JP5140709B2 - Slide rail - Google Patents

Description

  The present invention relates to a slide rail.

  Conventionally, in order to smoothly move a heavy object or the like, a slide rail is known in which a plurality of balls are interposed between a stationary member and a moving member to reduce frictional resistance when the moving member is moved. ing. For example, it is like patent document 1.

  The slide rail described in Patent Literature 1 includes a first rail that is a fixed side member, a second rail that is a movable side member, and a plurality of balls that are aligned and held by a holding member. The first rail is provided with balls that are aligned and held by a holding member so as to be able to roll, and the second rail is provided via the balls. That is, the slide rail is configured such that the ball can roll between the first rail and the second rail. Accordingly, the slide rail can move the second rail smoothly by moving the ball on the first rail and moving the second rail on the ball.

JP 2005-133286 A

  However, in the technique described in Patent Document 1, it is necessary for the holding member to maintain the posture of the holding member by integrally holding a plurality of balls so that the first rail and the second rail do not contact the holding member. is there. For this reason, the slide rail cannot adjust the clearance between the plurality of balls and each rail for each ball. In addition, since the holding member that holds and aligns the plurality of balls is arranged so as to be surrounded between the first rail and the second rail, the first rail and the second rail must be removed unless the second rail is removed. The clearance with the ball cannot be adjusted. For this reason, there existed a problem which the assembly and adjustment of a slide rail become complicated.

  The present invention has been made in view of such problems, and an object thereof is to provide a slide rail that can be easily assembled and adjusted.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in claim 1, the first rail having the opposite side portions, the plurality of free ball bearings fixed toward the inside or the outside of the facing side portions, and the plurality of free ball bearings are movable. The second rail is supported by the guide rail, and the second rail has a V-shaped or semicircular recess in a side view of the second rail facing the plurality of free ball bearings. Are formed in the moving direction, and the plurality of free ball bearings are engaged with the guide grooves .

According to a second aspect of the present invention, each of the plurality of free ball bearings is provided so that a shim can be inserted between a side portion of the first rail and a fixed position in a direction perpendicular to the side portion of the first rail is arbitrary. It is configured to be adjustable.

In Claim 3 , any one of said 1st rail or said 2nd rail is standingly arranged in the base part of a display apparatus, and either one of said 1st rail or said 2nd rail displays information. The display part to be fixed is fixed, and constitutes a support column that allows the display part of the display device to move.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, since the plurality of free ball bearings are independently fixed to the first rail, the positional relationship (gap) between the free ball bearing and the second rail is adjusted for each free ball bearing. Can do. Further, even if the positional relationship between one free ball bearing and the second rail is adjusted, there is little influence on the positional relationship between the other free ball bearing and the second rail. Therefore, assembly and adjustment can be easily performed.

  According to the second aspect, even if there is a variation in the positional relationship between the plurality of free ball bearings and the second rail, the positional relationship can be adjusted for each free ball bearing. Therefore, assembly and adjustment can be easily performed.

  According to the third aspect of the present invention, the second rail is supported so as to be movable only in the moving direction only by engaging the free ball bearing with the guide groove formed in the second rail. Therefore, assembly and adjustment can be easily performed.

  According to the fourth aspect of the present invention, the display unit can be smoothly moved by configuring the support supporting the display unit with a slide rail. Therefore, the display device can be easily assembled and adjusted.

The perspective view from the front which shows the whole structure of the display apparatus which concerns on one Embodiment of this invention. The perspective view from the back which shows the whole structure of the display apparatus which concerns on one Embodiment of this invention. The perspective view which shows the procedure which attaches a free ball bearing to the 1st rail in the slide rail of the display apparatus which concerns on one Embodiment of this invention. The perspective view which shows the procedure which attaches a 2nd rail to the 1st rail in the slide rail of the display apparatus which concerns on one Embodiment of this invention. The upper side view which shows the structure of the slide rail of the display apparatus which concerns on one Embodiment of this invention. The upper side view which shows the structure of the slide rail of the display apparatus which concerns on other embodiment of this invention. The perspective view which shows raising / lowering operation of the display apparatus concerning one Embodiment of this invention. (A) The upper side view which shows the state which the clearance gap has produced between the free ball bearing and the 2nd rail in the slide rail of the display apparatus which concerns on one Embodiment of this invention. (B) The upper side figure which shows the state which adjusted the fixed position of the direction perpendicular | vertical to the front side part of a free ball bearing in the slide rail of the display apparatus which concerns on one Embodiment of this invention. (A) The upper side view which shows the state which has not pressurized the 2nd rail in the slide rail of the display apparatus which concerns on one Embodiment of this invention. (B) The upper side view which shows the state which adjusted and fixed the fixed position of the direction perpendicular | vertical to the front side part of a free ball bearing in the slide rail of the display apparatus which concerns on one Embodiment of this invention.

  First, a display device 1 according to an embodiment of the present invention will be described with reference to FIGS. In the following, the arrow A direction is defined as the forward direction, and the arrow B direction is defined as the upward direction.

  As shown in FIG. 1, the display device 1 is for displaying and transmitting information. The display device 1 includes a base 10, a slide rail 20, a display unit 30, and a manual winch 40.

  The base 10 supports the slide rail 20 and the display unit 30. The base 10 includes a base body 11 formed in a substantially H shape in plan view and a caster 12 disposed on the lower surface of the base body 11. The casters 12 are arranged at the four corners of the base body 11 and are configured to be movable with respect to the ground. In addition, although the base 10 is equipped with the caster 12 in this embodiment, it is not limited to this, What is necessary is just to be able to install the base 10 in the ground.

  The slide rail 20 supports the display unit 30 as a support column of the display device 1. The slide rails 20 are erected at substantially the center in the front-rear direction on both the left and right sides of the upper surface of the base 10 so as to face each other. The slide rail 20 includes a first rail 21, a free ball bearing 22, and a second rail 23. In the slide rail 20, the first rail 21 is erected on the upper surface of the base portion 10, and the second rail 23 is movably supported by the first rail 21 via a free ball bearing 22. The first rail 21 on the left side and the first rail 21 on the right side are connected to the upper end portion of the rear side portion 21r by the first upper beam member 21a, and the upper and lower middle portions of the rear side portion 21r are connected to the first lower beam member. It is connected by 21b. The second rail 23 on the left side and the second rail 23 on the right side are connected to each other at the upper end portion of the opposing surface by the second upper beam member 23a, and at the lower end portion of the opposing surface by the second lower beam member 23b. Connected. Thereby, the 2nd rail 23 of the left side and the right side is comprised so that a movement is possible integrally.

  The display unit 30 displays information to be transmitted. The display unit 30 is formed in a box shape, and is configured such that information can be displayed by an electric bulletin board 31 arranged on the display surface. The display unit 30 is fixed to the left and right second rails 23 and the second upper beam member 23a with brackets (not shown) with the display surface facing forward. Accordingly, the display unit 30 is configured to be movable up and down on the first rail 21 via the second rail 23. In addition, although the electric display board is arrange | positioned in this embodiment on the display surface of the display part 30, it is not limited to this, What is necessary is just to display information.

  As shown in FIG. 2, the manual winch 40 moves a heavy object connected to the wire 42 by winding the wire 42 with a winding handle 41. The manual winch 40 is fixed to the first lower beam member 21b. And the manual winch 40 is connected with the 2nd lower beam member 23b through the pulley 43 arrange | positioned rotatably by the wire 42 at the 1st upper beam member 21a. Thus, the manual winch 40 is configured to move the second rail 23 in the vertical direction by winding or rewinding the wire 42 by the turning operation of the winding handle 41. The manual winch 40 has a built-in ratchet mechanism and can be fixed at an arbitrary winding position. That is, the manual winch 40 is configured so that the display unit 30 fixed to the second rail 23 can be raised and lowered. In the present embodiment, the means for raising and lowering the display unit 30 is not limited to the manual winch 40, and may be an elevation mechanism using an actuator such as a transmission motor or hydraulic equipment.

  Next, the slide rail 20 will be specifically described with reference to FIGS. 3 to 5.

  As shown in FIG. 3, the first rail 21 is a columnar member formed by being bent into a substantially U shape in a sectional view. The first rail 21 has a main body part, and a front side part 21f and a rear side part 21r that are continuously opposed to the main body part. The first rails 21 and 21 are erected at substantially the center in the front-rear direction on both the left and right sides of the upper surface of the base 10 so that the open portions face each other. As described above, in the first rail 21, the upper ends of the rear side portions 21r of the left first rail 21 and the right first rail 21 are connected by the first upper beam member 21a, and the rear side portion 21r. Are connected by the first lower beam member 21b. The first rail 21 is formed on the front side portion 21f and the rear side portion 21r so that a plurality of free ball bearing holes 21c face each other.

  The free ball bearing 22 holds the ball 22a so as to roll freely. The free ball bearing 22 has a retainer 22b configured to hold one of the substantially hemispherical portions of the ball 22a so that the ball 22a can roll and to expose the other substantially hemispherical portion. A flange 22c having an outer diameter larger than the free ball bearing hole 21c of the first rail 21 is formed in the cage 22b.

  The plurality of free ball bearings 22 are rearward (opposed) to a plurality of free ball bearing holes 21c formed in the front side portion 21f of the first rail 21 with the portion exposed from the cage 22b of the ball 22a facing rearward. Inserted from the inside of the front side portion 21f and the rear side portion 21r). Further, the plurality of free ball bearings 22 are forwardly forwarded to the plurality of free ball bearing holes 21c formed in the rear side portion 21r of the first rail 21 with the portion exposed from the cage 22b of the ball 22a facing forward. (Inside the front side portion 21f and the rear side portion 21r facing each other) That is, the plurality of free ball bearings 22 on the front side portion 21f and the plurality of free ball bearings 22 on the rear side portion 21r face the portions of the first rail 21 so that the portions exposed from the cage 22b of the balls 22a face each other. Arranged inside each. The free ball bearing 22 is fixed to the front side part 21f or the rear side part 21r with screws 22d in a state where the flange 22c is in contact with the front side part 21f or the rear side part 21r. In the present embodiment, two free ball bearings 22 are arranged on each of the front side portion 21f and the rear side portion 21r. However, the present invention is not limited to this, and a plurality of free ball bearings may be used.

  As shown in FIG. 4, the second rail 23 is a columnar member formed by being bent into a substantially U shape in a cross-sectional view. The second rail 23 includes a main body part, a front side part 23f and a rear side part 23r continuous with the main body part. The second rail 23 is disposed between the front side portion 21f and the rear side portion 21r of the first rail 21. At this time, the opening portion of the second rail 23 and the main body portion of the first rail 21 face each other, and the front side portion 23f and the front side portion 21f of the first rail 21 face each other. That is, the front side portion 23 f and the rear side portion 23 r are disposed so as to face the free ball bearing 22. In the front side portion 23f and the rear side portion 23r, guide grooves 23c each having a substantially V-shaped dent in a sectional view are extended in the vertical direction at positions facing the free ball bearing 22 respectively.

  As shown in FIG. 5, the second rail 23 is inserted into the first rail 21 from the vertical direction (the black arrow direction in FIG. 4). Thereby, the ball 22a of the free ball bearing 22 fixed to the front side portion 21f of the first rail 21 is engaged with the guide groove 23c of the front side portion 23f. In addition, the ball 22a of the free ball bearing 22 fixed to the rear side portion 21f of the first rail 21 is engaged with the guide groove 23c of the rear side portion 23r. That is, in the second rail 23, the rolling surfaces of the balls 22a are in contact with the inclined surfaces formed in a substantially V shape in sectional view of the guide groove 23c. Therefore, the second rail 23 is supported by the left first rail 21 and the right first rail 21 via the free ball bearing 22 so as to be movable up and down only in the up and down direction as the moving direction. As described above, in the second rail 23, the upper ends of the main body portions of the left second rail 23 and the right second rail 23 are connected by the second upper beam member 23a, and the lower end portion of the main body portion is connected. It is connected by the second lower beam member 23b. In addition, although the several free ball bearing 22 is being fixed to the 1st rail in this embodiment, it is not limited to this, The structure fixed to a 2nd rail may be sufficient.

  Here, the 2nd rail 33 which is another embodiment of the 2nd rail 23 is demonstrated using FIG.

  The second rail 33 differs from the first rail 23 in the shape of the guide groove. The second rail 33 is a columnar member formed by being bent into a substantially U shape in a cross-sectional view. The second rail 33 has a main body part, a front side part 33f and a rear side part 33r continuous with the main body part. The second rail 33 is disposed between the front side portion 21f and the rear side portion 21r of the first rail 21. At this time, the opening portion of the second rail 33 and the main body portion of the first rail 21 face each other, and the front side portion 33f and the front side portion 21f of the first rail 21 face each other. That is, the front side portion 33 f and the rear side portion 33 r are disposed so as to face the free ball bearing 22. In the front side portion 33f and the rear end portion 33r, a guide groove 33c made of a recess having a semicircular shape in section is extended in the vertical direction at a position facing the free ball bearing 22.

  Next, the aspect of the raising / lowering operation of the display apparatus 1 is demonstrated using FIG.

  As shown in FIG. 7, the display device 1 operates integrally with the second upper beam member 23 a and the second lower beam member 23 b by operating the winding handle 41 of the manual winch 40 (see the black arrow). The configured left and right second rails 23 are moved upward or downward. At this time, the second rail 23 is smoothly moved in the vertical direction along the first rail 21 without contacting the first rail 21 by the free ball bearing 22 engaged with the guide groove 23c. Therefore, the display unit 30 fixed to the second rail 23 is moved up and down by the operation of the manual winch (see the white arrow).

  Below, the aspect of adjustment of the slide rail 20 is demonstrated using FIG.8 and FIG.9.

  As shown in FIG. 8A, when a gap D is generated between the ball 22a of one free ball bearing 22 and the guide groove 23c of the second rail 23 among the plurality of free ball bearings 22, As shown in FIG. 8B, the flange 22c of the free ball bearing 22 and the front side portion 21f or the rear side portion 21r of the first rail 21 to which the free ball bearing 22 is fixed (in this embodiment, the front side portion 21f). ) To adjust the fixed position in the direction perpendicular to the front side portion 21f or the rear side portion 21r of the free ball bearing 22. As a result, the gap D between the ball 22a of the free ball bearing 22 and the guide groove 23c can be eliminated. At this time, the shim 51 can be inserted from the open portion of the first rail 21 without removing the second rail 23 from the first rail 21. Further, since the plurality of free ball bearings 22 are independently fixed to the first rail 21, the positional relationship between the balls 22a of the other free ball bearings 22 and the guide grooves 23c is not affected.

  As shown in FIG. 9A, when pressurizing the second rail 23 to increase the rigidity of the slide rail 20, as shown in FIG. 9B, the flange 22c of each free ball bearing 22 and the free ball Shims 52 and 52 corresponding to the positional relationship between the balls 22a of the free ball bearings 22 and the guide grooves 23c are provided between the front side portion 21f or the rear side portion 21r of the first rail 21 to which the bearing 22 is fixed. The fixed position in the direction perpendicular to the front side portion 21 f or the rear side portion 21 r of the free ball bearing 22 is adjusted by inserting from the open portion of the one rail 21. Thus, even if the positional relationship between the ball 22a and the guide groove 23c of each free ball bearing 22 varies, substantially the same pressure is applied from the free ball bearing 22 to the second rail 23 (FIG. 9B, white arrows). ) Can be added.

As described above, the first rail 21 having the front side portion 21f and the rear side portion 21r, which are opposite side portions, and a plurality of pieces fixed toward the inside or outside of the front side portion 21f and the rear side portion 21r of the first rail 21. The free ball bearing 22 and a second rail 23 movably supported by the plurality of free ball bearings 22 are provided.
With this configuration, each free ball bearing 22 is fixed to the first rail 21, so that the positional relationship (gap D) between the free ball bearing 22 and the second rail 23 can be adjusted for each free ball bearing 22. Can be done. Further, even if the positional relationship between one free ball bearing 22 and the second rail 23 is adjusted, the influence on the positional relationship between the other free ball bearing 22 and the second rail 23 is small. Therefore, assembly and adjustment can be easily performed.

Further, the plurality of free ball bearings 22 are configured such that the fixed positions in the direction perpendicular to the front side portion 21f and the rear side portion 21r of the first rail 21 can be arbitrarily adjusted.
With this configuration, even if there is a variation in the positional relationship between the free ball bearing 22 and the second rail 23, the positional relationship can be adjusted for each free ball bearing 22. Therefore, assembly and adjustment can be easily performed.

The second rail 23 is formed with a guide groove 23c in the moving direction in the front side portion 23f and the rear side portion 23r, which are side portions of the second rail 23 facing the free ball bearing 22, and a plurality of free ball bearings. 22 is engaged with the guide groove 23c.
With this configuration, the second rail 23 is supported so as to be movable only in the vertical direction, which is the moving direction, simply by engaging the free ball bearing 22 with the guide groove 23 c formed in the second rail 23. Therefore, assembly and adjustment can be easily performed.

Moreover, either the 1st rail 21 or the 2nd rail 23 is standingly arranged in the base 10 of the display apparatus 1, and the other of the 1st rail 21 or the 2nd rail 23 is a display which displays information. The unit 30 is fixed and constitutes a support column that allows the display unit 30 of the display device 1 to move.
By comprising in this way, the display part 30 can be moved smoothly by comprising the support | pillar which supports the display part 30 with the slide rail 20. FIG. Therefore, the display device 1 can be easily assembled and adjusted.

DESCRIPTION OF SYMBOLS 1 Display apparatus 20 Slide rail 21 First rail 21f Front side part 21r Rear side part 22 Free ball bearing 23 Second rail

Claims (3)

A first rail having opposing sides;
A plurality of free ball bearings fixed toward the inside or the outside of the opposing side parts;
A second rail movably supported by the plurality of free ball bearings;
Equipped with,
The second rail is
A guide groove made of a V-shaped or semicircular dent in a cross-sectional view is formed on a side portion of the second rail facing the plurality of free ball bearings in a moving direction, and the plurality of free ball bearings are formed in the guide groove. Slide rail engaged with . The plurality of free ball bearings are:
The slide according to claim 1 , wherein a shim is provided so as to be insertable between a side portion of the first rail and a fixing position in a direction perpendicular to the side portion of the first rail can be arbitrarily adjusted. rail. Either the first rail or the second rail is
Standing at the base of the display device,
Either the first rail or the second rail is
A display for displaying information is fixed,
Slide rail according to claim 1 or請項2 constituting the strut which allows moving the display unit of the display device.

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