JPH11350851A - Automatic close contact device for door floor surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easy the replacement work of a plunger by fixing a basic side of a leaf spring to a slide plug sliding in a guiding groove, connecting a fore side of the spring to a connection plug, connecting the connection plug to a fixed plug fixed in the guide groove so that it is separated from the fixed plug when a pulling force is applied thereto from the basic side. SOLUTION: When there is an operation error in a plunger, a door 4 is left open. Then, when a protruding and retracting member 17 is pulled out, a leaf spring 14 is elongated, a connection plug 20 is separated from a fixed plug 21 and the spring 14 and a plunger 10 are pulled out to the outside of a housing 9. In storing a new plunger into the housing 9, it is inserted into an accomodation part 9A, the connection plug 20 is inserted into a guide groove 15, and the member 17 is pushed in strongly. Then, the plugs 20, 21 are connected to each other. Accordingly, with a simple structure, the work not economical at the time of failure can be dispensed with, and inspection and maintenance work can be easily performed with the door mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic floor contact device for facilitating replacement and removal of a plunger (down member) in an automatic floor contact device fixed to a door bottom surface.

[0002]

2. Description of the Related Art Various types of floor contacting devices such as soundproof doors are used, but basically a descending member (plunger) is housed in a housing having an inverted U-shaped recess. When the door is closed, it is automatically brought into close contact with the floor. When the door is manufactured, the housing is fixed to the door body frame by a fixing screw penetrating the upper part of the housing, which is housed in a mounting portion formed in the door lower frame, and its surface is concealed by an outer panel and a decorative panel. I have. In this device, the plunger, which is a movable member, is most likely to cause a failure or malfunction,
Since the plunger is inserted and accommodated in the housing in the longitudinal direction and the intermediate portion is suspended and supported by the leaf spring, it must be removed together with the housing. Since the front side of the housing is covered with an outer panel or decorative panel, the decorative panel must be peeled off after the door is removed from the door frame, which is extremely uneconomical. A device in which the end surface of the housing is fixed only to the hanging side and the door end side of the door lower frame to eliminate such useless work (for example, Japanese Patent Application No. 6-170164) has been proposed. It has new disadvantages such as insufficient fixation of the middle part.

[0003]

SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned conventional uneconomical work, namely, removing the door body, transporting it to a factory, and peeling and removing a decorative board, etc., and attaching the door body to the door frame. An object of the present invention is to provide a device that allows only a plunger and a suspension spring inside a housing to be pulled out or inserted from a suspension side of a door while being fixed. In addition, the housing can be easily removed from the bottom surface of the door with the door body removed from the door frame, and the operation of the plunger can be adjusted by adjusting the position of the fixed plug in the housing.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a suspension plate spring of this type of apparatus is always subjected to a pressing force when the door is closed, and a pulling force or pulling force other than the horizontal component force due to the weight of the plunger when the door is opened. The focus is on the fact that no output is added, and the configuration is as follows. In the device of the present invention, the plunger is housed in an inverted U-shaped housing embedded and fixed to the bottom surface of the door lower frame, and the middle upper portion of the plunger is suspended by a leaf spring supported at both ends by a guide groove in the housing. In the automatic floor contacting apparatus, the base side of the leaf spring is fixed to a slide plug that slides in the guide groove, and the front side is connected to a connection plug, and the connection plug is fixed in the guide groove. The fixed plug is joined and joined so that it is separated when a tensile force is applied to the fixed plug from the original side. As the detachable connection or joining means, a mechanical method using friction, a spring or other elasticity, a method using a housing made of aluminum to connect by a magnetic attraction force using a permanent magnet, or a double-sided tape is used. There are methods. As a method of attaching the housing to the door lower frame, a method of fixing the housing from the bottom side of the housing is preferable to fixing the housing from the side as in the related art. Further, the fixing plug fixed in the guide groove of the housing is preferably fixed so that the position can be adjusted from the bottom side rather than from the side. The removal of the housing and the adjustment of the position of the fixing plug require the door to be once removed from the door frame, but has the advantage that the work can be carried out without damaging the facing plate and on site.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a hanging-side fixed column constituting a standing frame, 2 denotes a door-end-side fixed column, and 3 denotes a floor surface. Reference numeral 4 denotes a door, the surface of which is covered with an outer panel or a decorative panel 5, and a hinge 12
Is attached to the hanging column. 6 is the bottom frame, 7
Is the bottom surface. Reference numeral 8 denotes a floor contact device, which comprises a housing 9 made of an inverted U-shaped aluminum in cross section and a plunger 10 made of rubber or other soft member. The housing 9 is fixed to the lower frame 6 by screws 11. Reference numeral 13 denotes a pin that extends around the upper edge of the plunger 10 at a substantially intermediate portion, and is suspended by a suspension leaf spring 14. A wide guide groove 15 and a space 16 are provided above the plunger housing 9A in the housing.
Reference numeral 17 denotes a projecting length adjusting member which is screwed to a threaded rod 18 and is locked in the groove 15 to engage therewith. 19 is
This is a slide plug that is slidably inserted into the guide groove 15, one end of which is fixed to the tip of the rod, and the other end of which is connected to the base side 14a of the leaf spring 14. 20 is the front side 14b of the leaf spring
And is separably connected to a fixed plug 21 fixed in the guide groove by a set screw 22a or the like. 22 is a screw hole. Means for connecting or joining the connecting plug 20 and the fixed plug 21 are various, and as the mechanical connecting means, one of the connecting plug and the fixed plug is made of an elastic member such as rubber or soft synthetic resin as shown in FIG. It is possible to use one in which a fitting hole 21A is formed in the joint surface 23 or 24 and an insertion projection 20A is formed in the joint surface of the corresponding member. Various magnetic methods can be used, such as embedding permanent magnets 25 and 26 of different polarities on the joint surface as shown in Fig. 5, or attaching a Velcro fastener on the joint surface as shown in Fig. 5. It is. FIG. 6 utilizes the fact that there are spaces above, below, left and right of the guide groove. Reference numeral 27 denotes a pair of grip springs fixed to both sides or upper and lower surfaces of the fixed plug, and the distal bent portion 28 fits into a concave portion 29 formed on the surface of the connection plug.
Numeral 30 denotes a cylinder lock exposed on the outer surface of the front panel. The housing is preferably attached to the door lower frame 6 as shown in FIGS. Further, it is preferable that the fixing plug 21 is also fixed with a screw 22a so as to be adjustable in position from the bottom side to the upper part of the housing in the guide groove.

[0006] In the above device, for example, if the plunger malfunctions, the door 4 is opened as shown in FIG. 10 and the spring 17 is pulled out when the hammer 17 is pulled out.
0 is separated from the fixed plug 21 and the leaf spring 14 and the plunger 1
0 is drawn out of the housing as indicated by the chain line in FIG. To accommodate a new plunger or the like in the housing 9, the plunger is inserted into the accommodating portion 9A, and the connecting plug 20 is inserted into the guide groove 15 and the ejector 17 is pushed firmly into the connecting plug 20.
And the fixing plug 21 are connected. If it is desired to take out the housing 9, it is easy if the housing 9 is mounted in the manner shown in FIGS. 7 to 9, and if the position of the fixing plug 21 needs to be adjusted, the housing 9 may be mounted as shown in FIGS. If present, set screw 22a
Can be operated, so that work can be performed on site simply by removing the door body from the door frame.

[0007]

The device of the present invention has a simple structure, but can eliminate the need for uneconomical work which was indispensable in the event of a failure.
Inspection and maintenance work can be performed very easily while the door is installed.

[Brief description of the drawings]

FIG. 1 is a partial front view of a door.

FIG. 2 is a partial front view of the device.

FIG. 3 is an enlarged sectional view of a main part of a door lower frame.

FIG. 4 is a plan view illustrating an example of a connection unit.

FIG. 5 is a plan view of the magnet type connection means.

FIG. 6 is a plan view of the clip-type connecting means.

FIG. 7 is an essential part cross-sectional view showing a manner in which a housing is attached to a door lower frame, with a plunger removed;

FIG. 8 is an essential part cross-sectional view showing a mounting mode of a door lower frame, a housing, and a fixing plug.

FIG. 9 is an essential part cross-sectional view showing a mounting state of a door lower frame, a housing, and a fixing plug.

FIG. 10 is a plan view showing a state in which the plunger is removed.

[Explanation of symbols]

 1 Fixed column on the hanging side 2 Fixed column on the top of the door 3 Floor 4 Door 5 Door plate 6 Lower frame 7 Bottom 8 Adhesive device 9 Housing 10 Plunger 11 Set screw 13 Engagement pin 14 Leaf spring 15 Guide groove 16 Space 17 Child 18 Threaded rod 19 Slide plug 20 Connection plug 20A Insertion projection 21 Fixing plug 21A Fitting hole 22 Screw hole 22a Set screw 23,24 Joint surface 25,26 Permanent magnet 27 Clip spring 28 Bent part 29 Recess 30 Cylinder lock

Claims (3)

[Claims] 1. A plunger is accommodated in an inverted U-shaped housing embedded and fixed to a bottom surface of a door lower frame, and an intermediate upper portion of the plunger is suspended by a leaf spring supported at both ends by a guide groove in the housing. In the automatic floor contacting apparatus, the base side of the leaf spring is fixed to a slide plug that slides in the guide groove, and the front side is connected to a connection plug, and the connection plug is fixed in the guide groove. An automatic door floor close-contact device, which is detachably attached when a tensile force is applied to the fixed plug from the original side. 2. The automatic floor contact apparatus according to claim 1, wherein the housing is detachably fixed to a door lower frame from a bottom surface side. 3. The automatic floor contacting device according to claim 1, wherein the fixing plug is fixed to the guide groove so as to be adjustable in position.