JP2011038620A - Motion guide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motion guide device preventing sudden collision of a movement block and a stopper member when a drawer is drawn out from a frame body and improving feeling of using when the drawer is opened and closed in usage as a motion guide member of, for example a drawer of furniture and the like. <P>SOLUTION: This device includes rolling elements, a fixing side member having a rolling groove of the rolling elements formed along a longitudinal direction, a moving side member attached on the fixing side member through the rolling elements, and a terminal regulating means regulating movement of the moving side member at an end part of the fixing side member. The terminal regulating means includes a first member fixed on one of the fixed side member and the moving side member, and second member fixed on another of the fixed member and the moving side member. The first member is an elastic sheet having even thickness along a movement direction of the movement side member and an inclination action surface which gradually rides on the first member, accompanying movement of the moving side member with respect to the fixed side member is formed on the second member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a motion guide device including a moving side member that is movable along a longitudinal direction of a fixed side member.

  This type of motion guide device includes a plurality of balls, a fixed side member in which a ball rolling groove is formed along the longitudinal direction, and a moving side member assembled to the fixed side member via the ball. It is configured.

  The motion guide device is conventionally used as a motion guide member for a work table of a machine tool or various transport devices, and also as a motion guide member for drawers of furniture or a system kitchen. When the motion guide device is used as a guide member such as a drawer, a stopper member that blocks the movement of the moving side member on the fixed side member in order to prevent the moving side member from falling off from the end of the fixed side member Is required.

  As a motion guide device provided with such a stopper member, one disclosed in Japanese Patent Laid-Open No. 2003-329036 is known. The motion guide device includes a track rail having a pair of side wall portions and having a substantially U-shaped cross section, and a slider that is assembled to the track rail via a rolling element and is slidable between the side wall portions; And a stopper member which is detachably provided at the end of the track rail and abuts against the slider.

  According to this configuration, when the slider reaches the end of the track rail, since the stopper member protrudes from the track rail, the moving block is locked to the track rail by the stopper member. It is like that.

JP2003-329036

  However, even if the motion guide device disclosed in Japanese Patent Application Laid-Open No. 2003-329036 is used as a guide member for a drawer or the like, if the rigidity of the drawer itself to which the moving block is fixed is low, the force to pull out the drawer from the frame body Therefore, the drawer itself may be deformed. If it becomes so, in a pair of movement guide device located between a drawer and a frame, there is an inconvenience that relative displacement of a movement block to a track rail will arise.

  When a relative displacement of the moving block occurs, in one motion guide device, the moving block is locked to the track rail by the stopper member, whereas the moving block of the other motion guide device is the track rail. Will not reach the end of the track and is not locked to the track rail. If the drawer is further pulled out from the frame in such a state, the moving block of the other motion guide device abruptly hits the stopper member, so that the drawer cannot be opened and closed smoothly. There was a problem that the feeling of use would be poor.

  The present invention has been made in view of such problems, and the object of the present invention is, for example, when the drawer is pulled out from the frame when used as a motion guide member such as a drawer of furniture or a system kitchen. It is an object of the present invention to provide a motion guide device capable of preventing a sudden collision between a moving block and a stopper member, and thus improving the feeling of use when opening and closing the drawer.

  In order to achieve the above object, a motion guide apparatus according to the present invention includes a rolling element, a fixed side member in which a rolling groove of the rolling element is formed along a longitudinal direction, and the rolling element on the fixed side member. And a terminal regulating means for restricting the movement of the moving member at the end of the fixed member.

  And the said termination | terminus control means is provided with the 1st member fixed to either one of the said fixed side member or the movement side member, and the 2nd member fixed to either the said movement side member or the fixed side member. The first member is an elastic sheet having a uniform thickness along the moving direction of the moving side member, and the second member is moved along with the movement of the moving side member with respect to the fixed side member. An inclined action surface that gradually climbs over the first member is formed.

  According to the present invention as described above, for example, when used as a motion guide member such as a drawer of furniture or a system kitchen, it is possible to prevent a sudden collision between the moving block and the stopper member when the drawer is pulled out from the frame. Thus, it is possible to provide an exercise guide device that can improve the feeling of use when opening and closing the drawer.

It is a perspective view which shows the drawer | drawing-out unit which used the exercise | movement guide apparatus which concerns on embodiment of this invention as a guide member. It is a perspective view showing a first embodiment of a motion guide device of the present invention. It is a front view showing a first embodiment of a motion guide device of the present invention. It is the IV-IV sectional view taken on the line of FIG. It is a side view showing a first embodiment of a motion guide device of the present invention. It is a side view which shows 2nd embodiment of the movement guide apparatus of this invention. It is a perspective view which shows 3rd embodiment of the movement guide apparatus of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a motion guide device to which the present invention is applied will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a drawer unit using a motion guide device according to an embodiment of the present invention as a guide member. The drawer unit includes a drawer 101 and a frame body 102 in which the drawer is stored. The motion guide device is provided between the drawer 101 and the frame 102.

  2 and 3 show the motion guide device 1 of the first embodiment. FIG. 2 is a perspective view of the motion guide device 1, and FIG. 3 is a front view. The motion guide device 1 includes a track rail 2 having a substantially rectangular cross section, and a moving block 3 which is assembled to the track rail 2 via a ball 4 and has a substantially channel cross section. . In the drawer unit shown in FIG. 1, the track rail 2 is fixed to the drawer 101, and the moving block 3 is fixed to the frame body 102.

  The track rail 2 is formed with a rolling groove 21 of the ball 4 along the longitudinal direction, and a plurality of mounting holes 22 are formed on the upper surface at a predetermined pitch. Stopper members 5 are attached to both ends of the track rail 2.

  The moving block 3 has a guide groove that accommodates a part of the track rail 2 and is arranged so as to straddle the track rail 2. The moving block 3 has a horizontal portion 31a on which a mounting surface 31 for a conveyance object is formed and a pair of skirt portions 31b orthogonal to the horizontal portion 31a, and is formed in a substantially channel shape in cross section. The horizontal portion 31a is formed with a tap hole 32 into which the mounting surface 31 and a fixing bolt of the conveyance object are screwed.

  4 is a cross-sectional view taken along line IV-IV in FIG. Load rolling grooves 33 for the balls 4 are formed inside the skirt portions 31b of the moving block 3, respectively. The ball rolling groove 21 of the track rail 2 and the load rolling groove 33 of the moving block 3 face each other, and a load path through which the ball 4 rolls while applying a load between the moving block 3 and the track rail 2. 34 is configured. The moving block 3 is provided with an infinite circulation path through which the balls 4 circulate. The infinite circulation path is composed of the load path 34, a return path 35 of the ball 4 perforated in the skirt portion 31b corresponding to the load path 34, and a direction change path 36. The ball 4 that has finished rolling in the load passage 34 enters the direction changing path 36, and the rolling direction in the direction changing path 36 is reversed. After that, the return passage 35 rolls in the opposite direction to the load passage 34.

  The moving block 2 includes a block body 3 a having the load passage 34 and a return passage 35, and a direction changing member 3 b having the direction changing path 36. When the direction changing member 3b is attached to the block body 3a, the endless circulation path is completed.

  In the motion guide apparatus 1 according to the present invention, a terminal regulating means 6 for restricting the movement of the moving block 3 is provided at the end of the track rail 2. FIG. 5 is a side view showing a first embodiment of the termination regulating means 6. The terminal regulating means 6 is composed of a first member 6a fixed to the track rail 2 by a stopper member 5 and a second member 6b fixed to the end surface of the moving block 3 by a fixing bolt or the like. .

  The first member 6a is composed of a rubber sheet formed in a ring shape. The first member 6 a is bonded to the track rail 2 via an adhesive or the like, and is fixed to the end of the track rail 2 by pressing the stopper member 5.

  The second member 6b is composed of a pair of arms protruding in the moving direction of the second member. A bolt hole into which a fixing bolt is fitted is formed between these arms (not shown), and the second member 6b is fixed to the moving block 3 by the fixing bolt. In addition, for example, an inclined action surface 6c that is inclined at a constant rate is formed on the lower surface of each arm.

  The height position of the second member 6b is adjusted such that the inclined action surface 6c of the second member 6b interferes with the first member 6a.

  In the motion guide apparatus 1 having this configuration, first, when the moving block 3 reaches the end of the track rail 2, the first member 6a in which the inclined action surface 6c formed on the second member 6b is fixed to the track rail 2. I hit it.

  Thereafter, as the moving block 3 is moved toward the end of the track rail 2, the inclined working surface 6c is configured with a constant gradient, so that the second member 6b is gradually moved to the first member 6a. You will get on. The first member 6a is gradually elastically deformed in the longitudinal direction of the track rail 2 as the inclined working surface 6c rides up.

  The amount of deformation of the first member 6a increases as the range on which the inclined working surface 6c rides on the first member 6a increases. Thereby, the movement resistance with respect to the said movement block 3 increases gradually within the presence range L of the 1st member 6a.

  That is, in the motion guide device 1, due to an increase in the movement resistance with respect to the moving block 3, the moving block does not abut against the stopper member and is not locked as in the conventional motion guide device, but the presence of the first member 6a. Within the range L, the movement of the moving block 3 gradually becomes heavier, and finally the moving block 3 is locked to the track rail 2.

  In FIG. 5, only one end side of the track rail 2 provided with the end regulation means 6 is shown. However, depending on the application, it is arbitrarily selected whether the end regulation means 6 is fixed to one end or both ends of the track rail 2. can do.

  In addition, as shown in FIG. 1, when a plurality of moving blocks 3 are assembled to a single track rail 2, the termination regulating means with respect to the end surface of the moving block 3 corresponding to the termination of the track rail 2. 6 is installed.

  Furthermore, in the present embodiment, the first member 6a is formed in a ring shape. However, as long as the existence range L of the first member 6a is maintained, the first member 6a may be formed in a square shape or the like.

  Further, when it is desired to increase the rate of increase of the movement resistance with respect to the moving block 3, by arbitrarily changing the thickness of the first member 6a, the gradient of the inclined working surface 6c of the second member 6b, etc. The increase rate of the movement resistance with respect to the movement block 3 can be increased.

  FIG. 6 is a side view showing the termination regulating means 60 of the second embodiment. In the terminal regulating means 60, an inclined action surface 60c is formed on the upper surface of the first member 60a fixed to the track rail 2, while an elastic sheet 60d is formed on the lower surface of the second member 60b fixed to the moving block 3. Is provided. The termination regulating means 60 has the same effect as the termination regulating means 6 according to the first embodiment, and the termination regulating means of the present invention includes any aspect.

  When the motion guide device of the present embodiment configured as described above was used as a motion guide member such as a drawer, a relative displacement of the moving block occurred between the pair of motion guide devices due to deformation of the drawer shape. However, it is possible to improve the feeling of use when opening and closing the drawer. That is, when the relative displacement of the moving block occurs between the pair of motion guide devices, even if the second member starts to ride on the first member in one motion guide device, the other motion guide device Then, the inclined action surface of the second member does not reach the end of the first member, and the second member is not on the first member.

  If the drawer is continuously pulled out from the frame body from this state, the movement of the moving block relative to the track rail becomes heavy due to the second member riding on the first member in the former motion guide device. During this time, the second member starts to ride on the first member even in the latter motion guide device.

  In this way, when the drawer is pulled out from the frame, the movement speed of each moving block is gradually attenuated by the terminal regulating means in both motion guide devices, and finally the moving block becomes the track rail. It is locked against.

  That is, when the motion guide device of this embodiment is applied as a guide member such as a drawer, when the moving block reaches the end of the track rail, both the motion guide devices have a sudden movement between the moving block and the stopper member. A collision can be prevented. As a result, even when trying to pull out the drawer from the frame while the relative displacement of the moving block is occurring, only the moving block of either the left or right motion guide device does not hit the stopper member suddenly. Thus, it is possible to improve the feeling of use when the drawer is pulled out from the frame.

  In the motion guide device according to the present embodiment, the first member fixed to the track rail is made of a rubber sheet. However, as long as the member is elastically deformed by being pressed by the second member fixed to the moving block. For example, it may be made of a resin sheet.

  Further, if the first member can be firmly fixed to the track rail, it is not necessary to press the first member against the track rail using the stopper member.

  Furthermore, in said 1st and 2nd embodiment, although the said 2nd member is being fixed in the state protruded from the end surface of a movement block, if it is a position corresponding to the 1st member fixed to the said track rail, The second member may be provided inside the moving block in the axial direction.

  FIG. 7 shows a third embodiment of the motion guide device of the present invention. In the first and second embodiments described above, the present invention is applied to a linear guide device having an infinite circulation path for balls. In this embodiment, the present invention is applied to a finite slide rail unit. The slide rail unit 70 includes an outer rail 71 formed in a channel shape by bending a pair of ball rolling portions along the longitudinal direction, and an inner rail formed in a channel shape by bending the pair of ball rolling portions. 72, a number of balls 73 rolling inside the ball rolling part of the outer rail 71 and the outside of the ball rolling part of the inner rail 72, and a ball 73 between the outer rail 71 and the inner rail 72. The retainer 74 is arranged at intervals.

  In this embodiment, a first member 75 as an elastic sheet is fixed to the end portion of the inner rail 72, while a second member 76 having an inclined action surface is fixed to the end portion of the outer rail 71.

  Also with this configuration, the same effects as the first embodiment and the second embodiment described above can be obtained, and the usability can be improved when used as a guide member for the drawer.

  However, in the third embodiment, when the inner rail 72 is completely stored in the outer rail 71, the retainer 74 for arranging the balls 73 is located at the center in the longitudinal direction of the outer rail 71. The distance between the end restricting means disposed at the end portions of 71 and the inner rail 72 and the ball 73 is increased. In such a case, if the inner rail 72 is inclined with respect to the outer rail 73, sufficient pressure cannot be obtained between the first member 75 and the second member 76, and the movement of the inner rail 72 is sufficiently attenuated. It may not be possible. On the other hand, in the linear guide device in which the moving block is assembled to the track rail through the infinite circulation path as in the first and second embodiments, the first member or the second member fixed to the moving block is always a ball train. Therefore, the effect of the terminal regulating means can be obtained more reliably.

DESCRIPTION OF SYMBOLS 1 ... Motion guide apparatus, 2 ... Track rail, 3 ... Moving block, 4 ... Ball (rolling body), 6 ... Termination restricting means, 6a ... 1st member, 6b ... 2nd member, 6c ... Inclination acting surface

Claims (4)

A rolling element, a fixed member in which a rolling groove of the rolling element is formed along the longitudinal direction, a moving member assembled to the fixed member via the rolling element, and the fixed member End restriction means for restricting movement of the moving side member at the end, and
The termination regulating means includes a first member fixed to either the fixed side member or the moving side member, and a second member fixed to either the moving side member or the fixed side member,
The first member is an elastic sheet having a uniform thickness along the moving direction of the moving side member,
The motion guide device according to claim 1, wherein an inclined action surface is formed on the second member so as to gradually climb onto the first member as the movable member moves relative to the fixed member. The fixed side member is a track rail in which rolling grooves of rolling elements are formed along the longitudinal direction,
The motion guide device according to claim 1, wherein the moving side member is a moving block that has an infinite circulation path of the rolling elements and is assembled to a track rail via the rolling elements.   The motion guide apparatus according to claim 2, wherein the first member is fixed to the track rail. In a drawer unit composed of a drawer and a frame in which the drawer is stored,
A drawer unit characterized in that a plurality of the motion guide devices according to claim 1 are used to guide the drawer with respect to the frame.

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