JP2004344189A - Duplex guide rail mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a duplex guide rail mechanism operated smoothly and quietly. <P>SOLUTION: In the duplex guide rail, a main body projection part 10T is provided on the front part of a main body side rail 10, an association roller 20N is freely rotatably attached at a position of an intermediate rail corresponding to a position P2' on the front side by a prescribed amount δ from a rear end position P1' of the main body projection part in the pull-out completion state of the intermediate rail 12 to the main body side rail, and a pull-out body projection part 14T is provided over a prescribed range δ on the rear side from a position P1 of a pull-out body side rail corresponding to a position of the association roller in the state where the retreat of the pull-out body side rail 14 to the intermediate rail is completed. In the duplex guide rail, connection mechanisms 30 and 14H are provided such that the intermediate rail and the pull-out body side rail are moved together in the process of pulling out a pull-out body from a housing completed state and having the association roller reach the main body projection part and the process of completing housing after the association roller separates from the main body projection part and they are separated at the other time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multiple guide rail mechanism for smoothly pulling out a drawer such as an office furniture or a home furniture such as a cabinet and storing the drawer again. The drawer represents a general thing to be drawn, and includes a drawer, a table to be drawn, and the like.
[0002]
[Prior art]
A double guide rail mechanism for a cabinet or the like has a drawer side rail attached to the drawer side, a main body side rail attached to the housing (main body) side, and a cylindrical (cylindrical) between these rails. There is a mechanism having an intermediate rail relatively movable with a roller or a spherical ball interposed therebetween. For example, Patent Literature 1 below discloses an example of such a mechanism. As described in this document, when the documents are drawn out in the order shown in FIGS. 6 (a), (b2) and (c) and stored in the reverse order, the load on a predetermined rolling element can be reduced. There is. That is, when the drawer is pulled out, the drawer side rail and the intermediate rail are pulled out together, and when the drawer side rails and the intermediate rail are stored together, the load on the predetermined rolling element can be reduced.
[Patent Document 1]
Japanese Patent Publication No. 8-1213
[Problems to be solved by the invention]
However, when the drawer is pulled out in this order, when the intermediate rail is stopped relative to the main body side rail, a kind of impact occurs to stop the drawer side rail that is still being drawn out due to the reaction. This causes a hindrance to smooth operation and quiet operation.
It is therefore an object of the present invention to provide a double guide rail mechanism which operates smoothly and quietly even in such a case.
[0004]
[Means for Solving the Problems]
In view of the above object, according to the first aspect, a main body side rail provided on the main body side and provided between the main body and a drawer body housed in the main body for smoothly pulling out the drawer body is provided. An intermediate rail that is relatively movable with a rolling element interposed therebetween and a drawer-side rail that is relatively movable with another rolling element interposed between the intermediate rail and is provided on the drawer side. A guide rail mechanism, which corresponds to a main body convex portion provided at a front portion of the main body side rail, and a predetermined amount front side position from a rear end position of the main body convex portion in a state where pulling out of the intermediate rail with respect to the main body side rail is completed. In the state where the interlocking roller is rotatably attached to the position of the intermediate rail, and the drawer side rail has completed retreating with respect to the intermediate rail, the rear side position from the position of the drawer side rail corresponding to the position of the interlocking roller The drawer body convex part is provided over the range, the drawer is pulled out from the storage completed state and the interlocking roller reaches the main body convex part, and in the process where the drawer is stored, the interlocking roller is From the state where the middle rail and the drawer side rail move together, and the other is provided with a connecting mechanism that separates, and the storage of the drawer has been completed When the interlocking roller provided on the intermediate rail is pulled out and reaches the main body convex portion, the interlocking roller comes into contact with the main body convex portion and the drawer body convex portion.
The rolling elements include a disk-shaped or columnar (cylindrical) roller and a spherical ball.
[0005]
When the drawer is pulled out of the storage completed state, the drawer side rail and the intermediate rail are pulled out together by the action of the coupling mechanism. When the interlocking roller attached to the intermediate rail reaches the main body convex portion of the main body side rail, the interlocking roller starts to contact so as to be sandwiched between the main body convex portion and the drawer body convex portion, and the intermediate rail and the drawer body side rail come into contact with each other. Connection is lost. When the drawer is further pulled out from this position, the interlocking roller is rotated by the friction caused by the forward movement of the drawer projection of the drawer side rail. At this time, since the interlocking roller is also in contact with the convex portion of the main body, when the roller is rolled on the convex portion and reaches the front position by a predetermined amount, this is the position where the intermediate rail is completely pulled out. The drawer is completed after the drawer side rail is further drawn out with respect to this intermediate rail. In this process, when the interlocking roller starts rolling, the forward speed of the intermediate rail is reduced to half of the pulling speed of the drawer side rail for a well-known reason. Therefore, when the intermediate rail is stopped, only the half speed is stopped, so that the impact at the time of stopping is reduced as compared with the case where the intermediate rail having the same speed as the drawer side rail is stopped, and Can pull out the drawer smoothly and quietly.
[0006]
According to a second aspect of the present invention, there is provided the double guide rail mechanism according to the first aspect, wherein a peripheral portion of the interlocking roller that comes into contact with each convex portion is formed of a soft elastic material.
Because it is formed of a soft elastic material, when it is located between the main body protrusion and the drawer body protrusion and comes into contact between the two protrusions, the peripheral part can be deformed, Contact is assured. Moreover, since it is an elastic material, it can be restored.
[0007]
According to a third aspect of the present invention, there is provided the multiple guide rail mechanism according to the first or second aspect, wherein the interlocking roller has a gap between the interlocking roller and a pivot provided on the intermediate rail so as to be movable in a radial direction of the pivot.
In the process of pulling out and storing the drawer, when the interlocking roller is positioned between the main body protrusion and the drawer protrusion, the rotation center (axis) position of the interlocking roller is exactly halfway between the two protrusions for accuracy. Even if it is not located at the position, if there is the above gap, the position can be automatically adjusted and the contact can be made between the two convex portions. Further, in the case where the drawer is dependent on the invention of claim 2, the state in which the drawer is housed is long in time, and in this state, the periphery of the interlocking roller of the soft elastic material is longer than the elastic material. It can be prevented from being deformed by being continuously pressed by the convex portion, and can be used for a long time.
[0008]
According to a fourth aspect of the present invention, there is provided the multiple guide rail mechanism according to any one of the first to third aspects, wherein the predetermined amount defining the position of the interlocking roller and the predetermined range of the drawer projection are short.
If the predetermined amount that defines the position of the interlocking roller is short, the length of movement of the intermediate rail after being separated from the drawer side rail when pulling out the drawer will be short, and when storing, Since the predetermined range of the drawer body convex portion is short, the intermediate rail starts to move from a state in which the drawer body side rail is almost stored in the intermediate rail, and the movement of the rolling element between the intermediate rail and the main body side rail. The load decreases. Therefore, the length of the intermediate rail that moves separately from the drawer side rail is short when both the drawer and the retractor are retracted, and the overhang state in which the drawer side rail (ie, the drawer) is drawn far forward with respect to the intermediate rail. Since the intermediate rail does not move, the load on the rolling elements between the intermediate rail and the main body side rail is only a static load in the overhang state, and a more severe dynamic load can be avoided. Therefore, the durability of the rolling elements (generally, a plurality of rolling elements are provided, but especially the rolling elements located near the front end of the main body side rail) is improved.
[0009]
According to the fifth aspect, the connecting mechanism has an arm-shaped connecting tool rotatably mounted on the intermediate rail around the connecting tool pivot, and the connecting tool is engaged with a side facing the drawer body side rail. A protrusion is provided, and the engaging protrusion can enter a recess provided at a predetermined position of the drawer body rail when the drawer body side rail is completely retracted with respect to the intermediate rail. A bulging portion is provided on the side facing the rail, and the amount of bulging of the bulging portion is determined in a state where the engaging convex portion enters the concave portion and the bulging portion faces the main body side rail. When the protrusion is pulled out and the interlocking roller reaches the main body convex portion, the protrusion is released from the restraint of the main body side rail. 5. The double guide according to claim 1, wherein a pivot is mounted. To provide Lumpur mechanism.
1 illustrates one form of a coupling mechanism.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.
FIG. 1 is a side view of a guide rail mechanism in which a drawer of a cabinet (not shown) having a double guide rail mechanism according to the present invention is housed, FIG. 2 is an enlarged view of a main part thereof, and FIG. It is an expanded cross-sectional view by -C. In the cross section, on one end side (lower side) of the intermediate rail 12, a housing-side rail 10 having a rectangular shape so as to surround the one end and having one corner opened is provided with a rolling element (not shown). (Assembly) of rollers are disposed in the front-rear direction with a plurality of rollers interposed therebetween. On the other end side (upper side), a drawer-side rail 14 having a rectangular shape so as to surround the other end and having an opening at one corner is provided as another rolling element (not shown). A plurality of (assembly) of rollers are arranged and interposed in the front-rear direction.
[0011]
The housing-side rail is fixed to a housing of a cabinet (not shown) via a bracket member 11, and the drawer-side rail is fixed to a drawer (not shown).
In this example, a housing protrusion 10T protruding toward the drawer-side rail 14 is provided near the front end of the housing-side rail 10. On the other hand, a housing-side A drawer protrusion 14T protruding toward the rail is provided. In the completely retracted state of the drawer, a bush 22 as a pivot is attached to the intermediate rail at a position relative to the drawer projection. Outside the bush 22, an interlocking roller 20 having an inner diameter slightly larger than the outer diameter of the bush is rotatably provided.
[0012]
The interlocking roller 20 has a frame portion 20H made of a hard synthetic resin material such as polyacetal, and a portion that comes into contact with the drawer convex portion or the housing convex portion made of a soft elastic synthetic resin material such as urethane. And a contact portion 20N. However, the widest range of the present invention is that the inner diameter of the interlocking roller may coincide with the outer diameter of the bush in a range where the interlocking roller is rotatable as long as the interlocking roller is formed with high accuracy. It does not need to be divided into any parts, and may be formed of any one of the members. Further, in this example, the rear portion of the arm-shaped connecting member 30 is mounted at a position concentric with the bush 22, and the bush is rotatable as a pivot position. However, the bush can be mounted at another location. .
[0013]
In the stored state, the contact portion 20N of the interlocking roller slightly abuts on the drawer convex portion 14T or has a slight gap, and the interlocking roller moves to the housing side rail side (lower side) as shown in FIG. When pressed down, a gap 23 is formed below the bush. However, the lower part of the contact portion 20N does not contact the rail on the housing side, and has a gap.
[0014]
In the retracted state of the drawer, the engaging projection 30K at the front end of the connecting tool has entered a concave portion 14H (hole) provided at a predetermined position on the drawer side rail. Further, a bulging portion 30T is formed on the lower surface of the coupling tool on the opposite side (lower side) of the engaging convex portion, and when the engaging convex portion enters the concave portion 14H, the upper surface of the housing-side rail is formed. Are in contact with or close to the bulging portion, and the engaging convex portion cannot separate from the concave portion. Therefore, when the drawer is pulled out, the drawer side rail and the intermediate rail move forward together.
[0015]
When the drawer is pulled out and the interlocking roller 20 attached to the intermediate rail reaches the position of the rear end portion P1 'of the upper surface of the housing convex portion 10T as shown in FIG. You are released from restraint by. Therefore, when the drawer (drawer side rail) is to be further pulled out, the engagement with the concave portion is released such that the engaging convex portion 30K of the connecting tool is pushed out to the rear edge of the concave portion 14H. For this reason, the intermediate rail and the drawer side rail can be moved separately, and in the state of FIG. 4, the contact portion 20N of the interlocking roller is sandwiched between the drawer protrusion 14T and the housing protrusion 10T. The rolling contact between the two rails starts. For this reason, the interlocking roller 20 starts to rotate about the bush 22 as a pivot, and for a well-known reason, the intermediate rail is reduced to half the drawing speed of the drawer side rail. The position of the drawer-side rail corresponding to the position of the interlocking roller in the state of FIG. 4 (the center of the drawer protrusion 14T) is indicated by P1.
[0016]
FIG. 5 shows a somewhat pulled-out state. In FIG. 5, the position P2 of the drawer side rail corresponding to the position of the interlocking roller is the rear end position of the lower surface of the drawer convex portion, and is a view at the moment when the rolling of the interlocking roller is about to end. On the other hand, the position of the housing-side rail corresponding to the position of the interlocking roller in this state is indicated by P2 ', which is the upper surface of the housing protrusion. The distance δ between the positions P1 and P2 of the drawer protrusion and the distance δ between the positions P1 ′ and P2 ′ of the housing protrusion are the same. Theoretically, the housing projection and the drawer projection required in the present invention are located between the positions P1 'and P2' and between the positions P1 and P2, respectively, Is for margin. Therefore, the predetermined amount and the predetermined range in the first and fourth aspects of the present invention are between the positions P1 'and P2' and between the positions P1 and P2.
[0017]
The state shown in FIG. 5 is the rolling end position of the interlocking roller, and is also the pull-out completion position of the intermediate rail. Although not shown, the middle rail is pulled out at a predetermined position, such as the rear end of the intermediate rail, to be engaged with the engaging projection provided at a corresponding position on the housing-side rail. It may be stopped by other means, and it can be easily configured by those skilled in the art. Therefore, if the drawer is further pulled out thereafter, only the drawer side rail 14 moves forward together with the drawer. From the state of FIG. 4 to the state of FIG. 5, the speed of the intermediate rail is half of the drawing speed as described above, and the impact when the intermediate rail stops in the state of FIG. This can be alleviated as compared with the case where the intermediate rail that has been moving at a stop is stopped. Therefore, the drawer can smoothly and quietly perform the drawer operation.
[0018]
FIG. 6 is an enlarged cross-sectional view taken along the line FF of FIG. 4, and the same is true up to the state of FIG. Only parts different from FIG. 3 will be described. In FIG. 6, (the contact portion of) the interlocking roller is sandwiched between the drawer convex portion and the housing convex portion, and is slightly deformed by the amount of the pressing, so that the rolling can be reliably performed between the two convex portions. Therefore, the gap 23 ′ between the bush 22 and the bush 22 becomes substantially uniform without being biased to one side, and the interlocking roller 20 rolls concentrically with the bush as the pivot.
[0019]
If the distance dimension δ is short, for example, 6 mm, the drawer-side rails are pulled out together by the action of the connector 30 of the connection mechanism and the recess 14H until the intermediate rail is pulled out. Therefore, it is possible to prevent the drawer-side rail (and the heavy drawer) from being pulled out with respect to the middle rail and to prevent the middle rail from moving in an overhang state, and to reduce the dynamic load on the rolling elements between the middle rail and the housing-side rail. Can be smaller.
[0020]
In the present invention, it is possible to increase the distance dimension δ to, for example, 100 mm. In this case, the drawer side rail moves forward with respect to the intermediate rail from a position about 100 mm before the intermediate rail is completely pulled out. Because the drawer-side rail moves forward at twice the speed of the intermediate rail, a large dynamic load is applied to the rolling elements between the intermediate rail and the housing-side rail while being in an overhang state. The durability of the rolling elements decreases.
[0021]
In addition, when the drawer is stored from the drawn-out state, the drawer side rail is free to the intermediate rail until the drawer protrusion 14T starts to contact the contact portion 20N of the interlocking roller as shown in FIG. It can move backward in the storage direction. Further, thereafter, it moves at a speed ratio of 2: 1 by the action of the interlocking roller until the state of FIG. 4 is reached, and thereafter, the connecting tool 30 is locked in the concave portion 14H and retreats together with the intermediate rail. The storage is completed.
[0022]
In the case of the free retreat movement of the drawer side rail with respect to the intermediate rail, a force for retreating the intermediate rail via a rolling element interposed between the drawer side rail and the intermediate rail may act. Since the rolling element interposed between the drawer side rail and the drawer side rail is overhanging with the drawer, a strong pressing force is applied to the rolling element interposed between the drawer side rail and the rolling element, so that even if the drawer side rail moves backward, The rails do not move easily and are usually stationary. Therefore, in such a case, the drawer side rail is stored and returns to the state of FIG. 5, and the intermediate rail starts retreating at half the speed of the retreat storing speed of the drawer side rail by the action of the interlocking roller. Move to the state of.
[0023]
If the intermediate rail moves backward so far, the connecting tool 30 is pushed up by the rear surface 30TF of the bulging portion 30T interfering with the front end edge 10F of the housing-side rail, and the engaging convex portion 30K enters the concave portion 14H. , The intermediate rail retreats (at the same speed) with the drawer side rail. Therefore, in such a case, the impact at the time of starting the retraction of the intermediate rail can be reduced as compared with the case where the intermediate rail is stopped and retreats immediately at the same speed together with the drawer side rail.
[0024]
Even if the intermediate rail is retracted by the friction when the drawer is stored, the recess 14H of the drawer-side rail causes the engaging protrusion of the connecting tool to interfere with the bulging portion 30T of the connecting tool and the front edge 10F of the housing-side rail. The retraction of the intermediate rail is restricted to the position facing 30K, and when it is in the facing state, the engaging protrusion enters the concave portion, the intermediate rail moves backward together with the drawer side rail, and the drawer storage is completed. The connecting mechanism may be any mechanism other than the mechanism having the connecting tool 30 and the concave portion 14H, and is optional.
[0025]
FIG. 7 is a schematic diagram of a multiple guide rail mechanism in which a ball as a rolling element is interposed between the housing-side rail 10 and the intermediate rail 12 and between the intermediate rail and the drawer-side rail 14, respectively. Unlike the first embodiment, a hole for the interlocking roller 20 is provided on the rail surface of the intermediate rail, a pivot 22 'parallel to the rail surface is provided, and the interlocking roller 20 is provided so as to be rotatable therearound. It rolls when it reaches a position sandwiched between the housing protrusion 10T and the drawer protrusion 14T of the body-side rail. Others are the same as the first embodiment.
[0026]
【The invention's effect】
As is clear from the above description, according to the present invention, it is possible to provide a double guide rail mechanism that operates smoothly and quietly.
[Brief description of the drawings]
FIG. 1 is a side view of a multiple guide rail mechanism according to the present invention.
FIG. 2 is an enlarged view of a main part of FIG. 1;
FIG. 3 is an enlarged cross-sectional view taken along line CC of FIG. 2;
FIG. 4 is a side view in the middle of being pulled out from the state of FIG. 2;
FIG. 5 is a side view of a state where a predetermined amount is further drawn from the state of FIG. 4;
FIG. 6 is an enlarged cross-sectional view taken along line FF of FIG. 4;
FIG. 7 is an explanatory view of a guide rail mechanism of another embodiment according to the present invention, and corresponds to FIG. 6;
[Explanation of symbols]
10 Chassis side rail (body side rail)
10T Case convex part (main part convex part)
12 Intermediate rail 14 Drawer side rail (Drawer side rail)
14T Drawer protrusion (drawer protrusion)
20 Interlocking roller 30 Connecting tool

Claims (5)

A rolling element is interposed between the main body side rail (10) provided on the main body side and provided between the main body and a drawer body housed in the main body, for smoothly pulling out the drawer body. Guide having a drawer-side rail (14) provided on the drawer side that is relatively movable with another rolling element interposed between the intermediate rail (12) and the drawer side. A rail mechanism,
A main body convex portion (10T) provided at a front portion of the main body side rail,
In a state in which the intermediate rail has been pulled out from the main body side rail, the interlocking roller (20) is moved from the rear end position (P1 ′) of the main body protrusion to a position (P2 ′) of the intermediate rail corresponding to the front position by a predetermined amount (δ). It is rotatably mounted,
In the state where the drawer body side rail has completed the retreat with respect to the intermediate rail, the drawer body protrusion (14T) extends from the position (P1) of the drawer body side rail corresponding to the position of the interlocking roller to the rear predetermined range (δ). Has been established,
In the process of pulling out the drawer from the state where storage is completed and the interlocking roller reaching the main body convex part, and in the process of storing the drawer, the interlocking roller is separated from the main body convex part and the storage is completed. In the process, a connecting mechanism (30, 14H) is provided in which the intermediate rail and the drawer side rail move together, and the other parts are separated.
When the interlocking roller provided on the intermediate rail is pulled out from the state where the drawer is completely stored and reaches the main body convex portion, the interlocking roller contacts the main body convex portion and the drawer body convex portion. Double guide rail mechanism. 2. The multiple guide rail mechanism according to claim 1, wherein a peripheral portion of the interlocking roller that comes into contact with each convex portion is formed of a soft elastic material. The double guide rail mechanism according to claim 1, wherein the interlocking roller has a gap between the interlocking roller and a pivot provided on the intermediate rail, the gap being movable in a radial direction of the pivot. The double guide rail mechanism according to any one of claims 1 to 3, wherein the predetermined amount defining the position of the interlocking roller and the predetermined range of the protrusion of the drawer body are short. The connecting mechanism has an arm-shaped connecting tool rotatably attached to the intermediate rail around a connecting tool pivot, and the connecting tool has an engaging projection on a side facing the drawer body side rail. The engaging projection can enter a recess provided at a predetermined position on the drawer-side rail when the drawer-side rail is completely retracted with respect to the intermediate rail, and the side of the connecting tool facing the main body-side rail. Is provided with a bulging portion, and the bulging amount of the bulging portion is such that the engaging bulge enters the concave portion and the bulging portion faces the main body side rail. When the drawer is pulled out and the interlocking roller reaches the main body convex portion, the connecting member pivot is attached to a position where the bulging portion is released from the restraint of the main body side rail. The double guide rail mechanism according to claim 1.

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