JPH10238203A - Lower guide structure of door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly open and close a door by forming a guide groove in a lower part of the door or one of fixing members opposed to the lower part of the door, and freely longitudinally adjusting the position of a guide protrusion when the guide protrusion fitted into the guide groove is arranged in the other. SOLUTION: A screw shaft 27 whose axis is turned in the longitudinal direction is rotatably arranged in a casing 26 housed in the lower part of a sliding door 8 or the like. Next a pin-shaped guide protrusion 30 is protrusively arranged downward in a female screw body 29 fitted with the screw shaft 27. Next, a guide rail 34 having an upward opening guide groove 35 is fitted and installed into a pair of longitudinal fitting grooves 33 formed in a lower frame material 5, and the guide protrusion 30 is fitted into the guide groove 35 without almost longitudinal play. A door 8 warps, and the guide protrusion 30 strongly comes into contact with a front face or a rear face of the guide groove 35, and when the sliding door 8 is not smoothly opened and closed, the screw shaft 27 is rotated, and the guide protrusion 30 is moved to a position of not strongly coming into contact with front and rear surfaces of the guide groove 35. Therefore, a position of the guide protrusion can be easily adjusted, and even if the door warps, it can be smoothly opened and closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a door lower guide structure.

[0002]

2. Description of the Related Art Conventionally, the following are known as door guiding structures. That is, a sliding door provided with a total of four suspension wheels in the front and rear and left and right portions on each of the upper left and right portions, and a sliding door provided with guide projections including downwardly projecting pins and the like on the lower left and right portions is a suspension vehicle guide groove extending in the left and right direction. Along the upper frame member having the guide frame and the lower frame member having the guide groove extending in the left-right direction, that is, the suspension wheel formed on the front and rear edges of the suspension vehicle guide groove in a state where the suspension vehicle is fitted in the suspension vehicle guide groove. It is known that it is mounted on a support projecting piece, and a guide projection is fitted in a guide groove of a lower frame member so as to be movable left and right.

[0003]

Disadvantages of the prior art The conventional door lower guide structure has the following disadvantages. That is, when the sliding door is warped, the right and left guide projections strongly hit the front or rear surface of the guide groove, and the sliding door cannot be smoothly opened and closed (left and right movement).

[0004]

The present invention employs the following means to solve the above-mentioned drawbacks. According to the invention of claim 1, a guide groove extending in the left-right direction is formed on one of the lower part of the door and the fixed side member facing the lower part of the door, and a guide protrusion fitted to the guide groove is provided on the other side. In the lower guide structure of a door, the guide protrusion is provided on a member provided with the guide protrusion so as to be adjustable in the front-rear position.

[0005]

The first aspect of the present invention has the following functions. Even when the door is warped, the door can be smoothly opened and closed by adjusting the front and rear positions of the guide projection so that the guide projection does not strongly contact the front and rear surfaces of the guide groove.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In this description, “front” refers to the front side of FIG. 1, “back” refers to the back side, “left” refers to the left side in FIG. 1, and “right” refers to the right side in FIG.

The frame 2 attached to the entrance 6 of the room 1
Has a pair of left and right vertical frame members 3, an upper frame member 4 transferred to the upper ends of the vertical frame members 3, and a lower frame member 5 transferred to the lower ends of the vertical frame members 3. . The upper frame member 4 and the lower frame member 5
The left and right sliding doors 8 can be moved left and right along a vertical guide structure described in detail below.

First, the upper guide structure of the sliding door 8 will be described with reference to FIGS. A hanging wheel device 10 is provided at each of the left and right ends of the upper part of the sliding door 8. The hanging wheel device 10 includes an attached member 12 fitted in a recess 11 formed in an upper portion of the sliding door 8, and an attached member 12.
, A bearing member 14 provided at an upper end of the support shaft 13, and a front-rear end of a pair of axles 15 provided with the shaft center of the bearing member 14 in the front-rear direction. And a total of four suspension wheels 16 rotatably fitted to the vehicle. The upper frame member 4 is formed with a downwardly open fitting groove 19 extending in the left-right direction, and the upper guide rail 20 is fitted into the fitting groove 19, and the guide rail 20 is formed of a pair of front and rear openings that open downward. It has a hanging wheel guide groove 21. At the front and rear edges of the suspension wheel guide groove 21, suspension wheel support projecting pieces 22 are formed. The hanging wheel 16 is
It is mounted on the suspension vehicle support projection 22 in a state of being fitted in the suspension vehicle guide groove 21, and rotates and moves on the suspension vehicle support projection 22 as the sliding door 8 moves left and right. It has been done.

Next, a lower guide structure of the sliding door 8 will be described with reference to FIGS. In the left and right portions of the lower part of the sliding door 8, a recess 25 opened downward is formed.
A casing 26 whose upper part is open is housed therein, and a screw shaft 27 whose axis is directed in the front-rear direction is rotatably provided in the journal portion of the casing 26. The head 27a of the screw shaft 27 is exposed to the rear of the casing 26, and an opening 28 which escapes the head 27a is formed in the sliding door 8, and a driver engages the head 27a from behind the sliding door 8. The screw shaft 27 can be rotated in both forward and reverse directions. A female screw body 29 is screw-fitted on the screw shaft 27, and a guide projection 30 made of a pin projects downward from the lower part of the female screw body 29. The guide projection 30 extends in the front-rear direction formed on the bottom wall of the casing 26. The long hole 31 is fitted without play in the left-right direction.

With such a configuration, by rotating the screw shaft 27 in the normal or reverse direction, the position of the guide projection 30 can be changed back and forth.

The lower frame member 5 is formed with a pair of front and rear fitting grooves 33 which open upward in the left-right direction, and a guide rail 34 having a guide groove 35 opening upward in these fitting grooves 33 is fitted and stopped. Have been.

The guide projection 30 is fitted in the guide groove 35 with almost no play in front and rear. As is clear from this description, the guide rail 34 having the guide groove 35 constitutes a “fixed member facing the lower part of the door” in the claims. When the sliding door 8 is warped and the guide projection 30 strongly contacts the front or rear surface of the guide groove 35, the screw shaft 27
May be rotated to move the guide protrusion 30 to a position where the guide protrusion 30 does not strongly contact the front and rear surfaces of the guide groove 35.

[0013]

[Modifications and the like] Modifications and the like will be described below. (1) The guide protrusion 30 may be a plate-like piece that fits in the guide groove instead of the pin. (2) The door may be a sliding door or a folding door. (3) The upper guide structure of the door may be a structure in which the upper part of the door is simply fitted into the guide groove formed in the upper frame member 4 without the hanging wheel device 10. (4) The guide protrusion 30 may be provided on the lower frame member 5, and the guide groove 35 may be formed at a lower portion of the sliding door 8. (5) The mechanism for moving the guide projection 30 back and forth is not limited to the embodiment. (6) The guide groove 35 into which the guide protrusion 30 fits may be formed directly on the floor of the room 1 facing the lower part of the door. Further, a fitting groove 33 that opens upward in the left-right direction is formed in the floor portion of the room 1 facing the lower part of the door, and a guide rail 34 having a guide groove 35 that opens upward is fitted into the fitting groove 33. You may stop it. (7) FIGS. 5 and 6 show a modification of the lower guide structure of the sliding door 8. As shown in these figures, the left and right portions of the lower part of the sliding door 8 (the left means the front side of the paper surface of FIG. 5 and the right means the same back side) are below and behind (the rear is the left side of FIG. An open recess 25 is formed in the lower portion of the sliding door 8 so as to close the opening that opens downward and rearward of the recess 25. , And a screw shaft 27 whose axis is oriented in the front-rear direction is provided on the vertical wall 40 of the bracket 39 so as to be rotatable at its journal portion. A female screw body 29 is screw-fitted on the screw shaft 27, and a guide projection 30 made of a pin projects downward from the lower part of the female screw body 29. Is inserted into the long slot 31 without play in the left-right direction. With such a configuration, by rotating the screw shaft 27 in the normal and reverse directions, the position of the guide protrusion 30 can be changed back and forth. The guide projection 30 is fitted into a guide groove 35 formed in the floor surface of the room 1 and extending in the left-right direction with almost no play in front and rear.

[0014]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the present invention, even when the door is warped, the door can be smoothly opened and closed by adjusting the front and rear positions of the guide projection so that the guide projection does not strongly contact the front and rear surfaces of the guide groove. I can do it. According to the second aspect of the present invention, the position of the guide member can be adjusted by rotating the screw shaft, so that the position of the guide member can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a simplified front view showing an embodiment of the present invention, with an intermediate omission.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a vertical sectional view of a main part showing a modification of the present invention.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

[Explanation of symbols]

 5 Lower frame material 8 Sliding door (door) 30 Guide projection 35 Guide groove

Claims (2)

[Claims] 1. A door in which a guide groove extending in the left-right direction is formed in one of a lower portion of the door and a fixed-side member facing the lower portion of the door, and a guide protrusion is provided on the other side. A lower guide structure for a door, wherein the guide protrusion is provided on a member provided with the guide protrusion so as to be adjustable in a front-rear position. 2. A screw shaft having an axial center in the front-rear direction is rotatably provided on one of the lower part of the door and the fixed side member facing the lower part of the door, and a guide projection is provided on the screw shaft. 2. The lower guide structure for a door according to claim 1, wherein the female screw body is screw-fitted, and the front and rear position of the guide member is adjusted by rotation of the screw shaft.