JP2004324682A - Movable member holding jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To expand a gap between a pair of members by simple operation, and hold their positions. <P>SOLUTION: Pulleys 21 and 22 are energized in mutually approaching directions in a length direction of a case 23 by a tension adjusting mechanism in the case 23. The case 23 is held by case holding parts 31A and 31B in U-letter shape. Supports 39A and 39B are provided on tips of the case holding parts 31A and 31B to be respectively engaged with holes provided in flanges of the pulleys 21 and 22. L-shaped fixing parts 36A and 36B are respectively hooked on front and rear surfaces of the case 23. With female threads formed on the case holding parts 31A and 31B, operation screws 35A and 35B to which the fixing parts 36A and 36B are inserted are engaged. By rotating the operation screws, the case holding parts 31A and 31B are respectively moved toward the fixing parts 36A and 36B. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a movable member holding jig that biases a biased movable member against a biasing force and holds the position thereof. In particular, in a process of assembling an automobile engine, a movable member that is used when attaching an endless belt to a tension pulley, biases a relative position between a pair of biased pulleys against an urging force, and holds the relative position. Related to a holding jig.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a belt transmission system configured to synchronously rotate a crank pulley, a pulley of a generator, a pulley of an air conditioner, a tensioner, and the like by one endless belt in an automobile engine has been known. There is also proposed a device which is attached in a meandering manner between pulleys (for example, Patent Document 1). In the assembly process of an automobile engine, in order to attach an endless belt, for example, a pulley of a tensioner must be displaced against a spring force.
[0003]
[Patent Document 1]
JP 2001-59555 A
[Problems to be solved by the invention]
In a belt transmission system in which two pulleys, for example, a tension pulley and an idler pulley, are biased toward each other by a spring or the like, it is necessary to widen between the two pulleys in order to mount an endless belt. . However, when various devices are closely arranged around the belt transmission system, it is not easy to spread the pulleys.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a movable member holding jig that can bias a biased movable member against a biasing force by a simple operation and can maintain the position thereof. In particular, it is an object of the present invention to provide an opening jig which can expand a pair of movable members, such as a tension pulley and an idler pulley, which are mutually biased, by a simple operation, and can maintain the position thereof.
[0006]
[Means for Solving the Problems]
The movable member holding jig of the present invention supports the movable member and, with respect to an urging mechanism that urges the movable member in a predetermined direction, resists the relative position of the movable member to the urging mechanism against the urging force. A movable member holding jig that moves to a predetermined position and holds the movable member at a predetermined position, the engaging portion being engaged with the movable member and the relative position with respect to the movable member being fixed; A fixed portion whose position is fixed, and a moving mechanism for relatively displacing the distance between the engaging portion and the fixed portion, the movable member is moved by the relative displacement between the engaging portion and the fixed portion by the moving mechanism. It is characterized in that it is moved and held at a predetermined position against the urging force.
[0007]
The movable member includes a first movable member biased in a first direction and a second movable member biased in a second direction, and the engaging portion engages with the first movable member in a first engagement. And a second engaging portion that engages with the second movable member. The fixed portion includes a first fixed portion and a second fixed portion whose relative position with respect to the urging mechanism is fixed. A first moving mechanism that relatively displaces a distance between the joining portion and the first fixing portion; and a second moving mechanism that relatively displaces a distance between the second engaging portion and the second fixing portion. Due to the relative displacement between the first engagement portion and the first fixed portion by the first moving mechanism, the first movable member is moved and held at the first position against the urging force, and the second movable mechanism moves the first movable member to the first position. Due to the relative displacement between the second engaging portion and the second fixing portion, the second movable member is moved to and held at the second position against the urging force.
[0008]
For example, the first or second movable member is a tension pulley. Further, the first and second directions are substantially collinear and opposite directions, and at this time, the first and second directions are directed to directions in which the first movable member and the second movable member approach each other. I have. Further, it is preferable to provide a guide member for performing the movement of the first engagement portion and the second engagement portion along the straight line for more stable movement.
[0009]
The moving mechanism includes an operation screw that rotatably inserts the fixed portion and the engagement portion, one of the fixed portion and the engagement portion has a female screw that engages with a male screw of the operation screw, and the other has an operation screw. The screw is restricted in the axial direction, and the relative movement of the engagement portion with respect to the fixed portion is performed by rotation of the operation screw.
[0010]
Further, for example, the movable member is a pulley, and the engaging portion includes a column, and the column is fitted into a hole provided in a flange of the pulley. At this time, it is preferable that the engaging portion has two or more columns, and the flange is provided with two or more holes corresponding to these columns, and these holes are arranged symmetrically with respect to the rotation axis of the pulley. .
[0011]
The fixing portion contacts, for example, the housing of the urging mechanism, and is pressed by the housing by the reaction force of the urging force, so that the relative position with respect to the urging mechanism is fixed.
[0012]
Further, the movable member holding jig of the present invention supports the first and second movable members and biases the first and second movable members in a direction of approaching or separating from each other. A movable member holding jig for moving a relative position between the first and second movable members to a predetermined position against an urging force and holding the same at a predetermined position, wherein the jig engages with the first movable member. A first engagement portion fixed at a relative position with respect to the first movable member; a second engagement portion engaged with the second movable member and fixed at a relative position with respect to the second movable member; A moving mechanism for relatively displacing the distance between the joining portion and the second engaging portion, wherein the relative displacement between the first engaging portion and the second engaging portion by the moving mechanism causes the first and second members to move. The movable member is moved and held at a predetermined position against the urging force.
[0013]
The first and second movable members are pulleys, and the first and second engagement portions each include a pair of arc surfaces adapted to the shape of the outer peripheral surface of the pulley, and the pair of arc surfaces are connected to the rotation axis of the pulley. Preferably, it is symmetrical. At this time, it is preferable that the circular arc surface has a rubber coating.
[0014]
The moving mechanism includes, for example, a first rack having a fixed position relative to the first engagement portion, a pinion that meshes with the first rack, and a pinion operating portion for rotating the pinion. Is provided. At this time, the moving mechanism further has a second rack fixed in position relative to the second engaging portion and meshing with the pinion, and the first and second racks face each other across the pinion. Is preferred.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of a belt transmission system to which an endless belt (for example, a toothed belt) 10 is attached using an opening jig according to a first embodiment of the present invention.
[0016]
In this belt transmission system, the endless belt 10 is wound around a first pulley 11, a second pulley 12, and another pulley (not shown). A tension adjusting mechanism 20 is provided between the first and second pulleys 11 and 12, and a tension pulley 21 and an idler pulley 22 are provided on the tension adjusting mechanism 20 via a support shaft 25 and a support shaft 26, respectively. Supported. The tension adjusting mechanism 20 is housed in a housing 23 having a substantially cubic shape, and the housing 23 is fixed to, for example, an engine block (not shown).
[0017]
A slit 24 is formed substantially at the center of the top surface of the housing 23 along the longitudinal direction thereof, and the support shaft 25 of the tension pulley 21 and the support shaft 26 of the idler pulley 22 are substantially perpendicular to the top surface of the housing 23. Is arranged to pass through the slit 24. That is, the tension pulley 21 and the idler pulley 22 can be linearly displaced along the slit 24 by the tension adjusting mechanism 20. Further, the tension pulley 21 and the idler pulley 22 are rotatable around support shafts 25 and 26.
[0018]
The tension pulley 21 and the idler pulley 22 are engaged with the outer peripheral surface of the belt 10 and are urged by a spring (not shown) of the tension adjusting mechanism 20 in a direction approaching each other, that is, in parallel with the slit 24. Thereby, the tension of the belt 10 is adjusted to be within a certain range.
[0019]
Next, with reference to FIGS. 2 to 5, a configuration of an opening jig 30 which is a first embodiment of the movable member holding jig according to the present invention will be described. FIG. 2 is a perspective view of the opening jig 30 of the present embodiment, and FIGS. 3 to 5 are a top view, a side view, and a front view, respectively. 3 and 4, the outlines of the pulleys 21 and 22 (closest to each other) and the housing 23 mounted on the opening jig 30 are indicated by broken lines. FIG. 5 shows a state in which the housing 23 is mounted, but shows only a cross section (central cross section) inside the tension pulley 21.
[0020]
The opening jig 30 has a pair of U-shaped housing holding portions 31A and 31B. That is, the housing holding portions 31A and 31B are configured by a bottom portion forming the bottom surface of the U-shaped recess, and a pair of side portions extending from both ends of the bottom portion. The outer dimensions of the housing holders 31A and 31B are substantially equal, and the housing holders 31A and 31B are arranged substantially parallel so that the surfaces forming the U-shape face each other. As shown in FIGS. 3 to 5, the bottom and side portions forming the recessed portions of the housing holding portions 31A and 31B hold the housing 23 from the bottom surface and both side surfaces. That is, the dimensions of the recessed portions of the housing holding portions 31A and 31B substantially match the outer dimensions of the cross section of the housing 23 (a cross section orthogonal to the longitudinal direction).
[0021]
The housing holding portions 31A and 31B are connected to each other by a pair of guide bars 32, and their relative positions can be displaced along the guide bars 32. That is, the two guide rods 32 are fixed to, for example, two sides of the housing holding portion 31B, respectively, perpendicularly (along the longitudinal direction) to the surfaces forming the U-shape. Then, through holes 33 through which the guide rods 32 are slidably inserted are formed at corresponding positions on the side of the housing holding portion 31A. The guide rod 32 is fixed to the housing holding portion 31B by, for example, as shown in a partial cross-sectional view of FIG. 4, by attaching a screw formed at an end of the guide rod 32 to the side of the housing holding portion 31B. This is performed by screwing into a drilled screw hole.
[0022]
Approximately at the center of the bottom of the housing holders 31A and 31B, screw holes 34A and 34B are formed respectively parallel to the guide rod 32, and these screw holes 34A and 34B pass through the bottoms of the housing holders 31A and 31B, respectively. I do. Operation screws 35A and 35B are screwed into the screw holes 34A and 34B, respectively, from outside (opposite sides of the space between the housing holding portions 31A and 31B). The rod-shaped operation screws 35A and 35B are formed with screws only in substantially half thereof, and the operation screws 35A and 35B on the unthreaded side are respectively provided with through holes 36C and 36D of the fixing portions 36A and 36B. A hexagonal head (screw operation part) 37A, 37B operated by, for example, a hexagon wrench or the like is integrally provided at the tip of the rotatable insertion.
[0023]
The fixing portions 36A and 36B are, for example, blocks having an L-shaped cross section, and the inner corners of the L shape are arranged so as to contact the bottom surface of the housing 23 and the front and rear surfaces of the housing 23.
The through holes 36C and 36D are provided at the bottoms of the fixing portions 36A and 36B (of the L-shaped blocks, which are in contact with the bottom surface of the housing 23). The relative positions of the operation screws 35A and 35B with respect to the axial direction are as follows. They are fixed by bosses 38A, 38B provided integrally with the fixing portions 36A, 36B, respectively. That is, by rotating the head portions 37A, 37B, the housing holding portions 31A, 31B screwed with the operation screws 35A, 35B are relatively translated along the guide rod 32 with respect to the fixing portions 36A, 36B. Will be done.
[0024]
On the upper surface of the side portion of the housing holding portion 31A, two pillars 39A, one each, are provided in total. Similarly, on the upper surface of the side portion of the housing holding portion 31B, two posts 39B are provided, one each, in total. As shown in FIG. 5, when the housing 23 is mounted on the opening jig 30, the columns 39 </ b> A are fitted into holes 41 and 42 provided in the flange 40 of the tension pulley 21. The flange 40 has a disk shape centered on the axis Lc of the tension pulley 21, and the holes 41 and 42 are provided at positions symmetrical with respect to the axis Lc. A line connecting the holes 41 and 42 is orthogonal to the longitudinal direction of the housing 23.
[0025]
The flange 40 is formed integrally with the support shaft 25, and a boss 44 for screwing a bolt 43 is formed at the center of the flange 40, and the inner race of the ball bearing 45 is fixed to the boss 44 by the bolt 43. The tension pulley 21 is attached to the outer ring of the ball bearing 45. Thus, the tension pulley 21 is rotatably attached to the boss 44 of the flange 40. The idler pulley 22 has a similar structure, and the columns 39B are respectively fitted into two holes provided in the flange of the idler pulley.
[0026]
From the above structure, the housing 23 is mounted on the opening jig 30 and the heads 37A and 37B are rotated to reduce the distance between the housing holding portion 31A and the fixing portion 36A, and between the housing holding portion 31B and the fixing portion 36B. Then, the fixing portions 36 </ b> A and 36 </ b> B are pressed against the front and rear surfaces of the housing 23, and their positions are fixed to the housing 23. That is, the housing holders 31A and 31B are moved in translation toward the fixed units 36A and 36B, respectively. Thereby, the tension pulley 21 and the idler pulley 22 are moved against the urging force of the tension adjusting mechanism 20 by the columns 39A and 39B engaged with the flange. Then, when the housing holding units 31A and 31B are moved to predetermined positions with respect to the fixing units 36A and 36B, and the rotation operation of the head units 37A and 37B is completed, the tension pulley 21 and the idler pulley 22 are spaced at a predetermined interval. It is kept open.
[0027]
When the tension adjusting mechanism 20 is mounted on the engine block, the endless belt 10 is hung on the tension pulley 21 and the idler pulley 22, and the heads 37A and 37B are rotated in opposite directions, the housing holders 31A and 31B gradually become smaller. The tension is applied to the endless belt 10 by the tension pulley 21 and the idler pulley 22 away from the fixing parts 36A and 36B. When the forces between the endless belt 10 and the tensioner pulley 21 and the idler pulley 22 are substantially balanced, the opening jig 30 is removed from the tension adjusting mechanism 20 (housing 23).
[0028]
As described above, according to the opening jig of the first embodiment of the present invention, the space between the tension pulley and the idler pulley can be widened by a simple operation, and the position can be maintained. After the tension pulley and idler pulley have been attached to the engine block, etc., the opening jig can be removed with a simple operation. It becomes possible to perform it.
[0029]
In the first embodiment, an opening jig that opens between a pair of tension pulleys and an idler pulley against a biasing force has been described as an example. If the tensioner is provided with a tension pulley, it is possible to use only one side of the release jig 30 to bias the tension pulley against the urging force and hold it at that position. In other words, a single tension pulley can be biased and held by a configuration including only one left side including the housing holding portion 31A provided with the support 39A, the fixing portion 36A, and the operation screw 35A connecting the housing holding portion 31A and the fixing portion 36A.
[0030]
Next, a configuration of an opening jig 50 which is a second embodiment of the movable member holding jig according to the present invention will be described with reference to FIGS. FIG. 6 is a perspective view of the opening jig 50 of the second embodiment, and FIGS. 7 and 8 are a top view and a side view, respectively. 7 and 8, the outlines of the pulleys 21 and 22 (in an open state) and the housing 23 mounted on the opening jig 50 are indicated by broken lines.
[0031]
The opening jig 50 of the second embodiment also has a pair of housing holders 51A and 51B that are substantially U-shaped. That is, the housing holding portions 51A and 51B are composed of a bottom portion forming a bottom surface of a U-shaped depression, and a pair of side portions extending from both ends of the bottom portion. They are arranged substantially parallel so as to face each other. As shown in FIGS. 7 and 8, the bottom and side portions forming the recessed portions of the housing holding portions 51A and 51B hold the housing 23 from the bottom surface and both side surfaces as in the first embodiment. .
[0032]
In the second embodiment, the front ends of the side portions of the housing holding portions 51A and 51B extend to a position where they can be engaged with the tension pulley 21 and the idler pulley 22 when the housing 23 is mounted, and the outer side surface thereof is provided. Are located outside the outer peripheral surfaces of the tension pulley 21 and the idler pulley 22, respectively. Inside the front ends of the side portions of the housing holding portions 51A and 51B, the outer peripheral surfaces of the tension pulley 21 and the idler pulley 22 are sandwiched from both sides, respectively, and the relative positions of the tension pulley 21 and the housing holding portion 51A, Pulley engaging portions 52A and 52B for fixing the relative position of the housing holding portion 51B are formed. The pulley engaging portions 52A and 52B are formed as stepped portions, and the bottom surfaces thereof are formed flat so as to abut against the flanges of the pulleys 21 and 22, and the side surfaces thereof are formed as circular arc surfaces adapted to the outer peripheral surfaces of the pulleys 21 and 22. Is done. In addition, a rubber coating 53 is applied to each of the arc surfaces of the pulley engaging portions 52A and 52B to prevent the outer peripheral surfaces of the pulleys 21 and 22 from being damaged. In addition, a pair of circular arc surfaces provided on each of the housing holders 51A and 51B are formed symmetrically with respect to the central axes of the pulleys 21 and 22, respectively. From the pulley engaging portions 52A and 52B.
[0033]
Further, the housing holding portions 51A and 51B are slidably connected along the longitudinal direction of the housing 23 by two guide rods 32 as in the first embodiment. In FIGS. 6 to 8, the guide rod 32 is screwed to the housing holding portion 51A and communicates with the housing holding portion 51B, but which of the housing holding portions the guide rod 32 is screwed to. Is optional.
[0034]
In the first embodiment, the operation screws 35A and 35B are used to displace the relative position between the tension pulley 21 and the idler pulley 22, but in the second embodiment, the teeth 54R and 55R are respectively provided. The provided racks 54 and 55 are used. Two holes into which the racks 54 and 55 can be inserted are formed at the bottoms of the housing holders 51A and 51B. One end of the rack 54 is fitted into one hole provided at the bottom of the housing holding portion 51A, and is fixed to the bottom of the housing holding portion 51A by two bolts 56 from the bottom surface of the housing holding portion 51A. Is done. Further, the other end of the rack 54 is slidably inserted into one hole provided on the bottom of the housing holding portion 51B. On the other hand, one end of the rack 55 is fitted into the other hole provided at the bottom of the housing holding portion 51B, and the bottom of the housing holding portion 51B is secured by two bolts 56 from the bottom surface of the housing holding portion 51B. Fixed to. The other end of the rack 55 is slidably inserted into the other hole provided on the bottom of the housing holding portion 51A. The racks 54 and 55 are fixed in parallel to positions shifted by a predetermined distance from the centers of the housing holding portions 51A and 51B so as to extend along the longitudinal direction of the housing 23, and the teeth 54R formed on the racks 54 and 55, respectively. , 55R face each other.
[0035]
An operation block 57 is arranged between the housing holder 51A and the housing holder 51B. The operation block 57 is a substantially rectangular parallelepiped member having substantially the same width as the housing holders 51A and 51B and having substantially the same height as the thickness of the bottom of the housing holders 51A and 51B. It is arranged substantially parallel to 51B. Holes through which the racks 54 and 55 are inserted are provided on both sides of the operation block 57, and a pinion 58 that meshes with the teeth 54R and 55R of the racks 54 and 55 is disposed at the center. Below the pinion 58, a hexagonal head (pinion operating portion) 59 operated by, for example, a hexagon wrench is provided integrally, and projects from the bottom surface of the operation block 57. That is, when the head portion 59 is rotated by a wrench or the like, the racks 54 and 55 are moved in opposite directions along the longitudinal direction, respectively, due to the engagement between the teeth 54R and 55R and the pinion 58.
[0036]
From the above structure, when the housing 23 is mounted on the opening jig 50 and the head portion 59 is rotated to move the housing holding portions 51A and 51B away from each other, the tension pulley 21 and the idler pulley 22 respectively By being fitted to the outer periphery of the pulley and the pulley engaging portions 52A and 52B, the pulley is moved against the urging force of the tension adjusting mechanism 20. That is, when the head portion 59 is rotated until the housing holding portions 51A and 51B are separated by a predetermined distance, the tension pulley 21 and the idler pulley 22 are held in an open state at a predetermined interval. The operation block 57 is provided with a latch mechanism (not shown) for regulating clockwise rotation of the pinion 58 and the head 59 in FIG. 7 and maintaining a predetermined interval between the tension pulley 21 and the idler pulley 22. Z) is provided.
[0037]
Further, when the tension adjusting mechanism 20 is mounted on the engine block, the endless belt 10 is hung on the tension pulley 21 and the idler pulley 22, and then the head 59 is rotated in the opposite direction, the distance between the housing holders 51A and 51B is reduced. As the belt 10 gradually approaches, the tension is applied to the endless belt 10 by the tension pulley 21 and the idler pulley 22. When the forces between the endless belt 10 and the tensioner pulley 21 and the idler pulley 22 are substantially balanced, the opening jig 50 is removed from the tension adjusting mechanism 20 (the housing 23).
[0038]
As described above, the opening jig according to the second embodiment of the present invention can achieve the same effects as those of the first embodiment. Further, in the second embodiment, since it is not necessary to perform a process such as providing a hole in the flange of the pulley, it can be more easily applied to a conventional tension pulley.
[0039]
Although the teeth are provided on the two racks in the second embodiment, one of the racks may be replaced with a simple connecting rod, and the connecting rod may be fixed to the operation block.
[0040]
Further, the column of the first embodiment and the moving mechanism (rack and pinion) of the second embodiment may be combined, or the moving mechanism (operation screw) of the first embodiment and the moving mechanism of the second embodiment may be combined. You may combine with a pulley engagement part. Further, as the moving mechanism, various conventionally known mechanisms can be applied.
[0041]
Although the movable member holding jig of the second embodiment is an opening jig that opens between the tension pulley and the idler pulley urged to be close to each other, the jig is oppositely moved in a direction in which the pulley and the idler pulley are separated from each other. It is also possible to hold a pair of pulleys (a tension pulley and an idler pulley) that are biased in a direction approaching each other.
[0042]
【The invention's effect】
As described above, according to the present invention, the biased member can be biased against the biasing force by a simple operation, and its position can be maintained. In particular, the space between the pair of members such as the tension pulley and the idler pulley, which are mutually biased, can be widened by a simple operation, and the position can be maintained.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a belt transmission system to which an endless belt is attached using an opening jig according to an embodiment of the present invention.
FIG. 2 is a perspective view of the opening jig of the first embodiment to which the present invention is applied.
FIG. 3 is a top view of the opening jig shown in FIG. 2;
FIG. 4 is a side view of the opening jig shown in FIG. 2;
FIG. 5 is a front view of the opening jig shown in FIG. 2 and a partial cross-sectional view of a tension pulley.
FIG. 6 is a perspective view of an opening jig according to a second embodiment to which the present invention is applied.
FIG. 7 is a top view of the opening jig shown in FIG. 6;
FIG. 8 is a side view of the opening jig shown in FIG.
[Explanation of symbols]
Reference Signs List 20 tension adjusting mechanism 21 tension pulley 22 idler pulley 23 housing 30 opening jigs 31A, 31B housing holding portions 35A, 35B operating screws 36A, 36B fixing portions 39A, 39B support 50 opening jigs 51A, 51B housing holding portion 52A , 52B Pulley engaging section 54, 55 Rack 58 Pinion 59 Head section (Pinion operating section)

Claims (14)

For a biasing mechanism that supports the movable member and biases the movable member in a predetermined direction, a relative position of the movable member with respect to the biasing mechanism is adjusted to a predetermined position against the biasing force. A movable member holding jig for moving and holding at the predetermined position,
An engagement portion that engages with the movable member, and a relative position with respect to the movable member is fixed;
A fixed portion whose relative position to the urging mechanism is fixed,
A moving mechanism for relatively displacing the distance between the engaging portion and the fixed portion,
The movable member holding jig, wherein the movable member is moved and held at the predetermined position against the urging force by a relative displacement between the engaging portion and the fixed portion by the moving mechanism. Utensils. The movable member comprises a first movable member biased in a first direction and a second movable member biased in a second direction, and the engagement portion engages with the first movable member. A first engaging portion and a second engaging portion that engages with the second movable member, wherein the fixing portion includes a first fixing portion and a second fixing portion in which a relative position with respect to the urging mechanism is fixed. A first moving mechanism that relatively displaces a distance between the first engaging portion and the first fixed portion, and a distance between the second engaging portion and the second fixed portion; A second moving mechanism for displacing the first movable member by the first moving mechanism, by the relative displacement between the first engaging portion and the first fixed portion. And moved and held at one position, and by the relative displacement between the second engagement portion and the second fixed portion by the second movement mechanism. Movable member holding jig according to claim 1, wherein the second movable member is moved and held in the second position against the urging force. The movable member holding jig according to claim 2, wherein the first or second movable member is a tension pulley. The movable member holding jig according to claim 2, wherein the first and second directions are substantially co-linear and opposite. The movable member holding jig according to claim 4, wherein the first and second directions are oriented in a direction in which the first movable member and the second movable member approach each other. The moving mechanism includes an operation screw that rotatably inserts the fixed portion and the engagement portion, and one of the fixed portion and the engagement portion has a female screw that engages with a male screw of the operation screw. 2. The other according to claim 1, wherein the other is axially regulated with respect to the operation screw, and the relative movement of the engagement portion with respect to the fixed portion is performed by rotation of the operation screw. 3. A movable member holding jig. The movable member holding jig according to claim 1, wherein the movable member is a pulley. The movable member holding jig according to claim 7, wherein the engaging portion includes a column, and the column is fitted into a hole provided in a flange of the pulley. The said fixed part contacts the housing | casing of the said urging | biasing mechanism, The relative position with respect to the said urging | biasing mechanism is fixed by being pressed by the said housing | casing by the reaction force of the said urging | biasing force, The Claim 1 characterized by the above-mentioned. Movable member holding jig. A biasing mechanism that supports the first and second movable members and biases the first and second movable members in a direction of approaching or separating from each other is provided between the first and second movable members. A movable member holding jig for moving a relative position to a predetermined position against the urging force and holding the relative position at the predetermined position,
A first engagement portion that engages with the first movable member and has a fixed relative position with respect to the first movable member;
A second engagement portion that engages with the second movable member and fixes a relative position with respect to the second movable member;
A movement mechanism for relatively displacing the distance between the first engagement portion and the second engagement portion,
Due to the relative displacement between the first engagement portion and the second engagement portion by the movement mechanism, the first and second movable members are moved to and held at the predetermined position against the urging force. A movable member holding jig characterized by the above-mentioned. The movable member holding jig according to claim 10, wherein the first and second movable members are pulleys. The first and second engagement portions each include a pair of arc surfaces adapted to the shape of the outer peripheral surface of the pulley, and the pair of arc surfaces are symmetric with respect to the rotation axis of the pulley. The movable member holding jig according to claim 11. A first rack having a fixed position relative to the first engagement portion, a pinion meshing with the first rack, and a pinion operation for rotating the pinion; The movable member holding jig according to claim 10, further comprising a part. The moving mechanism further includes a second rack fixed in a relative position with respect to the second engagement portion and meshing with the pinion, wherein the first and second racks sandwich the pinion. The movable member holding jig according to claim 13, which faces each other.

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