JP2005325646A - Door roller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door roller having a bearing part superior in shock absorbing performance to stress applied in the various directions, and superior in stability of a rotary shaft in opening and closing. <P>SOLUTION: This door roller is composed of a pulley 2 forming one strip of recessed groove 1 on the whole peripheral surface for engaging with a guide rail of a door frame for fitting a paper sliding screen, an inner frame 4 having a pair of support plates 3 and 3 for supporting the pulley 2, and an outer frame 5 supporting the inner frame 4 so that a position can be adjusted and fixed to a frame of the paper sliding screen. The pair of support plates 3 and 3 have respectively the bearing part 7 for supporting a wheel shaft 6 of the pulley 2. The respective bearing parts 7 respectively swell inside the pair of support plates 3 and 3, and have respectively a rhombic shaft hole 8 in a central part with the upper, lower, left and right sides as the apex. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a so-called sliding door that can secure confidentiality between the sliding door shoji and the door frame by bringing the sliding door shoji into close contact with the indoor side of the door frame during locking, among the sliding door shoji doors. The present invention relates to a doorcar intended to be used in

  As a conventional pull door door cart, for example, a door cart is rotatably supported in an intermediate portion of a pivot that supports both ends of an inner case supported in an outer case fixed to a lower arm, In order to support both ends of the pivot shaft, a pair of inner support plate portions constituting the inner case that are aligned with each other is formed with a long hole in the vertical direction (for example, see Patent Document 1 below). ).

JP 2000-345759 A

  However, since the conventional door wheel supports the axle with a hole that is long in the vertical direction, it can swing with respect to the horizontal axis (corresponding swing), but it swings with respect to the vertical axis (non-corresponding swing). For example, when the sliding door shoji is closely attached during locking, the load on the guide rail due to the non-corresponding swinging force that is generated not only depletes the axle and shaft hole of the door wheel every time the locking is repeated. In some cases, it can also cause rattling of sliding door shoji when locked.

  In addition, the appearance of buildings is diversified, guided in a curved line, and sliding door shojis with curved shapes are also found here. Today, they are excellent in buffering against stress in various directions, and when opening and closing. There has been a demand for a door wheel having a bearing portion on which a rotating shaft is satisfactorily seated. The present invention has been made in view of the above circumstances.

  The door pulley according to the present invention, which is made to solve the above-mentioned problems, supports a pulley having a single groove formed on the entire circumferential surface for engaging with a guide rail of a door frame into which a sliding door shoji is fitted. The inner frame includes a pair of support plates and an outer frame that supports the inner frames so that the position of the inner frames can be adjusted and is fixed to the frame of the sliding door shoji. The pair of support plates support the axle of the pulley. Each bearing part is provided with a rhombus-shaped shaft hole each bulging inward of the pair of support plates and having apexes at the top, bottom, left and right.

  In order to avoid wear due to friction caused by the rotation of the rotating shaft with respect to the shaft hole, the pulley is formed with a shaft hole having a circular cross section for inserting a cylindrical wheel shaft rotatably in the center. It is good also as a door wheel which comprises a rolling bearing. In addition, the rhombus shape having the top, bottom, left, and right vertices is a rhombus shape (including a square shape) in which a line connecting diagonal vertices is parallel to the horizontal axis or the vertical axis.

  According to the door pulley of the present invention, not only is it possible to swing both in the horizontal axis and in the vertical direction (following performance), but the edge of the shaft hole corresponding to the four sides of the rhombus shape is the rotation axis of the pulley. The support position always acts so as to be close to one of the diagonal lines of the rhombus (restorability), and sometimes also has a buffering action to distribute the stress received through the guide rail along the four sides. (Buffering). Further, at each apex, the rotating shaft is always supported at two points, so the wear resistance is also good.

  Due to the above characteristics, for example, even when the sliding door shoji is closely attached at the time of locking, the load on the guide rail due to the non-corresponding swinging force that has occurred in the conventional door wheel is removed, and each time the door is locked, It also eliminates the shakiness of the sliding door shoji when the axle and shaft hole are consumed, and when opening and closing, and sometimes when locking. Thus, today, with the diversified appearance of buildings, it is possible to provide a door wheel that has excellent cushioning against stress applied in various directions and that has a bearing portion that allows the rotary shaft to sit well during opening and closing. Become.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a door cart according to the present invention will be described with reference to the drawings.
The door pulley shown in FIG. 1 includes a pulley 2 in which a single groove 1 is formed on the entire peripheral surface to engage with a guide rail of a door frame in which a sliding door shoji is fitted, and a pair of support plates 3 that support the pulley 2. 3 and an outer frame 5 that supports the inner frame 4 so that the position of the inner frame 4 can be adjusted and is fixed to the frame of the sliding door shoji.

  The pulley 2 is formed in the center of a synthetic resin wheel by, for example, a rolling bearing 10 in which a shaft hole 9 having a circular cross section for rotatably inserting a cylindrical axle 6 is formed. The concave groove 1 is slightly wider than the ridge portion of the guide rail and allows the pulley 2 to swing properly by allowing the pulley 2 to swing properly. An opening width slightly larger than the swing width of the outer peripheral edge is given. In addition, the bottom surface has a symmetrical curved surface so that it can follow smoothly without abrupt behavior (position / posture variation, etc.) even when the sliding door is locked. Has a sufficient depth so as not to be derailed by the allowable swing (see FIGS. 1C, 2E, and 2A, 2B).

  The inner frame 4 is formed by bending a square stainless steel plate into a U-shape to form the pair of support plates 3 and 3 and a back plate 11 interposed therebetween (FIG. 1 ( E) or FIG. 2 (A)).

  Each support plate 3, 3 has two front and rear bearing portions 7, 7 facing each other at a distance slightly longer than the diameter of the pulley 2 in order to support the axles 6, 6 of the two front and rear pulleys 2, 2. (In order to support the axle 6 of the single pulley 2, the bearings 7 and 7 may be formed to face the support plates 3 and 3, respectively). Each of the bearing portions 7, 7 swells in a circular shape inside the pair of support plates 3, 3, and a diamond-shaped shaft hole 8 having a vertex at the top, bottom, left, and right is formed in the center (FIG. 2). (See (C)).

  The height of the bearing portion 7 is a height corresponding to the allowable swinging width of the pulley 2. Normally, when the pulley 2 is supported by the inner frame 4, the bearing portion 7. The height of the shaft hole 8 follows the swing width of the axle 6 when an allowable swing of the pulley 2 occurs. In the place where the axle 6 swings up and down, left and right, which is set to the minimum possible size, is supported by the two adjacent sides that make up the rhombus shape, for example, even when locked A stable posture can be maintained.

  In addition, a round hole through which a cylindrical guide pin 12 having narrow support regions formed at both ends thereof is inserted in the upper middle portion of the two bearing portions 7, 7 provided on each support plate 3, 3. 13 is provided (see FIG. 1B or FIG. 3).

  The outer frame 5 includes front and rear four side plates 14a, 14b, 14c, and 14d, an intermittently provided top plate 15, and two front and rear locking margins 16 and 16 for fixing to a sliding door frame. A member made of a stainless steel plate is bent, and a shape is formed by forming a meshing portion 17 in the overlapping portion and retaining the shape, thereby forming a box-like shape having an opening for loading the inner frame 4 downward. is there.

  The left and right side plates 14c and 14d of the outer frame 5 include an inclined portion that inclines from the upper part of the middle part of the side plates 14c and 14d toward the front and lower sides, and a guide part that extends vertically to the lower edge of the left and right side plates. A pair of guide grooves 18 bent in a U-shape are formed facing each other. Both end portions of the guide pin 12 inserted through the round hole 13 of the inner frame 4 are guided by the guide groove 18 to reach the inclined portion when the inner frame 4 is loaded into the outer frame 5, and the guide The inner frame 4 holding the pin 12 is supported by the tip of a screw 19 screwed into the screw hole of the rear side plate 14b of the outer frame 5 so that the sliding door shoji to which the door wheel is fixed is supported. The support height is set (see FIG. 1B or FIG. 3).

  The door cart according to the present invention is configured as described above. For example, when the door is pulled toward the inside of the housing several mm from the normal guide position at the time of locking, the sliding door shoji is tilted by the swing allowed by the pulley. A corner portion formed in the vicinity of the upper and lower apexes of the shaft hole 8 when it is inclined as described above by the rhomboid shaft hole 8 that can be horizontally moved by an appropriate amount and has apexes on the upper and lower and left and right sides. Thus, the axle 6 of the pulley 2 is fixed in position without shaking, and the sliding door shoji at the time of locking can be stably supported without causing up / down / left / right shaking.

  In addition, since the horizontal swing by the vertical axis is also possible, it is possible to follow the curved guide rail without difficulty, and at that time, the load on the shaft hole 8 and the axle 6 can be suitably reduced. The consumption of these parts can also be suppressed, and in combination with the simple configuration, it is possible to perform a stable function over a long period of time.

  It can be widely used for various specifications of sliding door sliding doors for the purpose of securing confidentiality when the casing window and door are locked.

BRIEF DESCRIPTION OF THE DRAWINGS It is an exploded view which shows an example of the door pulley by this invention, (A) is a side view of an outer frame, (B) is a side view of an inner frame, and a side view by the imaginary line of other members, (C) is a pulley A side view, (D) is a bottom view of the outer frame and a bottom view by imaginary lines of other members, (E) is a bottom view of the inner frame and the pulley. (A) is a bottom view of the inner frame and pulley of the door according to the present invention, and is a bottom view showing the swinging state of the pulley by phantom lines, and (B) is a front view of the inner frame and pulley of the door according to the present invention. 1C is a front view showing the swinging state of the pulley in phantom lines, and FIG. 3C is a side view of the inner frame of the door pulley and the pulley according to the present invention, in the shaft hole of the axle when the pulley swings. It is the side view which showed the example of movement of this by the virtual line. It is the side view which shows an example of the doorcar by this invention, Comprising: It is the side view which showed other than the inner frame with the virtual line.

Explanation of symbols

1 groove, 2 pulley, 3 support plate, 4 inner frame, 5 outer frame,
6 axles, 7 bearings, 8 axle holes, 9 axle holes, 10 rolling bearings,
11 Back plate, 12 Guide pin, 13 Round hole, 14 Side plate, 15 Top plate,
16 Stop allowance, 17 Engagement part, 18 Guide groove, 19 Screw,

Claims (2)

A pulley (2) in which a single groove (1) that engages with a guide rail of a door frame into which a sliding door shoji fits is formed on the entire peripheral surface, and a pair of support plates (3, 3) that support the pulley (2) 3) and an outer frame (5) that supports the inner frame (4) so that the position of the inner frame (4) can be adjusted and is fixed to the frame of the sliding door shoji,
Each of the pair of support plates (3, 3) includes a bearing portion (7) that supports the axle (6) of the pulley (2), and each of the bearing portions (7) includes the pair of support plates ( 3 and 3), which are each provided with a rhombus-shaped shaft hole (8) having apexes at the top, bottom, left and right at the center. The pulley (2) includes a rolling bearing (10) having a shaft hole (9) having a circular cross section for rotatably inserting a cylindrical axle (6) at the center thereof. Item 1. The door cart according to item 1.

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