JP2018165535A - Slide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide rail for a movable performance member capable of suppressing positional deviation of a retainer, in particular, the positional deviation during transport, without excessively increasing rolling resistance of a bearing mechanism.SOLUTION: A slide rail includes a movable rail sliding and moving in a state of being opposed to and combined with a base rail. The slide rail includes a bearing mechanism for reciprocating, sliding and moving the movable rail along the slide shaft by rotating the bearing steel balls while moved by a distance half of a length of slide movement along a slide shaft, of the movable rail to the base rail, and the movable rail is reciprocated, slid and moved along the slide shaft. The bearing mechanism includes the plurality of bearing steel balls, and further includes a retainer for arranging the bearing steel balls in a row along the slide shaft and keeping distances among the bearing steel balls constant. A magnet attracting the bearing steel balls is fixed and disposed in a moving section of the bearing steel balls, and the bearing steel balls are energized to the base rail and/or the movable rail.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a slide rail that provides support for moving a movable member in parallel, and more particularly to a slide rail that uses a bearing in which a plurality of steel balls are held by a retainer.

  A slide rail is used as a support member for translating the movable member. Among such slide rails, there is one in which a bearing is interposed between a fixed-side base rail and a movable-side movable rail. Corresponding to the relative movement between the base rail and the movable rail, the bearing steel ball is rotated (rolled) by a predetermined amount to smoothly move the movable rail relative to the base rail, and a large stroke can be obtained with a small slide resistance. It is. Such a slide rail is often used for a mechanism inside a gaming machine that can stably obtain a large parallel movement at a high speed while being in a compact space.

  For example, Patent Document 1 describes that, in a slide rail used for an effect mechanism of a gaming machine capable of giving a linear reciprocating movement, a high-speed movement operation can be given by reducing a slide resistance through a bearing. . The base rail side of the slide rail is fixed to the gaming machine main body, and an effect is given on the movable rail attached via a bearing. The effect is attached to the swing end of the working arm that swings left and right, and is reciprocated linearly with respect to the base rail. According to this, even if the rotational drive torque of the operating arm is small, the effect can be quickly and stably linearly reciprocated.

  By the way, the bearing steel ball is sandwiched between the base rail and the movable rail and rolls with respect to both the rails, and the rotation amount and the relative stroke amount of the both rails are in a fixed relationship. That is, the bearing steel ball moves with respect to the base rail by half the stroke amount of the movable rail with respect to the base rail. On the other hand, it is widely practiced to use a plurality of bearing steel balls and store them in the retainer to disperse the pressure on each bearing steel ball and rotate it smoothly. It becomes small and it becomes easy to produce position shift with respect to a base rail and a movable rail with a retainer. Even when the retainer is displaced, if the movable rail is forcibly slid, the retainer can be returned to its original position by the stopper at the end. However, this is not possible if the driving force of the movable rail is small.

  In Patent Document 2, as a slide rail that suppresses such a positional shift of the retainer, an auxiliary rolling element made of a rubber cylindrical body is rotatably supported on the retainer, and the auxiliary rolling element is provided with a base rail and a movable rail. A mechanism for clamping between the two is disclosed. The auxiliary rolling element can obtain slip resistance with respect to both rails of the retainer to suppress the displacement.

JP 2013-059477 A JP 2006-098863 A

  The retainer displacement can be suppressed by applying sliding resistance between the rolling element such as a bearing steel ball and the base rail and / or the movable rail. However, when the slide rail is moved at a high speed, the rolling resistance is excessively increased. Is not preferred.

  Furthermore, the above-mentioned position shift of the retainer is likely to occur during the transportation of the product to which the slide rail is attached. In other words, when the movable rail is positioned at the end of the stroke, the stopper makes contact and the retainer cannot move. It will cause misalignment. Such misalignment during transportation can also be suppressed by the auxiliary rolling element as described in Patent Document 2 described above. However, when slip resistance is given by rubber, the rolling resistance becomes excessively large due to the large rolling resistance coefficient. End up.

  The present invention has been made in view of the situation as described above, and the object of the present invention is to maintain the positional displacement of the retainer, particularly during transportation, without excessively increasing the rolling resistance of the bearing mechanism. It is providing the slide rail which can suppress this.

  The slide rail according to the present invention is a slide rail comprising a movable rail that is combined and slidably moved so as to face the base rail, and a bearing steel ball is sandwiched between opposed surfaces of the base rail and the movable rail, The bearing steel ball is rotated while being moved by a distance that is half the length of the base rail that is slid along the slide axis of the movable rail, and the movable rail is reciprocated along the slide axis. A bearing mechanism that moves, the bearing mechanism includes a plurality of the bearing steel balls, and includes retainers that are arranged in a line along the slide axis and that maintain a constant distance from each other. A magnet for attracting the bearing steel ball is fixedly disposed in the moving section, and the bearing steel ball is placed in the base. Characterized by biasing the Surer and / or said movable rail.

  According to this invention, the slip resistance of the plurality of bearing steel balls can be increased by attracting the magnet, and the position shift of the retainer, particularly the position shift of the retainer during transportation can be suppressed without excessively increasing the rolling resistance. .

  In the above-described invention, the magnet may be fixedly disposed in the vicinity of the back surface of the surface of the base rail or the movable rail sandwiching the steel ball. According to this invention, it is possible to easily increase the slip resistance of the bearing steel ball and suppress the displacement of the retainer.

  In the above-described invention, the magnet may be fixedly arranged so that at least a part of the bearing steel balls moving in the moving section always face each other. According to this invention, the bearing steel ball can be reliably sucked regardless of where it moves in the moving section.

  In the above-described invention, the magnet may be a permanent magnet. According to this invention, the bearing steel ball can be sucked easily.

  In the above-described invention, the permanent magnet may be magnetized so that the entire surface on the side attracting the bearing steel ball has the same pole. According to this invention, the bearing steel ball moving within the moving section can be stably sucked.

1 is a cross-sectional view of a slide rail in one embodiment according to the present invention. It is a perspective view of a slide rail. It is a top view of the principal part of a slide rail. It is sectional drawing of the slide rail in the other Example by this invention.

[Example 1]
A slide rail as one embodiment according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the slide rail 10 is an outer rail 1 that is a base rail whose back surface is fixed to a fixed mounting surface 6, and a movable rail that can slide along the slide axis L relative thereto. A certain inner rail 2, a steel ball 3 sandwiched between the outer rail 1 and the inner rail 2 and arranged side by side along the slide axis L, and a plurality of intervals between the steel balls 3 are kept constant. The retainer 4 is held in the manner described above. The back surface of the inner rail 2 is fixed to the movable mounting surface 7.

  The outer rail 1 is a rail member having a substantially U-shaped cross section, and includes rolling grooves 11 extending along the slide axis L on both inner side surfaces thereof. The inner rail 2 is also a rail member having a substantially “U” cross section, and is disposed at a position on the inner side of the outer rail 1 so that both outer side surfaces thereof are opposed to both inner side surfaces of the outer rail 1. In addition, rolling grooves 21 extending along the slide axis L are provided on both outer side surfaces. A steel ball 3 is sandwiched between the rolling grooves 11 and 21 and can roll along the rolling grooves 11 and 21, that is, along the slide axis L. As described above, the plurality of steel balls 3 are arranged in a line along the slide axis L, and are held by the retainer 4 so that the distance between them is kept constant. Further, the retainer 4 is disposed between the outer rail 1 and the inner rail 2 so as to hold the two rows of steel balls 3 arranged on the two rolling grooves 21 provided on both side surfaces of the outer rail 1 with one member. Is a plate-like body that extends in the width direction and is bent, and has a plurality of holes for holding the steel balls 3.

  Thereby, the retainer 4 and the plurality of steel balls 3 become a bearing mechanism and can reciprocally slide the inner rail 2 along the slide axis L with respect to the outer rail 1, and the direction along the slide axis L The inner rail 2 is combined with the outer rail 1 so as to restrict movement in directions other than the above.

  A magnet 5 is disposed on the outer surface of the outer rail 1 so as to attract the steel ball 3. That is, the magnet 5 is disposed close to the back surface of the rolling groove 11 that sandwiches the steel ball 3. At this time, the magnet 5 is fixed to the outer surface of the outer rail 1 and / or the mounting surface 6 on the fixed side. Details of the magnet 5 will be described later.

  Referring also to FIG. 2, the outer rail 1 is provided with a plurality of holes 12 on the bottom surface thereof, thereby being fixed to the mounting surface 6 with screws or the like. Similarly, a plurality of holes 22 are provided on the bottom surface of the inner rail 2 to enable fixing to the mounting surface 7.

  The outer rail 1 is provided with a protruding piece 13 that rises from the bottom at the end on the upper right side of the page, and serves as a stopper that restricts the movement of the inner rail 2 from the end to the end. Further, a protrusion 14 protruding from the bottom surface is provided at a position spaced from the protruding piece 13, and serves as a stopper that restricts the movement of the retainer 4 from the protrusion 14 to the upper right side. In addition, a protruding piece 15 is provided at the lower left end of the outer rail 1 in the drawing, and serves as a stopper that restricts the movement of the retainer 4 in the lower left direction. Similarly, the protruding piece 25 (in particular, the movement of the inner rail 2 in the lower left direction with respect to the retainer 4 is restricted) also on the upper right end of the inner rail 2 on the paper surface (restriction of the retainer 4 in the lower left direction). 1 is provided, and a stopper (not shown) is also formed at a position away from the lower left end of the inner rail 2 to restrict the movement of the retainer 4 in the lower left direction with respect to the inner rail 2.

  As described above, the slide rail 10 can slide the inner rail 2 along the slide axis L with respect to the outer rail 1. At this time, the steel ball 3 rolls along the rolling groove 11 and the rolling groove 21. That is, the steel ball 3 rotates at a rotation angle corresponding to the distance of the outer periphery that has been rolled, and the outer rail 1 and the inner rail 2 are spaced apart or close to each other from the center by the same rotation. That is, the steel ball 3 moves relative to the outer rail 1 by a distance that is half the distance (stroke) of the inner rail 2 relative to the outer rail 1. Further, since the retainer 4 also moves together with the steel ball 3 that holds the retainer 4, the retainer 4 moves relative to the outer rail 1 at a distance that is half the stroke of the inner rail 2.

  The moving range of the retainer 4 is limited by the above-described stopper, and the steel ball 3 moves at a constant moving rate with respect to the stroke of the inner rail 2 by rolling the steel ball 3. As a result, the steel ball 3 held by the retainer 4 is accommodated so as to be the shortest as shown in FIG. 2 (b) from the position a in the state where the inner rail 2 shown in FIG. It moves between the movement sections to position b in the state. The position a is the position of the plurality of steel balls 3 when the retainer 4 is sandwiched between the protruding piece 15 of the outer rail 1 and the protruding piece 25 of the inner rail 2 with both ends contacting. In position b, the movement of the inner rail 2 abuts against the protruding piece 13 and the movement is restricted, and the retainer 4 is disposed between the protrusion 14 described above and the stopper (not shown), and is located on the upper right side of the sheet a. This is the position of the plurality of steel balls 3 when moved in the direction. That is, the steel ball 3 held by the retainer 4 moves in a moving section c that connects the position a and the position b.

  And the magnet 5 is arrange | positioned in the movement area c, and as mentioned above, it fixes to the outer surface of the outer rail 1, and / or the attachment surface 6 of the fixed side. Thereby, the steel ball 3 is attracted to the magnet 5 in the moving section c.

  Here, it is assumed that the product with the slide rail attached is transported with the slide shaft directed in a direction other than horizontal such as the vertical direction. In this case, a force acts to cause the retainer to slide downward along the slide axis due to gravity. Even if the movable rail is fixed to the base rail during transportation, if the stopper is not in contact with the lower part of the retainer, movement of the retainer, i.e. displacement of the retainer, may occur due to vibration or the like. is there.

  On the other hand, according to the slide rail 10, since the steel ball 3 is attracted by the magnet 5 in the moving section c, for example, the steel ball 3 is urged against the rolling groove 11 or 21, and slip resistance is reduced. By increasing, it is possible to suppress the displacement of the steel ball 3 and the retainer 4 with respect to the outer rail 1 and the inner rail 2. In particular, it is possible to suppress the displacement of the retainer 4 during transportation as described above. The magnet 5 may be an electromagnet, but is preferably a permanent magnet in order to easily obtain the slide rail 10, and here it is a permanent magnet. In addition, although rolling resistance also increases with the increase of the above-mentioned slip resistance, it is preferable to increase it moderately so that the high-speed parallel movement of the outer rail 1 and the inner rail 2 is not inhibited. 5 can be adjusted as appropriate depending on the magnetic force magnetized by the magnet 5 and the arrangement of the magnet 5.

  Moreover, although the magnet 5 can also be arrange | positioned in the slide rail 10, it may be necessary to change an internal structure. Therefore, the magnet 5 is disposed on the outside of the slide rail 10 at a position where the steel ball 3 is easily attracted. That is, it is preferable that the steel ball 3 is fixedly disposed close to the back surface of the surface sandwiching the steel ball 3. In the slide rail 10, it arrange | positions in the side part of the outer rail 1 so that the outer surface of the outer rail 1 which is the back surface which pinched | interposed the steel ball 3 may be adjoined. In this case, the magnet 5 can be fixedly arranged without changing the internal structure of the slide rail 10. Further, it is sufficient that a sufficient gap for disposing the magnet 5 is provided between the mounting surfaces 6 and 7, and a simple structure can be obtained.

  In particular, the magnet 5 has a predetermined length in a direction along the slide axis L and is disposed across both the position a and the position b described above, and the steel 5 moves in the moving section c. It is preferable to always face at least a part (see FIG. 2). According to this, even if there are a plurality of steel balls 3 held by the retainer 4 at any position in the moving section c, it can be reliably attracted by the magnet 5.

  Further, as shown in FIG. 3, the magnet 5 is preferably magnetized so that the entire surface facing the outer rail 1, which is the surface that attracts the steel balls 3, has the same pole. According to this, the steel ball 3 can be continuously sucked stably so that the movement of the retainer 4 is not obstructed when the inner rail 2 that is the movable rail is moved, such as when the product is in operation. . Further, since the steel ball 3 is sucked and biased to the rolling groove 11, at least the frictional force with respect to the rolling groove 11 can be increased to prevent the steel ball 3 from being idle, and the retainer accompanying the operation of the inner rail 2. It is possible to suppress the positional deviation of 4, that is, the positional deviation during operation, not during transportation. The magnet 5 may be lengthened and arranged over the entire movement section c.

  In addition, about a rail, a fixed side and a movable side can also be replaced and arrange | positioned. That is, the inner rail 2 is fixed to the fixed mounting surface 6 as a base rail, and the outer rail 1 is fixed to the movable mounting surface 7 as a movable rail. In this case, the magnet 5 is disposed so as to have a gap with respect to the side surface of the outer rail 1 to ensure the movement of the outer rail 1 and is fixed to the mounting surface 6 on the fixed side. The movable mounting surface 7 may be considered as a fixed side, and the mounting surface 6 may be relatively considered as a movable side, and the magnets may be fixedly disposed.

[Example 2]
Next, a slide rail as another embodiment according to the present invention will be described with reference to FIG.

  The slide rail 20 is a so-called three-stage slide rail, and includes two outer rails 1a and 1b and an intermediate rail 2 'disposed between the outer rails 1a and 1b. The intermediate rail 2 ′ has a shape in which the inner rail 2 of the slide rail 10 is turned upside down and overlapped vertically, that is, has a substantially “H” cross section, and faces both inner side surfaces of both the outer rails 1a and 1b. Rolling grooves 21 are provided at four locations on the outer surface. As with the slide rail 10, the outer rails 1a and 1b are provided with rolling grooves 11, and face the rolling grooves 21 of the intermediate rail 2 '. A plurality of steel balls 3 arranged side by side along the slide axis L are sandwiched between the rolling grooves 11 and the rolling grooves 21 and are held by retainers 4a and 4b. The retainers 4a and 4b are respectively disposed between the outer rails 1a and 1b and the intermediate rail 2 '.

  Further, a protrusion 25 ′ for restricting the movement of the retainer 4a, a protrusion 15 for restricting the movement of the retainer 4b, and the like are provided. .

  A magnet 5a is fixedly disposed on the side of the outer rail 1a in the same manner as the slide rail 10 described above. A magnet 5b is also fixedly arranged on the side of the outer rail 1b. At this time, it is preferable that the magnets 5a and 5b are arranged obliquely so as to reduce interference caused by magnetic force. Although not shown in the drawings, the magnets 5a and 5b are in the moving sections of the steel balls 3 held by the retainers 4a and 4b, respectively, and are provided to attract the steel balls 3 held by the retainers 4a and 4b. It is done.

  The slide rail 20 can also suppress the displacement of the retainers 4a and 4b, particularly the displacement during transportation, by increasing the sliding resistance of the steel ball 3 with respect to the rolling groove 11, for example. At this time, the resistance coefficient of the rolling resistance is unchanged, and the rolling resistance is not excessively increased.

  The slide rail 10 and the slide rail 20 described above can be suitably used for products that can suppress the displacement of the retainer during transportation and that can apply only a small driving force. For example, it can be used as a support member for a movable effect member such as a ball ball game machine or a swing-type game machine.

  So far, representative embodiments and modifications based thereon have been described, but the present invention is not necessarily limited thereto, and those skilled in the art will understand the gist of the present invention or the scope of the appended claims. Various alternative embodiments and modifications may be found without departing from the invention.

1 Outer rail 2 Inner rail 3 Steel ball (bearing steel ball)
4 Retainer 5 Magnet 10 Slide rail

Claims (5)

A slide rail comprising a movable rail that is combined with the base rail and slides,
A bearing steel ball is sandwiched between opposing surfaces of the base rail and the movable rail, and the distance of half the length of the bearing steel ball is slid along the slide axis of the movable rail with respect to the base rail. Including a bearing mechanism for rotating the movable rail in a reciprocating manner along the slide axis.
The bearing mechanism includes a plurality of the bearing steel balls, includes retainers that are arranged in a line along the slide axis and maintain a constant distance from each other, and the bearing steel balls are moved within the moving section of the bearing steel balls. A slide rail characterized in that a magnet for attracting a ball is fixedly arranged and the bearing steel ball is biased to the base rail and / or the movable rail.   2. The slide rail according to claim 1, wherein the magnet is fixedly disposed in proximity to a back surface of a surface of the base rail or the movable rail on which the steel ball is sandwiched.   The slide rail according to claim 2, wherein the magnet is fixedly disposed so that at least a part of the bearing steel balls moving in the moving section always face each other.   The slide rail according to claim 2, wherein the magnet is a permanent magnet. 5. The slide rail according to claim 4, wherein the permanent magnet is magnetized so that the entire surface on the side attracting the bearing steel ball has the same pole.

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