JP2526150Y2 - Cover opening and closing link mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a link mechanism for opening and closing a cover of a wall-mounted display device or the like.

[Conventional technology]

Conventionally, a cover opening / closing link mechanism for opening / closing a cover of a wall-mounted display device or the like installed on a vertical wall generally holds the cover with a link in a state where the cover is opened at 90 degrees.
When opening it 0 degrees, the fixing screw at one end of the link was removed.

[Problems to be solved by the invention]

With the conventional cover opening and closing link mechanism described above, it is necessary to remove the screw fixing the link mechanism with 90 degrees open, support the cover with one hand, remove the fixing screw with one hand using a screwdriver and remove the cover Because it will open 180 degrees,
The operation became unstable, and the cover was accidentally opened, causing an accident in which it came into contact with the wall and was damaged. Also, when closing the cover, since one end of the link is fixed using a screwdriver, it is difficult to install it, requiring a lot of time, and lacking safety if screwing is incomplete. there were.

There is also a system in which the link mechanism is detached with one touch, but since the link is not stabilized at a fixed position in a state where the link mechanism is detached, an accident such as breakage of the link by the cover when closing the cover has occurred.

An object of the present invention is to provide a cover opening / closing link mechanism that solves the above problem.

[Means for solving the problem]

In order to achieve the above object, in the cover opening / closing link mechanism according to the present invention, an opening / closing cover pivotally supported so as to be reversible between an upward position covering the side surface of the wall-mounted housing and a downward position opening the side surface of the housing. A link mechanism that opens and closes the upper link, a center link, and a lower link.The upper link is rotatably supported by the housing, and the lower link is attached to the open / close cover. The center link connects the open ends of the uppermost link and the lowermost link, and the opening / closing cover has a fixture for detachably fixing the open end of the lowermost link. Is what it is.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a housing using the cover opening / closing link mechanism of the present invention, showing a state where a cover is opened. FIG. 2 is a side view showing a cover open / closed state.

In the figure, a wall-mounted housing 1 has a
The opening / closing cover 2 is rotatably supported on the lower opening edge 1a of the housing 1 through a hinge 22 so that the opening / closing cover 2 can be opened and closed. The housing 1 is inverted to the downward posture in which the opening is opened.

As shown in FIG. 3, the uppermost link 31 is rotatably supported by the bearing 14 on the inner surface of the housing 1, and the lowermost link 33 is rotatably supported by the bearing 25 on the inner surface of the opening / closing cover 2. The central link 32 is connected between open ends of the uppermost link 31 and the lowermost link 33 by link rotation shafts 301 and 302.
Here, the link mechanism 3 is configured by the links 31, 33, and 32. An L-shaped fitting 34 is provided integrally with the link rotating shaft 302, and a hook fitting 24 for engaging the L-shaped fitting 34 is attached to the inner wall surface 23 of the opening / closing cover 2.

In the embodiment, when the opening / closing cover 2 is closed, the fourth
As shown in the figure, the L-shaped fitting 34 is engaged with the hook fitting 24. When the opening / closing cover 2 is opened in the direction from the upward position to the horizontal position opened by 90 degrees, the L-shaped fitting 34 remains engaged with the hook fitting 24, the lowermost link 33 is fixed, and the uppermost link 31 is positioned. While rotating to 31A, the center link 32 is opened to a position 32A on the extension of the link 31, and the open / close cover 2 is held at the 90-degree position by the two links 31,32. Further, when the opening / closing cover 2 is opened to a position of 180 degrees in the direction, when the lowermost link 33 is rotated in the direction a with the bearing 25 as a fulcrum, the L-shaped metal fitting 34 is disengaged from the hook metal fitting 24. Is released. When the cover 2 is rotated in a direction beyond the 90-degree position, the link mechanism 3 moves in the direction b. The link mechanism 3 is in the housing 1 when opened 180 degrees.
The opening and closing cover 2 is supported in a downward position, and each link
31,32,33 are stabilized at positions 31B, 32B, 33B respectively.

If the cover opening / closing link mechanism of the present invention is used and the opening / closing cover 2 is 90 degrees open and the rotational force in the direction is applied by its own weight, the L-shaped bracket 34 acts in the direction in which the hooking bracket 24 engages. The operation is fixed, and the cover 2 can be securely held by the links 31 and 32. Even when the cover 2 is opened by 180 degrees, the L-shaped bracket 34 can be rotated in the direction a only by supporting the cover 2 lightly, so that the cover opening / closing operation becomes extremely easy. In the 180 degree open state, L of link 3
Since the mold fitting 34 does not protrude in the front direction, there is an advantage that safety at the time of replacement and maintenance of the attachment parts inside the housing and maintenance is ensured. When the cover 2 is closed, the L-shaped fitting 34 can easily be engaged with the hook fitting 24 while the cover 2 is held at the 90-degree open position, and the L-shaped fitting 34 can be easily closed.
Since the cover 2 is rotated by its own weight and engages with the hook 24, there is no danger that the cover 2 is directly opened up to 180 degrees, and the effect on safety is great.

[Effect of the invention]

As described above, according to the present invention, the three links are linearly connected, connected between the housing and the open / close cover, and the movement of one link is fixed, so that the open / close cover is fixed. Is held at a 90-degree open position, and the link is unlocked to open the open / close cover 180 degrees, so there is no need to attach and remove the open / close cover, and the cover can be opened and closed safely. In addition, since the link whose movement is restricted is fixedly held on the cover by the fixture, there is an effect that the link can be prevented from being damaged when the cover is opened and closed.

[Brief description of the drawings]

FIG. 1 is a front view using the link mechanism of the present invention, FIG. 2 is a side view showing opening and closing of the cover, FIG. 3 is a side view of the link mechanism, and FIG. 4 is a link viewed from the direction E in FIG. FIG. DESCRIPTION OF SYMBOLS 1 ... Wall-mounted type housing, 2 ... Opening / closing cover 3 ... Link mechanism, 24 ... Hook fitting 31 ... Top link, 32 ... Central link 33 ... Bottom link, 34 ... L type Fittings 14,25… Bearing, 301,302 …… Link rotating shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. A link mechanism for opening and closing an openable / closable cover which is pivotally supported to be reversible between an upward position covering a side surface of a wall-mounted type housing and a downward position opening a side surface of the case. , A center link, and a lowermost link. The uppermost link is rotatably supported by the housing, the lowermost link is rotatably supported by the opening and closing cover, and the center link is A cover opening / closing link mechanism for connecting the open ends of the uppermost link and the lowermost link to each other, wherein the opening / closing cover includes a fixture for detachably fixing the open end of the lowermost link.