JP2003193729A - Intermediate position locking mechanism of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intermediate position locking mechanism of a door capable of being easily operated and preventing a part of the door from being caught between the door and the peripheral edge of an opening part closed by the door. <P>SOLUTION: This intermediate position locking mechanism can lock a vertically rotatable semi-lift door 20 in an intermediate position between a full open position and a full close position. The mechanism comprises a stay 54 having one end 54a fitted to the door 20 and the other end 54b positioned on the door rotating center side of one end 54a and pivotally supported on a soundproof box body 10 at a fixed position, a guide member for detachably connecting one end 54a of the stay 54 to the door, and an energizing means 60 for gas cylinder and others for energizing the door in opening direction against the weight of the door 20 when at least the door 20 is positioned at the intermediate position. The guide member 51 comprises a guide groove 52 for guiding one end 54a of the stay 54. The stay end 54a restricts the movement length of the door in the direction of the rotating center P by the end part 52a of the guide groove 52 so that the rotation of the door 20 in opening direction can be locked at the intermediate position. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door intermediate position locking mechanism capable of locking a door at an intermediate position between a fully closed position and a fully opened position, and more particularly, to an upper end portion. The present invention relates to a door intermediate position locking mechanism used for a so-called "bounce-up door" that is rotatably locked and is vertically rotatable.

[0002]

2. Description of the Related Art Rotating doors provided in soundproof boxes of various working machines, vehicles, buildings, etc. are not only fully opened or closed, but also opened at a predetermined intermediate position. There is one that is provided with a door intermediate position locking mechanism that can lock the door at a certain degree.

As an example of such a locking mechanism, FIG.
The locking mechanism shown in FIG. 2 locks the door 20 horizontally rotatably attached to an opening of a case of a device or the like via a hinge or the like at an intermediate position between the fully open position and the fully closed position. A guide metal fitting 51 'having a guide groove 52 formed in the length direction with the depth direction of the case as the length direction.
Mount in the opening of the case, and round arm 54 '
One end of the door is slidably fitted in the guide groove 52 of the guide fitting 51 ′ and the other end is rotatably connected to the door 20, and the door 20 is opened when the door 20 is opened to an intermediate position. One end of the arm 54 'pulled out in accordance with the above is locked to the end portion of the guide groove 52, the movement in the opening direction is restricted, the door 20 is locked at the intermediate position, and at the intermediate position. One end of the arm 54 'is fitted into the notch formed in the groove 52 by its own weight so that the door 20 is maintained open at a predetermined opening in the intermediate position (actual opening 62). No. 182363).

Further, as a locking mechanism of an automobile back door 20 'whose upper end is hinged to a vehicle body, as shown in FIGS. 12 and 13, a belt member 91 having one end connected to the back door 20', A retractor 92 configured to be able to store the belt member 91 is provided on the vehicle body, and when the back door 20 'is opened in a substantially horizontal state at a hinge coupling position with the vehicle body, the back door 20' is opened. There is a stopper 90 for holding the posture via 91, and there is a structure in which the back door 20 'can be opened further upward by releasing the stopper 90 (actual opening 6).
No. 3-4722).

[0005]

Among the above-mentioned door intermediate position locking mechanisms, the locking mechanism disclosed in Japanese Utility Model Laid-Open No. 62-182363 discloses an arm 54 locked in the guide groove 52. By extracting the other end of the'from the guide groove 52,
The door 20 is not restricted by the length of the arm 54 '.
However, since the arm 54 'pulled out from the guide groove 52 has its other end pivotally supported by the door 20, the arm 54' is in a state in which one end is removed from the guide fitting 51 '. When the door 20 is opened / closed with, the arm 54 ′ may rotate to hit the door 20 to generate noise or damage the door 20, and when the door 20 is closed, the arm 54 ′ is provided between the door 20 and the peripheral edge of the case. 54 'sandwiches the arm 5
4 ′ may be deformed or the door 20 may be damaged.

In the intermediate position locking mechanism disclosed in Japanese Utility Model Laid-Open No. 63-4722, a retractor 92 for winding the belt member 91 is provided so that the belt member 91 does not become loose when the back door 20 'is closed. However, the structure is complicated and expensive.

Further, the stopper 90 for locking the back door 20 'at an intermediate position is constituted by, for example, an opening 93 provided in the vehicle body and a stopper ring 94 locked at the opening 93. By stopping the stopper ring 94 at a predetermined position of the belt member 91 inserted through the inside, the belt member 9 pulled out by a predetermined length.
1 is locked at the opening 93, and the rotation of the back door 20 'can be locked at the intermediate position. Then, in order to open the back door 20 'from the intermediate position to the fully open position, the opening 93 is configured to be expandable to a size that allows the stopper ring 94 to pass therethrough. By pulling out the ring 94, the back door 20 'can be fully opened.

As described above, in the door intermediate position locking mechanism disclosed in Japanese Utility Model Laid-Open No. 63-4722, the back door 2 is used.
Not only the operation of the stopper 90 is required every time 0 ′ is fully opened, the work is complicated, but when the stopper 90 having the configuration shown in FIGS. 12 and 13 is used, the back door 2
When closing 0 ′, it is necessary to open the opening 93 and push the stopper ring 94 into the opening 93. This operation is not only complicated, but if the operation of the stopper 90 is neglected, Stopper ring 9 pulled out from 93
4 may be locked in the opening 93, and the belt member 91 may not be wound up by the retractor 92, and the belt member 91 may loosen and hang down and be caught between the back door 20 'and the rear end portion. In this way, the belt member 9
If 1 is sandwiched, there is a problem that the back door 20 'cannot be closed or the belt member 91 is damaged.

Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks of the prior art. The door is locked at an intermediate position of a predetermined angle between the fully closed position and the fully opened position, and the fully opened position is obtained. The door can be easily rotated between the positions, the intermediate position and the fully closed position, and even when the door is closed from the fully opened state without any special work or operation, the locking mechanism can be used. An object of the present invention is to provide an intermediate locking mechanism for a door that does not cause an accident such as a part of constituent members being sandwiched between a door and a peripheral edge of an opening closed by the door.

[0010]

In order to achieve the above object, the door intermediate position locking mechanism of the present invention has a hinge 40 having an upper end on a structure having an opening, such as a soundproof box body 10. A door 20 which is rotatably supported via the like and pivots in the vertical direction to open and close the opening, and which locks the door 20 at an intermediate position between the fully closed position and the fully open position of the door 20. In the intermediate position locking mechanism, the one end 54a is connected to the door 20, and the other end 54b is connected to the door 2 with respect to the door 2
It is rotatably connected to a fixed position on the structure on the side of the rotation center P of 0, and the one end 54a is inward in the rotation direction of the door 20 in accordance with the opening operation of the door 20. A stay 54 arranged so as to move relative to each other, a guide member 51 connecting the end 54a of the stay 54 to the door 20 in a detachable and relatively movable state, and the door at least at the intermediate position The guide member 51 is provided with an urging means 60 such as a gas cylinder for urging the 20 in the opening direction against the weight thereof.
The guide groove 52 is provided to guide the relative movement of the stay one end 54a by fitting the a into the stay 54 when the door 20 is opened to the intermediate position.
Is provided with a locking portion that stops relative movement of one end 54a of the one end 54a toward the inner peripheral side in the rotation direction of the door 20, for example, one end 52a of the guide groove 52 (claim 1).

The other end 54b of the stay 54 is preferably disposed on the structure (soundproof box body 10) side above the one end 54a of the stay 54 in the vertical direction (claim 2).

The locking portion may be an end portion (one end 52a) of the guide groove 52 on the inner circumferential side of the door 20 in the rotating direction (claim 3).

The guide member 51 can be provided with a withdrawal hole 56 that widens the groove width of the guide groove 52 at the end 52a on the inner circumferential side of the door 20 in the direction of rotation, and through the withdrawal hole 56. One end 54a of the stay 54 fitted in the guide groove 52 may be configured to be removable (claim 4).

The guide groove 52 of the guide member 51
The protrusion 521 that locks the one end 54a of the stay 54 that relatively moves at any position between both ends 52a and 52b in the lengthwise direction is formed as the above-mentioned locking portion, and the formation position of the protrusion 521 is formed. At stay 5
The groove width may allow the one end 54a of No. 4 to pass (claim 5).

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the door intermediate position locking mechanism according to the present invention has a so-called "bounce-up" which is pivotally mounted at its upper end by a hinge 40 or the like and which is pivoted vertically to open and close. It is used for locking the door 20 of "formula" at a predetermined position between the fully closed position and the fully open position (herein referred to as "intermediate position"), and in the present embodiment, An example in which such a flip-up type door is applied to the door 20 of the soundproof box body 10 that houses a working machine such as a compressor or a generator is shown as a structure having an opening.

However, the door locking mechanism of the present invention is not limited to the case where it is used for the door 20 of such a soundproof box 1. For example, a rear door of a hatchback type automobile, a house, a building, The present invention can be applied to a flip-up door provided at windows and doorways of other buildings, and any other flip-up door.

[Overall Structure of Soundproof Box] FIG. 1 shows an example of a soundproof box 1 having the flip-up type door 20 described above. In FIG. 1, the door intermediate position locking mechanism is omitted for convenience of description. There is.

This soundproof box 1 forms the bottom surface of the soundproof box 1,
For example, the frame 1 formed in a substantially rectangular shape in plan view
2, side plates 13a and 13b, which are erected on the peripheral edges of the frame 12, which face each other, and the side plate 13 (13
a, 13b) a soundproof box body 10 including a top plate 14 bridging the upper ends of the side plates 13 (13a, 1b).
3b) and the top plate 14 are attached to the open peripheral edge of the top plate 14 not connected with each other via a hinge 40, and together with the frame 12, the side plates 13 (13a, 13b) and the top plate 14, the engine and the Two doors 20, 20 defining a space for accommodating a working machine driven by an engine
Is rotatably attached to the soundproof box body 10 at symmetrical positions to form the soundproof box 1.

In the present embodiment, the above-mentioned frame 12 has a substantially rectangular shape in plan view, and the two side plates 13a, 13 are defined by the two short sides 12a, 12b of the frame.
b is erected. The side plates 13a and 13b are shown in FIG.
~ In the embodiment shown in Fig. 4, it is formed in a trapezoidal shape,
The bottom side has substantially the same length as the short side of the frame 12, and the top side is formed shorter than the short sides 12a and 12b of the frame 12.

Between the upper sides of the side plates 13a and 13b, there is a width substantially equal to the length of the upper sides of the side plates 13a and 13b.
A rectangular top plate 14 having a length substantially equal to the distance between the side plates 13a and 13b is bridged. A soundproof box body 10 is formed by the frame 12, the two side plates 13a and 13b, and the top plate 14.

The soundproof box body 10 has side surfaces 1e and 1f forming the lengthwise direction of the soundproof box 1 opened, and the opening portion of the soundproof box body 10 is covered with two doors 20 and 20. A space for accommodating an engine, a working machine driven by the engine, and other devices is defined in the soundproof box 1.

In the present embodiment, the soundproof box 1 has a substantially hexahedral box shape with the doors 20 and 20 closed, and the doors 20 and 20 have the same length as the soundproof box 1 in FIGS. The side surfaces 1e and 1f that form the vertical direction are formed, and a part of the doors 20 and 20 together with the top plate 14 together with the soundproof box 1 are formed as described later.
Of the soundproof box 1 together with the side plates 13a and 13b.
To form side surfaces 1c and 1d in the width direction.

[Door] The doors 20 and 20 are the doors 20 and 20.
The side surface 1 in the longitudinal direction of the soundproof box 1 when the
e and 1f, for example, at least one of the two sides 21a and 21b in the height direction of the substantially rectangular plate bodies 21 and 21, both in this embodiment, and the upper edge 21c, the soundproof box main body 1
Two side plates 13a and 13b are bent in the joining direction with 0.
Located on the extension of the soundproof box 1 together with the side plates 13a and 13b
Side portions 22a, 22b forming side surfaces 1c, 1d in the width direction of the
And an upper surface portion 23, which is located on the extension of the top plate 14 and forms the upper surface 1a of the soundproof box 1 together with the top plate 14, is formed in an inverted L shape in the vertical cross section and is formed in a U shape in the horizontal cross section. Has been done. However, the shape of the door 20 is thus the upper surface 2
It is not limited to the shape having 3 and the side surface portions 22a and 22b,
It may be a plate-like member having no such elements, or may have various other shapes.

The doors 20 and 20 in the illustrated example may be formed integrally by bending one metal plate, and the plate body 21 is provided with side plate portions 22a and 22b and a top plate portion 23. A plurality of metal plates may be fixed by welding, bolting, or any other method to form the above-mentioned shape, and the forming method is not limited.

Further, in the embodiment shown in FIGS. 1 to 4, the upper surface portion 23 has a shape in which the corners are gradually bent to reduce the corners, but the upper surface portion 23 is perpendicular to the upper side 21c of the plate body 21. The plate body 21 may be bent integrally with the plate body 21 so as to be curved and smoothly changed, and the structure thereof is not limited to those shown in FIGS.
Also, the bent portions of the side surface portions 22a and 22b can be modified in various ways as with the upper surface portion 23.

In FIGS. 1 to 4, reference numerals 30 and 30 denote lower covers attached to the sides 12c and 12d forming the length direction of the frame 12, respectively. The bottom 1b is the frame 12
Is extended in the width direction.

[Intermediate Position Locking Mechanism of Door] Between the peripheral edge of the top plate 14 of the soundproof box body 10 having the above-described configuration in the length direction and the edge of the upper surface portion 23 of the door 20, 20, Hinge 4
Doors 20 and 20 are attached in a flip-up manner so as to be capable of closing the openings formed on the side surfaces 1e and 1f, which are connected via 0.

The doors 20, 20 are provided with means for restricting rotation of the doors in the opening direction at a predetermined intermediate position between the fully closed position and the fully open position, and at least the intermediate position.
It is provided with a door intermediate position locking mechanism including a biasing means 60 for biasing the door 20 in the opening direction against its weight.

In the present embodiment, a gas cylinder is used as the above-mentioned urging means 60 as shown in FIGS. 2 to 4, and one end 61 of this gas cylinder 60 is rotatably attached to the soundproof box body 10. In addition to being pivotally supported, the other end 62 is also pivotally supported by the door 20 so that the door 20 is biased in the opening direction by the extension action of the gas cylinder 60.

In this embodiment, one end 61 of the gas cylinder 60 attached to the soundproof box body 10 is connected to the door 20.
It is arranged so as to be located below the other end 62 of the gas cylinder attached to the
And a line X connecting the rotation center of the other end 62 of the gas cylinder 60 connected to the door 20, the one end 61 of the gas cylinder 60 connected to the soundproof box main body 10 is irrespective of the opening degree of the door 20. Although the door 20 is always biased in the opening direction by the gas cylinder 60 by arranging the gas cylinder 60 so as to be always located on the soundproof box body 10 side, the mounting position of the gas cylinder 60 is not limited to the illustrated example. For example, in the fully closed position of the door 20, the soundproof box main body 10 side with respect to the line X connecting the rotation center P of the hinge 40 and the rotation center of the other end 62 of the gas cylinder 60 connected to the door 20. Is arranged so that one end 61 of the gas cylinder 60 is located on the opposite side of the gas cylinder 60, and the gas cylinder 60 is configured to generate an urging force in the direction of closing the door 20. To the gas One end 61 of the Sunda 60, hinge 4
The door 20 may be biased in the opening direction by being displaced toward the soundproof box body 10 side with respect to a line X connecting the rotation center P of 0 and the rotation center of the other end 62 of the gas cylinder 60. In this case, the positions of both ends 61 and 62 of the gas cylinder 60 are set so that the urging force in the opening direction is generated in the door 20 at least at an intermediate position described later.

The urging means 60 for urging the door 20 in the opening direction is not limited to the gas cylinder 60 described above, and other known urging means such as one utilizing the urging force of a spring may be used. be able to.

In this way, when the door 20 is biased in the opening direction, when the door 20 is rotated from the fully closed position to the fully opened position, the door 20 is rotated to an intermediate position before reaching the fully opened position. Means are provided for stopping.

The means for stopping the rotation of the door in the opening direction is a guide member 51 attached to the door 20 and one end 5
4a is fitted in a guide groove 52 formed in the guide member 51, and the other end 54b is realized by a stay 54 rotatably locked to the soundproof box body 10.

The above-mentioned guide member 51 is made of a metal plate or the like protruding in a direction substantially orthogonal to the inner wall of the door 20 with the vertical direction of the door 20 in the fully closed position as the length direction.
In the length direction of the guide member 51 made of this metal plate or the like,
A guide groove 52 having a predetermined length is formed.

The guide groove 52 has a shape in which one end 52a located on the upper side in FIG. 2 is wider than the other portion when the door 20 is at the fully closed position, and in this embodiment, ,
Located at one end 52a of the guide groove 52, an extraction hole 56 having substantially the same radius as the groove width of the guide groove 52 is formed at one end 5a of the guide groove.
The groove width is expanded to a semi-arcuate shape on the door 20 side by being formed so as to be overlapped with 2a, and a retainer 72, which will be described later, can be extracted through the extraction hole 56.

In the present embodiment, the stay 54 for restricting the movement of the door 20 in the opening direction at the above-mentioned intermediate position has both ends of a cylindrical rod in the longitudinal direction of the rod as shown in FIG. By bending in a direction orthogonal to each other and engaging the bent portions with the mounting holes 16 provided in the soundproof box main body 10 and the guide groove 52 of the guide member 51 mounted on the door 20, respectively. While inserting the aforementioned bent portion provided at one end 54a of 54 into the guide groove 52,
A washer 72 or the like is fixed to the end portion of the bent portion protruding through the guide groove 52 as a stopper to prevent the stay 54 from falling out of the guide groove 52. The washer 72 has a diameter slightly smaller than that of the extraction hole 56 formed at one end of the guide groove 52.

On the other hand, the bent portion formed on the other end 54b of the stay 54 is inserted into the mounting hole 16 provided in the partition plate 15 of the soundproof box body 10, and the bent portion protruding from the mounting hole 16 is inserted. By forming a pin hole penetrating this in the diameter direction at the tip of the, and fitting a washer 72 etc. as a retaining tool, and inserting a retaining pin 71 into this pin hole, the soundproof box body The stay 54 is rotatably attached to the fixed position of 10.

The stay 54 is attached by the soundproof box body 10
It is preferable that the play L1 of the stay on the side is formed to be slightly longer than the sum L2 of the thickness of the guide member 51 and the protruding length of the bent portion of the one end 54a of the stay 54 protruding through the guide member 51. By forming the stay 54 into one end 54 of the stay 54 fitted in the guide groove 52.
When a is extracted through the extraction hole 56, it can be easily performed by, for example, sliding one end of the stay 54 upward in FIG.

The structure of the stay 54 is not limited to the illustrated example, and the rotation of the door 20 in the opening direction can be restricted at a predetermined position, and one end 54a on the door 20 side can be extracted from the guide groove 52. The structure is not limited to the illustrated example as long as it is possible, and various modifications are possible. In the example shown in FIG. 8, both ends 54a and 54b of the stay 54 are bent in opposite directions. The stay 54 may be bent into a substantially U shape, and the stay 54 may have another shape other than the round bar, such as a square bar shape or a plate shape, and various other modifications are possible.

The one end 54a of the stay 54 to which the washer 72 for preventing the slip-off is attached in this way is shown in FIG.
As shown in FIG. 5, the guide groove 52 is slidably locked in the guide groove 52.

Both ends 54a and 54b of the stay 54 are locked at the other end 54 attached to the soundproof box body 10 side.
b is to one end 54a attached to the door 20 side,
The door 20 is provided at the rotation center P side (upper side in the example of FIG. 1). When the stay 54 arranged in this way is disconnected from the one end 54a of the door 20, the stay 54 is separated from the soundproof box main body 1
The stay 54 is hung on the 0 side, but at this time, one end of the stay 54 does not have a length protruding from the opening, so that the stay 54 is sandwiched between the door 20 and the periphery of the opening of the soundproof box body 10 when the door 20 is opened and closed. There is no.

Preferably, the other end 54b of the stay 54 is located closer to the soundproof box body 10 than the upper end of the one end 54a of the stay 54 in the vertical direction.
Since one end 54a of the above is arranged on the soundproof box main body 10 side with respect to the range of rotation of the door due to its own weight, as long as the soundproof box 1 is arranged on a flat ground, it can be prevented from colliding with the door 20 that opens and closes.

The guide groove 52 formed in the guide member 51 is such that the end portion 54b of the stay 54 is the other end 52 of the guide groove when the door 20 is at the fully closed position as shown in FIG.
When the door 20 is located on the b side and is in the intermediate position with the door 20 opened as shown in FIGS. 3 and 7, the end portion 54b of the stay 54 is located on the end portion on the one end 52a side of the guide groove 52 in which the extraction hole 56 is formed. The door 20 is locked and is formed to have a length capable of restricting the further opening of the door 20.

The operation method of the door intermediate position locking mechanism attached to the door 20 of the soundproof box 1 as described above will be described. First, the door 20 of the soundproof box 1 is at the fully closed position shown in FIG. At the periphery of the opening of the soundproof box main body 10, a latch 81 or the like that operates in conjunction with the handle 80 provided on the door 20 protrudes from, for example, the lower edge of the door 20, and the latch 81 is closed by the door 20. The door 20 is locked in the fully closed position by being locked to the fastener 82 provided in the door (see FIG. 5).

At this time, the stay 54 connecting the door 20 and the soundproof box main body 10 is in a state in which the length direction thereof is substantially vertical as shown in FIG. 2, and is stayed in the guide groove 52. One end 54a of 54 is the other end 5 of the guide groove 52.
It is located closer to 2b and is fitted into the guide groove 52.

By operating the handle 80, the latch 81 locked to the fastener 82 is retracted upward in FIG.
The lock of the door 20 between the latch 81 and the fastener 82 is released, and the door 20 can be opened.

Since the door 20 is constantly urged in the opening direction by the urging force of the gas cylinder 60, the latch 81 and the fastener 82 are unlocked and the lower end of the door 20 is slightly raised. Then, the door 20 rotates around the hinge 40 and jumps upward.

The rotation path of the stay 54 at one end 54a is shown in FIG.
As shown by the broken line in the drawing, at the fully closed position of the door 20, the guide groove 52 is located inside the rotation path of the other end 52b of the guide groove 52 centered on the hinge 40 and outside the rotation path of the one end 52a of the guide groove 52. As the stay is rotated in the opening direction, one end 54a of the stay relatively moves to the inner circumferential side in the direction of rotation of the door, and the guide groove 5
2 It approaches the turning trajectory of the one end 52a. Then, at the intermediate position of the door 20, as shown by the broken line in FIG.
Since the arrangement and the radius of rotation of each part are determined so as to intersect with the rotation orbit of the one end 52a, when the door 20 jumps upward by the urging force of the gas cylinder 60 to reach the intermediate locking position, the guide groove 52 of the guide groove 52 is formed. The one end 52a acts as a locking portion to restrict the relative movement of the one end 54a of the stay 54.

In this way, when the movement of the one end 54a of the stay 54 is restricted, the rotation of the door 20 in the opening direction is stopped at this position. Since the force acting on the door 20 by the gas cylinder 60 is set to a force sufficient to flip the door 20 upward against its weight, even if the hand is released from the door 20 in this state, The door 20 does not rotate in the closing direction. Therefore, the door 20 is locked at the preset intermediate position by the biasing force of the gas cylinder 60 and the rotation restriction of the stay 54 in the opening direction.

When closing the door 20 at this intermediate position, the door 20 is rotated in the closing direction against the biasing force of the gas cylinder 60 without any special operation. When the door 20 is rotated to the fully closed position where the latch 81 provided on the door 20 is locked to the fastener 82, the door 20 is locked at the fully closed position and the soundproof box body 10 Block the opening.

When it is necessary to further open the door 20 in the fully opening direction beyond the above-mentioned intermediate position, one end 54a of the stay 54 locked in the guide groove 52 of the guide member 51.
Is removed from the guide groove 52, and the door 2 by the stay 54 is removed.
Release the 0 rotation restriction.

From the guide groove 52 to one end 54a of the stay 54
When the door is removed, the door 20 is slightly rotated in the closing direction, and the one end 54a of the stay 54 is extracted together with the washer 72, which is a retainer, from the extraction hole 56 formed in the one end 52a of the guide groove 52.

By removing one end 54a of the stay 54 to which the washer 72 is attached from the guide groove 52,
The stay 54 is released from the restriction on the rotation of the door 20 in the opening direction, and the door 20 is further rotated in the fully opening direction by the urging force of the gas cylinder 60, so that the door 20 is opened to the extendable length. (See FIG. 4).

The stay 54, whose one end 54a is removed from the guide groove 52, rotates about the other end 54b of the stay 54 connected to the soundproof box body 10 by its own weight, and the one end 54a of the stay 54 is directed downward. It will hang down (see Fig. 4).

At the fully closed position of the door 20, the soundproof box body 1
The other end 54b of the stay 54 connected to 0 is arranged on the soundproof box main body side in the vertical direction above the other end of the stay 54 connected to the door 20 side. The stay 54, the other end of which is removed, is arranged in a storage space formed in the soundproof box 1.

As described above, when the door 20 in the fully opened position is closed, the door 20 is rotated in the closing direction by a force that opposes the biasing force applied by the gas cylinder 60, thereby closing the door 20. .

In the closing operation of the door 20, when the door 20 moves to the above-mentioned intermediate position, the guide groove 5 is moved as described above.
The one end 54a of the stay 54 removed from No. 2 can be fitted into the guide groove 52 again to guide the movement by the guide groove 52. However, in the door intermediate position locking mechanism of the present invention, Even when the door 20 is closed without forgetting to fit the one end 54a of the stay 54 into the guide groove 52 as described above, the stay 54 is disposed in the storage space formed in the soundproof box 1. Therefore, in the opening / closing operation of the door 20, the stay 54 collides with the door 20, or the stay 54 is sandwiched between the opening 20 of the soundproof box main body 10 and the door 20. It is prevented from being damaged or damaged.

In this way, the latch 81 provided on the door 20 is attached to the fastener 8 provided on the soundproof box body 10.
When the door 20 is rotated until it is locked by the door 2, the door 20 is locked with the opening of the soundproof box body 10 closed,
The closing work of is completed.

Next, another embodiment of the present invention will be described with reference to FIG.
Will be described below with reference to FIG.

The locking mechanism of the door shown in FIG. 10 differs from the locking mechanism of the embodiment shown in FIGS.
Only the shape of the guide groove 52 formed in the second embodiment is different, and other configurations are similar to those of the locking mechanism of the above-described embodiment.

In this embodiment, the guide groove 52 is formed at a substantially intermediate point between the one end 52a and the other end 52b.
A protrusion 521 is formed on the edge of the soundproof box body 10 side of the edge of the guide groove 52 in the lengthwise direction as a locking portion that restricts the movement of the one end 54a of the stay 54 that swings in the inside of the guide groove 52. The door 20 facing the edge of the soundproof box body
A concave portion 522 corresponding to the shape of the protruding portion 521 is formed on the side edge portion, and one end 5 of the stay 54 fitted in the guide groove 52 even at the position where the protruding portion 521 is formed.
It is configured so as to ensure a groove width through which 4a can pass.

In the locking mechanism of the present invention including the guide body 51 in which the guide groove 52 thus formed is formed, when the door 20 is rotated in the opening direction from the fully closed position, this rotation is performed. Accordingly, one end 54a of the stay 54 is attached to the guide groove 52.
After moving inside, one end 54a of the stay 54 collides with this protruding portion 521.

The protrusion 521 moves in the guide groove 52 because the protrusion 54 has a height and shape such that one end 54a of the stay 54 which rotates counterclockwise in FIG. One end 5 of stay 54
4a is guided by the collision with the projecting portion 521.
The movement in the direction of the one end 52a is restricted. Therefore, the door 2
Even when it is rotated 0, the stay 54 whose one end 54a is fixed in position
Limited by The locking position of the door 20 by the protrusion 521 is hereinafter referred to as “first intermediate position”.

In order to further rotate the door 20 in the fully open direction from the first intermediate position, one end 54a of the stay 54, which is urged downward by its own weight and meshed with the projecting portion 521.
10 is slightly lifted in the clockwise direction in FIG. 10 and the door 20 is further rotated in the opening direction in this state, the stay 5
4 has one end 54a formed in the guide groove 52.
After passing over 1, the door 20 is further rotated in the opening direction to start the movement of the guide groove 52 toward the one end 52a.

The recess 5 corresponds to the position where the protrusion 521 is formed.
The guide groove 52 in which 22 is formed is provided with a groove width sufficient for the one end 54a of the stay 54 to move over the projecting portion 521 even at the position where the projecting portion 521 is formed. Stay 5 over 521
The one end 54a of the guide groove 52 extends to the one end 52a of the guide groove 52 by the rotation of the door 20 in the opening direction.
Guided inside and move. Then, the guide groove 52 reaches the one end 52a and its movement is regulated, and as a result, the rotation of the door 20 is regulated for the second time at this position. It should be noted that one end 54a of the stay 54 is locked to the one end 52a of the guide groove 52, and the intermediate locking position of the door 20 stopped,
Hereinafter, it is referred to as a "second intermediate position".

In this way, when the door 20 locked at the second intermediate position is further rotated to the fully open position, one end 54a of the stay 54, which is locked in the guide groove 52 together with the washer 72, is used. Is removed through the extraction hole 56 formed in the one end 52a of the guide groove 52 to release the restriction of the rotation range of the door 20 by the stay 54 and further rotate it in the fully open direction to the fully open position. It can be opened.

In the present embodiment, the description has been given of the structure in which the intermediate position of the door is set at the two positions of the first and second intermediate positions, but the intermediate position may be provided at two or more positions.

Further, one end 52a of the guide groove 52 is moved toward the center of rotation of the door 20 so that the one end 54a of the stay 54 is locked to the one end 52a of the guide groove 52 of the guide member 51 at the fully opened position of the door 20. If extended, stay 5
Even if one end 54a of No. 4 is not removed from the guide groove 52, the door 20
Can be rotated between a fully open position and a fully closed position, and the door can be locked at an intermediate position.

[0070]

With the above-described structure of the present invention, the door is locked at an intermediate position of a predetermined angle between the fully closed position and the fully open position, and the door can be locked between the fully open position, the intermediate position and the fully closed position. It is easy to rotate the door, and even when the door is closed from the fully open state without any special work or operation, the stay is between the door and the peripheral edge of the opening closed by the door. It was possible to provide a door intermediate position locking mechanism that does not cause an accident such as being caught in a door.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a soundproof box showing an example of a closed body to which a door intermediate position locking mechanism of the present invention is attached.

FIG. 2 is a side view of the soundproof box with the door closed.

FIG. 3 is a side view of the soundproof box in which the door is locked at an intermediate position.

FIG. 4 is a side view of the soundproof box with the door in the fully open position.

FIG. 5 is a sectional view of a main part of a door.

FIG. 6 is a sectional view of a main part of a door.

FIG. 7 is an explanatory diagram showing a positional relationship between a door locked at an intermediate position and one end of a stay.

FIG. 8 is an explanatory diagram showing a mounting state of a stay.

9 is a view on arrow D of FIG.

FIG. 10 is a sectional view of a main part of a door showing a modified example of the guide member.

FIG. 11 is a schematic perspective view showing a conventional intermediate position locking mechanism of a door.

FIG. 12 is an explanatory view of a conventional door intermediate position locking mechanism, showing a state in which the door is at an intermediate position.

FIG. 13 is an explanatory view of a conventional door intermediate position locking mechanism, showing a state in which the door is in a fully open position.

[Explanation of symbols]

1 soundproof box 1a Top surface (of soundproof box) 1b Bottom (of soundproof box) 1e, 1f Side (longitudinal direction of soundproof box) 1c, 1d Side (width direction of soundproof box) 10 Soundproof box body 12 frames 12a, 12b Short side (of frame) 12c, 12d side (of frame) 13 (13a, 13b) Side plate 14 Top plate 15 Partition plate 16 mounting holes 20 doors 21 plate 21a, 21b One side in the height direction (of the plate body) 21c Upper edge (of plate) 22a, 22b Side part (of door) 23 Top surface (of door) 30 bottom cover 40 hinge 51 Guide member 51 'guide bracket 52 guide groove 52a One end (of guide groove) 52b The other end (of the guide groove) 521 protrusion 522 recess 54 stay 54a One end (of stay) 54b Other end (of stay) 54 'arm 56 Extraction hole 60 Biasing means (gas cylinder) 61 One end (of biasing means) 62 other end (of urging means) 71 pin 72 Stopper (washer) 80 handle 81 Latch 82 Fastener 90 stopper 91 Belt member 92 Retractor 93 opening 94 Stopper ring

Claims (5)

[Claims] 1. A door whose upper end is rotatably supported by a structure having an opening and which pivots in a vertical direction to open and close the opening, comprises a fully closed position and a fully open position of the door. In an intermediate position locking mechanism of a door that locks at an intermediate position between, one end is connected to the door, and the other end is fixed on the structure on the rotation center side of the door with respect to this one end. A stay that is rotatably connected to the position and is arranged such that the one end relatively moves toward the inner peripheral side in the rotation direction of the door when the door is opened, and one end of the stay is detachable. And a guide member that is connected to the door in a state where the relative movement is possible, and an urging means that urges at least the door at the intermediate position in the opening direction against the weight thereof. Fits one end of the stay and proposes the relative movement of one end of the stay. Comprising a guide groove, the guide groove, when opening the door to the intermediate position,
An intermediate position locking mechanism for a door, comprising: a locking portion that stops relative movement of one end of the stay toward an inner circumferential side of the door in a rotation direction. 2. The door intermediate position locking mechanism according to claim 1, wherein the other end of the stay is disposed on the structure side with respect to a vertically upper side of one end of the stay. 3. The door intermediate position locking mechanism according to claim 1, wherein the locking portion is an end portion of the guide groove on an inner peripheral side in a rotation direction of the door. 4. The guide member has an extraction hole that widens the groove width of the guide groove at an end portion on the inner peripheral side in the rotation direction of the door, and is fitted into the guide groove through the extraction hole. 3. The door intermediate position locking mechanism according to claim 1, wherein one end of the stay is configured to be pulled out. 5. The guide groove of the guide member forms a protrusion that locks the one end of the stay that relatively moves at any position between both ends in the length direction, as the locking portion, and the protrusion is formed. 5. A groove width that allows one end of the stay to pass through at the formation position of the groove.
The door intermediate position locking mechanism described in the item.