JPH0727338Y2 - Movable partition door lower runner - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lower runner of a movable partition that is movably provided between an upper rail and a lower rail via a runner.

[Conventional technology]

In a movable partition door in which a plurality of doors are installed side by side (hereinafter abbreviated as appropriate), for example, as shown in FIG. 6, one end of the rail 2 has a substantially U-shaped branch to accommodate the door when the partition is opened. A letter-shaped storage portion 70 is formed so that the door 6 can be stored in a posture that is substantially orthogonal to the posture during traveling. In this case, the support structure is simply attached to the upper rail 2 via the upper runner 8, and the structure is designed to engage and disengage between the door 6 and the floor surface in order to obtain a fixed state when the door 6 is closed. Complicated lock mechanism is provided.

Further, in folding doors, the lower runner has, for example, a shaft pin structure fixed to the lower surface of the door and having a fixed length that can be engaged in the groove of the lower rail, or is embedded and fixed in the lower part of the door. It is known that a case member and a shaft pin-shaped runner body mounted on the case member via a spring. In the latter case, the amount of protrusion of the runner body is adjusted by the biasing force of the spring in response to the change in the distance from the lower rail.

[Problems to be solved by the device]

By the way, with the lock mechanism as described above, only the fixed state of the door at the closed position can be obtained, and the lower end becomes free during the movement at the time of opening, so that the swinging and the smooth movement cannot be obtained. Further, since most of the lock mechanism is provided inside the door, the manufacturing cost is high, and when installing the lock mechanism, the construction technology of a specialist is required, and thus the construction cost is increased as a whole.

Further, the conventional lower runner as described above may cause inconvenience. That is, in this type of movable partition door, the door contact surface is not actually perpendicular to the floor surface, or the parallelism between the upper rail and the lower rail is not perfect. For example, as shown in FIG. 7, when the door-contact surface F is inclined by α ° from the vertical line V with respect to the lower rail 4, the door 6 is attached according to the door-contact surface F.
By adjusting the upper runner 8, the side opposite to the door contact surface F is lowered by the dimension d. Adjacent doors 6 are similarly attached. In this case, the runner mounting positions P ₁ , P _{2 of the} door 6
Spacing G _1, G ₂ of the lower surface and the groove bottom surface of the lower rail 4 In, G ₁ of doorstop face F side is dimensioned d minute large state contrary to the upper surface side. When the door 6 is moved to the storage section 12 in this state, the door 6 is held parallel to the wall surface as shown in FIGS.
The lower runner 72 is in a state of floating in the upper rail 2 and the lower rail 4 by the dimension d ₁ (d ₁ <d). Since the lower runner is free in the longitudinal direction of the lower rail 4 in the storage section 12, when it is pushed and stored by hand, the door 6 rotates around the upper runner 8 in the arrow X direction and the lower runner moves from the lower rail 4. Easy to come off. When the lower runner is disengaged, the upper runner 8 that was in a floating state returns and the door 6 swings as shown by the chain double-dashed line in FIG. I can't. In this case, it is necessary to rotate the door 6 again in order to return the engagement, and when the door 6 is large, an extremely large amount of labor is required. For this reason, it is preferable that the amount of engagement of the lower runner with respect to the lower rail 4 is as large as possible. However, when the length of the lower runner 72 of the conventional fixed structure is increased, the displacement of the door 6 shown in FIG. One side contacts the bottom surface of the lower rail 4 and the door 6 cannot be attached. Further, in the lower runner 74, which is structured so as to project by the biasing force of the spring, the runner main body projects to the maximum outside with the door 6 swinging, so that it requires more work to restore the engagement and the runner Since the tip of the main body constantly presses the groove bottom surface of the lower rail 4, smooth running cannot be obtained.

In addition, in this type of lower runner, contact friction between the runner side part and the lower rail is large in order to prevent rattling, but in the above runner there is no or insufficient measures to reduce friction, It was causing early wear of the runners.

In this invention, the distance between the upper rail and the lower rail can be adjusted arbitrarily according to the deviation of the parallelism between the upper rail and the lower rail, and the deviation of the verticality of the door contact surface. Its purpose is to provide a lower runner that can improve operability.

Another object of the present invention is to provide a lower runner of a movable partition door which can reduce contact friction with a lower rail and thus can prolong the service life.

[Means for Solving the Problems]

The present invention was created in view of the above circumstances, and is characterized by having a cylindrical casing that is embedded and fixed in a dug hole in the lower part of the door in the vertical direction of the door, and a screw shaft extending in the vertical direction of the door. An operating member provided in the cylindrical casing so that the screw shaft can be rotated from the outer surface of the door, and a screw shaft of the operating member that is screwed to move the door in the vertical direction by screwing adjustment by the above operation. A runner body, and the runner body is formed into a two-layer structure of a screw member screwed to the screw shaft and prevented from rotating by the cylindrical casing, and an outer layer of synthetic resin and an inner layer of metal. And an engaging member which is rotatably fitted to the screw member with the vertical direction of the door as an axial center and whose lower end is engaged with the groove of the lower rail.

Further, the present invention is characterized in that a spherical body is interposed on the fitting surface between the screwing member and the engaging member.

[Action]

According to this invention, the operating member is operated from the outer surface of the door in response to the deviation of the parallelism between the upper rail and the lower rail and the deviation of the verticality of the door contact surface. The screw shaft of the operation member is rotated by the operation, and the screwing member of the runner body moves in the vertical direction of the door according to the amount of rotation of the screw shaft. The engaging member moves in the same direction as the screwing member moves. The gap with the lower rail is adjusted by the movement of the engaging member. When the door moves, the engaging member rotates about the vertical direction of the door due to friction with the lower runner, and the frictional force is relieved. Further, the outer layer of synthetic resin reduces the friction with the lower rail, and the inner layer of metal maintains the strength against the contact pressure with the lower rail.

Further, according to the present invention, the spherical body alleviates the rotational friction between the screwing member and the engaging member, thereby further reducing the friction between the lower runner and the engaging member.

〔Example〕

 1 to 5 show an embodiment of the present invention.

This is an example of a sliding door, and a plurality of doors 6 are interposed between an upper rail 2 and a lower rail 4, which are installed above and below the door frame and have a substantially C-shaped cross section, via an upper runner 8 and a lower runner 10, respectively. It is provided so that it can be moved. A storage portion 12 for storing each door 6 at the time of partition opening is formed at the same side end portion of the upper rail 2 and the lower rail 4. The storage unit 12 is
Each of the upper rail 2 and the lower rail 4 has an extension portion 2a, 4a, and each of the upper rail 2 and the lower rail 4 has a substantially L-shaped branch portion 2b, 4b. When the door 6 is moved to the vicinity of the storage portion 12, the upper runner 8 and the lower runner 10 on the storage direction side are guided to the branch portions 2b and 4b, and are stored in a state substantially perpendicular to the movement of the single line portion.

In this example, each upper runner 8 is composed of a runner body 16 with a guide shaft having a screw shaft at the lower portion, and a support member 18 having a screw shaft screwing portion and fixed to the door 6.

The lower runner 10 has a digging hole 20 formed in the lower surface 6a of the door 6.
A cylindrical casing 22 that is embedded and fixed in the
An operating member 24 provided inside the door 22 and operated from the outer side surface of the door 6
And a runner body 26 screwed to the operating member 24. The runner body 26 moves in the vertical direction of the door 6 by operating the operation member 24.

The cylindrical casing 22 is roughly composed of a head portion 28 and a body portion 30. The head portion 28 is formed in a split structure of a main body head piece 32 and a divided head piece 34 that matches the main body head piece 32. A support portion 36 that supports the screw shaft 44 of the operation member 24 is formed on the bottom surface portion of the head portion 28, and the screw shaft 44 is supported on the support portion 36.
An insertion hole 36a for inserting the through hole is formed. Split head piece 34
Comprises a split piece body 38 and a closure surface 40. Blocking surface
An engaging convex portion 40a is formed on 40, and an engaging receiving portion 32a is formed on the main body head piece 32 correspondingly. Further, the split piece main body 38 is formed with an insertion hole 38a for setting the rotating member 46 of the operating member 24, and a recess 38b that engages with the outer peripheral end of the support portion 36. It should be noted that the periphery of the insertion hole 38a inside the divided piece body 38 is surrounded by the rotating member
Is formed on a flat surface for stable setting. The divided head piece 34 is engaged with the main body head piece 32 and then integrated with an adhesive or the like. Screw insertion holes at both ends on both lower surfaces of the body 30
A mounting piece 40 having 40a, 40a is formed, and a set screw 4
It can be attached to the lower surface 6a of the door 6 by 2. Also. The inner surface of the body portion 30 is formed with a guide groove 30a that also serves as a rotation stopper and a movement guide for the runner body 26 during operation.

The operation member 24 includes a screw shaft 44 set on the main body side of the cylindrical casing 22 and a rotating member set on the divided head piece 34 side.
It consists of 46 and. For converting the operating force, for example, a bevel gear configuration can be used, and the screw shaft 44 is the screw shaft main body 44a.
And a bevel gear 44c fixed to the upper end of the screw shaft 44a via a base 44b, while the rotating member 46 is
Bevel gear 46a that meshes with bevel gear 44c and insertion hole 38a
And a base portion 46b set to Split head piece 3
The bevel gear 44c of the screw shaft 44 and the bevel gear 46a of the rotating member 46 are engaged with each other while the 4 is fitted in the main body head piece 32. In addition, a groove or a recess for rotating with an operating tool such as a driver is formed on the end surface of the base portion 46b of the rotating member 46. An operation hole 48 for inserting an operation tool is formed on the side surface of the door 6 in correspondence with the position of the rotating member 46, so that the operation member 24 can be operated from the outside of the side portion of the door 6. There is.

The runner body 26 includes, for example, a screwing member 50 that is screwed into the screw shaft 44 of the operating member 24, and an engaging member 52 that is rotatably provided on the screwing member 50 with the vertical direction of the door 6 as an axis. can do. The screwing member 50 includes a screwing main body 54 and an engaging member.
The engaging member 52 includes a cylindrical portion 58 into which the screw main body 54 is fitted, and an engaging portion 60 to be engaged with the lower rail 4. Has become. The tubular portion 58 has an outer diameter that allows it to slide closely inside the cylindrical casing 22.

The screw main body 54 has a screw hole 54a axially screwed into the screw shaft 44 of the operating member 24, and an annular recess 54b formed on the outer periphery. Further, an engagement piece 54c that engages with the guide groove 30a of the cylindrical casing 22 is formed at the upper end, and a protrusion piece 54d is formed at a position facing the engagement piece 54c. The engaging piece 54c is the engaging member 52.
The protruding portion 54d is formed to have a length that protrudes from the outer peripheral end of the cylindrical portion 58, and the protruding piece 54d has a length that does not protrude from the outer peripheral end. On the other hand, on the inner peripheral surface of the tubular portion 58, the annular recess 5 corresponding to the annular recess 54b of the screw main body 54 is formed.
8a is formed. The sphere 56 is inserted into the threaded main body 54 through a hole 58b formed on the side of the cylinder 58. As a result, the screwing main body 54 and the tubular portion 58 are prevented from coming off, and the engagement member 52 rotates smoothly with respect to the screwing main body 54. At the upper end of the engaging portion 60, a collar portion 60a that fits into the lower recess 58c of the tubular portion 58 is formed. Further, the engaging portion 60 has an insertion hole 60b through which the screw shaft 44 of the operation member 24 is inserted in the axial direction, and is formed in a two-layer structure of an outer layer 60c of synthetic resin and an inner layer 60d of metal. Outer layer of synthetic resin 6
By 0c, the friction caused by the contact with the lower rail 4 which is usually made of a metal material is alleviated, and an unpleasant contact sound is avoided. Further, the inner layer 60d of metal enhances the strength against the contact pressure with the lower rail 4.

Next, the operation of vertical adjustment by the lower runner 10 will be described.

As shown in FIG. 3, for example, when the door contact surface F with respect to the lower rail 4 is inclined by α ° from the vertical line V with respect to the lower rail 4, the engaging member 52 of the lower runner 10 on the door contact surface F side. The amount of protrusion is adjusted to G ₁ which leaves a slight gap C between the lower rail 4 and the groove bottom surface. The protrusion amount of the engaging member 52 of the lower runner 10 at the other end is from the dimension G ₁ to the door contact surface F.
It is adjusted to G ₂ minus the deviation d caused by the inclination of. As a result, it is possible to avoid unmountability due to the displacement of the door 6 due to the displacement of the vertical surface of the door contact surface F and the displacement of the horizontality of the upper rail. In addition, since the gap can be always maintained between the lower rail 4 and the groove bottom surface, friction can be avoided, and smooth running can be obtained. Further, since the amount of engagement with the lower rail can be made as large as possible, disengagement of the lower rail 4 from the storage portion 12 can be suppressed, and thus the operability of the door 6 can be improved. Even if the engagement with the lower rail 4 is disengaged in the rail housing 12, the amount of protrusion of the engagement member 52 is constant, so that the operation for returning to the engagement is facilitated.

The retracting operation of the engaging member 52 by the operation will be described in detail. As shown in FIGS. 4 and 5, when the rotating member 46 of the operating member 24 is rotated by an operating tool such as a screwdriver, the screw shaft 44 is rotated. Is rotated. As a result, the screwing member 50 slides in the cylindrical casing 22 in the direction of the arrow S, and at the same time, the engaging member 52 moves. A ball bearing function is exerted by the sphere 56, and the engagement member 52 rotates smoothly with respect to the screwing member 50. Therefore, the friction of the engaging member 52 with respect to the lower rail 4 is alleviated, and the early wear of the engaging member 52 is avoided. In this example, the protrusion dimension of the runner body 26 when it is immersed is about 5 mm, and the maximum protrusion dimension is about 25 mm. The lower rail 4 is designed correspondingly. Further, the construction of the lower rail 4 may be either a floor surface type or a floor surface buried type.

In addition, in the above-described mounting piece 40, an insertion hole 40b for moving the engaging portion 60 is formed with a diameter equal to the outer diameter of the engaging portion 60, which allows the tubular portion 58 to closely slide together. As a result, the engaging member 52 can be moved in and out without play. The retracting operation of the engaging member 52 is performed by the reverse rotation of the operating member 24.

[Effect of device]

According to this invention, the amount of protrusion of the runner body can be adjusted according to the displacement of the door caused by the displacement of the verticality of the door contact surface and the displacement of the horizontality of the upper rail, so that the smooth running of the door can be obtained. At the same time, since the amount of engagement with the lower rail can be made as large as possible, disengagement of the lower runner can be suppressed even in a partition door having a door storage portion. In addition, since the gap can be maintained between the bottom surface of the groove of the lower rail and friction, it is possible to obtain smooth running of the door. Since the engagement member is rotatably provided with respect to the screw member, the friction with the lower rail can be alleviated, and thus the early deterioration of the lower runner can be avoided. Further, the outer layer of synthetic resin can reduce friction and contact noise with the lower rail, and the inner layer of metal can maintain strength against contact pressure.

Further, according to the present invention, the ball bearing function of the sphere makes it possible to smoothly rotate the engaging member with respect to the screwing member, so that the friction of the lower runner can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a lower partition runner according to the present invention in use in an embodiment, FIG. 2 is an exploded perspective view, and FIG. 3 is a schematic side view showing an adjusting operation of the lower runner. FIGS. 5 and 5 are sectional views showing the adjusting operation, FIG. 6 is a schematic plan view showing a conventional housed state of the door, FIG. 7 is a schematic side view showing a positional deviation when the door is attached, and FIG. FIG. 9 is a diagram showing disengagement of the lower runner in the storage portion, and FIG. 9 is a diagram showing swing of the door in the storage portion. 2 …… Upper rail, 4 …… Lower rail 6 …… Door, 10 …… Lower runner 20 …… Drilling hole 22 …… Cylinder casing 24 …… Operating member, 26 …… Runner body 44 …… Screw shaft, 50 ...... Screw member 52 …… Insertion member, 56 …… Sphere 60c …… Outer layer, 60d …… Inner layer

Claims (2)

[Scope of utility model registration request] 1. A lower runner for use in a movable partition door that is movably installed between an upper rail and a lower rail via a runner, and is embedded in a digging hole in the lower portion of the door with the door vertically oriented. A cylindrical casing to be fixed, a screw shaft extending in the vertical direction of the door, an operating member provided in the cylindrical casing so that the screw shaft can be rotatably operated from the outer surface of the door, and a screw shaft of the operating member. A runner body that is screwed and moves in the vertical direction of the door by screwing adjustment by the above operation, and the runner body is screwed to the screw shaft and is prevented from rotating by the cylindrical casing. And a two-layer structure of an outer layer of synthetic resin and an inner layer of metal. The screw member is rotatably fitted around the vertical direction of the door as an axis, and the lower end is engaged with the groove of the lower rail. From the engaging member The lower runner of the movable partition. 2. The lower runner of a movable partition door according to claim 1, wherein a sphere is provided on a fitting surface between the screwing member and the engaging member.