JPH075183Y2 - Door guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a guide device for steadying various doors that move along a guide rail.

(Prior Art) As shown in FIG. 6, a slide door 3 movably supported by a supporting guide rail 1 laid on the floor side via a door roller 2 has a steady rest installed on the ceiling side. A vertical shaft roller 5 for steadying, which fits into the guide rail 4 for use with the same, is attached.

Further, as shown in FIG. 7, the hanging slide door 8 movably hung on the hanging guide rail 6 erected on the ceiling side via the hanging horizontal axis roller 7 has a floor side. A steady-state vertical shaft roller 10 that fits into a steady-state guide rail 9 laid on the base is attached.

Further, as shown in FIGS. 8 and 9, the two door bodies 11a,
The folding door 13 in which 11b are foldably connected to each other by a hinge 12 is a hanging guide rail erected on the ceiling side.
The upper ends of both ends are movably hung by a horizontal axis roller 15 for hanging on 14 and a vertical axis roller 17 for steadying that fits to a steadying guide rail 16 laid on the floor side is attached to the lower part of both ends. .

As described above, various doors that move along the guide rails require the guide device including the steady rest guide rail and the steady rest vertical shaft roller fitted to the steady rest guide rail 1. The vertical shaft rollers 5, 10, 17 for steady rests are used as guide rails even if the accuracy of the distance between the suspension guide rails 6, 14 and the steady rest guide rails 4, 9, 16 is slightly low.
Vertical axis rollers 5, 10, 17 for steady rest so that they do not come off from 4, 9, 16 or slide on the bottom surface of the guide rails 4, 9, 16
A vertical shaft supporting the vertical shaft is supported so that it can be raised and lowered within a certain range, and a spring for projecting the vertical shaft toward the guide rails 4, 9, 16 is provided.
The 7 was provided with a flange portion for keeping the fitting depth of the roller with respect to the guide rails 4, 9 and 16 constant.

Particularly, in the case of the folding door 13 as shown in FIGS. 8 and 9, as shown by the phantom line in FIG.
When sliding along the guide rails 14 and 16 in the folded state, the door bodies 11a and 11b become slanted and the precession vertical shaft roller 17 easily comes off the guide rail 16, so the above measures are required. Is.

(Problems to be solved by the invention) However, in the conventional guiding device as described above, as disclosed in, for example, Japanese Patent Application No. 51-35104, a micro-shaped groove for engaging a vertical shaft roller for steady rest is provided. Since the flange portion integrally formed with the roller is in contact with both side edges of the guide rail, the contact between the two diametrical positions of the flange portion and both side edges of the guide rail causes
The smooth rotation of the vertical axis roller for steady rest is hindered,
Furthermore, there was a fatal defect that the smooth movement of the door was hindered.

Further, there is not provided a locking means for locking the steady rest vertical shaft roller in a state where the vertical shaft roller is moved away from the guide rail against the biasing force of the spring. Even if the vertical axis roller for steady rest can be retracted by the operation tool provided on the side, the operation state must be continued as it is to maintain such a state, and the work of attaching and detaching the door to the guide rail Was not easy.

In addition, in the microfilm of Japanese Patent Application No. 62-15231, a vertical shaft roller for steadying is composed of an outer roller having a small diameter and an inner roller having a diameter larger than the outer roller and independently rotatable. A configuration is provided in which one of the outer peripheral end faces of the large-diameter inner roller is provided on the guide rail side so that the horizontal rail face abuts by the urging force of the spring. It is possible to solve the problem that two end faces having different directions come into contact with the horizontal rail portion of the guide rail, that is, the problem of the structure disclosed in the microfilm of Japanese Utility Model Application No. 51-35104. However, the left and right lateral movements of the entire steady vertical shaft roller with respect to the guide rail are determined by the contact between one side surface of the rail groove into which the small-diameter outer roller fits and the peripheral surface of the small-diameter outer roller and the large-diameter inner roller. Mated Since the contact is made between the other side surface of the rail groove and the peripheral surface of the large-diameter inner roller, the large-diameter inner roller has two different rotational peripheral speeds, that is, the peripheral surface and the outer surface. Since it will rotate by contacting the guide rail at two places with the end face,
After all, the rotation resistance is large, and it is difficult for the entire vertical shaft roller for steadying the guide rail to smoothly slide. Moreover, the cross-sectional shape of the guide rail becomes complicated,
It also leads to higher costs.

Further, a device provided with a locking tool for locking this type of steady-state vertical shaft roller at the retracted limit position is also disclosed in, for example, Japanese Utility Model Publication No. 61-338.
As is known from Japanese Patent Publication No. 13, the configuration of this known example locks the roller at the output limit position and the retreat limit position by a click mechanism using a leaf spring. It is not possible to reliably lock the steady vertical axis roller biased in the direction in the retracted state against the biasing force of the spring, and even if it could be locked, vibration will occur. There is a possibility that the roller may unexpectedly move due to such reasons, and it is necessary to move the roller back and forth against the spring each time.
It is troublesome to handle.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned conventional problems, and its features are denoted by reference numerals of embodiments described later in parentheses. As shown, it comprises a roller unit (20) attached to the door (3) and a door steadying guide rail (21). The roller unit (20) includes an elevating member (23) capable of ascending and descending within a certain range. , This lifting member (23) to guide rail (21)
Of the spring (24) that causes the spring (24) to project toward the side of the spring, a pair of upper and lower rollers (25, 26) rotatably supported by the outer end of the elevating member (23), and the elevating member (23). Locking tool (30) that automatically locks in the retracted position against the biasing force
And a recess (35) into which the upper and lower rollers (25, 26) fit when the lifting member (23) retracts to the retracted limit position, and the locking tool (30) resists the biasing force. The lifting member (23) is prevented from moving upward unless it is moved to the unlocked position. The pair of upper and lower rollers (25, 26) are individually rotatable around a common vertical axis. The inner roller (26) has a diameter larger than that of the outer roller (25), and the guide rail (21) has a groove portion () to which the outer roller (25) fits when the elevating member (23) is in the projecting position. 36) and either side of the groove (36) on either side of the inner roller (2
One of the outer peripheral end faces of 6) is provided with a horizontal rail surface (38) that abuts by the urging force of the spring (24), and the outer peripheral surface of the outer roller (25) has left and right side surfaces (36a) of the groove (36). , 36b) only selectively contacting the inner surface of the inner roller (26) and not contacting the peripheral surface of the inner roller (26).

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

This embodiment is configured so that it can be used for the slide door 3 shown in FIG. 6, and includes a roller unit 20 attached to the upper part of the slide door 3 and a groove-shaped guide rail 21 installed on the ceiling side. It consists of

The roller unit 20 is flush with the upper end of the slide door 3 and is embedded in the slide door 3 and fixed to the casing 22.
An elevating member 23 which is supported in the casing 22 so as to be able to move up and down and protrudes upward from the casing 22, a spring 24 which protrudes the elevating member 23 upward, and an outer end portion (upper end portion) of the elevating member 23. ) A pair of upper and lower rollers 25, 26 rotatably supported separately about a common vertical axis,
It comprises a locking means 27 for automatically locking the elevating member 23 at the retracted limit position (lower limit position).

The elevating member 23 is composed of a shaft rod 23a that supports a pair of upper and lower rollers 25, 26 at its tip end, and a cylindrical body 23b that is externally fitted to the shaft rod 23a and fixed by a pin 23c. Since the picking portion 23d projecting from the pierce through the opening 28 formed in the casing 22, the lifting range of the lifting member 23 is restricted to the vertical length range of the opening 28.

The locking means 27 is fixed to a leaf spring portion 29 integrally formed on a part of the casing 22 on the back side of the elevating member 23, and a free end (lower end) of the leaf spring portion 29, and is loosely fitted to the elevating member 23. In this state, the ring-shaped locking member 30 instructed to move horizontally in and out of the casing 22 and the elevating member 23 are moved to the spring 24 by the spring 24.
The tubular body of the elevating member 23 so that the locking claws 31 formed on the inner circumference of the locking tool 30 are engaged when it is lowered against the urging force of the locking tool 30.
23b and a locked recess 32 formed in 23b.
The front side of 0 is the casing 22 together with the tip of the knob 23d.
Projects into a recess 33 formed in the front surface of the.

Note that the locking claw 31 of the locking tool 30 only floats up and down in the notch 34 formed in the tubular body 23b of the elevating member 23 until the elevating member 23 reaches the retracted limit. Also, the lifting member
When the 23 is lowered to the retracted limit position, as shown in FIG. 3, a recess 35 is formed in the upper end of the casing 22 into which substantially the entire pair of upper and lower rollers 25, 26 is fitted.

The pair of upper and lower rollers 25 and 26 can rotate independently around the common vertical axis (the axis of the shaft rod 23a) as described above, but the inner (lower) roller 26 can rotate outside (upper side). ) Roller 25
The diameter of the outer roller 25 is larger and thinner than that of the outer roller 25.

The groove-shaped guide rail 21 includes a groove portion 36 that is slightly wider than the diameter of the outer roller 25, and the left and right shoulder portions of the groove portion 36.
Of the 37a and 37b, one shoulder portion 37a is made thicker than the other shoulder portion 37b, and one side of the outer peripheral end surface of the inner roller 26 abuts on the horizontal rail surface 38 by the urging force of the spring 24. Is formed.

As shown in FIG. 6, the sliding door 3 is set between the floor-side supporting guide rail 1 and the ceiling-side steady rest guide rail, that is, the groove-shaped guide rail 21 (guide rail 4 in FIG. 6). At this time, the raising / lowering member 23 of the roller unit 20 is lowered and locked in advance to the retracted limit position as shown in FIG.

That is, when the lifting member 23 is lowered to the retracted limit position against the biasing force of the spring 24 by the knob 23d, the locking means 27
The locking claws 31 of the locking tool 30 in the above are automatically engaged with the locked recessed portions 32 of the elevating member 23 by the urging force of the leaf spring portion 29, and
Lock in the retracted position. At this time, the outer roller 25 and the inner roller 26 are almost entirely inserted into the upper end recess 35 of the casing 22 and protected as shown in FIG.

Once the slide door 3 is set in place, the locking device 30
By pushing the front side of the to the back side and separating the locking claw 31 from the locked recessed portion 32 against the elasticity of the leaf spring part 29, the elevating member 23 is raised by the urging force of the spring 24. As a result, as shown in FIG. 2, the outer roller 25 is fitted into the groove portion 36 of the groove-shaped guide rail 21, and one of the outer peripheral end surfaces of the inner roller 26 abuts on the horizontal rail surface 38. However, at this time, the groove-shaped guide rail 21 is installed at a level such that the inner roller 26 comes into contact with the horizontal rail surface 38 slightly before the elevating member 23 reaches the protrusion limit (elevation limit).

As described above, the outer roller 25 is the groove portion of the groove-shaped guide rail 21.
By fitting with 36, the movement locus of the upper end portion of the slide door 3 is regulated by the groove-shaped guide rail 21, but at this time, it is possible to move up and down and to the guide rail 21 side by the urging force of the spring 24. The engagement depth of the biased outer roller 25 with respect to the groove-shaped guide rail 21 is determined by the inner roller 26.
Is brought into contact with the horizontal rail surface 38 of the groove-shaped guide rail 21 to be regulated to a constant depth.

Therefore, even if the gap between the upper end movement locus of the slide door 3 and the groove-shaped guide rail 21 changes slightly due to, for example, the bending or inclination of the groove-shaped guide rail 21, the lifting movement of the lifting member 23 only occurs. Outer roller 25 is grooved guide rail 21
The outer roller 25 does not slip out of the groove portion 36 or come into sliding contact with the bottom surface of the groove 36.

Since the inner roller 26 is in contact with the horizontal rail surface 38 only on one side of the center of rotation (the shaft 23a of the elevating member 23), the inner roller 26 can rotate lightly as the slide door 3 moves. . Further, when the outer roller 25 comes into contact with the side surface 36a on the same side as the side having the horizontal rail surface 38 among the both side surfaces 36a, 36b in the groove portion 36 of the groove-shaped guide rail 21 to rotate, Although it rotates in the same direction as the inner roller 26,
When the outer roller 25 rotates in contact with the opposite side surface 36b, the rotation direction of the outer roller 25 and the rotation direction of the inner roller 26 are different. Even in such a case, since both rollers 25 and 26 can rotate independently in arbitrary directions, they do not interfere with the rotation of the other roller,
Both rollers 25 and 26 smoothly rotate in opposite directions. Of course, even when the rollers 25 and 26 rotate in the same direction as described above, the rollers 25 and 26 can rotate at arbitrary speeds, so that the radii of rotation between the rolling contact surfaces of the rollers 25 and 26 and the center of rotation are different. Even in such a situation, the two rollers 25 and 26 can smoothly rotate at an arbitrary speed without interfering with the rotation of the other roller.

For the hanging slide door 8 as shown in FIG. 7 and the folding door 13 as shown in FIGS. 8 and 9, the roller unit 20 may be mounted upside down on the lower end side of the door. .

(Operation and Effect of the Invention) As described above, according to the door guide device of the present invention, the pair of upper and lower rollers for steadying, which are biased by the spring in the protruding direction, are fitted into the recess for the door. Since it can be locked by a locking tool at the limit position, the roller collides with another object when the door is set between the upper and lower guide rails or when it is stored and transported in front of it, and the roller or its In order not to cause inconvenience such as breakage of the support portion, it is not necessary to continue the operation for holding the roller in the retracted limit position.

Moreover, according to the structure of the present invention, when the outer roller is fitted in the groove portion of the steady rail by the biasing force of the spring, the inner roller having the large diameter is brought into contact with the horizontal rail surface on the guide rail side. , The outer roller keeps the fitting depth constant, but the inner roller with a large diameter that acts as the flange portion of the outer roller can rotate relative to the outer roller, and the horizontal rail on the guide rail side Since the surface comes into contact with only one side on one side of the center of rotation, the outer roller and the inner roller corresponding to the flange portion can always smoothly rotate, as described in detail in the embodiment. As a result, it became possible to move the door smoothly at all times.

That is, in the configuration of the present invention, only the small-diameter outer roller (25) engages with the guide rail to perform the steadying action, and the large-diameter inner roller (26) has the rail groove portion of the small-diameter outer roller (25). It functions only to keep the fitting depth to (36) constant.

Therefore, the small-diameter outer roller (25) selectively abuts on both the left and right side surfaces (36a, 36b) of the rail groove portion (36) to perform lateral steady rest, and the large-diameter inner roller (26) Since the peripheral surface of the large-diameter inner roller (26) does not contact the guide rail side under any circumstances, the horizontal rail surface (38) only contacts the horizontal rail surface (38) only at one place on the outer peripheral end surface, and thus the runout with respect to the guide rail. The sliding movement of the entire stopping vertical axis roller is extremely smooth. Further, since it is not necessary to provide a side wall portion that comes into contact with the peripheral surface of the large-diameter inner roller (26) on the guide rail side, the cross-sectional shape of the guide rail is extremely simple, and the cost can be reduced.

[Brief description of drawings]

1 is a partially longitudinal front view, and FIG. 2 is an overall vertical side view,
FIG. 3 is a vertical cross-sectional side view with the roller retracted, FIG.
The drawing is a sectional view taken along the line AA of FIG. 2, and FIG. 5 is the sectional view taken along the line BB of FIG.
6 is a schematic front view of the sliding door, FIG. 7 is a schematic front view of the hanging sliding door, FIG. 8 is a schematic plan view of the folding door, and FIG. 9 is a schematic front view of the folding door. is there. 3 ... Door, 20 ... Roller unit, 21 ... Steady groove guide rail, 22 ... Casing, 23 ... Lifting member,
23a ... axle rod, 23b ... cylindrical body, 24 ... spring, 25 ...
… Outer roller, 26 …… Large diameter inner roller, 27 …… Locking means, 29 …… Flat spring part, 30 …… Locking tool, 31 …… Locking claw, 32
…… Locked recess, 35 …… Recess, 36 …… Groove, 38 …… Horizontal rail surface.

Claims (1)

[Scope of utility model registration request] 1. A roller unit (20) attached to a door (3) and a door steadying guide rail (21), wherein the roller unit (20) is an elevating member (23) capable of ascending and descending within a certain range. ) And this lifting member (23) to the guide rail (21)
Of the spring (24) that causes the spring (24) to project toward the side of the spring, a pair of upper and lower rollers (25, 26) rotatably supported by the outer end of the elevating member (23), and the elevating member (23). Locking tool (30) that automatically locks in the retracted position against the biasing force
And a recess (35) into which the upper and lower rollers (25, 26) fit when the lifting member (23) retracts to the retracted limit position, and the locking tool (30) resists the biasing force. The lifting member (23) is prevented from moving upward unless it is moved to the unlocked position. The pair of upper and lower rollers (25, 26) are individually rotatable around a common vertical axis. The inner roller (26) has a diameter larger than that of the outer roller (25), and the guide rail (21) has a groove portion () to which the outer roller (25) fits when the elevating member (23) is in the projecting position. 36) and either side of the groove (36) on either side of the inner roller (2
One of the outer peripheral end faces of 6) is provided with a horizontal rail surface (38) that abuts by the urging force of the spring (24), and the outer peripheral surface of the outer roller (25) has left and right side surfaces (36a) of the groove (36). , 36b), but does not include a portion that only abuts on the inner surface of the inner roller (26).