JPH03208978A - Floor roller for sliding door - Google Patents

Abstract

PURPOSE:To make the height of a roller adjustable easily by a method wherein a roller holder is supported with a fixing base body fixed to a sliding door so that the roller holder becomes capable of making vertical movement by operation of an adjusting disk, and the roller that rolls over a rail is held with the holder so that the roller makes free rolling. CONSTITUTION:For adjustment of the height of a roller to the position of a sliding door, and adjusting disk 36 is turned by attaching a finger to knurled side face 38 of the adjusting disk 36 that is exposed through a slit 20 provided to a fixing base body 11 fixed to the underside of the sliding door. A thread part 25 screwed into a threaded hole of the disk 36 moves vertically against the base body 11 in accordance with the horizontal turning of the disk 36. Then a roller holder 21 provided integral with the thread part 25 vertically slides along a recessed part 16 of the base body 11, making the height of the roller 31 to the position of the sliding door vary.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a door roller device used for a sliding door that slides in the horizontal direction, and particularly relates to a door roller device for adjusting the height of a roller relative to the sliding door. Regarding structure.

(Prior Art) For example, in order to smooth the sliding movement of a sliding door whose upper end and lower end are slidably fitted into rail grooves formed in a lintel and a sill, the lower end of the sliding door is It is common practice to install a door roller device in the area. and,
Conventional door roller devices simply have a structure in which a roller that rolls on the bottom of the rail is attached to a base that is fixed to the sliding door. However, in this conventional structure, for example, the distance between the upper and lower rail grooves If there is a dimensional error between the height of the sliding door and the height of the sliding door, this dimensional error cannot be accommodated, so when the sliding door is slid, the sliding door will rattle, and as a result, the sliding door will not be able to slide smoothly. There was a problem.

Therefore, a door roller device is also used in which the height of the roller relative to the sliding door can be adjusted in response to the above-mentioned dimensional errors. In a conventional door roller device in which the height of the roller can be adjusted, the roller is pivoted to a holder case, which is a base fixed to the sliding door, as described in, for example, Japanese Utility Model Application No. 62-110470. A holder is supported in a vertically movable manner, a screw is protruded from the top of the holder so as to be rotatable but not vertically movable, and this screw is screwed into a screw hole formed in the holder case. , a worm gear supported by the holder case with its tip surface exposed was meshed with a worm wheel located inside the holder case and integrally formed on the upper part of the screw.

This worm gear is rotated by a driver that is engaged with its end surface. However, this conventional structure was complicated and resulted in an increase in the size of the door roller device. Additionally, a screwdriver was required to adjust the height of the rollers.

(Problems to be Solved by the Invention) As described above, in the conventional door roller device in which the height of the roller can be adjusted, the rotation of the worm gear operated by the driver causes the roller holder to be fixed via the worm wheel and the screw. Since the roller was moved up and down relative to the holder case, there was a problem in that a screwdriver was required to adjust the height of the roller, and the structure was complicated and large.

The present invention aims to solve these problems, and provides a door roller device that can adjust the height of the roller relative to the sliding door, and that can be easily adjusted with bare hands without using a jig such as a screwdriver. The purpose is to provide Furthermore, it is an object of the present invention to simplify the structure and downsize the door roller device.

[Structure of the invention]

(Means for Solving the Problems) The present invention aims to achieve the above-mentioned object, and a door roller device according to claim 1 provides a sliding door that is slidably assembled to a rail 5 formed on a threshold, furniture, etc. a fixed base I1 fixed to the lower end of the fixed base I1; a roller holder 21 supported vertically movably on the fixed base I1; and an adjustment disc 36 whose outer peripheral surface is exposed at least from the fixed base 11 and which moves the roller holder 21 up and down with respect to the fixed base 11 by rotation about the central axis of this outer peripheral surface. It is something that

Further, the door roller device according to the second aspect of the present invention has a holder case 1 as a fixed base fixed to a lower end portion of a sliding door 6 which is slidably assembled to a rail 5 formed on a threshold, furniture, etc.
1, a roller holder 21 that is fitted and supported in a vertically slidable manner within a guide recess l6 that is formed in the holder case 11 and that opens at least downward; The roller 31 that rolls on the rail 5, the vertical threaded part 25 integrally protruding from the upper surface of the roller holder 21, and the threaded hole 37 into which the threaded part 25 is screwed through are arranged in the center. The adjustment disc 36 is fitted into a window hole 20 formed in the upper side of the holder case I1 so as to be rotatable and slidable in the horizontal direction.

On the other hand, in the door roller device according to the third aspect of the invention, instead of integrally providing the threaded portion 25 on the roller holder 21 and screwing the threaded portion 25 into the adjustment disc 36, The threaded part 2 is vertical to the threaded hole 47 formed in the part.
5 are screwed together, and an adjustment disk 36 is coaxially and integrally provided on the upper part of this threaded portion 25.

(Function) In the door roller device according to claim 1 of the present invention, for example, after the lower end of the sliding door 6 to which the fixed base 11 is fixed is assembled to the rail 5 of a sill or furniture, if necessary, To adjust the height of the rolling roller 31 relative to the sliding door 6, put your finger on the outer circumferential surface of the adjustment disc 36 exposed from the fixed base 11 and move the adjustment disc 36 with your bare hands. Operate and rotate. As the adjustment disc 36 rotates around the central axis of its outer circumferential surface,
The roller holder 21 moves up and down with respect to the fixed base 11.

As a result, the height of the roller 31 supported at the lower part of the roller holder 21 relative to the sliding door 6 changes.

Further, in the door roller device according to the second aspect, when adjusting the height of the roller 3l with respect to the sliding door 6, an adjustment disc 36 is slidably fitted into the window hole 20 at the upper side of the holder case 11 as a fixed base. Operate to rotate it horizontally.

This adjustment disc 36 is fitted into the window hole 20 and cannot be moved up and down with respect to the holder case 1l, so the adjustment disc 36
As the adjustment disc 36 rotates, the screw hole 3 in the center of the adjustment disc 36 opens.
A vertical threaded portion 25 that is threaded through the holder case 7 moves up and down with respect to the holder case 11, and this threaded portion 25
A roller holder 21 integrated with the roller holder 21 slides vertically within the guide recess 16 of the holder case 11. As a result, the height of the roller 31 supported at the lower part of the roller holder 21 relative to the sliding door 6 changes.

On the other hand, in the door roller device of claim 3, the roller 31
When adjusting the height with respect to the sliding door 6, when the adjusting disc 36 is rotated in the horizontal direction, the adjusting disc 36 and the screw portion 25 integrated therewith cannot be moved up and down with respect to the holder case 1l, so the screw As the portion 25 rotates, the roller holder 21, in which the threaded portion 25 is screwed into the screw hole 47, moves up and down with respect to the holder case 11.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

In Fig. 1, ■ indicates a lower fixed body such as a threshold made of wood, and 2 indicates an upper fixed body such as a lintel made of wood. 4
are formed in parallel and facing each other. Particularly, in the rail groove 3 of the lower fixed body 1, a lower rail member 5, which forms a rail and has a substantially U-shaped cross section, is fitted and fixed.

Reference numeral 6 denotes a sliding door which is a type of door made of wood or the like, and the sliding door 6 has a lower end portion and an upper end portion slidably fitted into the lower rail member 5 and the upper rail groove 4, respectively. It slides horizontally in t planes including itself. Note that a narrower protrusion 7 formed at the upper end of the sliding door 6 is fitted into the rail groove 4 . Further, at the lower end of the back surface of the sliding door 6 (hereinafter referred to as the rear side), fixing recesses 8 that open rearward and downward are formed on both left and right sides, respectively.

Furthermore, stopper pieces 9 are attached to both ends of the rail grooves 3 and 4 to restrict the sliding range of the sliding door 6.

For example, brake pieces l are provided on both ends of the upper rail groove 3 to provide resistance to the sliding door 6 when it approaches the limit of its sliding range.
O is attached.

Next, the configuration of the door roller device will be explained with reference to FIGS. 2 to 4.

Reference numeral 11 denotes a holder case as a fixed base, and this holder case 11 is integrally molded, for example, from synthetic resin, and includes a fitting part 12 that is fitted and fixed in the fixing recess 8 of the sliding door 6, and this fitting part 12. It consists of a flange portion 13 integrally formed to protrude from both the left and right front sides of. This flange portion 13 is fixed to the rear surface of the sliding door 6, and has through holes 15 on both left and right sides through which wood screws 14 screwed onto the sliding door 6 are inserted. In addition, the fitting portion 1
A guide recess 16 that opens rearward and downward is formed within the guide recess 2 . This guide recess 16 extending in the vertical direction
Retaining pieces 17 are integrally formed on both left and right sides of the rear portion, respectively, and protrude in opposite directions.

Further, within the fitting portion 12, a ring storage portion 18 is formed continuously above the guide recess 16 and has a smaller width in the left and right direction than the guide recess 16.
Continuously above the screw part storage part 1 with a width smaller than this
9 is formed through the hole. Furthermore, the ring storage section 1
A window hole 20 that is elongated in the left-right direction is formed in the upper part of the rear side of the holder case 11 when facing the holder case 8 . Note that the rear portion of the window hole 20 widens in a tapered shape.

21 is a roller holder, and this roller holder 21
is integrally molded from, for example, a synthetic resin, and is formed into a substantially U-shape in side view by a front surface portion 22, an upper surface portion 23, and a rear surface portion 24. Note that the width of the rear surface section 24 in the left-right direction is smaller than that of the front surface section 22 and the upper surface section 23. Further, a threaded portion 25 is integrally formed to protrude vertically upward from the center of the upper surface portion 23.

The roller holder 21 is fitted and supported in the guide recess 16 of the holder case l1 so as to be slidable in the vertical direction. Here, the left and right sides of the roller holder 21 are in contact with the left and right sides of the guide recess 16, so that the position of the roller holder 21 is regulated in the left and right direction. Further, the front side of the roller holder 21 is in contact with the front side inside the guide recess 16, and both left and right ends of the rear side of the upper surface 23 of the roller holder 21 are in contact with both retaining pieces 17 of the holder case 1l. Due to this contact, the position of this roller holder 21 is regulated in the front-rear direction.

Therefore, the rear surface part 24 of the roller holder 21 is fitted between both the retaining pieces 17. Note that the threaded portion 25 is connected to both storage portions 18 of the holder case 11. It is located within 19.

Reference numeral 31 denotes a roller made of synthetic resin or the like, and this roller 3l is sandwiched between the front part 22 and the rear part 24 of the roller holder 21, and is attached to the lower part of the roller holder 21 by a metal support pin 32. It is rotatably supported with the front-rear direction as the rotating wheel direction. Of course, the roller 31 protrudes below the roller holder 21.

Reference numeral 36 denotes a ring-shaped adjustment disc, which is integrally molded of, for example, synthetic resin, and is centered on a vertical screw hole 37 into which the threaded portion 25 of the roller holder 21 is screwed through. The department has it.

Furthermore, a knurl 38 is formed on the outer circumferential surface of the adjusting disc 36 to provide frictional resistance during operation with the finger. The adjustment disc 36 is fitted into the ring storage portion 18 and the window hole 20 of the holder case 11 so as to be slidable and rotatable in the horizontal direction, and the outer peripheral surface is exposed from the window hole 20. ing.

Note that the center of rotation of the adjustment disc 36 is the central axis of its outer peripheral surface. Further, the adjustment disk 36 is particularly sandwiched between the upper surface and the lower surface of the window hole 20, so that it cannot move in the vertical direction with respect to the holder case 11.

Note that when assembling the door roller device, the roller 31 is assembled to the roller holder 21, and the holder case 11 is
After assembling the adjustment disc 36 to the holder case 1,
1 and the adjustment disc 36, the roller holder 21 may be assembled. Further, the pair of door roller devices thus made into a unit are respectively attached to both fixing recesses 8 of the sliding door 6.

Furthermore, when assembling the sliding door 6 between the rail grooves 3 and 4 of the lower fixed body 1 and the upper fixed body 2, the protrusion 7 on the upper end of the sliding door 6 is fitted into the upper rail groove 4, and the holder case The lower end portions of the bow doors 6, which are fixed in number 11, are fitted into the lower rail member 5. In this state, the window hole 20 of the holder case 11 is located above the lower rail member 5.

After the sliding door 6 is assembled in this way, the height of the roller 31 relative to the sliding door 6 is adjusted if necessary. To do this, the adjustment disk 36 may be rotated by placing a finger on the knurling 38 on the outer peripheral surface of the adjustment disk 36 exposed in the window hole 20 of the holder case 11 and operating the adjustment disk 36 with bare hands. Since this adjustment disk 36 cannot move up and down with respect to the holder case 11, as the adjustment disk 36 rotates in the horizontal direction, it is screwed into the screw hole 37 in the center of this adjustment disk 36. The threaded portion 25 moves up and down relative to the holder case l1. As a result, the roller holder 21 integrated with the threaded portion 25 slides vertically within the guide recess 16 of the holder case 11, and the sliding door 6 of the roller 31
The height will change.

In this way, by setting the height of the rollers 3l with respect to the sliding door 6 to an appropriate value, when sliding the sliding door 6 while rolling these rollers 31 on the bottom surface of the lower rail member 5, the height of the sliding door 6 is The rattling can be reduced, and the sliding door 6 can be smoothly slid.

According to the above configuration, the height of the roller 31 is adjusted by the adjustment disk 36 having the screw hole 37 and the roller holder 21 having the screw portion 25, so that the structure of the door roller device is simplified and this The door roller device can be downsized. Therefore, it can be made inexpensively, and can be easily assembled to the sliding door 6, and there are fewer restrictions on the sliding door 6, etc. that can be used, which is advantageous in manufacturing.

In addition, if you want to embed not only the fitting part 12 of the holder case 11 but also the flange part 13 in the sliding door 6, as shown in FIG. What is necessary is just to form the recessed part 41 which surrounds the recessed part 8, and the collar part 13 is fitted into it.

Further, in the embodiment described above, the threaded portion 25 was integrated with the roller holder 21, and the adjustment disk 36 was screwed onto the threaded portion 25. However, as shown in FIG. This threaded portion 25 is provided coaxially and integrally with the
A screw hole formed directly on the upper surface 23 of the roller holder 21 or a nut 46 fixed to the upper surface 23
It may be screwed into the screw hole 47 of.

In this case, when the adjustment disc 3-6 is rotated in the horizontal direction,
This adjusting disk 36 and the screw portion 25 integrated therewith cannot move up and down with respect to the holder case 11, so the screw portion 25 cannot move up and down with respect to the holder case 11.
As the roller holder 5 rotates, the roller holder 21 to which the roller holder 5 is screwed moves up and down with respect to the holder case 11.

However, in this case, since it is necessary to prevent the threaded portion 25 projecting downward from the upper surface portion 23 of the roller holder 21 from interfering with the roller 31, the roller holder 21 must also be made large to some extent. Therefore, if the threaded portion 25 is integrally projected from the upper surface of the roller holder 21 as in the embodiment described above, the door roller device as a whole can be made more compact.

Furthermore, in the embodiment described above, the threaded portion 25 is integrated with the roller holder 21, and the adjusting disk 36 is screwed onto the threaded portion 25, and the adjusting disk 36 is rotatable relative to the holder case 11 and can be moved up and down. Although the roller holder was made immovable, a vertical screw part was installed on the top of the roller holder so that it could rotate horizontally but not move vertically, and this screw part was screwed into a screw hole formed through the holder case. In addition, an adjustment disk may be provided coaxially and integrally with the upper part of the threaded portion, and at least the outer circumferential surface of this adjustment disk may be exposed from the holder case. In this case, when the adjustment disc is rotated in the horizontal direction, the screw part rotates together with the adjustment disc and moves up and down with respect to the holder case, and the roller holder together with the screw part moves relative to the holder case. It will move up and down.

However, as in the above embodiment, it would be better if the adjustment disc 36, which requires a certain diameter in order to obtain a large torque with a small operating force, does not move up and down with respect to the holder case 11.
It can be made even smaller.

At the same time, if the adjustment disc 36 is fitted into the window hole 2θ of the holder case 11 and positioned as in the above embodiment, the structure for this positioning is simple and the structure of the door roller device is easier to understand. It can be done and it can be done cheaper.

In the illustrated embodiment, the sliding door 6 is assembled between the threshold and the lintel, but of course the door roller device can also be used for the sliding door 6 of furniture or the like.

Furthermore, in the embodiment described above, the lower end of the sliding door 6 was assembled to the lower rail member 5 which is separate from the sill etc., but the lower end of the sliding door 6 was assembled directly to the rail groove 3 formed directly on the sill etc. You can.

〔Effect of the invention〕

According to the present invention, the following effects can be obtained.

In the door roller device according to claim 1, the roller holder is vertically movably supported on a fixed base fixed to the lower end of the sliding door, and the roller holder is centered on the central axis of the outer circumferential surface of the adjustment disc whose outer circumferential surface is exposed at least from the fixed base. Since the roller holder is moved up and down with respect to the fixed base by the rotation, the height of the roller relative to the sliding door can be adjusted.Moreover, the adjustment disk can be rotated with bare hands by placing a finger on the outer circumferential surface of the adjustment disk. By operating
Adjustment can be easily made without using a jig such as a screwdriver.

Furthermore, in the door roller device of claim 2, the screw portion integrally provided on the upper surface of the roller holder is screwed through the screw hole formed in the center of the adjustment disk, and the adjustment disk is attached to the fixed base. The holder case is fitted in a window hole formed in the upper side of the case so that it can rotate and slide in the horizontal direction, making it easy to adjust without using a jig such as a screwdriver, as well as adjusting the structure of the door wheel device. can be easily made, and this door roller device can be made small and inexpensive.

Further, as in the door roller device of claim 3, the threaded portion may be screwed into the screw hole formed in the upper surface portion of the roller holder, and the adjustment disc may be integrally provided on the upper portion of the threaded portion. Although the same effects as the door roller device of claim 2 can be obtained, the door roller device of claim 2 can be made smaller because the threaded portion does not interfere with the roller.

[Brief explanation of drawings]

1 to 4 show an embodiment of the door roller device of the present invention, FIG. 1 is a perspective view showing how the door roller device is assembled to a sliding door, FIG. 2 is a front view of the door roller device, and FIG. 3 is a bottom view thereof, and FIG. 4 is a sectional view thereof. Moreover, FIG. 5 is a perspective view of a part of a modified example of the sliding door. Furthermore, FIG. 6 is a front view showing another embodiment of the door roller device of the present invention. 5. Lower rail member forming a rail, 6. Sliding door, 11.
・Holder case as fixed base, 16. Guide recess, 20. Window hole, 21. Roller holder, 25.
・Threaded part, 31...Roller, 36...Adjustment disc, 47
・Screw hole.

Claims (3)

[Claims] (1) A fixed base fixed to the lower end of the sliding door that is slidably assembled to the rail, a roller holder supported vertically on this fixed base, and rotatably supported on the lower part of the roller holder. a roller that rolls on the rail; and an adjustment disc that has at least an outer circumferential surface exposed from the fixed base and that rotates the outer circumferential surface about a central axis to move the roller holder up and down with respect to the fixed base. A door roller device characterized by comprising the following. (2) A holder case fixed to the lower end of the sliding door that is slidably assembled to the rail; and a holder case that is vertically slidably fitted and supported in a guide recess that is formed at least downwardly. a roller holder; a roller that is rotatably supported at the bottom of the roller holder and rolls on the rail; a vertical threaded portion integrally protruding from the upper surface of the roller holder; an adjustment disc having a screw hole in the center thereof and fitted in a window hole formed in the upper side of the holder case so as to be rotatable and slidable in the horizontal direction; Door roller device. (3) A holder case fixed to the lower end of the sliding door that is slidably assembled to the rail; and a holder case that is fitted and supported in a guide recess that is formed in the holder case and that opens at least downwardly so as to be slidable up and down. a roller holder; a roller that is rotatably supported at a lower part of the roller holder and rolls on the rail; a vertical threaded part screwed into a threaded hole formed in an upper surface of the roller holder; an adjustment disk coaxially and integrally provided on the upper part of the threaded part and fitted in a window hole formed in the upper side of the holder case so as to be rotatable and slidable in the horizontal direction; Characteristic door roller device.