facing each other at the opening of the lower storage part 16 are shown. A @dish base 21 is attached to the surface.

Each pivot base 21 is attached in the depth direction of the side plate 12 of the rack body 10, and two fulcrum shafts 22 and 23 are provided on this pivot base 21 with an interval in the depth direction. The base ends of two link arms 24.25 formed in a substantially rectangular shape are rotatably attached via a fulcrum @22°23, and a support shaft 26 is attached to the tips of these two link arms 24.25. A door fixture 28 is pivoted via the door fixture 27, and the side plate portion 17a of the door plate 17.18 is attached via the door fixture 28.
, 18a are installed. The above-mentioned link arms 24, 25 have their proximal ends close to each other and their distal ends sufficiently spaced apart, with a non-interference space 29 secured therebetween.

As shown in FIG. 2, the pivot base 21 has a plate member 31 directly fixed to the side plate 12 and a plate member 32 on the storage space side, which are connected to plate-shaped spacers 33, 34 and sleeve-shaped spacers 35. They are integrated by screws 36, 37, and 38. And one set of shaft mounting base 21
is fixed to the side plate 12 by four screws 39 inserted into the plate member 31.

A notch 41 is provided in the plate member 32, and this notch 4
The fulcrum shafts 22 on both sides facing each other through 1 are synchronized shafts 4
Connected by 2. As shown in Figure 1,
This tuning shaft 42 is fitted into a groove 43 formed in the plate 14.

Returning to FIG. 2, a protrusion 44 is integrally provided at the base end of the link arm 25, and this protrusion 44 and the plate member 3
Both ends of a torsion spring 46 are fitted into spring end fitting portions 45 provided at 1.

Then, there is a point of the protrusion 44 on the straight line connecting the fulcrum shaft 23 and the spring flJ fitting part i 45, and after this point, the direction of action of the repulsive force of the torsion spring 46 is reversed. And this torsion spring 46
Due to the repulsive force, for example, the upper link arm 25 in the state shown by the solid line in FIG. is energized to maintain the closed and open states of the door plate.

Furthermore, as shown in FIG. 2, the link arm 2
5, a linear portion 53 on the tip side is integrally formed with a linear portion 51 on the proximal side via a curved portion 52, and further, the tip portion 54 is slightly bent.

Further, the link arm 24 has a base end portion 55 that is slightly bent.
A linear portion 56 is integrally formed with the link arm 25, and a relief portion 58 for the link arm 25 is formed integrally with the link arm 25 through a bent portion 57, and five of its distal ends are slightly bent. Then, with the door plates 17 and 18 closed, the bent portion 57 of the other link arm 24 approaches the linear portion 51 of the - link arm 25, and the bent portion 57 of the other link arm 25
The linear portion 53 on the tip side of the link arm 24 and the relief portion 5 of the link arm 24
8, the two non-interference spaces are secured.

Furthermore, as shown in FIGS. 2 and 3, arm fitting grooves 61 and 62 are provided in the door fixture 28. The distal end portion 59 of the link arm 24 is fitted into one of the arm fitting grooves 61 and rotatably supported by the support shaft 26 . The tip portion 54 of the link arm 25 is fitted into the other arm fitting groove 62 and rotatably supported by the support shaft 27 . The arm fitting groove 62 is cut so as not to engage with the tip end 54 of the link arm 25. And, one door fixture 28 has 3
The side plate 17a of the door plate 17.18 is fixed by screws 63.
, 18a.

Next, the operation of this embodiment will be explained.

To open the upper door plate 17, grip the handle 19 at the bottom and pull it downward toward the front.

Support point at the base end of two L-shaped sink arms 24.25 @22
Since ゜23 is provided at a sufficient depth position relative to the door plate 17, the vector component that moves the door plate 17 downward is large, and the point ゜23 is placed at a position closer to the tip of the link arm 25 which has the fulcrum shaft 23 on the back side. The tip of the link arm 24 having the fulcrum shaft 22 on the side protrudes extra when opened. Therefore, the door plate 17 linearly moves diagonally downward and starts the opening operation. Force is stored in the torsion spring 46 until the blood plate 17 moves to the A1 position in FIG. but,
The link arm 25 is forcibly rotated counterclockwise by the repulsive force of the spring 4G, and the door plate 17 is lowered to the A2 position. When the door plate 11 reaches the A2 position, the link arm 24.25 is locked by the spacer 33.34,
Remains open. At this time, the link arms 24, 25 attached thereto are generally very close to each other, but since a non-interference space 29 is provided in advance, they do not interfere with each other.

To open the lower door plate 18, grasp the handle 19 at the top and pull it upward toward the front. This lower door plate 18 opens diagonally using the same principle as the upper door plate 17. It moves linearly upward and starts the opening operation. Then, the door plate 18, which has been opened to the B1 position where the torsion spring 46 is reversed, is raised to the B2 position by the force stored in the torsion spring 46, and at this B2 position, the link arm 24.25 is engaged by the spacer 33.34. be stopped.

In this way, the upper door plate 17 and the lower door plate 18
are opened and opened so that the back side of each does not turn over to the front side.

The link arms 24, 25 are formed in the shape shown in FIG. 2, so that even if they are installed flush as shown in FIG. They form a thin hinge mechanism that does not interfere with each other. However, the present invention provides link arm 24.2.
5 is not limited to the specific shape shown in FIG. For example, the link arm 2
By attaching 4 and link arm 25 with different gap dimensions, the two link arms do not interfere and only partially overlap, even if they do not have the shapes shown.

Next, a second embodiment of the present invention shown in FIGS. 4 to 6 will be described. Note that the same parts as those in the first embodiment shown in FIGS. 1 to 3 are given the same symbols and their explanations will be omitted.

As shown in FIG. 4, pivot bases 21 are attached to the inner surfaces of the side roots 12 on both sides of the rack body 10, which serves as an attachment member. The pivot base 21 is integrally formed from the upper side to the lower side of the shelf board 14. Two fulcrum shafts 2 are attached to the pivot base 21 with an interval in the depth direction.
2.23 is provided, and two link arms 24.2 formed in an approximately L shape are connected via these two fulcrum shafts 22.23.
5 is rotatably attached, and a door fixture 28 is pivotally attached to the tips of these two link arms 24.25 via a support shaft 26.27. Board 17
．． 1B is installed.

As shown in FIG. 5, the link arms 24.25 are provided at positions in the width direction where they do not interfere with each other by collars 71.72 of different lengths.
The two link arms 24, 25 are made to overlap as shown in the figure. In particular, during and in the opened state of the door plate 17, 18, the two link arms 24.
These two link arms 24 and 25 overlap to prevent fingers from entering between them, so that infants can
．． This prevents dangers such as inserting a finger between the 25 and 25.

As shown in FIG. 5, a shaft 73 is inserted into the collar 71.72 from the door fixture 28 side, and a screw 74 inserted from the link arm 24.25 side is screwed into this shaft 73, and the link The tips of the arms 24 and 25 are pivoted to the door handle N tool 28. Further, door plates 17, 18 are attached to the door fixture 28 so as to be adjustable in the vertical direction. That is, as shown in FIG.
A screw 76 inserted from the 7.18 side and a nut 77 fitted into the long groove 75 are screwed together. Therefore, if this screwing is loosened, the nut 77 will fit into the long groove 7 in the vertical direction.
The door plates 17, 18 can be adjusted vertically within the range of movement inside the door 5.

In addition, as shown in FIG. 4, the upper link arm 2
5, the recess 81 located at the shortest distance 1111L1 from the center of the fulcrum shaft 23 is sandwiched between the recess 81
A cam surface 82 having a shape whose diameter increases rapidly from the concave portion 81, a cam surface 83 whose diameter gradually increases from the recess 81, and a convex surface 84 located at the tip of the cam surface 83 are formed. Also,
A fulcrum shaft 2 is attached to the outer peripheral surface of the base end of the lower link arm 25.
A cam surface 86 having a larger diameter from the recess 85, a cam surface 81 having a smaller diameter from the recess 85, and a distal end of the cam surface 87 across a recess 85 located at a distance from the center of the recess 85. A concave surface 88 is formed.

Further, as shown in FIG. 4, eight stoppers are provided near the fulcrum shaft 22 to lock the upper and lower link arms 24 together.

Further, spring m1 portions 91 are provided at the upper and lower portions of the pivot base 21, and a compression coil spring 92 is fitted into the fitting portion 91. A root 93 that receives one end of this spring 92 is integrally provided at the tip of a spring force adjusting screw 94, and this WA node screw 94 is screwed into a nut 95 fixed to the base 21. A roller shaft support plate 9G is brought into contact with the other end of the spring 92, and a roller 97 is rotatably supported on this shaft support plate 96. The roller support shaft 9 penetrated by this roller 97
One end of 8 is fitted into a long hole 99 provided in the pivot base 21 . This elongated hole 99 is formed straight toward the fulcrum 1i+123, and the row 597 is 3! Guide you freely.

The O-ra 91 is pressed against the peripheral surface of the base end of the link arm 25 by the biasing force of the spring 92.

In addition, a relatively large square tube part 1 that is fitted into the negative side plate 12 is provided at the upper and lower parts of the shaft mounting base 21, and a comparatively large square tube part 101 that protrudes to the opposite side (inside) from the square tube part 101 is provided. A small square tube part 102 is integrally formed with the large square tube part 101, and a square bushing plate 103 is formed on the large square tube part 101.
is fitted to be slidable in the thickness direction of the side root 12, and a corner shaft portion 105 of an arm locking body 104 having the shape shown in FIG. 6 is integrally screwed to this bushing plate 103. A shaft portion 105 is fitted into the square tube portion 102 of the front handle so as to be freely openable. An arm locking convex portion 106 is provided at the tip of this arm locking body 104 . As shown in FIG. 6, an arm sliding slope 107 is formed on the right side of this arm locking protrusion 106, and an arm locking protrusion 1 is formed on the left side.
08 is provided. A compression coil spring 109 is fitted inside the large rectangular cylindrical portion 101, one end of this spring 109 is brought into contact with the bushing plate 103, and the other end is locked by the bearing base 21. Therefore, the bushing plate 103 is biased outward, and the distal end of the integral arm locking body 104 also
is elastically biased toward the inner surface of the

Next, the operation of the second embodiment shown in FIGS. 4 to 6 will be explained.

In the state shown in FIG. 4, the rotation of the link arm 25 is locked by the arm locking body 104, and the closed state of the door plate 17 or the door plate 18 is maintained. When the bushing plate 103 is pressed from the outside, this arm locking body 1
The arm locking protrusion 106 of 04 is removed from the link arm 25.

Then, in the case of the upper door plate 17, the spring 92
The force stored in the link arm 25 is transferred via the roller 97 to the link arm 25
The upper link arm 25
is forcibly rotated clockwise, and the door plate 17 is opened. The pressing force of the spring 92 is applied to the recess 8 between the cam surfaces 82 and 83.
1 rotates to a position facing the roller 97. The advantage is that the door plate 17 is lowered by its own weight, and the link arm 25 is rotated clockwise.

At this time, the cam surface 83 comes into contact with the roller 97, and this cam surface 83 acts in the direction of compressing the spring 92, but the downward force of the door plate 17's own weight slightly exceeds the repulsive force of the spring 92. The door plate 17 slowly descends. and,
When the convex surface 84 of the link arm 25 approaches the angle at which it faces the roller 97 (the angle at which the door plate 17 is fully opened), the compressive force of the spring 92 and the weight of the door plate 11 are balanced, and the door plate 17 descends smoothly. Stop. At this time, the link arm 24 is locked by the stopper 89.

In addition, in the case of the lower door plate 18, the arm locking body 10
4 is released from the lower link arm 25, the force stored in the spring 92 pushes up the cam surface 86 of the link arm 25 via the roller 97, and the lower link arm 2
5 is forcibly rotated counterclockwise, and the egg plate 18 is opened upward. The pressing force of the spring 92 is the cam surface 86.87
The recess 85 in between rotates to a position facing the roller 97. After that, the door plate 18 is lifted by hand. At this time, the force of the spring 92 acts on the cam surface 81,
Since this becomes a force that urges the lower link arm 25 in the counterclockwise direction, the door plate 18 can be lifted lightly. When the lower door plate 18 is fully opened, the link arm 24 is stopped by the stopper 89, and the roller 97 is fitted into the concave surface 88 of the link arm 25, so that the door plate 18 is not raised. Retained.

When closing the door plates 17, 18, they are manually forced back into the closed position. At this time, the upper and lower link arms 25 hit the arm sliding slope 107 formed on the arm locking protrusion 106 of the arm locking body 104, and the arm locking protrusion 10 (3) resists the spring 109.
escapes in the direction away from the side plate 12, and the link arm 25
When the spring 10 passes through the arm locking protrusion 106, the spring 10
The arm locking convex portion 106 returns to the side plate 12 side by the restoring force of 9, and the link arm 25 is locked by the arm locking protrusion 108, and the closed state of the door plates 17 and 18 is maintained.

Note that instead of this arm locking body 104, door plates 17, 1
8 may each be provided with a magnetic catch.

〔Effect of the invention〕

According to the present invention, two fulcrum shafts are provided at a distance in the depth direction on the pivot base attached to the mounting partner member,
The base ends of two almost L-shaped link arms are rotatably attached via these two fulcrum shafts, and a 1M door fixture is attached to the tips of these two link arms. Since the door plate is attached via the fixture, the door plate can be opened linearly and smoothly while using the link arm as the hinge member of the door plate.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing a first embodiment of the door device of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a front view thereof, and FIG. 4 is a door device of the present invention. FIG. 5 is a front view of the - side portion thereof, and FIG. 6 is a plan view of the arm locking body. 10...Rack body as mounting partner member, 11゜18
...Door plate, 21.@Dish base, 22.23.Fully shaft, 24.25.Link arm, 28.Door mount.

Claims (1)

[Claims] (1) The base ends of two link arms are rotatably attached to both opposing sides of the opening of the mounting member,
In a door device in which both sides of a door plate are pivoted to the ends of two link arms provided on both sides, two link arms are attached to a pivot base attached to a mounting member with a distance in the depth direction. A fulcrum shaft is provided, and the base ends of two approximately L-shaped link arms are rotatably attached via these two fulcrum shafts, and a door mount is attached to the tips of these two link arms. A door device characterized in that a door plate is attached to the door plate via the door fitting.