JPH0712603Y2 - Door roller fixing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a fixing mechanism for a door roller, which can be favorably attached and fixed to a storage unit such as a lower frame of a sliding door sash.

<Problems to be solved by conventional techniques and devices> Conventionally, when attaching and fixing a door roller to a storage unit such as a lower frame of a sliding door sash, a leaf spring-like hanging plate bent in a substantially U-shaped cross section is used. , The outer frame that holds the wheels is hung on the outer side with the open end facing down, and the tip of the hanging plate bent outward is hooked on the lower end of the side wall of the lower frame. One that is installed so that the door roller is not buried in the frame storage part (see, for example, Japanese Utility Model Publication No. 51-9791), or a screw shaft is projected from the upper surface of the outer frame, and this screw shaft is attached to the partition wall above the frame. There is known one in which the door roller is prevented from being buried in the frame storage portion (for example, see Japanese Utility Model Laid-Open No. 55-74371).

However, in the case where the bent tip of the hanging plate is hooked on the lower end of the lower frame and attached and fixed, when the sliding door is heavy or the opening and closing operation is performed violently, this tip portion is the lower end of the side wall of the lower frame. There was a bad effect that the door car got out of the room and was buried in the storage part of the frame.

Also, the latter one was able to withstand the weight of the sliding door and there was no risk that the door roller would be buried in the storage part even with a heavy opening / closing operation, but the so-called point contact in which the screw shaft was brought into contact with the partition wall surface. Since it has a general holding structure, there is a problem in that the door roller is left and right in the storage portion, the wheels are inclined and it is difficult to smoothly open and close the sliding door. Especially when the frame storage part is deep and the partition wall is high, it is necessary to project a very long screw shaft from the upper end of the door roller to hold the door roller inside the frame wall storage area. Met.

Some of them tried to adjust the degree of expansion of the expansion piece in the storage part by connecting a pair of expansion pieces with an adjusting screw and adjusting the screws, but it requires space and adjustment operation. Is troublesome, and sometimes it does not expand well in the storage part, and there is room for improvement due to high cost (for example, Japanese Utility Model Application No. 1-
See 6332).

This device was devised in view of the above-mentioned problems of the conventional door roller, and it is possible to prevent the door roller from being buried in the frame housing portion, and there is no grind on the left and right, and to the frame housing portion of various depths. It is an object of the present invention to provide a cost-effective and inexpensive door roller fixing mechanism in which the door roller can be easily attached and the fittings such as sliding doors can be opened and closed satisfactorily for a long period of time.

<Means for Solving the Problem> The configuration of the door roller of the present invention for solving the above-described object is to provide a door roller fixing mechanism attached to a door roller housing portion such as a lower frame, in which the outer frame body of the door wheel On the outer surface of the side wall at right angles to the traveling direction, there is provided a pair of expansion pieces that can contact the inner wall surface of the door roller storage part, and the pair of expansion pieces share the through-hole portion formed at the base end. It is supported by the holding shaft of
The through-hole portion is provided with a spring member that acts on the pair of expansion pieces in the expansion direction with the holding shaft as a fulcrum, and the pair of expansion pieces can be expanded freely according to the width of the storage portion. is there.

<Operation> According to the door roller having the above-described configuration, the pair of expansion pieces provided on the outside of the side wall of the outer frame body at right angles to the traveling direction of the wheels has the through-hole portion formed at the base end portion as a common holding shaft. In addition to being supported by a spring member that is expanded by using a holding shaft as a fulcrum, a pair of expansion pieces are provided in the through-hole portion, so that it can be freely adjusted according to the width of the door roller storage part such as the lower frame. Since it expands and contacts the inner wall surface of the storage part, you can adjust the expansion width of the expansion piece according to the width of the storage part and push it into the storage part to bring the expansion part into contact with the inner wall surface of the storage part. The position of the door roller can be fixed in the storage part.

<Embodiment> Next, an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a perspective view of the door roller T of the present invention as seen from below.

As is apparent from the cross-sectional view shown in FIG. 2 and the like, the door roller T accommodates a holding body 2 rotatably supporting a wheel 1 in an outer frame body 3 and has a protruding portion 21 which is a part of the holding body 2. Through hole of the outer frame 3
It fits in 31 and is pivotally supported. The pivot position is offset from the pivot position of the wheel 1.

The holding body 2 is provided with a rotary shaft 4 in which a threaded portion 41 formed of a female screw is formed orthogonally to the shaft center in the front-rear direction.

An adjusting screw shaft 5 is rotatably provided on the lower surface side of the outer frame body 3 so that the head 51 is exposed. The male screw of the adjusting screw shaft 5 is screwed into the female screw of the rotating shaft 4.

By rotating the adjusting screw shaft 5, the position of the wheel 1 can be adjusted up and down while the holder 2 is turned around the pivot portion.

As described above, the adjustment screw shaft 5 has a head portion 51 on the lower surface side of the outer frame body 3.
Is to be exposed, but the head of the screw shaft 5
A protrusion 52 provided inside 51 and a stopper 32 of the outer frame body 3 provided at a position above the shaft tip of the screw shaft 5 are formed so as not to be completely pulled out in any of the upper and lower directions.

Next, reference numerals 6 and 6'indicate open portions which are attached to the side walls 33a and 33b of the outer frame 3 in the front-rear direction perpendicular to the traveling direction of the wheels 1.

As shown in FIG. 7, the expanding portions 6 and 6 ′ are composed of expanding pieces 60 and 60 ′ each formed of a pair of metal plates and a flat plate-shaped intervening plate 7.

The expanding pieces 60, 60 'are each formed in a sharp tapered shape on the rotating tip 61b side, and are overlapped on the base end 61a side and are pivotally supported by a holding shaft 62. 60,6
Through hole 72 in which holding shaft 62 supporting 0'is formed in intervening plate 7
It is attached to the intervening plate 7 so as to be able to open and close with each other by being inserted and fixed.

In FIG. 7, reference numeral 8 denotes a U-shaped spring member whose one end side is formed slightly longer than the other end.
The insertion end of the holding shaft 62 is inserted into the through hole for inserting the holding shaft 62 on the side of the base end portion 61a, and the one end of the elongated shape is stopped at one of the expanding pieces 60 'as well as the insertion of the holding shaft 62 into the through hole. The other end side is fixedly held by the other expansion piece 60.

The spring member 8 has a function of constantly expanding the expansion pieces 60, 60 'with the base end portion 61a side of the expansion pieces 60, 60' as a fulcrum, and the expansion pieces 60, 60 'are adjusted to the width of the storage portion. By pushing the spring member 8 in a narrowed state against the spring member 8, the expansion pieces 60, 6
0'can be brought into contact with the inner wall surface of the storage portion.

As shown in FIG. 7, the intervening plate 7 has the expanding pieces 60, 60 '.
In addition to the through hole 72 for fixing the shaft to the holding frame 62, the interposing plate 7 is further fixed to the outer frame 3 with the mounting screws 9 as shown in FIG.
Mounting holes 73 for inserting the screws 9 to be mounted on the side walls 33a, 33b, and fitting projections 74a, 74b formed by bending both ends of the short side at substantially right angles in the same direction.

The fitting protrusions 74a, 74b are fitted to fitting step portions 35a, 35b formed on the upper and lower ends of the side walls 33a, 33b of the outer frame body 3, respectively, so that the interposition plate 7 can be rotated with respect to the outer frame body 3. It is to prevent it.

Further, on the side walls 33a, 33b of the outer frame body 3, screw holes 34a, 34b are respectively formed at upper and lower two places as shown in FIG. 4, and these screw holes 34a, 34b are formed on the interposing plate 7 as described above. Mating ridge 74
When the a and 74b are fitted to the mating stepped portions 35a and 35b respectively, or the intervening plate 7 is half-turned to fit the mating protrusions 74a.
Regardless of whether the fitting step portion 35b is fitted to the fitting step portion 35b and the fitting projection 74b is fitted to the fitting step portion 35a, the mounting hole 73 of the interposing plate 7
It is formed so that the mounting screw 9 inserted in the can be screwed.

Next, 10 is a spring plate-shaped mounting plate that is mounted on the outer surface of the outer frame body 3. The hanging plate 10 is made of a spring-like thin plate which is entirely elastic and is bent into a substantially U-shape. The hanging pieces 11a and 11b are hung on both side portions 36a and 36b of the outer frame body 3, respectively. There is. The hooking pieces 11a, 11b are expanded outward as they go downward, and the lower end portions 12a, 12b are bent inwardly in a small V shape, as shown in FIGS. 5 and 6. Thus, when the door roller T is attached to the door roller housing portion D of the lower frame, the lower ends 12a and 12b are brought into contact with each other by the elastic repulsive force.

Regarding the fixing mechanism of the door roller T having the above-described structure, a method of attaching the door frame to the lower frame storage portion will be described. First, the depth of the lower frame storage portion D to be attached is the fifth.
When the depth is shallow as shown in the figure, the fitting protrusions 74a of the interposition plate 7 are
74b are fitted into the fitting step portions 35a, 35b, respectively, and the mounting screws 9 inserted through the mounting holes 73 of the interposing plate 7 are attached to the outer frame 3
The expanded portions 6 and 6'are attached to the outer frame body 3 by being screwed into the screw holes 34a. Then, the expansion pieces 60, 60 'of the expansion portions 6, 6'
Is in a state of being narrowed against the spring member 8, and the storage unit D of the lower frame is
Insert it into the housing, and the sharp tip of the expansion piece 60, 60 '
Push it in until it touches the corner of the upper partition wall.

Next, when it is attempted to attach and the depth of the storage portion D of the lower frame is deeper than the above as shown in FIG. 6, the interposition plate 7 is half-turned from the above, and the fitting protrusion 74b, 74a is fitted in correspondence with the fitting step portions 35a, 35b, respectively, and the mounting screw 9 inserted into the mounting hole 73 of the interposition plate 7 is screwed into the screw hole 34b side of the outer frame body 3 to expand. The openings 6 and 6'are attached to the outer frame body 3 and the expansion pieces 6 and 6'of the expansions 6 and 6'are similarly provided.
The 0, 60 'is narrowed against the spring member 8 and is inserted into the frame storage section D, and the sharp tapered tip of the expanding piece 60, 60' is brought into contact with the corner portion of the partition wall surface of the storage section D. Push in.

In any of the above cases, the lower end portion 12 of the hooking pieces 11a, 11b.
By the elastic repulsive force of a and 12b, the door roller T can be stopped in the lower part of the storage portion D, and at the same time, the rotating tip portions 61a and 61b of the pair of expansion pieces 60 and 60 'are moved to the door roller. It can be pressed against the upper surface of the housing portion D, and the door roller T can be favorably fixed in position in the housing portion D.

And in any of the above cases, the adjustment screw 5
By rotating the wheel, the wheels can be adjusted up and down, the height of the wheels can be adjusted to the best condition, and the door roller T can be easily mounted in the frame storage section having various depths, and fittings such as sliding doors can be installed. It is possible to open and close the satisfactorily for a long time.

In the above embodiment, a pair of expanding pieces 60, 6 are used as the expanding portion.
0'is shown, but as shown in FIG. 8, a pair of expanding pieces 60, 60 'having base end portions attached to each other are provided at the top and bottom, and attached to the interposing plate 7', and attached. Tooth part
The expanding portion 6 ″ is formed by forming the 63 so that the upper and lower expanding pieces 60, 60 ′ cooperate with each other, so that the expanding piece can be formed not only on the upper portion of the housing portion D of the frame but also on the lower end portion of the side wall. In the case where the pair of expansion pieces are provided above and below, the expansion pieces expand in a substantially X shape in the door roller accommodating portion D, so that the door rollers can be connected to each other. This is preferable because it can firmly fix the position.

Further, instead of the stopper 32, the outer frame body is sandwiched by the protruding portion of the screw shaft formed on the inner side of the outer frame body and the caulking expansion portion formed on the outer side, so that the adjusting screw shaft can be completely removed from both the upper and lower sides. It may not be provided.

Further, in the above embodiment, the rotating shaft 4 has a solid shape, but it may be formed in a pipe shape having slits formed in the longitudinal direction. Various other design changes can be made within the scope without changing the gist of the present invention.

<Effects of the Invention> According to the door roller having the above structure, a pair of expanding pieces provided on the outside of the side wall of the outer frame body at right angles to the traveling direction of the wheels are expanded with the holding shaft at the base end as a fulcrum. By using the spring member that opens, it can be expanded in the door frame storage part such as the lower frame and can be brought into contact with the inner wall surface of the storage part, preventing the door car from being buried in the frame storage part, and with a left and right graph Disappears. Further, since the expansion piece is configured to be freely expanded by a spring member in the door frame storage part such as the lower frame according to the width of the storage part, the expansion piece can be adjusted in accordance with the width of the storage part. If the expansion width is adjusted and pushed into the storage part, it can be easily brought into contact with the inner wall surface of the storage part. No complicated expansion adjustment means is required for the expansion piece, and it does not take up much space and is simple. With the configuration, the door roller can be easily fixed in position inside the storage unit such as the lower frame,
There is also an advantage that it can be provided at low cost, and it is highly practical.

[Brief description of drawings]

 1 is a perspective view, FIG. 2 is a sectional view, FIG. 3 is a sectional view taken along line III-III of FIG. 1, and FIG. 4 is a partially exploded perspective view. 5 and 6 are side views showing a mounted state, FIG. 7 is an enlarged exploded perspective view of an essential part, and FIG. 8 is an enlarged side view of an essential part showing a modified example. T ... Door D ... Door storage 1 ... Wheel 2 ... Holder 3 ... Outer frame 33a, 33b ... Sidewall 5 ... Adjustment screw shaft 6,6 ', 6 "... Expansion 60 , 60 '…… Expanding piece 62 …… Holding shaft

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A door roller fixing mechanism, which is attached to a door frame storage portion such as a lower frame, wherein an outer frame body of the door roller has a side wall outer surface perpendicular to the traveling direction of the wheels, and an inner wall surface of the door roller storage portion. A pair of expanding pieces that can be contacted is provided, and the pair of expanding pieces support the through-hole portion formed at the base end portion with a common holding shaft, and the pair of expanding pieces in the through-hole portion. A fixing mechanism for a door roller, characterized in that a spring member is provided that acts on the holding shaft as a fulcrum in an expanding direction, and the pair of expanding pieces can be expanded freely according to the width of the storage portion.