JP5423386B2 - Door sag prevention mechanism - Google Patents

Description

  The present invention relates to a mechanism that is provided in a housing provided with an opening and closing door and prevents the opening and closing of the opening and closing door.

  In a casing provided with an opening / closing door, the opening / closing door is opened and closed using a hinge or the like, and the opening / closing door is supported by a hinge or a casing.

  For this reason, in the doors used for the housing that houses the switchboard, etc., a load that cannot be supported by the hinge and the housing such as the weight of the door and the weight of the equipment attached to the door is applied, and the door side is displaced. (That is, the door hangs down).

  In order to prevent the door from drooping, for example, the support fitting described in Patent Document 1 is opened and closed by supporting a bracket provided on the upper inner surface of the door with a support roller provided on the upper inner surface of the casing. Supports the door and prevents the door from hanging down.

  In addition, the support fitting 12 shown in FIG. 4 is configured such that the support plate 13 provided on the lower inner surface of the housing 3 having the opening / closing door 10 supports the bracket 14 provided at the lower portion of the opening / closing door 10, thereby It supports and prevents the door 10 from hanging down. The support fitting 12 uses the taper surface 15 formed on the support plate 13 and the taper surface 16 formed on the bracket 14 so that the support plate 13 rubs the bracket 14 and prevents the door 10 from hanging down. Yes. And this bracket 14 is provided using the hanging hole formed for coating of the door 10.

JP-A-6-2464

  However, the support metal fitting of Patent Document 1 has a cantilever structure in which the bracket is likely to be distorted due to the weight of the opening / closing door and the parts attached to the door. There was a possibility that it was not possible.

  Moreover, since the support metal fitting 12 shown in FIG. 4 is provided in the lower part of the housing 3, there is a possibility that the support plate 13 and the bracket 14 of the support metal fitting 12 may be deformed when stepped on. In addition, since the support fitting 12 has a scraping structure using the taper surfaces 15 and 16 of the support plate 13 and the bracket 14, the support door 10 is supported when the door 10 hangs down beyond the taper dimension. When the opening / closing door 10 has a large mass, friction when the support plate 13 and the bracket 14 are rubbed increases, and there is a possibility that smooth opening / closing of the opening / closing door 10 may be hindered.

  Accordingly, the door sag prevention mechanism of the present invention is a door sag prevention mechanism configured by a rotating member pivotally supported in a vertically rotatable manner on a fixing member provided on an upper end inner surface of a housing having an opening / closing door. The rotating member includes a front door contact portion that contacts the inner surface of the open / close door, a support portion that contacts the upper end inner surface of the open / close door and presses the open / close door upward, and an upper end inner surface of the housing And when the door is opened, the rotating member rotates while the front door abutting portion abuts against the inner surface of the open / close door. By stopping the rotation of the rotating member by abutment with the upper end inner surface of the housing, when the door is closed, the front door abutting portion receives the pressing of the opening and closing door, and the rotating member rotates. The support part presses and supports the open / close door upward Is characterized in that the no.

  Therefore, according to the above invention, it is possible to prevent the door from hanging down over a long period of time.

Sectional drawing of a housing | casing which has an opening-and-closing door provided with the drooping prevention mechanism of the door which concerns on embodiment of this invention (state in which an opening-and-closing door is closed). Sectional drawing of the housing | casing which has an opening / closing door provided with the drooping prevention mechanism of the door which concerns on embodiment of this invention (The state in the middle of the opening / closing door being closed). Sectional drawing of the housing | casing which has an opening-and-closing door provided with the drooping prevention mechanism of the door which concerns on embodiment of this invention (a state where an opening-and-closing door is an open state). Sectional drawing of the housing | casing which has an opening-and-closing door provided with the drooping prevention mechanism of the door concerning a prior art (state where an opening-and-closing door is closed).

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

  1 to 3 are cross-sectional views showing an embodiment of a housing having an opening / closing door provided with a door hanging prevention mechanism according to the present invention. FIG. 1 is a state in which the opening / closing door is closed, and FIG. Or the state in the middle of closing, FIG. 3 has shown the state in which the door is open.

  As shown in FIG. 1, the door sag prevention mechanism 1 according to the present invention is provided with a fixing member 8 fixed to a fixing portion 9 on the inner surface of the upper end of a housing 3 having an opening / closing door 10, and the fixing member 8. The rotating member 2 is pivotally supported on the rotating shaft 7 so as to be vertically rotatable. Examples of the shape of the rotating member 2 include a plate shape and a column shape.

  The rotating member 2 includes a support portion 4 that contacts the inner surface of the door 10 when the door 10 is closed and presses the door 10 upward, and before the door 10 contacts the inner surface of the door 10 when the door 10 is closed. When the door contact portion 5 and the opening / closing door 10 are opened, a claw portion 6 that contacts the lower surface of the fixed portion 9 and stops the rotation of the rotating member 2 is formed.

  The shape of the hooking portion 6 is formed such that the front door contact portion 5 is positioned above the rotation shaft 7 when the rotation of the rotary member 2 is stopped by the hooking portion 6. Moreover, it is good to equip the inner surface of the opening-and-closing door 10 with the door damage prevention member 11 which prevents the damage | wound of a door in the location where the support part 4 of the rotation member 2 and the front door contact part 5 contact | connect.

  An operation example of the door sag prevention mechanism 1 will be described with reference to FIGS.

  As shown in FIG. 1, when the door 10 is closed, the support portion 4 and the front door contact portion 5 of the rotating member 2 are in contact with the door 10 (in FIG. 1, the support portion 4 and the front door contact). Although the part 5 is in contact with the door scratch prevention member 11, it is assumed that it is in contact with the open / close door 10 for the sake of convenience of explanation. The same applies to FIG. The rotating member 2 is dimensioned so that the outer upper end of the housing 3 and the upper end of the door 10 are at the same height. Therefore, since the opening / closing door 10 is held such that the height of the upper end of the opening / closing door 10 is the same position (appropriate position) as the height of the upper end of the housing 3, a good appearance can be obtained.

  Further, by attaching the rotary member 2 so that the position of the center of gravity of the rotary member 2 is between the rotary shaft 7 and the front surface of the open / close door 10, the open / close door 10 can be operated even when the open / close door 10 is closed. The pressure of the contact portion 5 is received. Therefore, when opening the opening / closing door 10, the opening / closing door 10 is pressed in the opening direction, and therefore the opening / closing door 10 can be smoothly opened.

  When the opening / closing door 10 is opened, as shown in FIG. 2, the rotating member 2 rotates in the direction of arrow A while the front door contact portion 5 contacts the opening / closing door 10. Then, the rotation of the rotating member 2 is restrained by the contact between the locking portion 6 of the rotating member 2 and the fixed portion 9.

  When the open / close door 10 is in the open state, as shown in FIG. 3, the rotary member 2 is opened and closed in a state in which the rotation of the rotary member 2 is restrained by the retaining portion 6 coming into contact with the fixed portion 9. Ten contact waiting states are set.

  When the door 10 is closed, as shown in FIG. 2, the rotating member 2 rotates in the direction of arrow B while its front door contact portion 5 is in contact with the door 10. That is, the front door abutting portion 5 receives the pressure of the opening / closing door 10, the rotating member 2 rotates in the direction of arrow B, and the rotating member 2 rotates, whereby the support portion 4 of the rotating member 2 is It contacts the inner surface and presses the door 10 upward.

  In the description of the above-described embodiment, the rotating member 2 of the door sag prevention mechanism 1 only needs to have the functions of the support portion 4, the front door abutting portion 5, and the locking portion 6, and is shown in FIG. 1. The shape of the rotating member 2 is not limited. Moreover, the attachment position of the door sag prevention mechanism 1 is not particularly limited, and can be attached to the inner surface of the upper end of the housing 3. For example, the door can be supported on the opening side of the door 10. Furthermore, if necessary, a plurality of the door sag prevention mechanisms 1 may be provided for one door 10.

  As described above, according to the door sag prevention mechanism according to the present invention, since the opening and closing door is held at an appropriate position, the appearance is improved. And, when the door is closed, it absorbs vibration and shock during transportation with this door sag prevention mechanism, or supports the door load with this door sag prevention mechanism over a long period of use, The permanent set of the hinge can be prevented.

  In addition, the door sag prevention mechanism according to the present invention can be easily changed in design according to the degree of sag of the open / close door by adjusting the movable dimension of the rotating member. Furthermore, since the door sag prevention mechanism itself has a structure that is less likely to be distorted, a higher door sag prevention effect can be obtained as compared with a conventional door sag preventive bracket having a one-handed structure.

  Since the door sag prevention mechanism is provided on the inner surface of the upper end of the housing provided with the opening / closing door, there is no possibility of deformation of the door sag prevention mechanism due to being stepped on. Further, even when the open / close door is closed, the door sag prevention mechanism presses the open / close door in a direction in which the open / close door opens, so that the open / close door can be opened and closed smoothly.

DESCRIPTION OF SYMBOLS 1 ... Door sag prevention mechanism 2 ... Rotating member 3 ... Housing 4 ... Supporting part 5 ... Front door contact part 6 ... Locking part 7 ... Rotating shaft 8 ... Fixed member 9 ... Fixed part 10 ... Opening / closing door 11 ... Door scratch Prevention member

Claims (1)

A door sag prevention mechanism configured by a rotating member pivotally supported in a vertically rotatable manner on a fixed member provided on an upper end inner surface of a housing having an opening and closing door,
The rotating member is in contact with a front door abutting portion that abuts against an inner surface of the opening / closing door, a support portion that abuts against an upper end inner surface of the opening / closing door and presses the opening / closing door upward, and an upper end inner surface of the housing. And a locking portion for stopping rotation of the rotating member,
When the door is opened, the rotating member rotates while the front door abutting portion abuts on the inner surface of the opening / closing door, and then the clasp portion abuts on the inner surface of the upper end of the casing to rotate the rotating member. Stop,
When the door is closed, the front door abutting portion receives the pressure of the opening and closing door and the rotating member rotates, so that the support portion presses and supports the opening and closing door upward. A mechanism to prevent the door from drooping.

Images