JPH0332705Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a door roller attachment device that can be easily and reliably attached to and detached from a sliding door such as a shoji screen.

(Prior Art) As shown in Fig. 1, a door roller mounting device for a sliding door such as a shoji door has protruding flange B, B formed integrally with the housing A at the front and rear of the housing A. A cut window is provided in each of the front and rear walls of the housing A, and locking bullet plates C and C integrally formed from the housing A are provided in these portions.The locking bullet plates C and C are hook-shaped, and the The insertion direction side with respect to the lower stile forms a taper, and this step and the overhanging flange B,
B is the one that holds the lower web of the lower frame.
It is disclosed in Microfilm No. 52-121090 (Utility Model Application Publication No. 54-47250).

(Problem to be solved by the invention) However, the locking bullet plate integrally formed with the housing swings in an arc shape using its base end as a fulcrum, and crosses the taper to connect to the stepped part and the overhanging flange. The lower web of the lower stile is held in place by the lower web of the lower stile, and unless there is some space between the stepped part and the lower web of the lower stile, it will not be possible to cross the taper. Because of this, it cannot be installed firmly, and when the shoji is opened and closed, the door roller will tilt and the shoji will not open and close smoothly.Also, if the door roller is damaged, it is difficult to replace it with another one because the lower stile is narrow. At certain locations, the lock cannot be released unless both locking bullet plates are held, making removal of the door roller troublesome.

The present invention is a door roller mounting device that improves these problems, that is, a door roller mounting device that can be easily, reliably and firmly attached to and held on sliding doors such as shoji doors, and that can be easily removed for replacement. The purpose is to provide equipment.

(Means for solving the problem) In order to achieve this object, the door roller mounting device in the present invention has a box-shaped door roller outer frame 6 with an open bottom surface.
An engagement step 7 is formed by cutting out the lower part of the rear wall 6c, and a flange plate 8 having an upper step 8b, a lower step 8c, and a step 8a in between is protruded horizontally from the lower edge of the front wall 6b. This is because a locking piece 11 having an engaging protrusion 11b having a semicircular cross section that is compressively deformed on both sides by elasticity is erected on the surface of the upper step part 8b close to the step part 8a. This configuration solves the problem.

(Function) The present invention allows the door roller to be mounted reliably and firmly because both sides are elastically contacted and locked by the locking piece having a semicircular cross-section engaging protrusion that is elastically compressed and deformed. This locking piece is erected on the surface of the upper step near the step of the collar plate, which has an upper step, a lower step, and a step in between. The door roller can be easily removed.

(Example) An example of implementing the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 2 to 4, the door roller 1 has a top wall 6a, a front wall 6b, a rear wall 6c, left and right side walls 6d, 6e.
A box-shaped outer frame 6 having an open lower surface, an upper tier 8b and a lower tier 8c horizontally protruding from the lower edge of the front wall 6b, and a flange plate 8 with a tier 8a in between, and an upper tier. It consists of a locking piece 11 provided upright on the portion 8b. A wheel 10 is rotatably supported on an axle 12 inserted between the left and right side walls 6d and 6e of the door roller outer frame 6, and a stepped portion 7 is formed inwardly at the lower part of the rear wall 6c of the door roller outer frame 6. ing.

The lower stile 3 is connected to a horizontal intermediate wall 4 as shown in FIG.
The intermediate wall 4 connecting the side walls has a long hole 5 into which the door roller outer frame 6 of the door roller 1 can be inserted. A fitting hole 13 is bored into which a locking piece 11 provided on the flange plate 8 of the door roller 1 can be fitted.

In addition, in Fig. 3, 14 is a vertical stile (not shown).
This is a screw hole for attaching the lower frame 3 to the lower frame 3.

By the way, the upper step part 8 near the step part 8a of the collar plate 8
The locking piece 11 installed b is made of a single steel spring plate, and is bent symmetrically into a substantially U-shape with both ends facing upward, and the bent part 11a is fixed to the upper part 8b, Engagement protrusions 11b having a semicircular cross section and whose both side surfaces are elastically compressed and deformed are integrally stamped outward at both ends.

When attaching the door roller 1 to the lower stile 3 of a sliding door (not shown), the door roller 1 is placed close to the intermediate wall 4 of the lower stile 3, and the top wall 6a of the door roller outer frame 6 of the door roller 1 is inserted into the intermediate wall 4. Insert it into the hole 5 from below at a slight angle, and abut the stepped part 7 of the rear wall 6c of the door roller outer frame 6 on the screw screw hole 14, then insert the engaging protrusion 11b of the locking piece 11 of the door roller 1 in the middle. It is brought into contact with the fitting hole 13 of the wall 4.

Then, the engaging protrusion 11b, which has a semicircular cross section and which is elastically deformed on both sides, is compressed and deformed inward, and the engaging protrusion 11b is inserted into the fitting hole 1 from the upper side.
3, and then the engaging protrusion 11b is
Since both side surfaces are elastically compressed and deformed, they protrude outward from the fitting hole 13, and the base of the locking piece 11 comes into tight elastic contact with the fitting hole 13. Then door car 1
The stepped portion 7 provided on the rear wall 6c of the door roller outer frame 6 is brought into contact with and engaged with the screw threading hole 14 on the intermediate wall 4 with the frame 6 held horizontally.

In this way, as shown in FIG. 4, the door roller 1 has the upper surface of the upper step 8b of the collar plate 8 in contact with the lower surface of the intermediate wall 4, and the step portion 7 provided on the rear wall 6c of the door roller outer frame 6. engages on the screw threading hole 14 on the intermediate wall 4,
Furthermore, the locking piece 11 erected on the surface of the upper part 8b of the collar plate 8 is fitted into the fitting hole 13, and the lower part of the engaging protrusion 11b whose both sides are compressed and deformed by elasticity is It is securely attached to the lower stile 3 of the sliding door by being elastically engaged and locked onto the screw threading hole 14.

Next, to remove the door roller 1 from the lower stile 3 of the sliding door,
As shown in FIG. 4, the shaft of the driver 15 is inserted between the lower step 8c of the flange plate 8 and the lower surface of the intermediate wall 4 of the lower stile 3, and by rotating the driver 15 in the direction of the arrow, the stepped portion Since the locking piece 11 is erected on the surface of the upper part 8b near the upper part 8a, the driver 15
Since the rotational force directly acts on the engagement protrusion 11b,
The engaging protrusions 11b are compressed and deformed inwardly against the engaging protrusions 11b which are elastically compressed and deformed from the fitting hole 13 of the intermediate wall 4, and the engaging protrusions 11b are pushed down. The portion 11b is removed from the fitting hole 13. At this time, since the door roller 1 is tilted, the step 7 of the rear wall 6c of the door roller outer frame 6, which was engaged with the screw threading hole 14 on the intermediate wall 4 of the lower stile 3, is separated from the intermediate wall 4. At the same time, the door roller outer frame 6 is easily removed downward from the insertion hole 5 of the intermediate wall 4.

In this embodiment, a screw threading hole 14 is provided in the intermediate wall 4, but the same is true even if the screw threading hole 14 is not provided.

In addition to the locking piece 11 having the structure shown in FIG. 3, as an example, the locking piece 1 as shown in FIG.
A sleeve 16 is provided at the tip of the compression spring 1, and a compression spring 17 is installed inside the sleeve 16.
The engaging member 11b may be attached to both ends of the member 7 so as to be freely retractable.

Furthermore, as another embodiment, as shown in FIG.
It may be the locking piece 11 having b.

In addition, the locking piece of the present invention is not limited to the embodiments described above and shown in the drawings, but can be modified and implemented as appropriate without departing from the scope of the invention.

(Effects of the invention) The present invention is constructed as explained in detail above, and the door roller can be attached to the lower stile of the sliding door without the need for screws or tools. ,
Since a locking piece having a semicircular cross-section engaging protrusion that is elastically compressed and deformed on both sides is provided,
The engagement protrusion comes into elastic contact with the screw threading hole or the fitting hole,
Since it is locked, it can be easily installed, and it is also securely and firmly installed and held without wobbling. In addition, since the locking piece is erected on the surface of the upper part of the collar plate, which is adjacent to the upper part, the lower part, and the stepped part in the middle, when replacing the door roller, it is possible to The rotational force of rotating the part by the driver acts directly on the engaging protrusion which is compressed and deformed, so that removal can be easily performed with a single operation. This is a remarkable invention that is extremely practical.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing a conventional door roller, Fig. 2 is a schematic front view of a door roller showing an embodiment of the present invention, and Fig. 3 is an exploded perspective view of the lower stile and door roller showing an embodiment of the present invention. Figure 4 is a longitudinal front view of the lower stile showing the process of removing the door roller from the lower stile of the present invention, and Figures 5 and 6 are partial sectional views showing other embodiments of the locking piece of the present invention. It is. 1...Door wheel, 3...Lower stile, 4...Intermediate wall, 5...
...Insertion hole, 6...Door vehicle outer frame, 6a...Top wall, 6
b...Front wall, 6c...Rear wall, 6d, 6e...Right and left side walls, 7...Engagement step, 8...Flame plate, 8a...Step, 8b...Upper step, 8c...Lower step Part 10...
Wheel, 11...locking piece.

Claims (1)

[Scope of utility model registration request] The lower part of the rear wall 6c of the box-shaped outer frame 6 of the door car with an open bottom is cut out to form the engagement step part 7, and the upper step part 8b, the lower step part 8c, and the step in between are formed horizontally from the lower edge of the front wall 6b. A flange plate 8 having continuous portions 8a is formed protrudingly, and on the surface of the upper step portion 8b adjacent to the step portion 8a,
A door wheel mounting device in which a locking piece 11 having an engaging protrusion 11b having a semicircular cross section that is compressively deformed on both sides by elasticity is installed upright.