JP2018076896A - Position adjusting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To displace a position adjusting mechanism in a smaller space.SOLUTION: A tip end of a rack shaft 13 is coupled to a coupling plate 9 with coupling portions 17A and 17B. Concerning an assembling order of the coupling portions 17A and 17B, while a nut member 31 is screwed with a male screw portion 13a of the rack shaft 13, the male screw portion 13a is inserted in through-holes 9a and 9b of the coupling plate 9. While the coupling members 29 and 29B are inserted in the through-holes 9a and 9b from the opposite side to the nut member 31 with the coupling plate 9 as boundary, female screw portions 29c and 29Bc of the coupling members 29 and 29B are screwed with the male screw portion 13a. Finally, the bolt 33 is screwed and fastened with the female screw portions 29c and 29Bc of the coupling members 29 and 29B.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a position adjusting mechanism that adjusts an axial position of a shaft member with respect to a movable member.

  A mechanism for adjusting the position of an insulator mounting plate that supports a train line with respect to a support column is known (see Patent Document 1). The first male screw portion of the adjustment bolt is screwed to the support column, and the second male screw portion of the adjustment bolt is screwed to the insulator mounting plate. A clamping nut is fastened to the distal end side of the second male screw portion of the adjustment bolt. To adjust the front / rear position of the insulator mounting plate relative to the support column, the adjustment bolt moves back and forth with respect to the support column by rotating the adjustment bolt with respect to the female screw of the support column with the clamping nut loosened. As a result, the lever mounting plate moves back and forth to adjust the position relative to the support column.

Japanese Utility Model Publication No. 6-887

  The position adjustment mechanism of Patent Document 1 requires a double nut having a locking function as a clamping nut on the outer side opposite to the support column of the lever mounting plate. For this reason, the outer side opposite to the support column of the lever mounting plate is required. Larger space is required in the area.

  Therefore, an object of the present invention is to enable the position adjustment mechanism to be arranged in a smaller space.

  In the present invention, the nut member positioned on the side where the tip of the shaft member of the movable member is inserted is screwed into the male screw portion of the shaft member, and is connected to the male screw portion of the shaft member inserted into the through hole of the movable member. The members are connected via an internal thread portion. The fastener is screwed onto the female thread portion of the connecting member from the flange portion side.

  According to the present invention, since only the flange portion of the connecting member and the head portion of the fastener are located on the opposite side of the shaft member with the movable member as a boundary, the position adjusting mechanism can be arranged in a smaller space. .

It is a top view of the whole position adjustment mechanism which concerns on the 1st Embodiment of this invention. FIG. 2 is a perspective view including a clamper whose rotation angle is adjusted by the position adjustment mechanism of FIG. 1. It is sectional drawing of the position adjustment mechanism which concerns on the 1st Embodiment of this invention. It is sectional drawing of the position adjustment mechanism which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the position adjustment mechanism which shows the modification of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of a position adjusting mechanism showing a first embodiment of the present invention. In FIG. 1, the left-right direction is the X direction, and the up-down direction is the Y direction. As shown in FIG. 1, a drive cylinder 3 as a drive unit is disposed on a rectangular base plate 1. The drive cylinder 3 fixes the cylinder body 5 to the base plate 1 and projects a piston rod 7 from the cylinder body 5 to the right in the X direction.

  A connecting plate 9 as a movable member is connected to the tip of the piston rod 7. The connecting plate 9 is formed long in the Y direction, and the tip of the piston rod 7 is connected to the longitudinal center of the connecting plate 9. The connecting plate 9 is moved by the drive cylinder 3 from a retracted position indicated by a solid line to an advanced position indicated by a two-dot chain line. The front end of the connecting plate 9 at the advanced position comes into contact with the pair of stoppers 11. The pair of stoppers 11 are fixed on the base plate 1.

  A rack shaft 13 as four shaft members is coupled to the coupling plate 9. Of these, the two rack shafts 13 are respectively connected to both sides of the drive cylinder 3 in the Y direction, and are connected from the left side of the connecting plate 9 in the X direction. The two rack shafts 13 respectively form rack gears 15 along the axial direction on the outer side (on the side opposite to the drive cylinder 3) near the end opposite to the connecting plate 9.

  The other two rack shafts 13 are connected from the right side in the X direction of the connecting plate 9 near the both ends in the longitudinal direction of the connecting plate 9 at positions away from the drive cylinder 3. The two rack shafts 13 respectively form rack gears 15 along the axial direction on the inner sides facing each other. The position adjusting mechanism of this embodiment is provided at four connecting portions 17 between the connecting plate 9 and the four rack shafts 13. The position adjustment mechanism will be described later.

  A gear 19 is meshed with each rack gear 15. In FIG. 1, the centers of the left two gears 19 are located on the same straight line extending in the Y direction. Similarly, the centers of the right two gears 19 in FIG. 1 are located on the same straight line extending in the Y direction. In FIG. 1, the centers of the upper two gears 19 are located on the same straight line extending in the X direction. Similarly, the centers of the lower two gears 19 in FIG. 1 are located on the same straight line extending in the X direction.

  By driving the drive cylinder 3, the connecting plate 9 moves forward and backward in the X direction, and the four rack shafts 13 also move forward and backward in the X direction together with the connecting plate 9. Each gear 19 is rotated by the forward and backward movement of the rack shaft 13. At this time, the left two gears 19 and the right two gears 19 in FIG.

  The rotation center shaft 20 of the gear 19 is directly or indirectly connected to a rotation shaft 23 of a clamper 21 as an operation unit shown in FIG. That is, when the gear 19 rotates, the clamper 21 rotates together with the rotating shaft 23. The rotating shaft 23 is provided so as to be rotatable with respect to the base portion 25.

  The four base portions 25 are attached to the four corner sides of the laminated table 27, respectively. A plurality of sheet members (not shown) are stacked on the lamination table 27. The sheet member is carried in by a laminating robot (not shown). One sheet member adsorbed by the hand of the laminating robot is carried onto the laminating table 27, and the four clampers 21 are lowered while holding the central portion of the sheet member with the hand, so that the four corners of the sheet member are viewed from above. Hold down.

  With the clamper 21 holding the sheet portion, the stacking robot moves the hand away from the stacking table 27 and loads the next sheet member to be loaded onto the previously loaded sheet member. At this time, in a state where the sheet member is pressed by the hand, the clamper 21 is rotated slightly after being raised so that the sheet member does not turn up. As a result, the clamper 21 is separated from the sheet member. Thereafter, the clamper 21 is returned by rotation so as to be above the stacked sheet members, and further lowered to press the stacked sheet members from above.

  Thereafter, by repeating the above operation, a plurality of sheet members are sequentially stacked on the stacking table 27. The clamper 21 is moved up and down by moving the entire base plate 1 shown in FIG. 1 up and down. Examples of the sheet member include an electrode sheet and a separator sheet in a thin lithium ion battery.

  Next, a position adjusting mechanism in the connecting portion 17 between the connecting plate 9 and the rack shaft 13 shown in FIG. 1 will be described. By adjusting the position, the rotational angle position of the clamper 21 shown in FIG. 2 is adjusted. FIG. 3 shows a first embodiment of the position adjustment mechanism. As shown in FIG. 1, the connecting portion 17 has four locations, one of which is a reference connecting portion 17A and the other three locations are connecting portions 17B having a floating function.

  The reference connecting portion 17 </ b> A forms a reference through hole 9 a in the connecting plate 9 so as to penetrate along the axial direction of the rack shaft 13. The reference through hole 9a has a constant inner diameter along the axial direction. A cylindrical tube portion 29a of the connecting member 29 is inserted and arranged in the reference through hole 9a. The connecting member 29 includes a flange portion 29b at one end of the cylindrical portion 29a. The cylindrical portion 29a is inserted almost entirely in the axial direction into the through hole 9a, and the outer surface is in contact with the inner surface of the through hole 9a. A female screw portion 29c is formed on the inner surface of the cylindrical portion 29a. The flange portion 29b is located outside the through hole 9a on the side opposite to the nut member 31 described later with the connecting plate 9 interposed therebetween. The flange portion 29b includes a tool engaging portion on the outer peripheral portion in order to rotate the connecting member 29 with a tool (not shown).

  A male screw portion 13a provided at the front end of the rack shaft 13 is screwed into a substantially half region on the left side of the female screw portion 29c of the cylindrical portion 29a in FIG. That is, the connecting member 29 is connected to the male screw portion 13a in the through hole 9a via the female screw portion 29c of the cylindrical portion 29a. The base side of the male screw portion 13a is exposed to the outside from the through hole 9a, and the nut member 31 described above is screwed into the exposed male screw portion 13a. In this state, the nut member 31 is positioned on the side where the tip of the rack shaft 13 of the connecting plate 9 is inserted. Accordingly, the flange portion 29b of the connecting member 29 is located on the side opposite to the side where the tip of the rack shaft 13 of the connecting plate 9 is inserted. A bolt 33 as a fastener is screwed and fastened to a substantially half region on the right side in FIG. 3 of the female thread portion 29c of the tube portion 29a. In the bolt 33, the male screw portion 33a is screwed into the female screw portion 29c of the cylindrical portion 29a, and the head portion 33b is located outside the through hole 9a.

  A concave portion 13 b is formed at the tip of the portion of the rack shaft 13 that includes the male screw portion 13 a, and a convex portion 33 c is formed at the tip of the bolt 33. The recess 13b includes a circular bottom surface 13b1 and an annular inner tapered surface 13b2 rising from the periphery of the bottom surface 13b1. The inner diameter of the inner tapered surface 13b2 is gradually increased from the bottom surface 13b1 toward the tip.

  The convex portion 33c of the bolt 33 includes a circular end surface 33c1 and an outer tapered surface 33c2 extending from the periphery of the end surface 33c1 toward the male screw portion 33a. The outer diameter of the outer tapered surface 33c2 gradually increases from the end surface 33c1 toward the male screw portion 33a. With the bolt 33 fastened, the convex portion 33c enters the concave portion 13b, and the outer tapered surface 33c2 of the convex portion 33c presses the inner tapered surface 13b2 of the concave portion 13b. At this time, the portions of the bolt 33 and the rack shaft 13 facing each other in the axial direction are separated from each other.

  Next, a method for assembling the connecting portion 17A will be described. First, the nut member 31 is screwed into the male screw portion 13 a of the rack shaft 13. At this time, the nut member 31 is screwed to the vicinity of the base portion of the male screw portion 13 a, and the male screw portion 13 a of the rack shaft 13 is protruded from the nut member 31. In this state, the male screw portion 13a of the rack shaft 13 is inserted into the through hole 9a with the centers thereof aligned, and the nut member 31 is brought into contact with the connecting plate 9. In a state where the nut member 31 is in contact with the connecting plate 9, the tip of the male screw portion 13a is located at the approximate center of the through hole 9a in the axial direction.

  Subsequently, the cylindrical portion 29a of the connecting member 29 is inserted into the through hole 9a from the opposite side of the nut member 31 with the connecting plate 9 in between, and the female screw portion 29c of the cylindrical portion 29a is changed to the male screw portion 13a of the rack shaft 13. Screw together. At this time, the flange portion 29b abuts on the connecting plate 9, and the tip of the cylindrical portion 29a is located substantially in the same plane as the end surface of the connecting plate 9 or slightly in the through hole 9a. Therefore, when the connecting member 29 is assembled, the connecting plate 9 is sandwiched between the flange portion 29b of the connecting member 29 and the nut member 31.

  Thereafter, the bolt 33 is screwed into the female screw portion 29c of the connecting member 29 and fastened to complete the assembly of the connecting portion 17A. In the state where the assembly of the connecting portion 17A is completed, the outer tapered surface 33c2 of the convex portion 33c of the bolt 33 presses the inner tapered surface 13b2 of the concave portion 13b of the rack shaft 13. As a result, the male threaded portion 13a of the rack shaft 13 presses the female threaded portion 29c of the connecting member 29, and the reaction force of the pressing force acts between the bolt 33 and the female threaded portion 29c of the connecting member 29, thereby ensuring more certainty. Demonstrate the function to prevent looseness.

  Next, a position adjustment method of the position adjustment mechanism in the connecting portion 17A will be described. First, after loosening the bolt 33 with respect to the connecting member 29, the connecting member 29 is loosened with respect to the rack shaft 13. The bolt 33 is separated from the rack shaft 13 by loosening. The connecting member 29 is separated from the nut member 31 by loosening, and at this time, the bolt 33 is also rotated integrally with the nut member 31 in the same direction. In this state, the nut member 31 is rotated with respect to the male screw portion 13a, whereby the axial position of the nut member 31 with respect to the rack shaft 13 is changed.

  In the state where the nut member 31 is brought into contact with the connecting plate 9 after the axial position of the nut member 31 with respect to the rack shaft 13 is changed, the rack shaft 13 is connected to the connecting plate 9 before the adjustment shown in FIG. The axial position with respect to 9 changes. That is, if the nut member 31 is moved to the tip end side (right side in FIG. 1) of the rack shaft 13, the adjusted rack shaft 13 is moved and adjusted to the left side in FIG. Conversely, if the nut member 31 is moved to the base side (left side in FIG. 1) of the rack shaft 13, the adjusted rack shaft 13 is moved and adjusted to the right side in FIG. After the movement adjustment, the position adjustment operation is completed by sequentially fastening the connecting member 29 and the bolt 33.

  Next, the connecting portion 17B will be described. The connecting portion 17B has a tapered shape in which the through hole 9b formed in the connecting plate 9 is tapered with respect to the connecting portion 17A, and the cylindrical portion 29Ba of the connecting member 29B is tapered to the tapered shape of the through hole 9b. The points are different. The rack shaft 13, the nut member 31, and the bolt 33 have the same shape with respect to the connecting portion 17 </ b> A except that the left and right positions in FIG. 1 are changed.

  The through-hole 9b has a tapered shape having an inner diameter that gradually increases from the side of the connecting plate 9 where the tip of the rack shaft 13 is inserted toward the side opposite to the side of the connecting plate 9 where the tip of the rack shaft 13 is inserted. It is. A nut member 31 is located on the side of the connecting plate 9 on the side where the tip of the rack shaft 13 is inserted. A flange portion 29Bb of the connecting member 29B is located on the side of the connecting plate 9 opposite to the side where the tip of the rack shaft 13 is inserted. The cylindrical portion 29Ba of the connecting member 29B has a tapered shape that changes so that the outer diameter gradually decreases from the flange portion 29Bb toward the nut member 31 so as to match the tapered shape of the through hole 9b.

  The cylindrical portion 29Ba of the connecting member 29B is inserted almost entirely in the axial direction into the through hole 9b, and in the state shown in FIG. 3, the outer surface substantially contacts the inner surface of the through hole 9b. The flange portion 29Bb of the connecting member 29B comes into contact with the connecting plate 9 from the side opposite to the nut member 31, and the tip of the cylindrical portion 29Ba is located on the same plane as the end surface of the connecting plate 9 or slightly in the through hole 9b. An internal thread portion 29Bc is formed on the inner surface of the cylindrical portion 29a.

  The assembling method of the connecting portion 17B is the same as the assembling method of the connecting portion 17A. That is, first, the male thread portion 13a of the rack shaft 13 with which the nut member 31 is screwed is inserted into the through hole 9b. Subsequently, the connecting member 29B is screwed into the male screw portion 13a while being inserted into the through hole 9b, and finally the bolt 33 is fastened.

  The position adjustment method of the position adjustment mechanism in the connecting portion 17B is the same as the position adjusting method of the connecting portion 17A. That is, the axial position of the nut member 31 with respect to the rack shaft 13 is changed in a state where the bolt 33 and the connecting member 29B are loosened in this order. Thereafter, the connecting member 29B and the bolt 33 are tightened in this order. At this time, the rack shaft 13 is in a state in which the position in the axial direction with respect to the connecting plate 9 is different from the initial position and is adjusted.

  By changing the axial position of the rack shaft 13 with respect to the connecting plate 9 as described above, the rotational angle position of the gear 19 that meshes with the rack gear 15 of the rack shaft 13 changes. Along with this, the rotational angle position of the clamper 21 of FIG. By adjusting the rotational angle position of the clamper 21, the pressing position of the clamper 21 with respect to the sheet member can always be made substantially constant.

  In the connection member 29B of the connection portion 17B, the flange portion 29Bb is in contact with the connection plate 9 in the state shown in FIG. 3, and the outer surface of the cylinder portion 29Ba is in close contact with the inner surface of the through hole 9b. In this case, the interval between the connecting portion 17A and the connecting portion 17B is fixed. On the other hand, in a position where the connecting member 29B is indicated by a two-dot chain line, that is, in a state where the flange portion 29Bb is separated from the connecting plate 9 by a distance S and a gap T is formed between the tubular portion 29Ba and the through hole 9b, Due to the gap T, the distance between the rack shaft 13 of the connecting portion 17A and the rack shaft 13 of the connecting portion 17B is not fixed, and some changes are possible.

  In order to form the gap T, a shim (not shown) is disposed in the space S between the flange portion 29Bb of the connecting member 29B and the connecting plate 9. By tightening the connecting member 29B with the shim disposed, a gap T is formed between the tube portion 29Ba and the through hole 9b. The size of the gap T can be changed by changing the thickness of the shim. By forming a gap T between the tube portion 29Ba and the through hole 9b, the rack shaft 13 of the connecting portion 17B is connected to the connecting plate 9 in a state having a floating mechanism. Thereby, the space | interval of the rack shaft 13 of the connection part 17A and the rack shaft 13 of the connection part 17B can be changed by the gap T. In this case, even if there is a dimensional error at the time of manufacture of each member, it is possible to suppress an excessive force from being applied to each fastening portion and the connecting portion, and the fastening state can be stabilized.

  In this embodiment, a connecting plate 9 that moves forward and backward by the drive cylinder 3, a rack shaft 13 that is connected to the connecting plate 9 and moves in the axial direction together with the connecting plate 9, and a connecting portion that connects the connecting plate 9 and the rack shaft 13. 17. The connecting portion 17 includes a through hole 9 a, a nut member 31, a male screw portion 13 a, a connecting member 29, and a bolt 33. The through hole 9 a is formed in the connecting plate 9 so as to penetrate in the axial direction of the rack shaft 13, and the tip of the rack shaft 13 is inserted therein. The male screw portion 13 a is formed at the tip of the rack shaft 13.

  The nut member 31 is screwed into the male screw portion 13a and is positioned on the side where the tip of the rack shaft 13 of the connecting plate 9 is inserted. The connecting member 29 is formed at an end portion of the cylindrical portion 29a by a female screw portion 29c formed inside the cylindrical portion 29a being screwed into the male screw portion 13a protruding from the nut member 31 in the through hole 9a. The flange portion 29b is located on the side opposite to the side where the tip of the rack shaft 13 of the connecting plate 9 is inserted. The bolt 33 is screwed into the female screw portion 29c of the connecting member 29 from the flange portion 29b side.

  In the position adjusting mechanism of the present embodiment configured as described above, the flange portion 29b of the connecting member 29 and the head portion 33b of the bolt 33 are located on the opposite side of the rack shaft 13 with the connecting plate 9 as a boundary. . In this case, the space on the side opposite to the rack shaft 13 with respect to the connecting plate 9 can be smaller than in the case where a double nut is used, and the position adjusting mechanism can be arranged in a smaller space.

  In this embodiment, the female screw portion 29 c of the connecting member 29 is screwed into the male screw portion 13 a of the rack shaft 13. Thereby, the connecting member 29 can be directly connected to the rack shaft 13, and the structure can be simplified as compared with the case where another member is provided between the connecting member 29 and the rack shaft 13.

  In the present embodiment, a plurality of rack shafts 13 are provided, a plurality of connecting portions 17 are provided corresponding to the plurality of rack shafts 13, and one connecting portion 17A among the plurality of connecting portions 17 has a through hole 9a as an axis. It has a constant inner diameter along the direction. The other connecting portion 17B among the plurality of connecting portions 17 has the through hole 9b from the side where the tip of the rack shaft 13 of the connecting plate 9 is inserted toward the side opposite to the side where the tip of the rack shaft 13 is inserted. The taper shape has an inner diameter that gradually increases. Corresponding to the tapered shape of the through hole 9b, the cylindrical portion 29Ba of the connecting member 29B has a tapered shape whose outer diameter gradually changes along the axial direction.

  The position adjusting mechanism of the present embodiment configured as described above has a clearance T in the connecting portion 17B in a state where the centers of the both are aligned between the tube portion 29Ba of the connecting member 29B and the through hole 9b of the connecting plate 9. Is formed. In this case, the gap between the rack shaft 13 of the connecting portion 17A and the rack shaft 13 of the connecting portion 17B can be changed by the gap T. Thereby, even if there is a dimensional error at the time of manufacture of each member, it is possible to suppress an excessive force from being applied to each fastening portion and the connecting portion, and it is possible to stabilize the fastening state.

  In the present embodiment, a convex portion 33c is provided at the tip of the bolt 33, a concave portion 13b into which the convex portion 33c enters is provided at the tip of the rack shaft 13, and the outer peripheral surface of the convex portion 33c is concave when the bolt 33 is fastened. The inner peripheral surface of 13b is pressed. In this case, the male threaded portion 13a of the rack shaft 13 presses the female threaded portion 29c of the connecting member 29, and the reaction force of the pressing force acts between the bolt 33 and the female threaded portion 29c of the connecting member 29, thereby ensuring more certainty. Demonstrate the function to prevent looseness. As a result, the connected state of the connecting portions 17A and 17B can be made stronger.

  In the present embodiment, the connecting plate 9 includes a rack gear 15 along the axial direction, meshes with the rack gear 15, includes a gear 19 that rotates when the rack gear 15 moves in the axial direction, and rotates by the rotation of the gear 19. A clamper 21 as a part is provided. In this case, the rotational angle position of the clamper 21 can be adjusted by adjusting the position adjusting mechanism of the connecting portions 17A and 17B. By adjusting the rotation angle position of the clamper 21, the pressing position of the clamper 21 with respect to the sheet member placed on the stacking table 27 shown in FIG.

  FIG. 4 shows a second embodiment that replaces the reference connecting portion 17A of FIG. 3 as a connecting portion 17C. A major difference between the connecting portion 17C and the connecting portion 17A is that the nut member 31C includes a nut cylinder portion 31Ca and a nut flange portion 31Cb. Other configurations are basically the same as those of the connecting portion 17A of FIG.

  The nut member 31C has a nut female screw portion 31Ca1 formed on the inner surface of the nut cylinder portion 31Ca, and a nut male screw portion 31Ca2 formed on the outer surface of the nut cylinder portion 31Ca. The nut female screw portion 31Ca1 is screwed into the male screw portion 13a, and the nut male screw portion 31Ca2 is screwed into the female screw portion 29c of the connecting member 29. That is, the connecting member 29 is connected to the male screw portion 13a in the through hole 9a via the female screw portion 29c of the cylindrical portion 29a. The assembling method of the connecting portion 17C is basically the same as that of the connecting portion 17A. That is, the female screw portion 31Ca1 of the nut cylinder portion 31Ca is screwed into the male screw portion 13a of the rack shaft 13. The nut cylinder portion 31Ca is screwed into the male screw portion 13a, and the tip thereof has substantially the same axial position as the tip of the male screw portion 13a.

  Next, the nut cylinder portion 31Ca screwed to the male screw portion 13a is inserted into the through hole 9a, and the female screw portion 29c of the connecting member 29 is inserted into the through hole 9a from the opposite side of the nut member 31C. It is screwed into the nut male threaded portion 31Ca2 of the nut cylinder portion 31Ca. At this time, the distal end of the nut cylinder portion 31Ca is located at the approximate center in the axial direction of the cylinder portion 29a of the connection member 29, and the connection plate is between the flange portion 29b of the connection member 29 and the nut flange portion 31Cb of the nut member 31C. 9 is pinched.

  After assembling the connecting member 29, the bolt 33 is fastened in the same manner as in FIG. At this time, the tip of the bolt 33 around the convex portion 33c and the tip of the nut cylinder portion 31Ca are separated from each other in the axial direction, and a gap is formed between them. As a result, similarly to FIG. 3, the outer tapered surface 33c2 of the convex portion 33c of the bolt 33 is pressed against the inner tapered surface 13b2 of the concave portion 13b of the rack shaft 13, thereby exhibiting a more reliable loosening prevention function.

  FIG. 5 shows a modified example of the connecting part 17C in FIG. 4 as a connecting part 17D. The major difference between the connecting portion 17D and the connecting portion 17C is that the shapes of the respective tips of the bolt 33D, the nut member 31D, and the rack shaft 13 are different. Other configurations are the same as those of the connecting portion 17C of FIG.

  The bolt 33D has a male screw portion 33Da and a head portion 33Db, and a recess 33Dc is formed at the tip opposite to the head portion 33Db. The recess 33Dc includes a bottom surface 33Dc1 and an inner tapered surface 33Dc2 rising from the periphery of the bottom surface 33Dc1. The inner diameter of the inner tapered surface 33Dc2 gradually increases from the bottom surface 33Dc1 toward the tip.

  The nut member 31D forms an annular convex portion 31Dc at the tip of the nut cylinder portion 31Da integrated with the nut flange portion 31Db. The convex portion 31Dc includes an outer tapered surface 31Dc1 on the outer peripheral surface. The outer diameter of the outer tapered surface 31Dc1 gradually decreases toward the tip of the nut cylinder portion 31Da. The convex portion 31Dc of the nut member 31D is inserted into the concave portion 33Dc of the bolt 33D, and the outer tapered surface 31Dc1 is pressed against the inner tapered surface 33Dc2 of the concave portion 33Dc.

  The assembling method is the same as in FIG. 4, and when the bolt 33D is finally fastened, the inner tapered surface 33Dc2 presses the outer tapered surface 31Dc1. At this time, portions of the bolt 33D, the nut cylinder portion 31Da, and the rack shaft 13 that are opposed to each other in the axial direction are separated from each other. As a result, the female thread part 31Da1 of the nut cylinder part 31Da presses the male thread part 13a of the rack shaft 13, and the reaction force of the pressing force acts between the bolt 33D and the female thread part 29c of the connecting member 29. Demonstrate reliable locking function.

  The position adjustment method by the position adjustment mechanism of the connecting portions 17C and 17D shown in FIGS. 4 and 5 is that the nut member 31 of FIG. 3 is replaced with the nut members 31C and 31D, and the position adjustment of the connecting portion 17A shown in FIG. This is almost the same as the position adjustment method by the mechanism. 4 and 5, the flange 29b of the connecting member 29 and the head 33Db of the bolt 33D are located on the opposite side of the rack shaft 13 with the connecting plate 9 as a boundary. Yes. In this case, the space on the side opposite to the rack shaft 13 with respect to the connecting plate 9 can be smaller than in the case where a double nut is used, and the position adjusting mechanism can be arranged in a smaller space.

  4 and 5, the nut members 31C and 31D have nut cylinder portions 31Ca and 31Da located in the through hole 9a and a nut flange portion 31Cb located on the side where the tip of the rack shaft 13 is inserted. , 31Db. Nut female threaded portions 31Ca1, 31Da1 formed inside the nut cylindrical portions 31Ca, 31Da are screwed into the male threaded portion 13a of the rack shaft 13, and the nut male threaded portion 31Ca2 formed outside the nut cylindrical portions 31Ca, 31Da. , 31Da2 are screwed into the female thread portion 29c of the connecting member 29.

  4 and 5 configured as described above, the nut female screw portions 31Ca1 and 31Da1 of the nut cylinder portions 31Ca and 31Da are screwed into the male screw portion 13a of the rack shaft 13. For this reason, the fastening strength between the nut members 31C and 31D and the rack shaft 13 can be further increased as compared with the embodiment of FIG.

  In the embodiment of FIG. 5, a recess 33Dc into which the tip of the nut cylinder portion 31Da of the nut member 31D enters is provided at the tip of the bolt 33D, and when the bolt 33D is fastened, the inner peripheral surface of the recess 33Dc is the nut cylinder portion 31Da. The outer peripheral surface of the tip is pressed. Thereby, the nut female screw portion 31Da1 of the nut cylinder portion 31Da presses the male screw portion 13a of the rack shaft 13, and the reaction force of the pressing force acts between the bolt 33D and the female screw portion 29c of the connecting member 29, A more reliable locking function can be exhibited.

  As mentioned above, although embodiment of this invention was described, these embodiment is only the illustration described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom. For example, in the above-described embodiment, four connection portions 17 are provided, but only one reference connection portion 17A may be provided. There may be at least one connecting portion 17B having a floating function with respect to the reference connecting portion 17A.

  The structure in which the nut members 31C and 31D of the respective embodiments of FIGS. 4 and 5 are provided with the nut cylinder portions 31Ca and 31Da has a floating shape with the through-hole 9a and the connection member 29 being tapered like the connection portion 17B of FIG. It can also be used as a mechanism.

  In the embodiment described above, tapered surfaces (FIGS. 3 and 4) provided at the tip of the bolt 33 and the tip of the rack shaft 13, respectively, or tapered surfaces provided at the tip of the bolt 33 and the tip of the nut member 31D (FIG. 3). In 5), the diameter changes linearly along the radial direction, but the diameter may change in a curved shape.

  In the above-described embodiment, the electrode sheet or separator sheet in the lithium ion battery has been described as an example of the sheet member pressed by the clamper 21. However, the sheet member is not limited to the electrode sheet or separator sheet, and may be any sheet-like member. . Further, the clamper 21 has been described as an example of the operation unit, but the clamper 21 is not limited as long as the rotation angle is adjusted.

3 Drive cylinder (drive unit)
9 Connection plate (movable member)
9a, 9b Connecting plate through hole 13 Rack shaft (shaft member)
13a Male shaft portion of rack shaft 13b Recessed portion of rack shaft 13b2 Inner tapered surface of recessed portion (inner peripheral surface of recessed portion)
15 rack 17 (17A, 17B, 17C, 17D) connecting part 19 gear 21 clamper (actuating part)
DESCRIPTION OF SYMBOLS 29 Connection member 29a Tube part of connection member 29b Flange part of connection member 29c Female thread part of connection member 31,31C, 31D Nut member 31Ca, 31Da Nut cylinder part of nut member 31Ca1,31Da1 Nut internal thread part of nut member 31Ca2,31Da2 Nut Nut male threaded portion 31Cb, 31Db Nut flange portion 31Dc1 Nut cylindrical portion outer taper surface (outer peripheral surface of nut cylindrical portion tip)
33,33D Bolt (fastener)
33c Convex part of bolt 33c2 Outer tapered surface of convex part (outer peripheral surface of convex part)
33Dc Bolt recess 33Dc2 Inner tapered surface of recess (inner peripheral surface of recess)

Claims (7)

A movable member that moves forward and backward by the drive unit;
A shaft member connected to the movable member and moving in the axial direction together with the movable member;
A connecting portion that connects the movable member and the shaft member;
The connecting portion is
A through hole formed in the movable member so as to penetrate in the axial direction of the shaft member and into which a tip of the shaft member is inserted;
A male thread formed at the tip of the shaft member;
A nut member which is screwed into the male screw portion and located on the side where the tip of the shaft member of the movable member is inserted;
A cylindrical portion and a flange portion provided at an end of the cylindrical portion, and connected to the male screw portion of the shaft member in the through hole via a female screw portion formed inside the cylindrical portion; A connecting member in which the flange portion is located on a side opposite to a side where the tip of the shaft member of the movable member is inserted;
A position adjusting mechanism comprising: a fastener that is screwed onto the female thread portion of the connecting member from the flange portion side.   The position adjusting mechanism according to claim 1, wherein the female screw portion of the coupling member is screwed into the male screw portion of the shaft member. The nut member has a nut cylinder portion located in the through hole, and a nut flange portion located on a side where a tip of the shaft member is inserted,
A nut female screw part formed inside the nut cylinder part is screwed into the male screw part of the shaft member,
The position adjusting mechanism according to claim 1, wherein a nut male screw portion formed outside the nut cylinder portion is screwed into the female screw portion of the connecting member. A plurality of the shaft members are provided, and a plurality of the connecting portions are provided corresponding to the plurality of the shaft members,
One of the plurality of connecting portions has a constant inner diameter along the axial direction of the through hole,
The other connecting portion of the plurality of connecting portions is configured such that the through hole gradually moves from the side of the movable member where the tip of the shaft member is inserted toward the side opposite to the side where the tip of the shaft member is inserted. The cylindrical portion of the connecting member has a tapered shape whose outer diameter gradually changes along the axial direction in correspondence with the tapered shape of the through hole. The position adjusting mechanism according to any one of claims 1 to 3.   A convex part is provided at the tip of the fastener, a concave part into which the convex part enters is provided at the tip of the shaft member, and when the fastener is fastened, the outer peripheral surface of the convex part is the inner peripheral surface of the concave part. The position adjusting mechanism according to claim 2, wherein the position adjusting mechanism is pressed.   A concave portion into which the tip of the nut tube portion of the nut member enters is provided at the tip of the fastener, and when the fastener is fastened, the inner peripheral surface of the recess is the outer peripheral surface of the tip of the nut tube portion. The position adjusting mechanism according to claim 3, wherein the position adjusting mechanism is pressed.   The shaft member is formed with a rack gear along the axial direction, and includes a gear that meshes with the rack gear and rotates by movement of the rack gear in the axial direction, and an operation unit that rotates by rotation of the gear. The position adjustment mechanism according to any one of claims 1 to 6.

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