JP4825127B2 - Sliding door slide rail - Google Patents

Description

  The present invention relates to a slide rail, and more particularly to a slide rail used for a hanging door for automatic opening and closing.

    FIG. 6 is a view showing a cross-sectional structure of a conventional slide rail. As shown in FIG. 6, the slide rail is composed of an outer rail, an inner rail, a large number of balls, and a ball retainer for orderly arranging the large number of balls without contacting them. Since it can be dispersed and supported and can be moved almost without resistance, it is used in a wide range of applications, from electronic equipment to furniture and office desk drawers.

    Since this type of slide rail is used in the vertical direction as shown in FIG. 6 and is provided on both sides in the case of a drawer or the like, the load is applied to the lower outer rail via the lower ball row from the lower portion of the inner rail. It will hang on the inside upper side. However, when this slide rail is used for a suspension door, the outer rail is fixed to the wall side and the suspension door is attached to the inner rail side using a connector. As a countermeasure against this, the door was hung using a connecting metal fitting with the center of gravity of the door coming as far as possible on a straight line connecting the centers of gravity of the upper and lower rows of balls. As another device, a slide rail (see Patent Document 1) having a structure in which a slide rail as shown in FIG. 7 is vertically attached to a wall surface has been invented.

  JP 2000-170435 A

  Now, when using these two types of slide rails to automatically open and close a suspension door, the automatic sliding door opening and closing drive must be brought to the top of the sliding door due to the space and appearance. It was. However, in the former case, there is an advantage that an automatic sliding door opening / closing drive device can be mounted immediately above the slide rail, but in the case of this slide rail structure, the lateral load must be supported by the groove depth by the radius of curvature. In addition, since there is an allowable rattling, there is a risk that the inner rail may come off from the upper ball row when the lateral load becomes large, and it cannot be used for those that apply a large load in the lateral direction. is there.

  Moreover, since the slide rail of patent document 1 which is the latter is hanging from the top, the automatic door opening / closing drive device is mounted further above the rail hanging bracket or between the inner rail and the sliding door upper surface. When installing an automatic door opening and closing drive device, there is a disadvantage that the connecting bracket itself must be shaped so as to avoid contact with the automatic door opening and closing drive device, and the left and right retainers are not connected, so the left and right movements are separate. Therefore, there is an inconvenience that an equal load is not applied to the left and right ball group rows. The present invention has been provided for the purpose of solving these disadvantages.

  One aspect of the present invention is a slide rail of a type that is mounted parallel to the wall surface, and the shape of the outer rail is configured to support the lower row of balls from the lower side in the vertical direction and the upper row of balls from the horizontal direction. The lower part of the inner rail is pressed from the upper side in the vertical direction, and the outer rail and the ball are supported by the ball support surface of the outer rail and the ball. The contact surfaces of the inner rails have an arc-shaped cross-sectional shape with the same curvature as the outer circumference of the ball, so that the balls are wrapped around each other, and the upper and lower portions of the inner rail hold the upper row of balls from the side, and the outer rail The ball support surface and the opposite side of the ball through the ball are the holding surface, the outer rail and ball, and the inner rail and ball. The contact surfaces of the inner rail have an arc-shaped cross-sectional shape with the same curvature as the outer circumference of the ball so that the balls wrap around each other, and the outer surface of the central portion of the inner rail is located outside the maximum depth position of the outer rail. The retainer that forms a wide space between the outer rail and the inner rail and separately aligns and holds a plurality of balls in the upper and lower rows without contacting the outer rail and the inner rail formed on the upper and lower sides respectively. The upper and lower retainers are connected by a plurality of retainer couplers that do not contact the mounting bolts of the outer rail and do not contact the inner rail, and the inner rail ends are connected to both ends of the connected retainers. The retainer and the inner rail are configured to move simultaneously when the corresponding end of the Each of the interlocking tools is provided, and both ends of the outer rail are retainer and inner rail detachment prevention blocks. Hold the upper row of balls from the side, and the opposite side of the outer rail support surface and the ball is the inner rail holding surface, one of the contact surface of the outer rail and the ball or the contact surface of the inner rail and the ball Is a sliding rail for a sliding door that has a radius of curvature larger than the radius of curvature of the ball and the other has a cross-sectional shape in which the other side has a straight part and sandwiches the ball with each other.

  Here, the fact that the outer surface of the central portion of the inner rail is located outside the maximum depth position of the outer rail means that it will never contact the outer rail even if it is attached to the inner rail and moved. Yes.

  The sliding door slide rail of the present invention is configured to support the vertical load by the lower row of balls and to support the horizontal load by the upper row of balls, so the thickness of the hanging door has been changed. Even if an unbalanced load occurs, simply attaching the suspension door as it is does not cause problems such as detachment from the ball row, and the slide rail is mounted parallel to the wall surface. However, only the L-shaped mounting bracket is sufficient, and from the L-shaped mounting bracket, a slider can be easily installed to engage with the rotating screw shaft in the guide case installed at the top, maximizing the space above the sliding door. It is possible to automate the suspension door by utilizing it in a compact size. In addition, since the upper and lower retainers are connected to each other by a plurality of retainer couplers and both ends by interlocking tools, the conventional upper and lower ball rows shown in FIG. 6 can be moved simultaneously. Since the upper and lower parts can be manufactured separately, each can be processed into a simple shape, and there is an effect that it is not necessary to manufacture a complicated shape as shown in FIG.

  FIG. 1 is a front view of the slide rail of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 of the first embodiment, and FIG. 1 is a cross-sectional view taken along the line BB in FIG. 1, FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 1 according to the second embodiment, FIG. FIG. 7 is a cross-sectional view of the slide rail of Patent Document 1, and FIG. 8 is a cross-sectional view of the mounting when the slide rail of the present invention is mounted on a suspension door and an automatic door device is provided to form an automatic door. Yes, AA cross-sectional view is a cross section of a portion without a retainer connector, and BB cross-sectional view is a cross section of a portion with a retainer connector.

  First, the configuration of the first embodiment will be described. In FIGS. 1 to 3, the slide rail 10 is of a type that is mounted in parallel to the wall surface 8, and the shape of the outer rail 1 supports the lower row of balls 3 from below in the vertical direction. It is configured to support the balls 3 in the row from the horizontal direction. The shape of the inner rail 2 is the lower part, and the ball 3 in the lower row is pressed from the upper side in the vertical direction. The contact surfaces of the outer rail 1 and the ball 3 and the inner rail 2 and the ball 3 having the same curvature as the outer periphery of the ball 3 and wrapping the ball 3 with each other as a holding surface The upper horizontal portion of the inner rail 2 holds the upper row of balls 3 from the side, and the ball 3 supporting surface of the outer rail 1 and the ball 3 are The opposite side is the holding surface, and the contact surfaces of the outer rail 1 and the ball 3 and the inner rail 2 and the ball 3 have arc-shaped cross-sectional shapes having the same curvature as the outer periphery of the ball 3 and The outer rail has a shape that wraps, and the outer surface of the central portion of the inner rail 2 is located outside the maximum depth position of the outer rail 1 to form a wide space between the outer rail 1 and the inner rail 2, and a plurality of upper and lower rows Retainers 4 for separately aligning and holding the balls 3 are provided without contact between the upper and lower outer rails 1 and 2, and the upper and lower retainers 4, 4 are mounting bolts (not shown) of the outer rail 1. Are connected by a plurality of retainer couplers 5 that do not contact the inner rail 2 and do not contact the inner rail 2. Are provided with interlocking tools 6 and 6 configured to move the retainer 4 and the inner rail 2 simultaneously when the end of the inner rail 2 reaches the corresponding end of the retainer 4. It is a sliding door slide rail 10 provided with retaining blocks 7 and 7 for the retainer 4 and the inner rail 2 at both ends.

  Next, a use example of this slide rail will be described. In FIG. 8, the slide rail 10 is first installed horizontally on the wall surface 8 in the opening / closing direction of the sliding door 9. A guide case 12 with a streak groove through which the toothed rotating shaft 11 is inserted is provided at the top of the slide rail 10, and a resin liner 13 with a streak groove is fitted into the guide case 12. The toothed rotary shaft 11 is inserted into the interior of the shaft so that the toothed rotary shaft 11 cannot move in the longitudinal direction, and one end of the toothed rotary shaft 11 is axially connected to the drive motor 14 through a coupling. The mounting bracket 15 for mounting the slide rail 10 is provided with a moving element 16 having screwed teeth for opening and closing the sliding door 9 by meshing with the meshing teeth of the toothed rotary shaft 11 exposed from the streak groove portion of the guide case 12. It is an automatic sliding door device. In this case, an uneven load is applied to the slide rail, but the slide rail of the first embodiment has no rattling and can easily support the sliding door 9 having the uneven load.

  Next, the configuration of the second embodiment will be described. The lower receiving portion of the slide rail of the second embodiment has the same configuration as that of the first embodiment, but the upper configuration of the slide rail is different. 1, 4, and 5, the upper shape of the inner rail 2 presses the upper row of balls 3 from the side, and the outer rail 1 supports the support surface of the outer rail 1 and the opposite side via the ball 3. Of the contact surfaces of the ball 3 or the inner rail 2 and the ball 3, the contact surface of the inner rail 2 with the ball 3 has a curvature larger than the curvature of the ball, and the contact surface of the outer rail 1 with the ball 3 is It is the slide rail 10 which has a linear part.

  This is a slide rail 10 that is effective when a sliding load is applied to the slide rail 10 and there is no guide roller (not shown) below the sliding door 9. In this case, when the sliding door 9 moves while swinging slightly in a direction perpendicular to the wall surface, the load is supported by the ball contact surface of the lower row of the inner rail 2 of the slide rail 10 and the ball contact surface of the lower row of the outer rail 1. The ball 3 is swung around the center axis of the ball 3. Therefore, the balls 3 in the upper row of the slide rail 10 move up and down slightly, but in response to the movement, the ball contact surface of the outer rail 1 in the upper row is not a surface but a continuous point, but is always a straight portion of the outer rail 1. Can be supported with horizontal force.

  Front view of slide rail   AA sectional view in FIG.   BB sectional drawing in Example 1 of Drawing 1   AA sectional view in FIG.   BB sectional view in Drawing 1 of Example 2   Cross section of a conventional slide rail   Sectional view of slide rail of Patent Document 1   Cross-sectional view of the installation when the slide rail is mounted on a suspension door and an automatic door device is provided to make an automatic door

Explanation of symbols

1 Outer rail "
2 Inner rail 3 Ball 4 Retainer 5 Retainer connecting tool 6 Interlocking tool 7 Detachment block 8 Wall surface 9 Sliding door 10 Slide rail 11 Toothed rotating shaft 12 Guide case 13 Resin liner 14 Drive motor 15 Mounting bracket 16 Moving element

Claims (2)

    A slide rail that is mounted parallel to the wall surface, and the outer rail shape is configured to support the lower row of balls from below in the vertical direction and the upper row of balls from the horizontal direction. The lower part presses the lower row of balls from the upper side in the vertical direction, and the outer rail and the ball, and the contact surface between the inner rail and the ball are mutually connected to the outer rail through the ball support surface and the ball. It has an arcuate cross-sectional shape with the same curvature as the outer periphery and wraps the balls with each other. The upper and lower parts of the inner rail hold the upper row of balls from the side, and the ball support surface of the outer rail and the ball The contact side between the outer rail and the ball and the inner rail and the ball The outer circumference of the inner rail has an arcuate cross-sectional shape with the same curvature as the outer circumference of the ball, and the outer surface of the inner rail is located outside the maximum depth of the outer rail, A retainer that forms a wide space between the rails and separately aligns and holds a plurality of balls in the upper and lower rows is provided without contacting the upper and lower outer rails and inner rails. The retainers are connected to each other by a plurality of retainer couplings that do not contact the mounting bolts of the outer rail and do not contact the inner rail, and the inner rail ends are connected to the corresponding ends of the retainers at both ends of the connected retainers. Each of these interlocking tools is designed to move the retainer and the inner rail at the same time. Provided, the outer rail opposite ends hanging door sliding rail, characterized in that the latch block of the retainer and the inner rail is provided.   The upper shape of the inner rail holds the upper row of balls from the side, and the opposite side is the holding surface of the inner rail through the support surface of the outer rail and the ball, and the contact surface of the outer rail and the ball or the inner rail and the ball 2. The contact surface of the first and second surfaces according to claim 1, wherein one of the contact surfaces has a radius of curvature larger than the radius of curvature of the ball, and the other has a cross-sectional shape in which the straight portion is sandwiched between the balls. Slide rail for hanging doors.

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