JPH0424053Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application] The present invention relates to a so-called flat sliding door device whose outer surface is flat on the same surface in the closed state.

[Conventional technology]

Conventionally, various so-called flat sliding doors have been proposed and put into practical use.

Due to the nature of sliding doors whose outer surfaces are flat when closed, at the beginning and end of the opening/closing operation of one sliding door, it is necessary to move diagonally to the back side of the other sliding door and then move in a straight line. In the prior art, various improvements have been made to this skew mechanism.

As conventional skewing mechanisms, there are known ones in which a skewing wheel and a skewing rail are provided on a sliding door or a stile, or a forced skewing mechanism is attached to the stile side.

[Problem that the invention attempts to solve]

However, conventional ones tend to have complex structures, lack durability, or tend to have excessive depth at the stile, requiring extra space for the stile installation. There is.

In addition, in order to simplify the structure, it has been proposed to use fixed wheels as both oblique wheels and straight wheels, and to improve the cross-sectional shape of the guide rail, but this requires a certain skill to open and close. However, there is a problem in that it is difficult to open and close with the same touch and feel as a regular sliding door.

Furthermore, conventional flat sliding doors of this type have the problem that they cannot be easily attached to and removed from a stile or rail due to the complexity of their traveling mechanism.

[Means for solving problems]

The purpose of this invention is to provide a flat sliding door device that does not have the problems of the conventional flat sliding door devices mentioned above, has a simple structure, operates reliably, and has sufficient durability. The structure consists of two sliding door bodies made by bending the peripheral edges of flat thin steel plates to form a planar wedge shape on the abutting sides, and a vertical direction near both widthwise ends of the back surface of each sliding door on the top and bottom sides. A bracket member supporting the shaft is attached, a bearing member whose position can be changed vertically with respect to the bracket member is attached to this bracket member with a screw, and a wheel mounting shaft having a wheel with a flange at the lower end is attached to this bearing member. Rotatable,
Moreover, while the sliding door is attached to be vertically slidable, the upper and lower stile to which both the sliding doors are attached are formed along a trajectory that the sliding door wants to draw during opening and closing operations, and the flange of the wheel is fitted and guided. It is characterized in that the rail having a concave cross section is divided into blocks of a central portion, a straight portion, and an outer end portion, and these rail blocks are connected.

[Effect of invention]

The running wheels with flanges, which are installed on both sides of the sliding door facing the upper and lower stiles, swing their heads while being guided by the rails. As a result, the front and rear wheels shake their heads.

Furthermore, since the rail that guides the wheels is a block body consisting of the center part of the stile, both outer ends, and an intermediate straight part sandwiched between these parts, the width of the stile depends on the width of the stile. By preparing different lengths, other parts can be shared.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

1 is a sliding door body in which the peripheral edge of a flat thin steel plate is bent to form the thickness of the sliding door, and the side that abuts with another sliding door is formed into a planar wedge shape 1a;
The figure shows the first sliding door viewed from the back.

Here, the two left and right sliding doors 1 have the same configuration except that the wedge-shaped portion 1a on the abutting side and the door stop side 1b are formed symmetrically, so the following will explain the sliding door 1. We will only discuss one sliding door.

In the sliding door 1 shown in FIG. 1, 2 is a bracket member attached to the four corners of the sliding door, and here, as shown in FIG. 2, it is composed of members 2a to 27b. There is.

Here, reference numeral 2a denotes a flat mounting board having a rectangular front surface, which is mounted at a predetermined location on the back surface of the sliding door 1 by spot welding. Reference numeral 2b denotes a bearing fitting having a substantially planar shape attached to the mounting board 2a, and has a shaft hole 22b formed in the upper protruding piece 21b, and a female screw block 23b formed in the lower part. This block 23b has a shaft hole 25b and a lock nut 26.
A bearing screw 24b having a diameter b is threaded.
Note that 27b is a screw hole for mounting the bearing fitting 2b. Of course, this hole 27b is unnecessary in the case of spot welding.

3 is a wheel mounting shaft mounted in the shaft holes 22b, 25b, and the lower end of this shaft 3 has a flange-equipped wheel 4.
A bearing bracket 4a is fixed thereto, and a mounting groove 3b for a ring washer 3a is formed in the upper part of the bearing bracket 4a.

In some cases, the upper end of the shaft 3 has its side surface cut to form a key surface 3c, as shown by the chain line in FIG.

The shaft 3 to which the flanged wheel 4 is attached has a shaft hole 25b.
The ring washer 3a is inserted into the shaft hole 22b from the side, and the ring washer 3a is fitted into the mounting groove 3b as shown in FIG. Metal fittings 2
Attach to b.

Incidentally, it is sufficient to provide this spring 3d only on the shaft 3 provided on the upper stile side.

Further, as shown in FIG. 3, the interlocking arm member 5, which has a hole shaped like the flat cross-section of the shaft in this part, is attached to the key surface 3c of the upper part of the shaft 3 protruding from the shaft hole 22b, inside the back surface of the sliding door. It may be inserted and fixed in the direction in which it protrudes.

When an interlocking arm member 5 is fixed to the upper part of each shaft 3, the distal end side of this member 5 is connected by a tie rod 6, so that the left and right wheels 4 can swing in parallel. Incidentally, in FIG. 3, 6a is a guide when the above-mentioned rod 6 is provided.

The flanged wheel 4 fixed to the tip of the shaft 3 in this manner is attached to the bearing fitting 2b so as to be rotatable about the shaft, vertically adjustable, and cannot be removed.

That is, when the wheel 4 rotates (oscillates) about the shaft 3, the shaft 3 rotates between the shaft hole 22b and the bearing screw 24.
This is done by loosely inserting it into the shaft hole 25b of b, and the vertical position can be adjusted using the bearing screw 24.
An arbitrary screw-in depth for the female thread block 23b of b and a lock nut 26 that fixes this depth.
This is done by the action of b. Further, the shaft 3 is prevented from coming off by a ring washer 3b.

Further, the spring 3d acts on the shaft 3 between the protrusion piece 21b and the washer 3a, and works to constantly push the shaft 3 toward the wheel 4 side. As a result, the flanged wheels 4 provided on the upper stile side of the sliding door 1 are always forced into contact with the rails provided on the upper stile, preventing the sliding door 1 from falling off the stile. To prevent. Also, this sliding door 1
When removing the stile from the stile, remove the upper wheel 4.
The sliding door 1 can be easily removed by pushing it downward against the repulsive force of the spring 3d, that is, by lifting the sliding door 1 upward.

In this way, the sliding door 1 that allows the front and rear flanged wheels 4 to swing in the running direction of the sliding door has the rails shown in FIG. 4 formed, and
Since it is installed as a flat sliding door on the lower stile,
Next, the configuration of the rails provided on the stile will be explained.

In FIG. 4, reference numeral 8 denotes rails connected and attached to the surface of the stile 7, including a central rail unit 81 provided at the center of the stile 7, and an outer rail unit 81 provided at both outer end sides of the stile 7. It consists of a unit 82 and a straight section rail unit 83 located between these units 81 and 82.

Therefore, each unit 81 to 83 has a sliding door 1.
Projections 81a to 83a are formed to guide the wheels 4, 4 with oscillating flanges, and the projections 81a to 83a are formed.
2a to 83a are formed with guide vertical walls 82b to 83b which form a concave cross section and fit and guide the flange 4a of the wheel 4.

On the other hand, the central rail unit 81 is provided with a movable protrusion 81d along with an auxiliary protrusion 81c linearly continuous to the protrusion 83a and a guide vertical wall 81b linearly continuous to the guide vertical wall 83b. It is being That is, when the flange 4a of the wheel 4 is located there, the movable protrusion 81d is parallel to the protrusion 81a on the rear end side, and is substantially convergently continuous with the protrusion 81a on the distal end side (as shown in FIG. 4). solid line),
When the above flange comes off from this part, the spring 8
1s, the movable protrusion 81d, which is a protrusion whose tip side rotates in a direction away from the protrusion 81a, is the shaft stopper 8.
1p is provided. Note that 84 is a screw hole for screwing each rail unit to the stile 7.

In the rail units 81 to 83, units 81 and 82 function as oblique guide sections when the sliding door 1 is opened and closed, and unit 83 functions as a straight guide section.

That is, when the left and right sliding doors 1 are now located in front of the stile 7, as shown by the dashed lines in FIG. 4, the left and right movable rails 81d are both in the positions shown by the solid lines in FIG. At this time, the back surfaces of both rails come into contact with the end faces of the auxiliary protrusions 81c and do not open any further.

Next, when the right sliding door 1 moves to the position indicated by the two-dot chain line in FIG. The left wheel 4 is forcibly guided to the oblique part without fail.

Here, even if the sliding door 1 moves to the left and is opened, the right wheel 4 of the sliding door 1 is adjusted so that it does not exceed the movable rail 81d. Assume that position 4 is set.

In addition, in the above-mentioned rail units 81 to 83,
Projections 81a and 82 provided on units 81 and 82
a. Similarly, the curvature and planar shape of the movable protrusion 81d and the vertical wall 82b are not the same. This is because the left and right flanged wheels 4 provided on the sliding door 1 swing independently.

Therefore, when the left and right wheels 4 are connected by the tie rod 6 as shown in FIG. become the same.

Further, although the flanged wheel 4 used in the above example had a single flange, the present invention may also use a dual flange type wheel or a combination thereof with a single flange type wheel.

In this case, the protruding portion over which the flange portion runs is formed by cutting the protruding portion of that portion.

Next, another example of the rail unit in the device of the present invention will be explained with reference to FIG. In FIG. 5, the same reference numerals as in FIG. 4 indicate the same members.

In the rail unit shown in FIG. 5, the configuration of the central rail unit 81 is different from that shown in FIG. 4, so this point will be explained.

That is, in this unit 81, the guide vertical wall 81b' is bent toward the inside of the stile and symmetrically with a relatively small curvature across the center C of the stile, and the auxiliary protrusion 81c' is also bent toward the inside of the stile. 81
The curvature is approximately parallel to b′.

On the other hand, the portion corresponding to the movable protrusion 81d in FIG.
1c', and the protrusion 81a' is formed with a curved surface corresponding to the vertical wall 81b' and the fixed protrusion 81d'.

The central rail unit 81 was formed in this way by forming a point 8c at the center C of the guide vertical wall 81b' in this unit, and by forming a point 8c at the center C of the stile when opening and closing the door. This is to make the point 3 act as a point whose direction is not changed. In particular, the flanged wheels 4 that have traveled on the straight traveling section when the door is closed are
After being swung slightly in the opposite direction, the wheel always passes through this point 8c and proceeds on the oblique section, so this wheel will not accidentally enter the straight section on the opposite side.

[Functions and effects of invention]

In this invention, the flanged wheels provided on the upper and lower surfaces of the sliding door 1 (the surfaces on the side that the stile touches) swing their heads near both ends of the sliding door, so the rails formed on the stile are Even if a desired diagonal pattern is formed to create a locus to be drawn, the left and right wheels can easily trace it. In particular, when the support shafts of the left and right wheels are connected with a connecting rod, the diagonal parts of the left and right sliding doors intersect with each other in the center rail unit installed in the middle of the stile. Even if a part of the rail is cut off so as not to interfere with the
Due to the characteristic that the left and right flanged wheels interlock in parallel, reliable skew movement can be realized. On the other hand, if the flanged wheels are made to swing independently on the left and right sides of one sliding door, a special rail pattern as shown in Fig. By forming the wheel in an arc shape and forming the left and right arc parts so as to intersect with each other, the flange of the flanged wheel will not accidentally enter the other rail side at this oblique part. , you can travel while tracing the rail pattern well. Therefore, the rail pattern of the central rail unit where the diagonal sections of the left and right sliding doors intersect can be made so that each wheel of the left and right sliding doors is unlikely to accidentally enter the rail on the other side.

In addition, the wheels 3 of the wheels 4 on the upper stile side are made to be able to slide a minute amount in the axial direction within the shaft holes 21b and 25b by applying a spring 3d, so that the flat sliding door can be attached and detached by a so-called one-touch operation. be able to.

Furthermore, the present invention has a unit structure in which the rails provided on the stile are formed separately corresponding to the central part, both outer ends, and the middle part of the stile, and the rails are integrated by connecting these parts. Therefore, for example, if you want to accommodate the size of the frontage of a stile (the sliding door will also be correspondingly large or small), by changing the length of the middle rail unit, you can use the other rail units as they are. , contributes to a reduction in the number of parts.

In addition, the sliding door device of the present invention has an upper and lower stile, a pair of left and right side frames that integrate these two stile as a frame, and two sliding doors attached to this frame, so that it can be used as a so-called flat sliding door. Since it can be easily constructed into a unit, it can be conveniently incorporated into box-shaped furniture with an open front as a flat sliding door device by so-called retrofitting.

Therefore, the flat sliding door device of the present invention is extremely useful especially when installed in sliding door type cabinets having various widths.

[Brief explanation of drawings]

Fig. 1 is a rear view of an example of the sliding door of the present invention, Fig. 2 is an enlarged rear view of the running wheel section, Fig. 3 is a plane sectional view showing the main parts of another example of the sliding door, and Fig. 4 is an example of the stile. A plan view of the right half, FIG. 5 is a plan view of the right half of another example of the stile. 1... Sliding door, 2... Bracket member, 3...
Shaft, 4... Wheel with flange, 5... Interlocking arm member,
6...Tie rod, 8...Rail, 81, 82, 8
3...Rail unit.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. On the upper and lower sides of two sliding door bodies whose abutting sides are formed by bending the peripheral edges of flat thin steel plates into a planar wedge shape, near both ends in the width direction of the back surface of each sliding door. A bracket member supporting a shaft in a vertical direction is attached, a bearing member whose position can be changed up and down with respect to the bracket member by screws is attached to this bracket member, and this bearing member has a wheel with a flange at the lower end. While the wheel mounting shaft is rotatably and vertically slidable, the upper and lower stiles to which both the sliding doors are attached are formed along the trajectory that the sliding door wants to draw when opening and closing, and the wheels are attached to the upper and lower stile. A flat sliding door device characterized in that a rail having a concave cross section on which a flange is fitted and guided is divided into blocks at a central portion, a straight portion, and an outer end portion, and these rail blocks are connected. 2. The flat sliding door device according to claim 1, wherein the wheel mounting shaft on the upper stile side of the sliding door is constantly subjected to a pushing force toward the upper stile side by a spring. 3. The rail in the central rail block is a flat rail according to claim 1 or 2 of the utility model registration claim, in which a curvature is applied to the straight rail portion continuous with the oblique rail portion where the flanged wheel runs obliquely. Sliding door device. 4. The flat sliding door device according to claim 1 or 2, wherein the left and right wheel mounting shafts of one sliding door are connected by a tie rod member. 5. The rails in the central rail block are described in paragraph 1 or 2 of the utility model registration claim, in which a part of the rail in the part where the flanged wheel runs obliquely is a movable rail that is opened and closed by the repulsive force of a spring. flat sliding door device. 6. A flat sliding door device according to any one of claims 1 to 5 of the utility model registration claim, in which the upper and lower stiles are connected on both sides by frame members.