JP5646519B2 - Exercise guidance device - Google Patents

Description

  The present invention relates to a motion guide device, and more particularly to a motion guide device in which guide accuracy is improved by improving the accuracy of an infinite circulation path through which a plurality of rolling elements circulate.

  2. Description of the Related Art Conventionally, motion guide devices such as shown in FIGS. 10 and 11 are known as machine element parts that move a linear motion portion of a machine lightly and accurately. The configuration of this type of motion guide device will be described with reference to FIGS. 10 and 11. A motion guide device 40 according to the prior art includes a track rail 41 and balls 42 installed as a number of rolling elements on the track rail 41. And a moving block 43 that is reciprocally mounted via the... The track rail 41 is a long member whose cross section perpendicular to the longitudinal direction is formed in a substantially rectangular shape, and the rolling element rolling groove that becomes the track when the ball 42 rolls on its surface (upper surface and both side surfaces). 41 a... Are formed over the entire length of the track rail 41. The track rail 41 may be formed to extend linearly or may be formed to extend in a curved manner.

  On the other hand, the moving block 43 includes a moving block main body 43a made of a metal material, and a pair of end plates 43b and 43b made of a resin material installed on both end surfaces in the moving direction of the moving block main body 43a. ing. The moving block main body 43a is provided with load rolling element rolling grooves 43a at positions corresponding to the rolling element rolling grooves 41a. The rolling element rolling grooves 41a of the track rail 41 and the loaded rolling element rolling grooves 43a formed in the moving block main body 43a form a loaded rolling element rolling path 52, and a plurality of the introduced rolling element rolling paths 52 are introduced into the passage. The balls 42 roll while receiving a load. Further, the moving block main body 43a includes unloaded rolling element rolling paths 53 extending in parallel with the loaded rolling element rolling grooves 43a. Further, each of the pair of end plates 43b, 43b is provided with a direction changing path 55 that connects the unloaded rolling element rolling paths 53 to the loaded rolling element rolling paths 52. A combination of one loaded rolling element rolling path 52 and unloaded rolling element rolling path 53 and a pair of direction changing paths 55, 55 connecting them constitutes one infinite circulation path (see FIG. 11). ).

  A plurality of balls 42 are installed in an infinite circulation path composed of a loaded rolling element rolling path 52, an unloaded rolling element rolling path 53, and a pair of direction changing paths 55, 55 so that infinite circulation is possible. A reciprocating motion of the moving block 43 relative to the track rail 41 is possible.

  By the way, in the recent industry, there is a request to expand the application range of the above-described motion guide device, and for device manufacturers, there is a market for motion guide devices with further improved guidance accuracy. Has been requested to provide. As an example of such a request, there is a case where minimization is required for a posture change or vibration (pulsation) of a moving block called a waving phenomenon, which has not been a problem in general applications so far. As a conventional measure for improving this kind of guidance accuracy, for example, in order to move the ball 42 smoothly from the loaded rolling element rolling path 52 which is the load area of the ball in the direction change path 55 which is the no-load area. In addition, efforts have been made to improve the dimensional accuracy of device parts by improving the processing technology, or to provide a crowning shape at the entrance of the direction change path 55, and to optimize the crowning shape. .

  However, there is a limit to the improvement from the viewpoint of a slight design change of the existing shape as described above and the optimization of the processing technique, and the creation of a new improvement technique for improving the accuracy of the conventional motion guide device has occurred. It was sought after.

  The present invention has been made in view of the above-described problems, and the object thereof is to provide a new and improved technique capable of improving the accuracy of the motion guide device, and thus compared with the conventional technique. Another object of the present invention is to provide a motion guide device that achieves higher accuracy.

The motion guide device according to the present invention has a cross section perpendicular to the longitudinal direction formed in a substantially rectangular shape, and has four rolling elements on the upper surface and two on each side along the longitudinal direction. In the motion guide apparatus comprising a track rail in which a groove is formed and a moving block that is assembled to the track rail through a plurality of rolling elements so as to be relatively movable, each of the rolling element rolling grooves has two strips. The four rolling element rolling grooves formed on the upper surface of the track rail are composed of two adjacent unit units that are close and parallel to form one group, and each group is on both outer sides of the upper surface. disposed asked position Rutotomoni, respectively formed on the inclined surface inclined downward from the horizontal direction, a pair of rolling member rolling groove of the two rows that were received on both outer sides of the upper surface, in such genetically Two rolling element rolling grooves formed on the adjacent side surfaces Ranaru and each set is arranged at a position where the corresponding sides of the corner portion of the upper of said track rail Rutotomoni, rolling element rolling grooves of the two rows formed in the side surface, and the inclined surface Each of the rolling element rolling grooves and the rolling elements that are formed on substantially orthogonal slopes and constitute each set are configured to load a load in the same direction, and the moving block is configured to roll the rolling element. A moving block main body having a loaded rolling element rolling groove that forms a loaded rolling element rolling path in cooperation with the groove and having an unloaded rolling element rolling path arranged in parallel to the loaded rolling element rolling groove And an inner peripheral side direction change groove that connects a part of the loaded rolling element rolling path and a part of the no-load rolling element rolling path is attached to both end surfaces of the moving block main body in the relative movement direction. The return member and the front A pair of end plates that are attached so as to cover the return member to both end surfaces in the relative movement direction in the moving block main body, and in which an outer peripheral direction change groove is formed on the mounting surface side with the moving block main body, The end plate is attached to the moving block main body after the return member is attached with respect to the moving block main body, and the inner circumferential direction changing groove and the outer peripheral direction changing groove are Form a direction change path connecting the loaded rolling element rolling path and the unloaded rolling element rolling path in cooperation with each other, and the unloaded rolling element rolling path included in the moving block main body section is configured by the moving block main body section. Resin section formed in parallel with two through-holes so that the unloaded rolling element rolling path corresponds to the rolling element rolling groove of the two sets of units It is constructed by introducing and installing materials.

  In the motion guide apparatus according to the present invention, the return member may be formed with two inner circumferential direction change grooves formed in parallel.

  In the motion guide device according to the present invention, the moving block body and the return member may be attached by fitting a convex portion formed on one side and a concave portion formed on either side. It is suitable to be made.

  Furthermore, in the motion guide device according to the present invention, the return member has at least one convex portion on an attachment surface with the movable block main body, and the convex portion is arranged in two grooves in parallel with the return member. The inner circumferential direction change groove formed at the intermediate portion may be formed at a position corresponding to the intermediate portion.

  Furthermore, in the motion guide device according to the present invention, the resin member has a semi-cylindrical locking groove, and the return member has a locking protrusion corresponding to the groove shape of the locking groove, The attachment position of the resin member and the return member with respect to the moving block main body can be determined by fitting the engagement protrusion into the engagement groove.

  According to the present invention, since it is possible to further improve the accuracy of the infinite circulation path through which a plurality of rolling elements circulate, it is possible to provide a motion guide device with improved guidance accuracy compared to the prior art.

It is a partially broken perspective view for demonstrating the exercise | movement guide apparatus which concerns on this embodiment. It is a partial longitudinal cross-section front view of the exercise | movement guide apparatus which concerns on this embodiment, the paper surface right side shows an external appearance, and the paper surface left side has shown the cross section orthogonal to a longitudinal direction. It is a partially broken side view of the motion guide device according to the present embodiment. It is an external appearance front view for demonstrating the structure of the movement block main-body part which concerns on this embodiment. It is a figure for demonstrating the 1st division body which concerns on this embodiment, (a) has shown the side surface in the figure, (b) is A arrow view shown by (a) in the figure. . It is a figure for demonstrating the 2nd division body which concerns on this embodiment, (a) has shown the side surface in the figure, (b) is B arrow view shown by (a) in the figure. . It is a figure for demonstrating the return member which concerns on this embodiment, (a) shows a contact surface with a movement block main-body part, and (b) is perpendicular | vertical with respect to the attachment surface of a movement block main-body part in the figure. (C) shows a surface adjacent to the surface (b). It is a figure for demonstrating the structure of the end plate which concerns on this embodiment. It is a figure which shows the various modifications of the resin member which concerns on this embodiment. It is an external appearance perspective view which illustrates one form of the motion guidance apparatus which concerns on a prior art. It is sectional drawing for demonstrating the infinite circuit provided with the exercise | movement guide apparatus which concerns on the prior art shown in FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all the combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  FIG. 1 is a partially broken perspective view for explaining a motion guide apparatus according to the present embodiment. FIG. 2 is a partial longitudinal cross-sectional front view of the motion guide device according to the present embodiment, in which the right side of the drawing shows the appearance and the left side of the drawing shows a cross section perpendicular to the longitudinal direction. Furthermore, FIG. 3 is a partially broken side view of the motion guide apparatus according to the present embodiment. The motion guide device 10 according to this embodiment includes a track rail 11 formed to extend in the longitudinal direction, and a moving block 21 that is assembled to the track rail 11 via a plurality of balls 12 so as to be relatively movable. ing.

  The outline of the members constituting the motion guide device 10 will be described. The track rail 11 is a long member whose cross section perpendicular to the longitudinal direction is formed in a substantially horizontally long rectangle, and its surface (upper surface and both side surfaces). Are formed with a rolling element rolling groove 11a, which becomes a track when the ball 12 rolls, over the entire length of the track rail 11.

  Moreover, about the track rail 11 which concerns on this embodiment, the rolling element rolling groove | channel 11a ... of a total of 8 articles | rows is formed, 4 articles | rows on an upper surface, and 2 articles | strands on both sides. The eight rolling element rolling grooves 11a ... are formed so that the two rolling element rolling grooves 11a, 11a are close to each other and are arranged in parallel so that each two pieces form one set. In particular, for the four rolling element rolling grooves 11a ... formed on the upper surface of the track rail 11, each set is arranged at a position close to both outer sides of the upper surface. A set of two rolling element rolling grooves 11a, 11a brought close to both outer sides of the upper surface, and a set of two rolling element rolling grooves 11a, 11a formed on the side surface close to these sets; Are arranged at corresponding positions across the upper corner of the track rail 11. In the case of the track rail 11 according to the present embodiment, it may be formed in a linear shape as shown in FIG. 1 as in the case of the prior art, or may be curved with a certain curvature. May be formed.

  On the other hand, a total of eight moving blocks 21 (only two are visible in FIG. 1) are installed on the moving block main body 22 made of a metal material and both end surfaces of the moving block main body 22 in the moving direction. The return member 23 includes a pair of end plates 24 and 24 that are attached to both end surfaces of the moving block body 22 in the relative movement direction so as to cover the return member 23.

  Incidentally, the rolling element rolling grooves 11a, 11a of the motion guide device 10 according to the present embodiment are configured as a unit of two rolling grooves that are close and parallel as described above. This is because the purpose is to improve the accuracy of the motion guide device 10 such as minimization. Further, the ball 12 employed in the present embodiment has a smaller diameter than a general motion guide device, and the length of the moving block 21 in the longitudinal direction is increased to increase the length of the ball 12. The number of installations is increased. Such “reducing the diameter of the ball 12” and “elongating the moving block 21” both lead to an increase in the number of balls 12 installed in the motion guide device 10. Or it shows that a significant configuration such as lowering the surface pressure can be taken, and the effect of this configuration improves the motion accuracy in the motion guide device 10 (for example, minimizes the posture fluctuation and vibration (pulsation) of the moving block 21). ) Is realized. Further, “reducing the diameter of the ball 12” contributes to an increase in the volume of the moving block 21, so that the rigidity of the moving block 21 is improved, and the accuracy of the motion guide device 10 is improved from this point. .

  Now, in the motion guide apparatus 10 according to the present embodiment, each member of the moving block main body portion 22, the return member 23, and the end plate 24 constituting the moving block 21 has advantageous characteristics. Each member will be described in detail with reference to the drawings.

  First, FIG. 4 is an external front view for explaining the configuration of the moving block main body 22 according to the present embodiment. The movable block main body 22 according to the present embodiment cooperates with the rolling element rolling groove 11a formed on the track rail 11 to form the load rolling element rolling groove 25 that forms the loaded rolling element rolling path 32 when assembled. In the surface facing the track rail 11. Further, a through-hole 26 penetrating in parallel with the load rolling element rolling groove 25 is provided at a position spaced apart from the rolling element rolling groove 25 by a predetermined distance.

  The through-hole 26 formed through the movable block main body 22 introduces and installs the resin member 27 formed by combining the divided bodies 27a and 27b made of the two resin materials shown in FIGS. (See also FIG. 2). The first divided body 27a shown in FIG. 5 is formed with two grooves 33a and 33a that constitute a part of the no-load rolling element rolling path 33, while the second divided body shown in FIG. The body 27b is formed with two grooves 33b and 33b constituting the remaining portion of the no-load rolling element rolling path 33. Then, by forming the resin member 27 by combining the first divided body 27a and the second divided body 27b, the grooves 33a and 33b described above are combined in the central portion of the resin member 27 so that there are no two rows. Load rolling element rolling paths 33, 33 are completed.

  Further, as shown in FIG. 2, by introducing and installing the resin member 27 to the through hole 26, it is parallel to the load rolling element rolling path 32 formed by the rolling element rolling groove 11 a and the load rolling element rolling groove 25. The arranged no-load rolling element rolling path 33 will be formed.

  In addition, the no-load rolling element rolling path 33 according to the present embodiment is composed of a set of two rolling paths arranged in close proximity and in parallel in consideration of minimization of the waving phenomenon. The configuration in which two unloaded rolling element rolling paths 33 are formed and introduced into the resin member 27 made of a resin material using the through holes 26 formed through the block main body portion 22 is easy to process and inexpensive. It is also a very suitable configuration.

  For example, it is very difficult to form two unloaded rolling element rolling paths 33 that are arranged close to and parallel to the moving block main body 22 made of a metal material, as in the conventional technique. It is. If the unloaded rolling element rolling path 33 according to the present embodiment is formed by applying the technique used in the prior art as it is, electric discharge machining or wire is applied to the moving block main body 43a made of a metal material. Since it is necessary to use a processing means that requires time and cost such as processing, it is not preferable. Furthermore, the disadvantage of the prior art is that the moving block 21 according to the present embodiment may be elongated for high accuracy, and the moving block main body 22 which is a long metal material. However, it is not preferable to form two unloaded rolling element rolling paths 33 that are close to each other and arranged in parallel in terms of processing technology restrictions and required dimensional accuracy. The present invention was newly created by the inventors in order to solve the above-described problems. By adopting the configuration of the present embodiment described above, processing is easy and inexpensive, and For the first time, it is possible to form the moving block main body 22 having high dimensional accuracy.

Further, the first divided body 27a shown in FIG. 5 and the second divided body 27b shown in FIG. 6 have different shapes. Depending on the shape of the no-load rolling element rolling path 33 through which the ball 12 passes and the division position of the resin member 27, thin parts may be generated in the divided bodies 27a and 27b. It is considered that when both the bodies 27a and 27b have this thin portion, distortion is likely to occur when they are combined or introduced into the through hole 26. Therefore, in this embodiment, the first divided body 27a shown in FIG. 5 is formed so as not to have a thin portion, and only the second divided body 27b shown in FIG. 6 has the thin portion 27b ₁ . It was decided. By adopting such a configuration, the resin member 27 according to the present embodiment can maintain a stable shape in any state, and as a result, a highly accurate motion guide device 10 can be realized. Yes.

  Furthermore, a round recess 28 is formed in the moving block body 22 between the load rolling element rolling groove 25 and the resin member 27 installation position. Further, the resin member 27 corresponding to the recess 28 includes A locking groove 29 having a semi-cylindrical shape is formed. The recess 28 and the locking groove 29 have a shape provided for installing a return member 23 described later, and are useful for positioning the mounting positions of the resin member 27 and the return member 23 with respect to the moving block main body 22. .

  Next, the configuration of the return member 23 will be described with reference to FIG. FIG. 7 is a view for explaining the return member 23 according to the present embodiment, in which (a) shows the contact surface with the moving block main body 22 and (b) in the figure shows the moving block main body. The surface standing upright with respect to the attachment surface of the part 22 is shown, (c) has shown the surface adjacent to the surface of (b) in the figure.

  The return member 23 according to the present embodiment is a member that is attached to both end surfaces of the moving block main body 22 in the relative movement direction, and two protrusions are formed on the contact surface of the return member 23 with the moving block main body 22. Is formed. One projection formed on the return member 23 is a convex portion 23 a that fits into the concave portion 28 formed on the moving block main body 22, and the other projection formed on the return member 23 is formed on the resin member 27. It is the latching convex part 23b which fits in the latching groove | channel 29 made into the semicircular column shape made. In particular, the positions where the recesses 28 and the projections 23a, the locking grooves 29 and the locking projections 23b are formed are strictly defined, and the installation position of the return member 23 with respect to the movable block main body 22 is extremely high. It is highly accurate. In addition, since the locking groove 29 and the locking projection 23b have a fitting structure using a semi-cylindrical shape, as a detent or positioning of the return member 23 and the resin member 27 with respect to the moving block main body 22 It is possible to exhibit a suitable action.

  Furthermore, the return member 23 according to the present embodiment has an inner peripheral side that connects a part of the loaded rolling element rolling path 32 and a part of the unloaded rolling element rolling path 33 when installed on the moving block main body 22. A direction changing groove 35a is formed. About this inner peripheral side direction change groove | channel 35a, by the effect | action of the recessed part 28 and the convex part 23a, and the latching groove | channel 29 and the latching convex part 23b, a part of load rolling-element rolling path 32 and the unloaded rolling-element rolling path 33 are provided. Since it is possible to communicate with a part of the outer surface side direction change groove 35b formed on the end plate 24 side described later, the load is changed when the direction change path 35 is formed. The connection between the rolling element rolling path 32 and the no-load rolling element rolling path 33 can be realized without a step.

  Furthermore, in the present embodiment, after the return member 23 is first installed with the moving block main body 22 as a reference for attachment, an end plate 24 described later is installed on the moving block main body 22 so as to cover the return member 23. As a result, the moving block 21 is formed. By assembling the moving block main body 22 and the return member 23 with high accuracy first, a part of the loaded rolling element rolling path 32 and a part of the no-load rolling element rolling path 33 are accurately communicated by the inner circumferential direction changing groove 35a. As a result, the assembly accuracy of the infinite circuit is dramatically improved.

  The above-described configuration concept is completely different from the conventional technique in which the accuracy of the infinite circulation path is ensured by adjusting the installation position of the end plate 43b in which the plurality of direction change paths 55 are formed. By adopting such a return member 23, it is possible to perform accuracy determination based on the load rolling element rolling path 32, the no-load rolling element rolling path 33, and the direction changing path 35 for each individual infinite circulation path. The guidance accuracy of the device 10 can be greatly improved.

  In addition, the convex part 23a which the return member 23 which concerns on this embodiment has is formed in the position corresponding to the intermediate part of the inner peripheral side direction change groove 35a formed in parallel with 2 grooves with respect to the return member 23. . Since this position is located at a substantially middle point of the return member 23, the convex portion 23a formed at this position can maintain a stable fitting state. By forming the convex portion 23a at such a position, the stability of the return member 23 when the convex portion 23a and the concave portion 28 are fitted is increased, and the return member 23 is securely assembled to the movable block main body portion 22. Is realized.

  Further, the fixing of the return member 23 according to the present embodiment to the movable block main body portion 22 is achieved by using a fixing means such as a screw hole formed in the return member 23 to realize a stronger fixing state. Can do.

  Then, the structure of the end plate 24 which concerns on this embodiment is demonstrated using FIG. The end plate 24 according to the present embodiment is a member that covers and attaches the return member 23 to both end surfaces of the moving block main body 22 in the relative movement direction. The end plate 24 is formed with an outer peripheral side direction changing groove 35b on the mounting surface side with the moving block main body 22, and the outer peripheral side direction changing groove 35b and the inner peripheral side direction changing groove 35a of the return member 23 By cooperating with each other, it is possible to form a direction changing path 35 that connects the loaded rolling element rolling path 32 and the unloaded rolling element rolling path 33. The outer peripheral side direction changing groove 35b formed in the end plate 24 is not required to have the dimensional accuracy as the inner peripheral side direction changing groove 35a of the return member 23, and may be formed with a certain allowance. It is preferable from the viewpoint of facilitating the mounting. The dimensional accuracy of the infinite circulation path is not a problem because strict accuracy is obtained on the inner circumferential side direction changing groove 35a side of the return member 23.

  By assembling the members described above, a loaded rolling element rolling path 32, an unloaded rolling element rolling path 33, and a pair of direction changing paths 35, 35 are formed, and an infinite circulation path formed by these rolling paths is formed. The plurality of balls 12 arranged circulate in the infinite circulation path with the relative movement of the moving block 21 with respect to the track rail 11.

  In the motion guide device 10 according to the present embodiment, since the return member 23 is first installed on the moving block main body portion 22, the dimensional accuracy of the infinite circulation path can be improved, compared with the prior art. Thus, it is possible to realize the motion guidance device 10 with high guidance accuracy. Note that the motion guide device 10 according to the present embodiment employs a ball 12 having a smaller diameter than the general motion guide device or the length of the moving block 21 in the longitudinal direction, particularly for the purpose of minimizing the waving phenomenon. Is increased to increase the number of balls 12 installed, or a configuration in which two endless circulation paths are arranged in parallel is adopted. In such a configuration, if the dimensional accuracy of the infinite circuit is poor, the guidance accuracy is adversely affected. Therefore, the configuration of the motion guide device 10 illustrated in FIGS. 1 to 3 is realized for the first time by applying the present invention. It can be said that it is a form.

  Next, a method for assembling the moving block 21 having the most features in the present embodiment will be described. First, the return member 23 and the end plate 24 are fixed in this order only to one end face in the relative movement direction with respect to the moving block main body 22 formed by machining a metal material.

  Next, the resin member 27 formed by combining the first divided body 27 a and the second divided body 27 b is introduced and installed in the through hole 26 formed in the moving block main body 22. At this time, by installing the resin member 27 so that the locking groove 29 formed in the resin member 27 and the locking projection 23b of the return member 23 that has been installed fit securely, the resin member 27 Reliable positioning is performed, and the rotation of the resin member 27 is further prevented.

  After that, the return member 23 is securely installed on the other end surface in the relative movement direction of the moving block main body 22 (that is, the locking groove 29 and the locking projection 23b are fitted), and a plurality of balls After inserting 12, the end plate 24 is finally fixed, whereby the assembly of the moving block 21 is completed.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the embodiment. For example, the return member 23 according to the present embodiment has been described by exemplifying a case where the inner peripheral side direction changing groove 35a is formed in parallel with two grooves. However, the number of inner peripheral side direction changing grooves 35a formed in one return member 23 can be changed as appropriate, and may be one groove or a plurality of grooves of two or more.

  Further, regarding the concave portion 28 and the convex portion 23a formed on the moving block main body portion 22 and the return member 23, and the locking groove 29 and the locking convex portion 23b, respectively, the moving block main body portion 22 and the return member 23 Any combination can be selected, such as forming in the opposite configuration to the case of this embodiment described above. Moreover, about the fitting shape of the recessed part 28 and the convex part 23a shown in this embodiment, and the latching groove | channel 29 and the latching convex part 23b, it is possible to employ | adopt all shapes and is the same as this embodiment. Any shape may be used as long as the effect can be exhibited.

  Furthermore, about the shape of the 1st and 2nd division bodies 27a and 27b shown in FIG.5 and FIG.6, common parts can be achieved by making it a half shape as shown, for example in FIG. . If there is no problem such as distortion during installation in the through hole 26, the number of parts can be reduced by adopting the configuration shown in FIG. 9, and the manufacturing cost and the part cost can be reduced.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Motion guide apparatus, 11 Track rail, 11a Rolling body rolling groove, 12 Ball, 21 Moving block, 22 Moving block main-body part, 23 Return member, 23a Convex part, 23b Locking convex part, 24 End plate, 25 Load rolling Moving body rolling groove, 26 through-hole, 27 resin member, 27a, 27b divided body, 27b ₁ thin portion, 28 recess, 29 locking groove, 32 loaded rolling element rolling path, 33 unloaded rolling element rolling path, 33a groove, 35a Inner peripheral side direction changing groove, 35b Outer peripheral side direction changing groove, 40 Motion guide device according to prior art, 41 Track rail, 41a Rolling body rolling groove, 42 Ball, 43 Moving block, 43a Moving block main body, 43b End Plate, 52 loaded rolling element rolling path, 53 unloaded rolling element rolling path, 55 direction changing path.

Claims (5)

A track rail in which a cross section perpendicular to the longitudinal direction is formed in a substantially rectangular shape, and four rolling elements are formed on the upper surface along the longitudinal direction and two on each side surface, a total of eight rolling element rolling grooves are formed,
A moving block assembled to the track rail so as to be relatively movable via a plurality of rolling elements;
In an exercise guidance device comprising:
The rolling element rolling groove is composed of two sets of adjacent and parallel sets so that two sets each form one set.
Article 4 rolling member rolling groove of said formed on the upper surface of the track rail is disposed at a position each set were received on both outer sides of the upper surface Rutotomoni, the inclined surface inclined downward from the horizontal direction A set of two rolling element rolling grooves formed respectively on both sides of the upper surface, and a set of two rolling element rolling grooves formed on the side surface adjacent to these sets; It is arranged at a position where the corresponding sides of the corner portion of the upper of said track rail Rutotomoni, rolling element rolling grooves of the two rows formed in the side surface, the inclined surface and the inclined surface substantially perpendicular Each formed ,
The rolling element rolling grooves and the rolling elements constituting each set are configured to load a load in the same direction,
The moving block is
A load rolling element rolling groove that forms a loaded rolling element rolling path in cooperation with the rolling element rolling groove, and an unloaded rolling element rolling path that is arranged in parallel to the loaded rolling element rolling groove. A moving block main body having
A return that is attached to both end faces of the moving block main body in the relative movement direction and that is formed with an inner circumferential direction turning groove that connects a part of the loaded rolling element rolling path and a part of the unloaded rolling element rolling path. Members,
A pair of end plates that are attached to both end surfaces of the moving block main body in the relative movement direction so as to cover the return member, and in which an outer peripheral side direction change groove is formed on an attachment surface side with the moving block main body. ,
With
After the return member is attached on the basis of the moving block body, the end plate is attached to the moving block body so that the inner circumferential direction changing groove and the outer circumferential direction changing groove cooperate. And forming a direction change path connecting the loaded rolling element rolling path and the unloaded rolling element rolling path,
The no-load rolling element rolling path of the moving block main body part is configured such that the unloaded rolling element rolling path is the rolling unit rolling unit of the two sets with respect to a through hole formed in the moving block main body part. A motion guide device characterized by being configured by introducing and installing resin members formed in parallel with each other so as to correspond to a groove. The motion guide device according to claim 1,
2. The motion guide device according to claim 1, wherein the return member is formed with two inner circumferential direction change grooves in parallel. The motion guide apparatus according to claim 1 or 2,
The movement guide device is characterized in that the moving block main body and the return member are attached by fitting a convex portion formed on one of them and a concave portion formed on either side. . In the exercise | movement guide apparatus of any one of Claims 1-3,
The return member has at least one convex portion on a mounting surface with the moving block main body,
The motion guide device, wherein the convex portion is formed at a position corresponding to an intermediate portion of the inner peripheral side direction changing groove formed in parallel with two grooves with respect to the return member. In the exercise | movement guide apparatus of any one of Claims 1-4,
The resin member has a semi-cylindrical locking groove,
The return member has a locking projection corresponding to the groove shape of the locking groove,
The movement guide device is characterized in that the mounting position of the resin member and the return member with respect to the movable block main body is determined by fitting the locking protrusion into the locking groove.

Images