JP2020106136A - Guide device - Google Patents

Abstract

To provide a guide device which can easily perform assembling work by preventing the interference of rolling bodies with a rolling groove at the assembling of the guide device even if surface treatment such as electrolyte plating is applied on a constituent component of the guide device, and a clearance between a first member and a second member is minimized.SOLUTION: A guide device comprises a first member having an accommodation groove, and a second member movably assembled along the accommodation groove. The first member and the second member are assembled to each other via a plurality of rolling bodies, the accommodation groove has a pair of sidewall faces facing each other, and a bottom face for connecting one-side ends of the sidewall faces, first rolling grooves in which the plurality of rolling bodies can roll are formed at the sidewall faces, second rolling grooves corresponding to the first rolling grooves are formed at faces facing the sidewall faces of the second member, and an insertion auxiliary part is continuously formed at an end part of at least either of the first rolling grooves or the second rolling grooves in a longitudinal direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to a guide device, and particularly to a first member in which a housing groove is formed along the longitudinal direction, and a first member that is arranged so as to sandwich the first member, and that extends along the housing groove via a plurality of rolling elements. The present invention relates to a guide device having a plurality of second members slidably assembled.

In order to smoothly move movable members such as drawers and doors, it is known to attach a guide device between a shelf or a cabinet and the movable member. Such a guide device includes a fixed side rail attached to the shelf or cabinet side and a moving side rail attached to the movable member side, and the moving side rail interposes rolling elements such as balls with respect to the fixed side rail. It is slidably assembled.

Various forms of such a guide device are known, for example as described in US Pat. No. 6,037,048, between which at least one first rotary element and at least one second rotary element are arranged. At least one withdrawing rail having at least one running surface, the rolling element being rotatably held between at least one rolling element cage, at least one first rolling element and at least one first rolling element of the rolling element cage. The two rolling elements have the same nominal diameter, at least one running surface has a free running segment, in which the at least one first rotating element is located in the retracted state of the guiding device, Are known to have a greater distance within the free running segment than to the outside of the free running segment.

Japanese Patent Publication No. 2017-520320

In the conventional guide device, when the moving-side rail is mounted on the fixed-side rail, it is necessary to mount the moving-side rail via a plurality of rolling elements between the fixed-side rail and the moving-side rail. Therefore, as shown in FIG. An insertion portion 125 formed wide in the width direction is formed at one end portion of the rolling groove 124 formed in the side rail 120 that does not affect the stroke of the moving side rail, and a holding member in which a plurality of rolling elements are assembled to the insertion portion 125 is formed. The moving-side rail 130 is assembled in a state in which the container 140 is temporarily placed, and the moving-side rail 130 is moved toward the other end of the rolling groove 124. It is assembled by interposing between the rails 130.

Here, as shown in FIG. 8, the insertion portion 125 was formed by processing the rolling groove 124, and the connecting portion 126 between the rolling groove 124 and the insertion portion 125 was formed in a sharp shape. Further, since the guide device is required to be able to apply a predetermined load, the fixed side rail and the movable side rail are subjected to surface treatment such as electrolytic plating to improve the strength.

However, if the connecting portion 126 is formed in a sharp shape as shown in FIG. 8, the current density in the sharp portion becomes high as a characteristic of electrolytic plating, and it is impossible to form a uniform plating thickness. There is a problem, and when electrolytic plating is applied to the conventional guide device, the plating thickness in the vicinity of the connecting portion 126 becomes thick, and the plating and rolling elements interfere with this plating thickness. There was a problem that I could not do it.

Further, even if the electroplating is not performed, the gap between the fixed side rail 120 and the moving side rail 130 may be minimized in order to improve the guide accuracy of the guide device, but this gap is minimized. However, there is a problem in that it is difficult to assemble due to the interference between the rolling groove 124 and the rolling elements.

The present invention has been made to solve the above-mentioned problems, and performs surface treatment such as electrolytic plating on the components of the guide device, and minimizes the gap between the fixed side rail and the moving side rail. Even if the above is intended, it is an object of the present invention to provide a guide device that prevents interference between the rolling groove and the rolling element during the assembly of the guide device and can easily perform the assembly work.

A guide device according to the present invention for solving the above-mentioned problems includes a first member having a housing groove formed along a longitudinal direction thereof, and a second member movably assembled along the housing groove, The one member and the second member are assembled through a plurality of rolling elements, and the accommodation groove has a pair of side wall surfaces facing each other and a bottom surface connecting one ends of the side wall surfaces, A first rolling groove on which the plurality of rolling elements can roll is formed along the longitudinal direction on the side wall surface, and the first rolling groove formed on the side surface of the second member facing the side wall surface is the first rolling groove. A second rolling groove corresponding to one rolling groove is formed, and an insertion assisting portion is continuously formed at a longitudinal end portion of at least one of the first rolling groove and the second rolling groove. It is characterized by being done.

According to the guide device of the present invention, since the insertion assisting portion is continuously formed at the longitudinal end portion of at least one of the first rolling groove and the second rolling groove, the electrolytic guiding device Even if a surface treatment such as plating is performed, it is possible to prevent the current density in the insertion assisting portion from increasing, so that it is possible to form a uniform plating thickness and the rolling element and the second member interfere with each other. Without doing so, even when the gap between the first member and the second member is minimized, it is possible to eliminate the difficulty in assembling due to the interference between the first member and the rolling element by the insertion assisting portion.

The perspective view of the slide rail concerning the embodiment of the present invention. Sectional drawing of the slide rail which concerns on embodiment of this invention. FIG. 3 is a perspective view for explaining the structure of the slide rail according to the embodiment of the present invention. FIG. 3 is an enlarged view of the insertion assisting portion of the slide rail according to the embodiment of the present invention. FIG. 3 is a perspective view for explaining the structure of the inner member of the slide rail according to the embodiment of the present invention. The perspective view which shows the modification of the slide rail which concerns on embodiment of this invention. The figure which shows the structure of the conventional slide rail. The enlarged view of the rolling groove of the conventional slide rail.

Hereinafter, an embodiment of a slide rail as a guide device according to the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the invention according to each claim, and all combinations of the features described in the embodiments are not necessarily essential to the solution means of the invention. ..

1 is a perspective view of a slide rail according to an embodiment of the present invention, FIG. 2 is a sectional view of a slide rail according to an embodiment of the present invention, and FIG. 3 is a slide according to an embodiment of the present invention. FIG. 5 is a perspective view for explaining the structure of the rail, FIG. 4 is an enlarged view of an insertion assisting portion of the slide rail according to the embodiment of the present invention, and FIG. 5 is a slide rail according to the embodiment of the present invention. FIG. 7 is a perspective view for explaining the structure of the inner member, and FIG. 6 is a perspective view showing a modified example of the slide rail according to the embodiment of the present invention.

As shown in FIGS. 1 and 2, the slide rail 10 according to the present embodiment has a center member 20 as a first member having accommodation grooves 21 formed on both side surfaces along the longitudinal direction, and the accommodation groove 21 along the accommodation grooves 21. And a pair of inner members 30 as a second member that are slidably assembled.

The accommodation groove 21 of the center member 20 is formed by a bottom surface 22 and side walls 23 standing upright from both ends of the bottom surface 22, and the bottom surface 22 connects one ends of the side walls 23 to each other. By forming the accommodation groove 21 on both side surfaces of the center member 20, the cross section is formed in a substantially I shape. A first rolling groove 24 is formed in the side wall 23 along the longitudinal direction.

The inner member 30 is a member having a rectangular cross section, and has a side surface 32 facing the side wall 23, and a second rolling groove 31 corresponding to the first rolling groove 24 is formed on the side surface 32. ing.

The center member 20 and the inner member 30 are assembled via a rolling element 41 such as a ball, and the rolling element 41 has a first rolling groove 24 formed in the side wall 23 and a second rolling element formed in the side surface 32. The rolling element rolling groove formed between the grooves 31 is rotatably assembled, and is held by the retainer 40 to prevent the rolling element 41 from falling off and the rolling elements 41 from colliding with each other.

The retainer 40 is a plate-shaped member in which a plurality of holding holes for holding the plurality of rolling elements 41 are formed along the longitudinal direction, and is preferably formed of, for example, a synthetic resin or a sheet metal of a plate material.

The center member 20 and the inner member 30 are made of members having a predetermined strength, and are preferably made of, for example, a synthetic resin, a metal such as stainless steel or an aluminum alloy. Further, when a synthetic resin is used, it is preferable that electrolytic plating is performed as the surface treatment, and when a metal is used, electroless plating is preferable. By performing the surface treatment, the strength of the member can be improved.

As shown in FIG. 3, the center member 20 is provided with an insertion portion 25 that extends in the width direction from the first rolling groove 24 on one end side of the first rolling groove 24 formed along the longitudinal direction. .. It is preferable that the length of the insertion portion 25 along the longitudinal direction is substantially the same as the length of the retainer 40. Further, as shown in FIG. 4, an insertion assisting portion is formed at the end of the first rolling groove 24 in the longitudinal direction, and the insertion assisting portion gently curves the first rolling groove 24 and the insertion portion 25. Is formed as a connecting portion 26 that is formed in a curved shape and that is continuous with.

Here, the connecting portion 26 is formed in a gently curved shape so that the current density in the connecting portion 26 does not increase when electrolytic plating is performed. The shape of the connecting portion 26 may be any shape as long as the current density does not increase, but it may extend from the end of the first rolling groove 24 toward the insertion portion 25, for example. It is preferable to form the gentle curve and the gentle curve extending from the end of the insertion portion 25 toward the first rolling groove 24 so as to be connected to each other.

Thus, by forming the connecting portion 26 in a gentle curved shape, even when the center member 20 is electrolytically plated, electrolytic plating is performed along the longitudinal direction of the first rolling groove 24. Even if it is done, the plating thickness of the first rolling groove 24 can be made substantially uniform including the plating thickness of the connecting portion 26. Since the plating thickness can be made substantially uniform as described above, even when the center member 20 and the inner member 30 are assembled via the rolling elements 41, the retainer 40 temporarily placed in the insertion portion 25 is When being moved to the rolling groove 24, the rolling element 41 assembled to the retainer 40 does not interfere with the first rolling groove 24 due to the plating thickness, and is smoothly moved in the direction of the first rolling groove 24 to move the inner member. The member 30 can be assembled.

Here, an assembling method when a plurality of rolling elements 41 are interposed between the first rolling groove 24 of the center member 20 and the second rolling groove 31 of the inner member 30 will be described. As shown in FIG. 3, the retainer 40 having the plurality of rolling elements 41 assembled in the insertion portion 25 of the center member 20 is temporarily placed along the side walls 23, 23.

In this state, the inner member 30 is assembled between the retainers 40, 40. At this time, the plurality of rolling elements 41 assembled to the retainer 40 are rotatably assembled in the second rolling groove 31 of the inner member 30.

Next, by moving the inner member 30 inward of the center member 20 along the longitudinal direction, the retainer 40 is moved to the first rolling groove 24 together with the inner member 30, and the first rolling groove of the center member 20 is moved. It is possible to assemble the inner member 30 and the center member 20 via the plurality of rolling elements 41 between the second rolling groove 31 of the inner member 30 and 24. At this time, since the insertion portion 25 and the first rolling groove 24 form an insertion assisting portion having a gently curved connecting portion 26, and the surface treatment is performed so that the plating thickness is also uniform, The rolling element 41 can be smoothly moved from the insertion portion 25 to the first rolling groove 24.

Although the slide rail 10 according to the above-described embodiment has been described with respect to the case where the synthetic resin material is electrolytically plated, the center member 20 and the inner member 30 are made of metal, and the center member 20 and the inner member 30 are formed. It can also be applied when the gap between and is minimized. When a metal is used for the center member 20 and the inner member 30, electroless plating is preferably used as the surface treatment, and therefore uneven plating thickness due to difference in current density of applied current like synthetic resin. Although there is no difficulty in assembling due to the above, the first rolling groove 24 is obtained as a result of minimizing the gap between these members by improving the precision of various sizes of the center member 20 and the inner member 30. The dimension between the second rolling groove 31 and the second rolling groove 31 is also minimized, and it may be very difficult to incorporate the rolling element 41 therein.

In this case, as shown in FIG. 5, an insertion assisting portion composed of a curvilinear curved portion 33 narrowing in the opposing direction of the pair of side wall surfaces is formed at the longitudinal end portion of the second rolling groove 31 of the inner member 30. It is preferable. The curved portion 33 is configured as a curved surface that gently extends from the second rolling groove 31 toward the center of the inner member 30 in the width direction similarly to the connecting portion 26, and the curved portion 33 allows the rolling element 41 to smoothly move to the first position. It can be introduced into the second rolling groove 31.

The connecting portion 26 and the curved portion 33 may be formed on each of the center member 20 and the inner member 30, but in consideration of the dimensional accuracy and the assembling property of the center member 20 and the inner member 30, for example, Alternatively, only the curved portion 33 may be formed on the inner member 30.

Further, as shown in FIG. 6, by forming a chamfer 27 in a portion of the connecting portion 26 that is continuous with the first rolling groove 24, the rolling element 41 can be introduced more smoothly from the insertion portion 25 into the first rolling groove 24. You may form so that it may be formed.

Since the slide rail 10 according to the present embodiment has the insertion portion 25 formed at one end of the center member 20, the stroke amount from the other end of the first rolling groove 24 to the vicinity of the connecting portion 26 is sufficient. It becomes possible to secure it.

In addition, in the above-described embodiment, the case where the length in the longitudinal direction of the insertion portion and the length of the retainer are substantially the same has been described, but the length of the insertion portion may be formed longer or shorter than the length of the retainer. I don't mind. It is apparent from the description of the scope of claims that a form added with such changes or improvements can be included in the technical scope of the present invention.

10 slide rail (guide device), 20 center member (first member), 21 housing groove, 22 bottom surface, 23 side wall, 24 first rolling groove, 25 insertion portion, 26 connecting portion (insertion auxiliary portion), 30 inner member (2nd member), 31 2nd rolling groove, 33 curved part (insertion assistance part), 41 rolling element.

Claims (6)

A first member having a housing groove formed in the longitudinal direction;
A second member movably assembled along the accommodation groove,
The first member and the second member are assembled through a plurality of rolling elements,
The accommodation groove has a pair of side wall surfaces facing each other and a bottom surface connecting one ends of the side wall surfaces,
On the side wall surface, a first rolling groove in which the plurality of rolling elements can roll is formed along the longitudinal direction,
A second rolling groove corresponding to the first rolling groove is formed on a surface of the second member facing the side wall surface,
A guide device, wherein an insertion assisting portion is continuously formed at an end portion in the longitudinal direction of at least one of the first rolling groove and the second rolling groove. In the guide device according to claim 1,
At one end of the first rolling groove, an insertion portion extending in the longitudinal direction and extending in the opposite direction of the pair of side wall surfaces is formed continuously.
The guide device, wherein the insertion assisting portion includes a connecting portion that smoothly connects one end of the first rolling groove and a continuous portion of the insertion portion. In the guide device according to claim 1,
The guide device, wherein the insertion assisting portion is formed at one end of the second rolling groove as a curvilinear curved portion that narrows in a direction in which the pair of side wall surfaces face each other. In the guide device according to claim 2,
The guide device, wherein the connecting portion is a chamfer formed between the first rolling groove and the insertion portion. The guide device according to any one of claims 1 to 4,
A guide device, wherein the first rolling groove is surface-treated. In the guide device according to claim 5,
The guide device, wherein the surface treatment is electrolytic plating.

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