JP3007257U - Door airtight holding device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a door airtight holding device with few malfunctions and failures and easy to assemble and maintain. [Structure] An elevating inner frame 5 is housed in a fixed outer frame 3 which is embedded in a lower edge of a door body 1 and has an open lower surface so that the elevating inner frame 5 can be freely retracted downward. A shielding member 7 is attached to the lower part of the elevating inner frame 5. The actuation elastic wire 10 is housed in the fixed outer frame 3, the rear end of the actuation elastic wire 10 is fixedly supported by the fixed outer frame 3, and the tip end thereof is projected from the side edge of the door. A supporting portion 16 is provided at an intermediate portion of the operating elastic wire 10, and the supporting portion 16 supports the supporting shaft 9 at the substantially center of the elevating inner frame 5.
Support.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door airtight holding device which is attached to a lower edge of a door for a general house and prevents drafts from entering the room.

[0002]

[Prior art]

 Conventionally, in order to increase the airtightness at the door part, a retractable shielding member is attached to the lower edge of the door, and when the door is closed, this shielding member is automatically lowered to lower the door and the floor. A number of door airtight holding devices of a type that shields the gap between and have been proposed. The general structure of these conventional devices is that the tip of the operating rod is projected from the side edge of the door, and when the door is closed, the rod tip collides with the door frame and is pushed in. Then, the shielding member is lowered. In addition, as a mechanism for linking the protruding and retracting of the rod with the descent of the shielding member, a method in which the rod is made of a spring material and the bending deformation of the rod is used, a method using a link mechanism, etc. are generally used.

[0003]

[Problems to be solved by the device]

 However, in a conventional door airtight holding device using a spring rod, an elongated leaf spring is used for the rod. However, the leaf spring bends in the direction orthogonal to the plate surface but does not bend in the width direction. Therefore, when the tip is pushed in, it tries to bend in the orthogonal direction exactly by the amount corresponding to the movement amount. This property is excellent in that it can surely raise and lower the shielding member, but on the other hand, since there is no escape, it poses a practical problem.

For example, in a leaf spring, the amount of movement of the tip and the amount of elevation of the shield member are in direct proportion to each other, so the amount of protrusion of the tip must be adjusted accurately in accordance with the required amount of elevation. No Otherwise, the amount of descent will be insufficient, so that complete shielding will not be possible, or conversely, the force of the descent will still work even after sitting on the floor. Moreover, when a foreign object is caught under the shielding member to prevent the foreign matter from descending, an unreasonable force acts on the leaf spring. Then, such unreasonable force results in failure due to defective operation or damage to each member such as a leaf spring.

In view of such a point, the present invention has a degree of freedom in the bending direction of the spring material and absorbs an excessive force by bending in the lateral direction so that no failure occurs and assembly or maintenance is prevented. It is an object of the present invention to provide an easy door airtight holding device.

[0006]

[Means for Solving the Problems]

 The technical means of the device for maintaining airtightness of the present invention are: a fixed outer frame with an open lower surface embedded in the lower edge of the door body; an elevating inner frame that is retractably housed in the fixed outer frame; It consists of a shielding member made of elastic material attached to the lower part of the, and an actuating elastic wire housed in the fixed outer frame.The actuating elastic wire has a circular cross section and can flex freely in any direction. In addition, the operating elastic wire has a rear end fixedly supported by a fixed outer frame, a front end protruding from the side edge of the door so as to be retractable and retractable, and a supporting portion is provided at an intermediate portion of the operating elastic wire. The supporting part supports the supporting shaft provided in the approximately center part of the elevating inner frame.

Further, the supporting portion having the pair of support shaft contact areas may be formed by bending the operating elastic wire.

[0008]

[Action]

 In the airtightness maintaining device for a door of the present invention, the elevating inner frame can be retracted and retracted from the lower surface of the fixed outer frame, and when the elevating inner frame descends and protrudes, the shielding member attached to the lower part of the elevating inner frame comes into contact with the floor surface and the door is closed. Shield the gap between the bottom edge and the floor. When the pressing force does not act on the tip of the working elastic wire, the working elastic wire is expanded by its own elastic restoring force. Then, the supporting portion provided in the middle portion lifts the elevating inner frame through the support shaft. When the distal end of the operating elastic wire is pushed by the collision with the door frame and moves in the retracted direction, the operating elastic wire is bent by the amount of the movement, the position of the support portion is lowered, and the inner frame is lowered.

Since the operating elastic wire has a circular cross section, the bending thereof is not directional. Therefore, when the lowering is not impeded, the operating elastic line bends in the vertical direction by the amount of the pushing of the tip. Then, when the shielding member is seated on the floor or foreign matter is caught in the lower surface of the shielding member and the lowering is obstructed, the operating elastic line bends laterally and bends to absorb the excessive pushing amount. Therefore, it suffices if the tip of the operating elastic wire is projected in a large number, and it is not necessary to accurately adjust and set the projection amount in accordance with the required drop amount as in the conventional case.

[0010]

【Example】

 An embodiment of a door airtightness maintaining device of the present invention will be described with reference to the drawings. A groove 2 is formed along the entire length at the lower edge of the door body 1, and a fixed outer frame 3 is fitted in the groove 2. The fixed outer frame 3 has an open bottom surface and has flange portions 4 on both sides of the lower end, which are screwed to the door body 1.

Reference numeral 5 denotes an elevating inner frame, which is movably accommodated in the fixed outer frame 3 so that it can be projected and retracted downward. A step portion 6 is provided on the inner wall of the fixed outer frame 3 and serves as a stopper for the raised position of the inner frame 5. A shield member 7 made of an elastic material such as rubber is attached to the lower portion of the inner frame 5. The shield member 7 may be made of two materials, the upper half of which is a hard elastic material and the lower half of which is a soft elastic material. A groove 8 is formed on the upper surface of the elevating inner frame 5 along the longitudinal direction, and a spindle 9 is provided at a substantially central portion of the groove 8 in the longitudinal direction. The lifting inner frame 5 is supported by the support shaft 9 in a tiltable state.

Reference numeral 10 denotes an operating elastic wire, which is a metal elastic wire having a circular cross section, and a piano wire (hard steel wire) is usually used. A cap 12 is screwed to the tip of the actuating elastic wire 10 via a tip fitting 11, and the position of the cap 12 can be adjusted in the axial direction by changing the screwing amount. The cap 12 projects from the side plate 13 of the main body of the door 1. When the door is closed, the tip of the cap 12 collides with the door frame and is moved in and out. Reference numeral 14 is a movement guide pin. A fixed support pin 15 fixedly supports the rear end of the operating elastic wire 10 to the outer frame 3.

A supporting portion 16 is provided near the center of the operating elastic wire 10 and supports the supporting shaft 9 of the elevating inner frame. The support shaft contact area 17 of the support portion 16 is formed to be long so that the support shaft 9 can move laterally to some extent. On both sides of the contact area 17, a stopper wall 18 formed by bending a wire rod is formed. Is provided.

Next, the operation of the device will be described. When the door is open, nothing is in contact with the tip of the cap 12 and the cap 12 is in a free state, so that the cap 12 projects and the operating elastic line 10 expands as shown in FIG. 1 by its elastic restoring force. It becomes a state. When the line 10 extends, the position of the support portion 16 rises, so that the elevating inner frame 5 supported via the support shaft 9 is pulled up. Since the extension restoring force of the line 10 is set sufficiently larger than the gravity of the inner frame 5 and the shielding member 7, the inner frame 5 and the like can be pulled up quickly and smoothly. The inner frame 5 that has been pulled up collides with the step portion 6 and is locked and held, and the inner frame 5 is completely immersed in the outer frame 3. In this state, the shielding member 7 is separated from the floor surface A, so that it does not interfere with the opening / closing operation of the door.

Next, when the door is closed, the tip of the cap 12 collides with the door frame B, and the cap 12 is pushed in the retracted direction as shown in FIG. As a result, the operating elastic wire 10 is flexibly deformed, the supporting portion 16 descends, and at the same time, the inner frame 5 projects and descends, and the shielding member 7 contacts the floor surface A. Since the engaging portion between the support portion 16 and the support shaft 9 has a play, the inner frame 5 can be vertically lowered without moving laterally.

Since the operating elastic wire 10 is a wire having a circular cross section, it does not have a directionality against bending and can be bent not only in the vertical direction but also in any direction. Therefore, for example, when foreign matter is caught on the lower surface of the shielding member 7 and the lowering is obstructed, the actuation elastic wire 10 bends and bends in the lateral direction to absorb the obstruction of the lowering, so that the operation failure is not caused. In addition, the members are not damaged. Furthermore, this escape also exhibits an absorbing effect when the movement amount of the cap 12 is larger than the required amount and the shielding member 7 still tries to bend after sitting on the floor surface A. Therefore, it is not necessary to adjust the position of the cap accurately, and for example, even when the fitting is deformed due to long-term use, it is not necessary to adjust the position of the cap, and maintenance work can be omitted.

The door airtightness maintaining device of the present invention is not limited to the above-mentioned embodiment, but can be freely modified within the scope of the claims of the utility model. In particular, the material of the actuating elastic wire 10, the presence or absence of a cap attached to the tip, the fixed support structure at the rear end, the shape of the support portion 16 and the like can be freely selected within the range where the purpose can be achieved.

[0018]

[Effect of device]

 The door airtightness retaining device of the present invention allows the operating elastic wire to flex freely in any direction, so even if the tip is excessively retracted or moved, or if the shielding member is hindered from descending, It can be absorbed by the actuation elastic wire bending and bending laterally. Therefore, strict adjustment of the amount of protrusion of the tip of the operating elastic wire is not required, assembly and maintenance are easy, and moreover, a good shielding operation state can always be maintained.

According to the second aspect, since the supporting portion is formed by bending the operating elastic wire, manufacturing is facilitated and the cost of the entire device can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a door airtightness maintaining device according to an embodiment of the present invention with a door opened.

FIG. 2 is a vertical cross-sectional view with a door closed.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Door Main Body 3 Fixed Outer Frame 5 Elevating Inner Frame 7 Shielding Member 9 Support Shaft 10 Acting Elastic Wire 12 Cap 16 Bearing Part 17 Pair Support Shaft Contact Area

Claims (2)

[Scope of utility model registration request] 1. A fixed outer frame which is embedded in a lower edge of a door body and has an open lower surface, an elevating inner frame which is retractably housed in the fixed outer frame, and an elastic material which is attached to a lower portion of the elevating inner frame. Made of a shield member and an actuating elastic wire housed in a fixed outer frame. The actuating elastic wire has a circular cross section and can flex freely in any direction. The end is fixedly supported by the fixed outer frame, the tip projects from the side edge of the door so that it can be retracted and retracted, and a supporting portion is provided in the middle portion of the operating elastic wire. An airtight holding device for a door, in which a support shaft provided in a central portion is supported. 2. By bending the operating elastic wire,
A bearing portion having a contact area with the support shaft is formed.
Airtightness maintaining device for the door described.