JP5335225B2 - Guide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guiding device having a new structure further saving on wiring and improving maintenability. <P>SOLUTION: The guiding device is formed so that a fixed side coil head 34 configured by assembling a fixed side coil member 32 to a fixed side core member 26 extending in the extending direction of a rail member 12 is assembled to a rail member 12, and a moving side coil head 60 configured by assembling a moving side coil member 58 to a moving side coil member 52 having an extension dimension shorter than that of the fixed side core member 26 is assembled to a sliding member 14, and then, transmission/reception surfaces 28, 54 of the fixed side core member 26 and the moving side core member 52 are positioned opposite each other with a predetermined distance. In this way, an opposite interface for transmitting electric signals by utilizing an electromagnetic induction is configured. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

The present invention relates to a guide device in which a slide member is assembled so as to be reciprocally displaceable in the extending direction of a rail member.

  2. Description of the Related Art Conventionally, various guide devices are used as a mechanism that enables displacement of a mechanical device in various mechanical devices such as machine tools, semiconductor manufacturing equipment, and medical equipment. As such a guide device, for example, a slide member provided with a moving base to which various mechanical devices and the like are attached as in the linear guide device described in Patent Document 1, a plurality of rolling conductors as support means for the rail member There are some which are assembled so as to be able to move directly through.

  By the way, the electrical connection between the mechanical device provided on the slide member side and the mechanical device provided on the rail member side is mostly performed by cable connection. However, for example, when many sensors are provided on the slide member side, it is necessary to route sensor signals to the rail member side for each sensor, which requires many signal lines. As a result, the manufacturing process is increased, and a large number of cables need to be wired with a margin to the extent that the displacement of the slide member is not hindered. In addition, it is necessary to consider the handling of a large number of cables in the design process, and there has been a problem that designing takes time.

  In addition, in order to avoid cable catching associated with displacement of the slide member, a cable carrier such as a so-called cable bear (registered trademark) that can follow the displacement of the slide member in a state where a plurality of cables are accommodated in parallel. May be used. However, since the cable carrier requires maintenance such as periodic replacement due to wear, there is a problem that the machine must be stopped each time.

JP 2007-1113610 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is a guide device having a novel structure that can further reduce wiring and improve maintainability. It is to provide.

  Hereinafter, embodiments of the present invention made to solve the above-described problems will be described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

That is, the present onset Ming, the extending direction of the rail member the moving base of the slide member by supporting via the supporting means sliding member having a movable carriage relative to the rail member extending over a predetermined size In a guide device that can be reciprocally displaced substantially in parallel to the rail side member, a stationary side coil head configured by combining a stationary side coil member with a stationary side core member extending in the extending direction of the rail member is assembled to the rail side member. A moving-side coil head configured by combining a moving-side coil member with a moving-side core member having an extension dimension shorter than that of the fixed-side core member is assembled to the slide- side member, and the fixed-side core member and the Electromagnetic induction is achieved by placing the transmitting and receiving surfaces, which are the open surfaces of the magnetic paths formed by the moving core members, facing each other at a predetermined distance from each other. Action are opposed type interface configuration for transmission of electrical signals by utilizing, and the one of the core member of the stationary core member and the movable core member, the outer circumferential butt on both sides of the center projection A lead groove is formed in an E-shaped axial direction in which a lead groove that opens to one side is formed between the central protrusion and the outer peripheral protrusion, thereby forming the lead in the one core member. One coil member wound around the central protrusion in the groove is attached to constitute one of the fixed-side coil head and the moving-side coil head. The other core member of the fixed side core member and the moving side core member has a pair of protruding wall portions protruding from a plate portion having a rectangular plate shape, and a groove portion is formed between the protruding wall portions. The fixed coil head and the movable coil head are configured such that the other coil member is attached to each projecting front end surface of the pair of projecting wall portions of the other core member. The other core head is configured, and the central protrusion of the one core member enters the groove of the other core member in a non-contact state with a gap therebetween, and the other core The projecting wall portions of the member enter the lead grooves formed on both sides of the central projecting portion of the one core member in a non-contact state with a gap therebetween, whereby the fixed-side coil head and the movement The counter type interface in which the side coil head is positioned to face is configured .
In addition, the present invention can also employ the configurations described in the following aspects.

  In the guide device having the structure according to the present aspect, by configuring the opposed interface, it is possible to transmit an electric signal between the rail member and the slide member. Note that the electrical signal in this specification includes both power and a signal. As a result, the routing of the cable that electrically connects the mechanical device to which the rail member is attached and the mechanical device to be attached to the slide member is reduced or unnecessary, so that the design process and the manufacturing process can be improved. The size of the device can also be reduced.

  Furthermore, in this aspect, the fixed-side core member and the movable-side core member constituting the opposed interface are assembled to the rail member and the slide member. In this case, the moving base is adapted to move parallel to the rail member, and the rail member and the slide member can maintain a high distance from each other even when the slide member is displaced. Even if the slide member is displaced, the facing distance (gap) between the fixed core member and the movable core member can be kept substantially constant. As a result, transmission quality can be kept substantially constant while the slide member is displaced, and stable transmission can be performed. In the present invention, the “parallel” movement means that the slide member can be moved along the rail member while keeping the relative position with respect to the rail member substantially constant. This does not mean the degree of parallelism between specific parts, such as being parallel to the upper surface of the rail member, etc. That is, even when the slide member is assembled in an inclined state with respect to the rail member, the slide member can be moved along the rail member while maintaining a specific inclined state with respect to the rail member. Meet the requirements for translation in the invention.

  In addition, since the moving-side core member is displaced without contacting the fixed-side core member, it is possible to reduce the risk of wear and the like, and to obtain better durability. And maintainability is improved.

  In addition, in this aspect, as a support means for supporting the slide member with respect to the rail member, various conventionally known ones such as a ball bearing and a fluid bearing can be employed. In particular, if a ball bearing or a fluid bearing is used as the support means, the risk of wear when the slide member is displaced can be reduced, and stable reciprocation can be achieved over a long period of time. Further, the rail member is not necessarily limited to a linear shape, and may be a curved shape or a combination shape of a straight line or a curved line.

A first aspect that may be employed in conjunction with the present invention, before outs Id device, together with the slide member there is a portal with a pair of leg portions protruding on both sides in the width direction of the moving base, the Each of the leg portions of the slide member is supported by the rail member via the support means. According to this aspect, since the movable base is supported from both sides in the width direction by the pair of leg portions, the slide member can be stably supported with respect to the rail member. Thereby, the opposing distance of a fixed side core member and a movement side core member can be maintained more stably, and the further improvement of transmission quality can be aimed at.

A second aspect that may be employed in the present invention is the guide device according to the first aspect, wherein the fixed-side core member is disposed in an intermediate portion of the pair of leg portions of the slide member. This is a feature. The intermediate part of the pair of leg portions of the slide member can maintain a higher separation distance between the rail member and the moving base, and therefore, a fixed-side core member and a moving-side core member that is opposed thereto are disposed in such a part. By doing so, the opposing distance of both core members can be maintained more highly.

In the guide device according to the first or second aspect, a third aspect that may be employed in the present invention is a groove shape in which the fixed-side core member extends with a constant cross-sectional shape in the extending direction of the rail member. The moving side core member has a groove shape extending with a substantially constant cross-sectional shape in the moving direction of the slide member, and the groove side wall end surface of the fixed side core member and the groove side wall end surface of the moving side core member Are the transmission and reception surfaces and are opposed to each other.

  According to this aspect, since the fixed-side core member and the movable-side core member have substantially constant cross-sectional shapes, it is possible to reduce the magnetic flux bias in these core members and to extend the core members. Stable transmission can be performed over the entire direction. Moreover, efficient transmission can be performed by concentrating the magnetic flux on the end face of the groove side wall of these core members. Here, the groove shape is exemplified by a U-shaped, C-shaped, E-shaped cross-sectional shape, and the like. In the case of the E-shape, it can be considered as a groove shape having a pair of grooves sandwiching the central protrusion.

A fourth aspect that may be employed in the present invention is the guide device according to any one of the first to third aspects, wherein the stationary core member is a portion of the rail member that faces the moving table. It is characterized by being arranged in.

  That is, in the guide device, the facing distance between the rail member and the moving table is maintained with high accuracy. Therefore, by making the fixed side core member and the moving side core member face each other at the facing portion between the rail member and the moving base, the distance between the fixed side core member and the moving side core member can be increased by using the characteristics of the guide device. High accuracy can be maintained.

According to a fifth aspect of the present invention , there is provided a fifth aspect of the guide device according to any one of the first to fourth aspects, wherein the groove is formed in the rail member and extends in the extending direction of the rail member. The fixed-side core member is disposed inside. According to this aspect, the fixed-side core member can be disposed so as to be embedded in the rail member, and the protrusion of the fixed-side core member from the rail member can be suppressed, and further downsizing can be achieved.

A sixth aspect that can be employed in the present invention is the guide device according to the fifth aspect, wherein the opening end surface of the concave groove and the transmission / reception surface of the stationary core member are positioned on substantially the same plane. It is characterized by that. According to this aspect, the separation distance between the slide member and the rail member can be further reduced, and further downsizing can be achieved.

A seventh aspect that can be employed in the present invention is the guide device according to the fifth or sixth aspect, wherein the bottom surface of the concave groove is more than the support portion of the slide member supported by the support means. It is characterized by being positioned on the side. According to this aspect, the entire thickness of the rail member can be resisted against unnecessary displacement of the slide member in directions other than the extending direction of the rail member, and the slide member can be supported more stably. .

An eighth aspect that can be employed in the present invention is the guide device according to any one of the first to seventh aspects, wherein the movable member of the slide member opens toward the rail member side. A space is provided, and the moving side core member is assembled to the space. According to this aspect, the protrusion of the moving side core member from the moving table can be suppressed, and further downsizing can be achieved. The void in this aspect may be a recess that opens toward the rail member, or a through-hole that penetrates the movable table.

According to a ninth aspect of the present invention , in the guide device according to any one of the first to eighth aspects, the transmission / reception surface in at least one of the fixed-side core member and the movable-side core member. A low-permeability member is disposed on the outer periphery excluding. According to this aspect, by sufficiently reducing the relative magnetic permeability outside the fixed-side core member or the moving-side core member, it is possible to suppress the leakage magnetic flux from the core member and further increase the transmission efficiency, The possibility of reducing the magnetic energy of the core member by generating eddy currents in the conductive member disposed around the core member can be reduced. Here, as the low magnetic permeability member, for example, a conventionally known member such as polytetrafluoroethylene or epoxy resin can be appropriately employed.

According to a tenth aspect of the present invention , the guide apparatus according to any one of the first to ninth aspects includes at least a pair of the opposed interfaces, and the signal is transmitted by one of the opposed interfaces. Is characterized in that a signal transmission path for transmitting power is configured and a power transmission path for transmitting power is configured by the other opposed interface. If it does in this way, transmission of both electric power and a signal can be performed between a rail member and a slide member.

An eleventh aspect that can be employed in the present invention is the guide device according to the tenth aspect, wherein the fixed-side core member constituting the one opposing interface is the rail member and the slide member. The signal transmission path is configured by being disposed at a position facing the moving table, while the stationary core member configuring the other facing interface is a position of the rail member facing the moving table. The power transmission path is configured by being disposed at a position away from the position.

  In this aspect, since mixing of noise is likely to be a problem, the opposed interface constituting the signal transmission path that requires a higher degree of adjustment of the gap between the core members than the transmission of power is separated. By providing the rail member that can maintain the distance with high accuracy at the opposite part of the moving base, the separation distance between both core members can be maintained with high accuracy, and signal transmission with reduced noise contamination can be maintained. Can be done. In addition, by providing the opposing interface that constitutes the power transmission path at a position away from the facing portion between the rail member and the moving table, it is possible to transmit power and signals while preventing the moving table from becoming large. It becomes possible.

A twelfth aspect that can be employed in the present invention is the guide device according to any one of the first to ninth aspects, wherein the fixed-side core member and the movable-side core member are formed of a central wall portion. An outer peripheral wall portion is formed on the outer side to form an E-shaped axial cross section in which a lead groove opened on one side is formed between the central wall portion and the outer peripheral wall portion. A first fixed coil member as the fixed coil member is assembled in the lead groove of the member, and a second fixed coil member as the fixed coil member is assembled on the outer peripheral surface of the outer peripheral wall. On the other hand, a first moving coil member as the moving coil member is assembled in the lead groove of the moving core member, and a second movement as the moving coil member is formed on the outer peripheral surface of the outer peripheral wall. Side A power transmission path configured to transmit power including the first stationary coil member and the first moving coil member, and the second stationary coil. A signal transmission path for transmitting a signal including the member and the second moving-side coil member is configured.

  According to this aspect, while using the common core member, between the first fixed coil member and the second fixed coil member and between the first moving coil member and the second moving coil member. Interference of magnetic flux between them can be reduced or avoided, and a plurality of transmission paths, that is, a power transmission path and a signal transmission path, can be configured using a common core member. Thereby, the power transmission line and the signal transmission line can be configured more compactly, and further downsizing can be achieved.

  That is, in this aspect, when the fixed-side core member is described as an example, since the core member is not disposed outside the second fixed-side coil member, the relative permeability around the second fixed-side coil member is determined. The magnetic susceptibility is sufficiently smaller than that of the fixed core member. This and the characteristics of the magnetic field lines that take the shortest path that minimizes the magnetic resistance cooperate, so that most of the magnetic flux generated from the first fixed coil member is closer to the inside of the outer peripheral wall of the fixed core member. Pass through. On the other hand, the magnetic flux generated from the second fixed-side coil member passes through the outer portion of the outer peripheral wall of the fixed-side core member. As a result, interference between the magnetic flux generated from the first fixed-side coil member and the magnetic flux generated from the second fixed-side coil member can be suppressed. A transmission line and a signal transmission line can be configured.

A thirteenth aspect that can be employed in the present invention is the guide device according to any one of the first to twelfth aspects, wherein a plurality of the slide members are attached to one rail member. And the same moving side coil head is assembled to each of the plurality of slide members.

  If it does in this way, transmission of an electric signal can be performed to each machine device provided in a plurality of slide members. Therefore, in this embodiment, variation in the separation distance between each moving side coil head and fixed side coil head provided on each slide member is suppressed, so that stable transmission can be performed for all of the plurality of slide members. Can be done.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG. 1 and FIG. 2 show a linear guide device 10 according to a guide device as a first embodiment of the present invention. The linear guide device 10 has a structure in which a slide member 14 is assembled to a linearly extending rail member 12 so as to be reciprocally displaceable in the extending direction of the rail member 12. In the following description, the vertical direction means the vertical direction in FIG. 1 unless otherwise specified.

  More specifically, the rail member 12 is formed of a steel material such as stainless steel, for example, and is a rod-like member that extends in a straight line over a predetermined dimension with a substantially constant substantially rectangular cross-sectional shape. Rail member side guide grooves 18 extending in the extending direction of the rail member 12 are formed on both side surfaces 16, 16 of the rail member 12. The rail member side guide groove 18 has a substantially semicircular cross-sectional shape opened to the side of the rail member 12. Further, a plurality of bolt holes 22 are formed at both ends in the width direction of the upper surface 20 of the rail member 12 with a predetermined interval in the extending direction of the rail member 12.

  Furthermore, in particular, in the rail member 12 in the present embodiment, a concave groove 24 having a rectangular cross-sectional shape opening above the rail member 12 and extending in the extending direction of the rail member 12 is formed in the central portion of the upper surface 20 in the width direction. . Here, the bottom surface 25 of the concave groove 24 is positioned above the rail member side guide groove 18.

  A fixed-side core member 26 is disposed in the concave groove 24. The fixed-side core member 26 is formed of a ferromagnetic material such as ferrite, for example, and has a semi-cylindrical shape extending over a predetermined dimension with a constant C-shaped cross section, and has a groove shape opening to one side. Yes. In the present embodiment, the fixed-side core member 26 is opened upward, and the opening end surface 28 as the groove side wall end surface is positioned on the same plane as the upper surface 20 of the rail member 12 serving as the opening end surface of the groove 24. In this state, it is disposed in the concave groove 24. Thereby, the extending direction of the fixed-side core member 26 is made equal to the extending direction of the rail member 12. In particular, the fixed-side core member 26 in the present embodiment is configured by arranging a plurality of partial core members 30 in series with their axial end faces in contact with each other. Of course, it is also possible to form 26 integrally.

  Further, the fixed core member 26 is assembled with a fixed coil member 32 formed by winding a lead wire made of copper or the like a predetermined number of times in the axial direction of the fixed core member 26. Note that the number of turns of the stationary coil member 32 can be set as appropriate in consideration of required transmission characteristics and the like. For example, the fixed-side coil member 32 may be wound only around a half circumference of the fixed-side core member 26, or the fixed-side coil member 32 may be wound on the fixed-side core member 26 in a layered manner. good. Thus, the fixed-side coil head 34 is configured by the fixed-side core member 26 and the fixed-side coil member 32, and a magnetic path of the fixed-side coil member 32 is formed by the fixed-side core member 26, and the fixed-side core member The opening end face 28 of 26 is a transmission / reception surface that is an open surface of the magnetic path. The fixed-side coil head 34 is assembled in the rail member 12 by being disposed in the concave groove 24.

  Furthermore, particularly in the present embodiment, a gap member 36 as a low permeability member is interposed between the fixed-side core member 26 and the rail member 12, and the fixed-side core member 26 serves as a transmission / reception surface. The outer peripheral surface excluding the opening end face 28 is covered with a gap member 36. Here, as the gap member 36, a member having a small relative magnetic permeability can be appropriately employed. Specific examples include polytetrafluoroethylene, polyurethane, and epoxy resin. More preferably, a non-conductive member is employed as the gap member 36. In the present embodiment, urethane foam is used as the gap member 36.

  On the other hand, the slide member 14 is formed of, for example, a steel material such as stainless steel, and a moving table 38 having a substantially flat plate shape and a pair of leg portions 40 protruding from both ends in the width direction of the moving table 38 are integrally formed. It is said that it was made into a gate shape. A plurality of bolt holes 42 are formed at both ends in the width direction of the upper surface of the movable table 38.

  A slide member side guide groove 46 extending in the extending direction of the rail member 12 is formed on the inner surface 44 of the leg portion 40 when the slide member 14 is attached to the rail member 12. The slide member side guide groove 46 has a substantially semicircular cross-sectional shape opened inward of the slide member 14, and the diameter dimension thereof is substantially equal to the diameter dimension of the rail member side guide groove 18. . The rail member side guide groove 18 is communicated with a return guide path 48 provided in the leg portion 40. The return guide path 48 has a circular cross-sectional shape and is formed along the extending direction of the rail member side guide groove 18. Here, the diameter of the return guide path 48 is slightly larger than the diameter of a steel ball 66 described later.

  Furthermore, in particular, in the slide member 14 in the present embodiment, a through hole 50 as a space penetrating in the thickness direction of the moving table 38 is formed in the central portion of the moving table 38 in the width direction. In addition, a moving-side core member 52 is disposed. The moving-side core member 52 has the same structure as the partial core member 30 constituting the fixed-side core member 26 described above. Specifically, the moving-side core member 52 has a substantially semi-cylindrical shape having a substantially constant C-shaped cross section formed of a ferromagnetic material such as ferrite and extending over a predetermined dimension shorter than the fixed-side core member 26. It is made into the groove shape opened to one side. The moving-side core member 52 is in a state where the axial direction thereof is parallel to the extending direction of the leg portion 40 and the opening end surface 54 as the groove side wall end surface is positioned in the protruding direction of the leg portion 40. It is disposed in the through hole 50. Here, in particular, the moving-side core member 52 in the present embodiment has the opening end surface 54 positioned substantially on the same plane as the lower surface 56 of the moving table 38, and the moving-side core member 52 has the upper surface 39 of the moving table 38. And it is arrange | positioned in the through-hole 50, without projecting from the lower surface 56. FIG.

  The moving core member 52 is assembled with a moving coil member 58 formed by winding a lead wire made of copper or the like a predetermined number of times in the axial direction of the moving core member 52. Note that the number of turns of the moving coil member 58 can be set as appropriate in consideration of required transmission characteristics and the like. For example, the moving-side coil member 58 may be wound only half a circumference of the moving-side core member 52, or the moving-side coil member 58 may be wound on the moving-side core member 52 so as to overlap several times. good. Accordingly, the moving side coil head 60 is configured by the moving side core member 52 and the moving side coil member 58, and the moving side core member 52 forms a magnetic path of the moving side coil member 58, and the moving side core member An opening end surface 54 of 52 is a transmission / reception surface serving as an open surface of the magnetic path. The moving side coil head 60 is assembled in the slide member 14 by being disposed in the through hole 50.

  Furthermore, a gap member 62 as a low permeability member having a structure substantially the same as that of the gap member 36 is interposed between the moving core member 52 and the moving table 38. In particular, in the present embodiment, the gap member 62 has a thin plate shape, and is fixed to the inner surface of the through hole 50 facing the moving side core member 52 in the direction perpendicular to the axis. Then, the outer peripheral surfaces on both sides in the direction perpendicular to the axis of the moving core member 52 are fixed to the gap member 62, so that the moving core member 52 is fixed to the moving table 38 via the gap member 62, An opening end surface 54 serving as a transmission / reception surface of the moving-side core member 52 is exposed below the moving table 38 without being covered by the gap member 62.

  The slide member 14 having such a structure is assembled to the rail member 12 in a state where the lower surface 56 of the movable table 38 is opposed to the upper surface 20 of the rail member 12 with a predetermined distance. Here, the inner surface 44 of the leg portion 40 of the slide member 14 is positioned opposite to the side surface 16 of the rail member 12 with a predetermined distance, and the slide member side guide groove 46 formed on the inner surface 44 of the leg portion 40 and the rail. Rail member side guide grooves 18 formed on the side surface 16 of the member 12 are opposed to each other. Thereby, the load path 64 is formed by the slide member side guide groove 46 and the rail member side guide groove 18. A plurality of steel balls 66 as rolling elements are accommodated in the load path 64, and both leg portions 40 of the slide member 14 are supported with respect to the rail member 12 through the steel balls 66. Thus, the slide member 14 can reciprocate in parallel along the extending direction of the rail member 12 while maintaining the separation distance between the lower surface 56 of the movable table 38 and the upper surface 20 of the rail member 12 via the steel ball 66. Supported. The load path 64 is communicated with a return guide path 48 formed in the leg portion 40, and a circulation path in which the steel ball 66 is circulated with the movement of the slide member 14 is configured. As described above, in the present embodiment, the support means that includes the steel ball 66, the load path 64, and the return guide path 48 is configured to support the slide member 14 so as to be reciprocally displaceable in parallel to the rail member.

  In this assembled state, the fixed-side core member 26 disposed in the intermediate portion in the width direction of the rail member 12 is positioned in the intermediate portion in the opposing direction of the leg portion 40 of the slide member 14. Then, the opening end surface 54 of the moving core member 52 provided on the slide member 14 and the opening end surface 28 of the fixed core member 26 provided on the rail member 12 are opposed to each other in a non-contact state with a predetermined distance therebetween. Thus, the surfaces of the slide member 14 are formed with surfaces extending in the moving direction along the rail member 12. In particular, in the present embodiment, the separation distance between the opening end surface 54 of the moving-side core member 52 and the opening end surface 28 of the fixed-side core member 26 is the distance between the lower surface 56 of the moving table 38 and the upper surface 20 of the rail member 12 in the slide member 14. It is equal to the distance. Since the slide member 14 is displaceable in the extending direction of the rail member 12, when the slide member 14 is moved, the moving-side core member 52 uses the opening end surface 54 as the opening end surface of the fixed-side core member 26. 28, and can be displaced along the extending direction of the fixed core member 26 while maintaining a parallel facing state and maintaining the distance between the facing surfaces substantially constant.

  In the linear guide device 10 having such a structure, for example, the rail member 12 is attached to one mechanical device 68a by using the bolt hole 22, while the other mechanical device 68b is connected to the moving base 38 of the slide member 14 by the bolt hole. By being attached using 42, the mechanical device 68b is assembled to the mechanical device 68a so as to be displaceable along the extending direction of the rail member 12. The slide member 14 is displaced via the mechanical device 68b by, for example, a conventionally known ball screw or linear actuator connected to the mechanical device 68b. The lead wire constituting the fixed coil member 32 in the fixed coil head 34 is electrically connected to the fixed communication circuit 70 provided in the mechanical device 68a, while the moving coil in the moving coil head 60 is connected. The lead wire constituting the member 58 is electrically connected to the moving side communication circuit 72 provided in the mechanical device 68b. As a result, electrical signals can be transmitted between the stationary coil head 34 and the moving coil head 60.

  First, a signal generated by a control circuit (not shown) or the like provided in the mechanical device 68 a is superimposed on a high frequency voltage by the fixed side communication circuit 70 and then supplied to the fixed side coil member 32. Note that the high-frequency voltage on which the signal is superimposed is generated by the fixed-side communication circuit 70, and the frequency varies depending on the data size of the signal, the usage environment, and the like. Is appropriately set within a range of about 100 Hz to 10 GHz.

  When a high frequency voltage is supplied to the stationary coil member 32, a magnetic flux that passes through the stationary coil member 32 and changes according to the output frequency is generated. Here, in the present embodiment, the fixed-side coil member 32 is disposed in a state of being wound around the fixed-side core member 26, so that substantially all of the magnetic flux passing through the fixed-side coil member 32 is fixed. To pass through. A magnetic path is formed by the fixed-side core member 26, and the magnetic flux generated in the fixed-side coil member 32 jumps out of the opening end face 28 that is the open surface of the magnetic path, and is positioned opposite to the moving-side core member. 52 enters the open end surface 54 of the moving side core member 52, passes through the moving side core member 52, and is linked to the moving side coil member 58 that is extrapolated to the moving side core member 52. Here, particularly in the present embodiment, since both core members 26 and 52 have a constant cross-sectional shape, the deviation of magnetic flux is also reduced.

  As a result, the fixed coil member 32 and the moving coil member 58 are electromagnetically coupled, and an induced electromotive force is generated in the moving coil member 58 due to the mutual induction action, and is supplied to the fixed coil member 32. A high frequency voltage is extracted from the moving coil member 58. In this way, electric power is transmitted from the stationary coil member 32 to the moving coil member 58 in a non-contact state. The signal superimposed on the high-frequency voltage extracted from the moving coil member 58 is extracted by the moving communication circuit 72 and then transmitted to various control circuits (not shown) provided in the mechanical device 68b. The

  As described above, in the present embodiment, the opposed interface including the stationary coil head 34 and the moving coil head 60 is configured to transmit an electric signal using electromagnetic induction. Thus, a signal transmission path for transmitting a signal is configured.

  Note that, for example, a signal may be transmitted from the mechanical device 68b to the mechanical device 68a. In such a case, in contrast to the case where the signal is transmitted from the mechanical device 68a to the mechanical device 68b as described above, a signal generated by a control circuit (not shown) provided in the mechanical device 68b is transferred to the mobile communication. After being superposed on the high frequency voltage by the circuit 72 and transmitted from the moving side coil member 58 to the fixed side coil member 32 through the moving side core member 52 and the fixed side core member 26 in a non-contact state, for fixed side communication The circuit 70 extracts the high frequency voltage.

  In the linear guide device 10 having such a structure, the slide member 14 is supported by the rail member 12 via the steel balls 66, so that the slide member 14 and the upper surface 20 of the rail member 12 opposed to each other are slid. The member 14 can be reciprocally displaced in the extending direction of the rail member 12 of the slide member 14 while maintaining the separation distance between the member 14 and the lower surface 56 of the movable table 38 with high accuracy. At the same time, since the slide member 14 is supported via the steel ball 66, the frictional resistance at the time of displacement of the slide member 14 is reduced, and a stable linear motion displacement is realized over a long period of time. I can do it.

  The rail member 12 and the slide member 14 are provided with opposing interfaces configured to include the fixed-side and moving-side coil heads 34 and 60, thereby transmitting electrical signals between the rail member 12 and the slide member 14. It is possible to do. As a result, the number of cables that electrically connect the mechanical device 68a attached to the rail member 12 and the mechanical device 68b attached to the slide member 14 can be reduced or eliminated, and the design process and manufacturing due to wiring can be reduced. The number of steps in the process can be reduced, and the size of the mechanical device can be reduced.

  Therefore, particularly in the present embodiment, the opening end surfaces 28 and 54 serving as the transmitting and receiving surfaces of the fixed side coil head 34 and the moving side coil head 60 are flush with the upper surface 20 of the rail member 12 and the lower surface 56 of the moving table 38. Therefore, even when the slide member 14 is displaced by skillfully utilizing the high-precision holding effect of the separation distance between the upper surface 20 and the lower surface 56 by the linear guide mechanism, the gap between the opening end surfaces 28 and 54 is improved. The separation distance can be kept substantially constant. Thereby, it is possible to perform stable transmission regardless of the position of the slide member 14. In addition, particularly in the present embodiment, the bottom surface 25 of the concave groove 24 provided with the stationary coil head 34 is the rail member side guide groove 18, in other words, the slide member rather than the steel ball 66 that supports the slide member 14. 14, the thickness dimension between the steel balls 66 disposed on both side surfaces 16, 16 of the rail member 12 is ensured, and therefore, for example, the slide member 14 is arranged in the width direction of the rail member 12. In this case, the slide member 14 can be held with the entire thickness of the rail member 12, and the slide member 14 can be stably supported, and the separation distance between the opening end faces 28 and 54 can be maintained. Can be maintained with higher accuracy.

  The number of slide members 14 is not limited in any way, and a plurality of slide members 14 may be assembled to the rail member 12, and the moving side coil heads 60 having the same structure may be provided on each of the plurality of slide members 14. Of course it is possible. In such a case, according to the present embodiment, the separation distance between the opening end surface 54 of the moving-side coil head 60 of each slide member 14 and the opening end surface 28 of the stationary-side coil head 34 can be accurately aligned. Variations in transmission efficiency between the slide members 14 can also be suppressed. Here, the signal transmitted from the fixed side coil head 34 is received by the moving side coil heads 60 of all the slide members 14, but is attached to a specific slide member 14 among the plurality of slide members 14. In order to drive the mechanical device, for example, each slide member 14 is given a unique identification number that does not overlap with each other, and the identification number of the target slide member 14 is given in the signal to be transmitted, and each slide member 14 14. When the identification number included in the received signal is not an identification number indicating itself, the signal is discarded, whereas when it is an identification number indicating itself, a signal selection circuit that performs an operation based on the signal It can be easily realized by providing the above.

  In particular, in the present embodiment, gap members 36 and 62 having a low relative magnetic permeability are provided between the fixed core member 26 and the rail member 12 and between the movable core member 52 and the slide member 14. . As a result, the leakage magnetic flux from both the core members 26 and 52 is suppressed, and the occurrence of eddy currents in the rail member 12 and the slide member 14 due to the influence of the lines of magnetic force is also suppressed. , 52 can reduce the risk of the magnetic energy being reduced.

  Next, FIG. 3 shows a linear guide device 100 according to a guide device as a second embodiment of the present invention. In the following description, members and parts that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and detailed description thereof is omitted.

  The linear guide device 100 has a structure including a pair of opposed interfaces. More specifically, the rail member 12 is provided with a fixed-side coil head 102 having the same structure as the fixed-side coil head 34 as well as the fixed-side coil head 34 in the first embodiment. Similar to the fixed coil head 34, the fixed coil head 102 is configured by assembling a fixed coil member 106 to a fixed core member 104. The stationary coil head 102 is disposed in the groove 108 having the same shape as the groove 25 via the gap member 36. In the present embodiment, the groove 24 is formed at a position slightly deviated laterally from an intermediate portion in the width direction of the rail member 12, and the groove 24 and the groove 108 are intermediate in the width direction of the rail member 12. It is formed in parallel across the part.

  On the other hand, the slide member 14 in this embodiment is provided with a moving coil head 110 similar to the moving coil head 60 in addition to the moving coil head 60 in the first embodiment. Similar to the moving coil head 60, the moving coil head 110 is configured by assembling the moving coil member 114 to the moving core member 112. The moving side coil head 110 is disposed in the through hole 116 having the same shape as the through hole 50 via the gap member 62. In the present embodiment, the through hole 50 is formed at a position slightly deviated laterally from the intermediate portion in the width direction of the slide member 14, and the through hole 50 and the through hole 116 are intermediate in the width direction of the slide member 14. It is formed in parallel across the part.

  Thereby, in the assembly state of the slide member 14 to the rail member 12, the fixed side coil head 34 and the moving side coil head 60 are positioned to face each other, and the fixed side coil head 102 and the moving side coil head 110 are set to face each other. . As in the first embodiment, the lead wires forming the fixed coil member 32 in the fixed coil head 34 are electrically connected to the fixed communication circuit 70 and moved in the moving coil head 60. The lead wire forming the side coil member 58 is electrically connected to the moving side communication circuit 72. Thereby, it is possible to transmit a signal between the fixed side coil head 34 and the moving side coil head 60.

  On the other hand, the lead wire forming the fixed coil member 106 in the fixed coil head 102 is electrically connected to a conventionally known inverter 118 of, for example, a CVCF type or VVVF type provided in the mechanical device 68a, and also on the moving side. A lead wire forming the moving-side coil member 114 in the coil head 110 is electrically connected to a rectification stabilization circuit 120 provided in the mechanical device 68b. Thereby, in this embodiment, electric power can be transmitted between the fixed side coil head 102 and the moving side coil head 110.

  First, a DC voltage of a power supply circuit (not shown) provided in the mechanical device 68a is converted into a high frequency voltage by the inverter 118. Here, the frequency (output frequency) of the high-frequency voltage converted by the inverter 118 varies depending on the power to be supplied, the usage environment, etc., but in this embodiment, it is set appropriately within a range of about 100 Hz to 500 MHz. Has been.

  The high-frequency voltage converted by the inverter 118 is fed to the fixed-side coil member 106, so that the fixed-side coil member is the same as the fixed-side coil head 34 and the moving-side coil head 60 in the first embodiment described above. 106 and the moving-side coil member 114 are electromagnetically coupled to each other, so that an induced electromotive force is generated in the moving-side coil member 114 due to the mutual induction action, and the high-frequency voltage supplied to the fixed-side coil member 106 is moved to the moving-side coil member 114. Taken from. In this way, electric power is transmitted from the stationary coil member 106 to the moving coil member 114 in a non-contact state. The high-frequency voltage extracted from the moving coil member 114 is converted into a DC voltage by the rectifying and stabilizing circuit 120 provided in the mechanical device 68b, and then various electric circuits (not shown) provided in the mechanical device 68b are used. It will be supplied to the machine.

  As described above, in the present embodiment, the first counter type interface is configured including the fixed side coil head 34 and the moving side coil head 60, and the first counter type interface transmits signals. On the other hand, the second opposing interface is configured to include the stationary coil head 102 and the moving coil head 110, and the second opposing interface is used to transmit power. It is used as a transmission line. In this way, it is possible to transmit power in addition to signals between the rail member 12 and the slide member 14, further reducing the design and manufacturing labor caused by cable connection, Further downsizing of the apparatus can be achieved. As is apparent from the present embodiment, the number of opposed interfaces is not necessarily limited to one, and two or more opposed interfaces can be provided.

  In the present embodiment, for example, a signal connector configured by a connector electrically connected to the mobile communication circuit 72 or a power connector configured by a connector electrically connected to the rectifying and stabilizing circuit 120 is used. A connector may be provided on the slide member 14 or the like. In this way, it is possible to more easily connect the electronic device or the mechanical device provided on the mechanical device 68b side, and it is also possible to more easily exchange the mechanical device attached to the slide member 14.

  Next, FIG. 4 shows a linear guide device 130 according to a guide device as a third embodiment of the present invention. The linear guide device 130 is provided with a fixed coil head 132 on the side surface 16 of the rail member 12 in the linear guide device 10 according to the first embodiment described above, and a moving coil head 134 on the leg portion 40 of the slide member 14. Are attached so as to face the fixed-side coil head 132.

  The fixed side coil head 132 and the moving side coil head 134 have substantially the same structure as the fixed side coil head 34 and the moving side coil head 60 in the first embodiment, respectively. The moving-side coil head 134 has a structure in which the moving-side coil member 142 is assembled to the moving-side core member 140, while the fixed-side coil member 138 is assembled to the side-core member 136.

  The fixed-side core member 136 is fixed below the lower end surface of the leg portion 40 of the slide member 14 on the one side surface 16 of the rail member 12, and the opening end surface 146 is placed outside the rail member 12. It is arranged toward. On the other hand, the moving-side core member 140 faces the opening end surface 148 of the moving-side core member 140 from the leg portion 40 and the opening end surface 146 of the fixed-side core member 136 provided on the rail member 12 with a predetermined distance therebetween. It is supported at a position where it can be positioned. As a result, the moving-side core member 140 is displaced in the extending direction of the fixed-side core member 136 while maintaining the non-contact state facing the fixed-side core member 136 in a non-contact state with high accuracy. .

  In the linear guide device 130 having such a structure, the fixed-side coil member 32 in the fixed-side coil head 34 is electrically connected to the fixed-side communication circuit 70 as in the first embodiment. The moving coil member 58 in the moving coil head 60 is electrically connected to the moving communication circuit 72. Thereby, it is possible to transmit a signal between the stationary coil head 34 and the moving coil head 60. As described above, in the present embodiment, the first counter-type interface is configured including the fixed-side coil head 34 and the moving-side coil head 60, and a signal for transmitting a signal through the first counter-type interface is used. A transmission path is configured.

  On the other hand, in the fixed side coil head 132 and the moving side coil head 134, as in the second embodiment, the fixed side coil member 138 is electrically connected to the inverter 118, while the moving side coil member 142 is rectified and stabilized. It is electrically connected to the circuit 120. As a result, power can be transmitted between the fixed coil head 132 and the moving coil head 134. As described above, in the present embodiment, the second opposing interface is configured including the fixed coil head 132 and the moving coil head 134, and the power is transmitted through the second opposing interface. A transmission path is configured.

  According to this embodiment, it is possible to transmit power and signals between the rail member 12 and the slide member 14 in substantially the same manner as in the second embodiment described above. In particular, in the present embodiment, the fixed side coil head 132 and the moving side coil head 134 constituting the power transmission path are positioned away from the upper surface 20 of the rail member 12 and the lower surface 56 of the moving table 38 in the slide member 14. Therefore, the width dimension of the rail member 12 and the slide member 14 can be made compact. At the same time, the fixed coil head 34 and the open end surfaces 28 and 54 of the moving coil head 60 constituting the signal transmission path, in which noise is likely to be a problem as compared with power transmission, are connected to the upper surface 20 of the rail member 20 and the slide. By disposing on the lower surface 56 of the member 14, the highly accurate positioning effect by the rail member 12 and the slide member 14 can be used effectively, and the opening end surfaces 28 and 54 of both the coil heads 34 and 60 can be used. The separation distance can be kept constant with high accuracy. This also reduces the risk of noise contamination during signal transmission.

  Next, FIG. 5 shows a linear guide device 150 according to a guide device as a fourth embodiment of the present invention. In the linear guide device 150, a stationary coil head 152 is disposed in the concave groove 24 of the rail member 12, and a movable coil head 154 is disposed in the through hole 50 of the slide member 14. .

  Here, the fixed-side core member 156 constituting the fixed-side coil head 152 is shaped to extend over a predetermined dimension with a constant E-shaped axial cross section, and protrudes upward at the central portion thereof. A central projection 158 is formed as a central wall portion, and a central projection 158 is formed on both sides of the central projection 158 with a lead groove 160 opened in the projecting direction of the central projection 158. The outer peripheral projection 162 as an outer peripheral wall projecting in the same direction is integrally formed. As a result, the fixed-side core member 156 has a groove shape having a pair of lead grooves 160.

  A lead wire formed of copper or the like is wound around the central protrusion 158 of the fixed-side core member 156 a predetermined number of times, whereby the first fixed-side coil member 164 is assembled in the lead groove 160. On the outermost peripheral surface of the fixed-side core member 156, a lead wire formed of copper or the like is wound a predetermined number of times on the outermost peripheral surface of the fixed-side core member 156 including the outer surface 166 of the outer peripheral protrusion 162. A second fixed coil member 168 is assembled. Thereby, in this embodiment, the fixed side coil head 152 is comprised including the fixed side core member 156 and the 1st and 2nd fixed side coil members 164 and 168, and the magnetic field of both the coil members 164 and 168 is comprised. The path is formed by the fixed-side core member 156, and the transmission / reception surface serving as the open surface of the magnetic path is configured including the open end surface 170 of the lead groove 160.

  The fixed-side coil head 152 having such a structure is disposed in the concave groove 24 formed in the rail member 12 in substantially the same manner as the fixed-side coil head 34 in the first embodiment. Therefore, particularly in the present embodiment, the opening end surface 170 of the lead groove 160 is positioned on the same plane as the upper surface 20 of the rail member 12.

  Further, particularly in the present embodiment, a gap member 36 is interposed between the fixed core member 156 and the rail member 12 in substantially the same manner as in the first embodiment, and the outer surface 166 of the fixed core member 156 and The outer bottom surface 172 is covered with the gap member 36.

  On the other hand, the moving-side core member 174 constituting the moving-side coil head 154 has the same E-shaped axial cross section as the fixed-side core member 156, and a central protrusion as a central wall protruding downward An outer peripheral protrusion 178 as an outer peripheral wall is integrally formed on both sides of the 176 with a lead groove 180 opened in the protruding direction of the central protrusion 176. Thereby, the moving-side core member 174 has a groove shape having a pair of lead grooves 180. Here, the extension dimension of the moving-side core member 174 is smaller than the extension dimension of the fixed-side core member 156 and is a length dimension that can be disposed in the through hole 50 of the slide member 14.

  Similarly to the above-described fixed-side core member 156, the first moving-side coil member 182 is assembled in the lead groove 180 of the moving-side core member 174, and the moving side including the outer surface 184 of the outer peripheral projection 178 A moving coil head 154 is configured by assembling the second moving coil member 186 on the outermost peripheral surface of the core member 174. As a result, the magnetic paths of the coil members 182 and 186 are formed by the moving core member 174, and a transmission / reception surface serving as an open surface of the magnetic path including the opening end surface 188 of the lead groove 180 is formed.

  The moving side coil head 154 having such a structure is disposed in a through hole 50 provided in the slide member 14 in substantially the same manner as the moving side coil head 60 in the first embodiment. Therefore, particularly in the present embodiment, the opening end surface 188 of the moving-side core member 174 is positioned on the same plane as the lower surface 56 of the moving table 38, and the outer bottom surface 190 of the moving-side core member 174 is positioned on the moving table 38. The moving-side core member 174 is disposed without projecting up and down the moving table 38.

  Further, particularly in the present embodiment, the gap member 62 is interposed between the moving side core member 174 and the moving table 38 in the same manner as in the first embodiment, and the outer surface 184 of the moving side core 174 is a gap. Covered with a member 62.

  In the assembled state of the slide member 14 to the rail member 12, the open end surfaces 170 and 188 of the core members 156 and 174 are positioned opposite each other with a predetermined distance between the coil heads 152 and 154. When the slide member 14 is displaced in the extending direction of the rail member 12, the moving-side core member 174 extends the fixed-side core member 156 while maintaining the separation distance between the opening end surfaces 170 and 180 with high accuracy. It can be displaced in the direction.

  In the linear guide device 150 having such a structure, for example, the first fixed coil member 164 is electrically connected to the inverter 118 and the second fixed coil member 168 is electrically connected to the fixed communication circuit 70. On the other hand, the first moving coil member 182 is electrically connected to the rectification stabilization circuit 120 and the second moving coil member 186 is electrically connected to the moving communication circuit 72. The

  Then, a high-frequency voltage is fed to the first fixed coil member 164 by the inverter 118, whereby a magnetic flux penetrating the first fixed coil member 164 is generated. Therefore, in the present embodiment, the core member is not provided outside the second fixed side coil member 168, and the gap member 36 is disposed, so that the second fixed side coil member 168 is disposed. The surrounding relative magnetic permeability is made sufficiently smaller than that of the fixed-side core member 156. This and the characteristics of the magnetic field lines taking the shortest path that minimizes the magnetic resistance cooperate, and most of the magnetic flux passing through the first fixed-side coil member 164 is closer to the inside of the outer peripheral wall 162 of the fixed-side core member 156. The first moving side coil member 182 assembled to the opposing moving side core member 174 is linked with the opening side surfaces 170 and 188 that pass through the region and are opposed to each other. As a result, the first fixed coil member 164 and the first moving coil member 182 are electromagnetically coupled, and electric power is taken out by the rectifying and stabilizing circuit 120 connected to the first moving coil member 182. Thus, in the present embodiment, the power transmission path is configured including the first fixed coil member 164 and the first moving coil member 182.

  Furthermore, a high-frequency voltage with a signal superimposed on the second fixed-side coil member 168 is supplied by the fixed-side communication circuit 70, thereby generating a magnetic flux penetrating the second fixed-side coil member 168. The magnetic flux penetrating through the second fixed coil member 168 passes through the outer portion of the outer peripheral wall 162 of the fixed core member 156 and enters and exits the open end faces 170 and 188 positioned opposite to each other. It is linked to the second moving coil member 186 assembled to the moving core member 174. As a result, the second fixed side coil member 168 and the second moving side coil member 186 are electromagnetically coupled, and the signal superimposed on the electric power extracted from the second moving side coil member 186 is transferred to the mobile side communication. The circuit 72 is taken out. Thus, in the present embodiment, the signal transmission path is configured including the second fixed coil member 168 and the second moving coil member 186.

  In the linear guide device 150 having such a structure, the second fixed-side coil member 168 and the second moving-side coil member 186 are placed on the outer peripheral surfaces of the fixed-side core member 156 and the moving-side core member 174, respectively. By using the common core member, the interference between the magnetic flux generated from the first fixed coil member 164 and the magnetic flux generated from the second fixed coil member 168 can be reduced. However, it is possible to perform transmission with reduced noise mixing. Thereby, it is possible to transmit both electric power and a signal using one core member, and further downsizing can be achieved.

  Next, FIG. 6 shows a linear guide device 200 according to a guide device as a fifth embodiment of the present invention. In the linear guide device 200, the rail member 12 is fixed to the base 202 using the bolt holes 22, and the second fixed side coil head 206 and the third fixed side are respectively provided on both side surfaces 204 of the base 202. While the coil head 208 is fixed, the second moving side coil head 210 and the third moving side facing the second fixed side coil head 206 and the third fixed side coil head 208 on the slide member 14. The coil head 212 is fixed.

  The second stationary coil head 206 is configured by assembling a stationary coil member 216 to a stationary core member 214. The fixed core member 214 has a groove shape including an opening 218 having a curved cross-sectional shape that opens on one end surface of a rectangular block shape, and extends over a predetermined dimension with a constant cross-sectional shape. Then, the fixed-side coil member 216 is formed by being wound around the opening end surface 220 of the opening 218 a predetermined number of times, and is assembled to the fixed-side core member 214.

  The second fixed-side coil head 206 is attached to the base 202 so as to extend in the extending direction of the rail member 12 with the opening end face 220 facing the outside of the base 202. In particular, in the present embodiment, the second fixed coil head 206 is fixed to the base 202 via a gap member 222 made of, for example, an epoxy resin as a low magnetic permeability member. Thus, the second fixed coil head 206 is assembled to the rail member 12 via the base 202.

  On the other hand, the second moving-side coil head 210 is configured by assembling the moving-side coil member 226 to the moving-side core member 224 having a shorter length than the fixed-side core member 214 in the second fixed-side coil head 206. Has been. Similar to the fixed core member 214, the moving core member 224 has a groove shape having a curved opening 228. A lead coil is wound a predetermined number of times in the axial direction of the moving core member 224 to form a moving coil member 226 and assembled to the moving core member 224. In particular, in this embodiment, the lead wire forming the moving coil member 226 passes through the inside of the support plate 230 that is fixed to the leg portion 40 of the slide member 14 and extends to a position facing the side surface 204 of the base 202. Thus, the moving side core member 224 is wound around on the side opposite to the opening direction of the opening 228. And it is attached to the inner surface 232 of the support plate 230 with the opening end surface 234 facing the base 202.

  As a result, the second stationary coil head 206 and the second moving coil head 210 are opposed to each other with the respective opening end surfaces 220 and 234 spaced apart from each other by a predetermined distance. Accordingly, the second moving-side coil head 210 is displaced in the non-contact state in which the distance between the opening end surfaces 220 and 234 is maintained in the extending direction of the second fixed-side coil head 206. .

  On the other hand, the third fixed-side coil head 208 is configured by assembling the fixed-side coil member 238 to the fixed-side core member 236. The fixed-side core member 236 has a shape in which a pair of protruding wall portions 242 are protruded from a plate portion 240 having a rectangular plate shape, and a groove shape in which a groove portion 244 is formed between the protruding wall portions 242. Thus, it extends over a predetermined dimension with a constant cross-sectional shape. A moving-side coil member 238 formed by winding a lead wire a predetermined number of times is attached to the protruding tip surface of the protruding wall portion 242.

  The third fixed-side coil head 208 is attached to the base 202 so as to extend in the extending direction of the rail member 12 in a state where the protruding wall portion 242 protrudes outside the base 202. In particular, in the present embodiment, the third fixed-side coil head 208 is fixed to the base 202 via the gap member 222 in the same manner as the second fixed-side coil head 206 described above. Three fixed-side coil heads 208 are assembled to the rail member 12 via the base 202.

  On the other hand, the third moving-side coil head 212 is configured by assembling the moving-side coil member 248 to the moving-side core member 246 having a shorter length than the fixed-side core member 236 in the third fixed-side coil head 208. Has been. The moving-side core member 246 has a groove shape having an E-shaped cross-sectional shape in which an outer peripheral protrusion 254 is formed on both sides of the central protrusion 250 with a lead groove 252 therebetween. Then, the lead coil is wound around the central protrusion 250 a predetermined number of times to form the moving coil member 248 and assembled to the moving core member 246.

  The third moving coil head 212 has the moving core member 246 on the inner surface 232 of the support plate 230 fixed to the leg portion 40 of the slide member 14 in the same manner as the second moving coil head 210 described above. The protruding wall portion 254 is attached to the base 202 in a protruding state.

  As a result, the third fixed-side coil head 208 and the third moving-side coil head 212 are opposed to each other. In such a facing state, the central protrusion 250 of the moving-side core member 246 enters the groove 244 of the fixed-side core member 236 in a non-contact state with a gap. As the slide member 14 is displaced, the third moving-side coil head 212 is displaced in the non-contact state with a predetermined distance in the extending direction of the second fixed-side coil head 208. ing.

  The coil members 216, 226, 238, and 248 provided in the coil heads 206, 208, 210, and 212 are fixed to the fixed-side communication circuit 70 and the mobile-side communication circuit, respectively, as in the above-described embodiments. 72, the inverter 118, the rectification stabilization circuit 120, etc., between the second fixed coil head 206 and the second moving coil head 210, and the third fixed coil head 212 and the moving side. It is possible to transmit electric signals to and from the coil head 208 in a state where they are not in contact with each other. Thus, in this embodiment, in addition to the fixed coil head 34 and the moving coil head 60, the second fixed coil head 206, the second moving coil head 210, and the third fixed coil. The head 212 and the moving coil head 208 constitute an opposing interface.

  As is clear from this embodiment, the fixed-side coil head and the moving-side coil head do not necessarily have to be directly attached to the rail member or the slide member. Further, as is apparent from the fixed core member 236 in the third fixed coil head 212 and the movable core member 246 in the third movable coil head 208, the shapes of the core members opposed to each other are different from each other. May be.

  For example, as shown in FIG. 7, a second fixed-side coil member 260 is provided on the outer peripheral surface of the plate portion 240 of the fixed-side core member 236 in the third fixed-side coil head 208, and the third movement is performed. A second moving coil member 262 may be provided on the outer peripheral surface of the moving core member 246 in the side coil head 212. In this way, a plurality of transmission paths can be configured by using a common core member in substantially the same manner as the linear guide device 150 (see FIG. 5) in the fourth embodiment described above.

  As mentioned above, although several embodiment of this invention has been explained in full detail, these are illustrations to the last, Comprising: This invention is not limited at all by the specific description in this embodiment. .

  For example, the specific shapes of the fixed-side core member and the movable-side core member are not particularly limited, and various shapes such as those having a U-shaped cross section can be appropriately employed in addition to the shapes described above. It is.

  Further, the fixed side coil member and the moving side coil member do not necessarily have to be wound in contact with the fixed side core member and the moving side core member, and are wound around these core members with a gap therebetween. It may be equal. Further, the low magnetic permeability member is not always necessary.

  In each of the above embodiments, the fixed-side core member and the movable-side core member that are disposed at the opposing portions of the upper surface 20 of the rail member 12 and the lower surface 56 of the moving table 38 of the slide member 14 are the rail member and the slide member. However, these core members are not necessarily arranged in the embedded state. For example, in the first embodiment, the core members are fixed on the upper surface 20 of the rail member 12. The side coil head 34 may be disposed in the mounted state, or the moving side coil head 60 may be disposed in the mounted state on the lower surface 56 of the moving table 38 in the slide member 14.

  In addition, the fixed-side core member and the movable-side core member can be provided at a portion facing the rail member and the leg portion of the slide member. For example, in the first embodiment described above, the fixed-side coil head 34 and the moving-side coil head 60 are disposed on the facing portion of the side surface 16 of the rail member 12 and the inner surface 44 of the leg portion 40 of the slide member 14. May be.

  Further, when a plurality of slide members are attached to the rail member, the signal strength of transmission (magnetic field strength from the fixed core member) seems to be partially weak for some reason in the extending direction of the rail member. In such a case, the moving-side core can be compared with a slide member provided in a region where the signal strength is high so that transmission / reception of an electric signal can be clearly performed also in the slide member provided in the region. It is also possible to adjust the number of turns of the member and the moving-side coil member attached thereto by changing the number of turns.

  Furthermore, in the above-described embodiment, a slide member provided with a pair of linear guide mechanisms by circulating balls as support means has been exemplified. However, as the support means, in addition to a rolling bearing mechanism, a sliding bearing mechanism, a magnetic bearing mechanism, etc. Various known bearing mechanisms can be employed, and depending on the bearing mechanism employed, it is not always necessary to provide a pair on both sides in the width direction of the slide member. Various aspects such as surface support can be adopted. In particular, as a rolling bearing mechanism, instead of the illustrated linear guide mechanism, a cross roller guide mechanism using a cylindrical roller may be preferably employed.

  In addition, although not enumerated one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

Explanatory drawing for demonstrating the guide apparatus as 1st embodiment of this invention. Cross-sectional explanatory drawing for demonstrating the guide apparatus. Sectional explanatory drawing for demonstrating the guide apparatus as 2nd embodiment of this invention. Cross-sectional explanatory drawing for demonstrating the guide apparatus as 3rd embodiment of this invention. Sectional explanatory drawing for demonstrating the guide apparatus as 4th embodiment of this invention. Sectional explanatory drawing for demonstrating the guide apparatus as 5th embodiment of this invention. Cross-sectional explanatory drawing for demonstrating the different aspect of the opposing type interface of this invention.

Explanation of symbols

10: Linear guide device, 12: Rail member, 14: Slide member, 26: Fixed side core member, 28: Open end surface, 32: Fixed side coil member, 34: Fixed side coil head, 38: Moving table, 52: Moving Side core member, 54: Open end face, 58: Moving side coil member, 60: Moving side coil head, 66: Steel ball

Claims (5)

By supporting the slide member provided with the moving table with respect to the rail member extending over a predetermined dimension via the supporting means, the moving table of the slide member reciprocates substantially parallel to the extending direction of the rail member. In the guide device that can be displaced,
A fixed side coil head configured by combining a fixed side core member with a fixed side core member extending in the extending direction of the rail member is assembled to the rail side member, and has a shorter extension dimension than the fixed side core member. A moving side coil head formed by combining a moving side coil member with a moving side coil member is assembled to the slide side member, and an open surface of a magnetic path formed by each of the fixed side core member and the moving side core member be allowed to opposed positions to each other at a predetermined distance transmission and reception surface made is constituted opposed interface for transmission of electrical signals by utilizing the electromagnetic induction action by, and,
One of the fixed-side core member and the moving-side core member has an outer peripheral protrusion formed on both sides of the central protrusion, thereby opening one side between the central protrusion and the outer peripheral protrusion. An E-shaped axial cross section in which a lead groove is formed, and one coil member wound around the central protrusion is attached in the lead groove of the one core member. While either one of the fixed side coil head and the moving side coil head is configured,
The other core member of the fixed-side core member and the movable-side core member has a pair of protruding wall portions protruding from a plate portion having a rectangular plate shape, and a groove portion is formed between the protruding wall portions. The fixed-side coil head and the moving-side coil are formed by attaching the other coil member to each projecting front end surface of the pair of projecting wall portions of the other core member. The other coil head of the head is configured, and
The central projecting portion of the one core member enters the groove portion of the other core member in a non-contact state with a gap therebetween, and the protruding wall portions of the other core member are The opposed interface in which the stationary coil head and the movable coil head are opposed to each other is configured by entering the lead grooves formed on both sides of the central protrusion in a non-contact state with a gap therebetween. Guide device characterized by being made . One second coil member is provided on the outer peripheral surface of the one core member in the one coil head, and the other coil member is provided on the outer peripheral surface of the plate portion of the other core member in the other coil head. The guide device according to claim 1, wherein a plurality of transmission paths for transmitting the electric signal are configured by the fixed core member and the movable core member by providing a second coil member. The slide member has a gate shape having a pair of leg portions projecting on both sides in the width direction of the movable base, and each leg portion of the slide member is supported to the rail member via the support means. The guide device according to claim 1 or 2 , wherein: At least a pair of the opposed interfaces is provided, and a signal transmission path for transmitting a signal is configured by one of the opposed interfaces, and a power transmission path for transmitting power is configured by the other opposed interface. The guide device according to any one of claims 1 to 3 . A plurality of said slide member, with being mounted to one of the rail members relative to the plurality of slide members, one of claims 1 to 4, each same said movable coil heads are assembled A guide device according to claim 1.

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