JP2022167384A - Assembly jig - Google Patents

Abstract

To provide an assembly jig that satisfactorily inhibits the occurrence of erroneous assembly when a second member is inserted into an insertion hole of a first member and the second member is located on and fixed to the first member via a fastening tool.SOLUTION: An assembly jig includes: a holding member for holding a second member; a first moving member movable between an interference position where it interferes with fastening operation of a fastening tool and a non-interference position where it does not interfere with the fastening operation; and a second moving member that is supported by the holding member to be movable in an insertion and removal direction of the second member with respect to the first member. The second moving member restricts the movement of the first moving member from the interference position to the non-interference position. When the second member held by the holding member is inserted into an insertion hole, the second moving member comes into contact with the first member and separates from the second member and, in response to fitting of a first fitting portion of the first member and a second fitting portion of the second member, releases the restriction of the movement of the first moving member from the interference position to the non-interference position.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to an assembly jig used for inserting a second member into an insertion hole formed in a first member and fixing the second member to the first member via a fastener.

Conventionally, it includes a rotor (first member) fixed to the end of a camshaft of an internal combustion engine via a plurality of bolts, and an oil control valve (second member) for controlling hydraulic pressure acting on the rotor. A variable valve timing mechanism is known (see Patent Document 1, for example). In this variable valve timing mechanism, the outer wall of the oil control valve is formed with a protrusion projecting in a direction away from the valve center line. A housing hole is formed in the central portion of the rotor, and the housing hole includes a groove into which the projection of the rotor is inserted. As a result, the contact between the sidewalls of the protrusion and the groove positions the oil control valve with respect to the rotor around the valve centerline. Furthermore, the oil control valve is fixed to the rotor by pressing the oil control valve into the housing hole via the protrusion with the head of one bolt (fastener) for fixing the rotor to the camshaft. .

JP 2017-031899 A

In the above conventional variable valve timing mechanism, the protrusion of the oil control valve does not protrude from the entire outer wall of the valve in the direction in which the center line of the valve extends, but has a thin plate shape (flange shape) that protrudes from a portion of the outer wall of the valve. It is considered to be a protrusion of In this case, when the oil control valve is inserted into the accommodation hole of the rotor, the protrusion may contact the end face of the rotor without being fitted into the groove of the accommodation hole. If the bolt is screwed into the camshaft while the protrusion is in contact with the end face of the rotor, the oil control valve will not be positioned around the valve centerline and will not be properly fixed to the rotor.

Therefore, the present disclosure satisfactorily suppresses the occurrence of erroneous assembly when the second member is inserted into the insertion hole of the first member and the second member is positioned and fixed to the first member via a fastener. The main purpose is to provide an assembly jig that can

The assembly jig of the present disclosure inserts the second member into the insertion hole formed in the first member, and at the same time, inserts the first fitting portion formed in the first member and the second fitting portion formed in the second member. an assembly jig used to fix the second member to the first member via a fastener by fitting the mating portion so that the position of the second fitting portion is constant a holding member that holds the second member; a first moving member that can move between an obstructing position that interferes with the tightening operation of the fastener and a non-obstructing position that does not interfere with the tightening operation; supported by a member so as to be movable in the insertion/extraction direction of the second member with respect to the first member, restricting movement of the first moving member from the obstructing position to the non-obstructing position, and held by the holding member When the second member is inserted into the insertion hole, it abuts against the first member and separates from the second member, so that the first fitting portion and the second fitting portion are fitted together. and a second moving member for releasing restriction of movement of the first moving member from the obstructing position to the non-obstructing position accordingly.

When fixing the second member to the first member using the assembly jig of the present disclosure, the second member is held by the holding member so that the position of the second fitting portion of the second member is constant. At this time, the second moving member restricts the movement of the first moving member from the blocking position to the non-blocking position, and the first moving member is held at the blocking position that prevents the tightening operation of the fastener. . Next, the second member held by the holding member is inserted into the insertion hole of the first member so that the first fitting portion of the first member and the second fitting portion of the second member are fitted together. As the second member is inserted into the insertion hole of the first member, the second moving member comes into contact with the first member and moves away from the second member to form the first fitting portion and the second fitting portion. The restriction on the movement of the first moving member from the obstructing position to the non-obstructing position is released according to the fitting of the first moving member. As a result, the first moving member moves to the non-interfering position where the tightening operation of the fastener is not hindered, so that the tightening operation is performed to fix the second member to the first member by the fastener. becomes possible. That is, when the assembly jig of the present disclosure is used, the first fitting portion and the second fitting portion are not properly fitted together, and the second member is not positioned with respect to the first member. 2, the regulation of movement of the first moving member from the blocking position to the non-blocking position by the second moving member is not released, making it difficult to tighten the fastener. As a result, according to the assembly jig of the present disclosure, it is possible to substantially eliminate the fact that the tightening operation of the fastener is performed in a state where the second member is not positioned with respect to the first member. Therefore, it is possible to extremely well suppress the occurrence of erroneous assembly of the second member to the first member.

Further, the first moving member includes a bar supported by the holding member so as to be movable in a direction orthogonal to the inserting/removing direction of the second member, and an enlarged diameter portion formed on the bar. The second moving member may have an opening that allows the bar and the enlarged diameter portion to enter, and the enlarged diameter portion does not enter the opening. The first moving member may be held in the obstructing position while abutting a portion of the second moving member, and the diameter of the expanding member increases as the second moving member moves away from the second member. The movement of the first moving member to the non-interfering position may be released by entry of the portion into the opening. This makes it possible to move the first moving member from the obstructing position to the non-obstructing position at an appropriate timing in conjunction with the movement of the second moving member. In this case, the holding member may include a bottom plate that supports the second moving member, and the bottom plate restricts the entry of the enlarged-diameter portion of the first moving member so that only the bar is moved. may have an opening that allows entry of the

Further, the holding member includes a main body that partially supports the second member, and is rotated by the main body about an axis orthogonal to both the inserting/removing direction of the second member and the moving direction of the first moving member. A clamp member movably supported and a biasing member biasing the clamp member to press one end of the clamp member against the second member supported by the body may be included. In this case, the second member may be formed with a flat surface, and the one end of the clamp member may be formed with a flat support surface for supporting the flat surface of the second member. This makes it possible to firmly hold the second member by the holding member while keeping the position of the second fitting portion constant.

Further, the assembly jig includes the second fitting portion of the second member and the first fitting portion of the first member, which are engaged with a part of the first member and held by the holding member. It may have a positioning engaging portion that makes the and face each other. As a result, the first and second fitting portions can be reliably fitted together, so that it is possible to extremely favorably suppress the occurrence of erroneous assembly of the second member to the first member.

1 is a perspective view of an assembly jig of the present disclosure; FIG. FIG. 3 is a perspective view showing first and second members secured together using an assembly jig of the present disclosure; 1 is an enlarged perspective view of an assembly jig of the present disclosure; FIG. FIG. 4 is a partial cross-sectional view showing an assembly jig of the present disclosure; FIG. 4 is a partial cross-sectional view showing an assembly jig of the present disclosure;

Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

FIG. 1 is a perspective view showing an assembly jig 1 of the present disclosure. The assembly jig 1 shown in FIG. It is used to assemble and fix the oil control valve (second member) 102 that controls the hydraulic pressure supplied to the oil chamber.

The rotor 101 is fastened (fixed) to the end of a camshaft (not shown) of the internal combustion engine. As shown in FIG. 2, an insertion hole (through hole) 101o into which the oil control valve 102 is inserted is formed in the center of the rotor 101. As shown in FIG. Further, the rotor 101 has a plurality of (in this embodiment, for example, three) bolt holes arranged around the insertion hole 101o at intervals in the circumferential direction (equal intervals) so as to extend in the axial direction. 101h. A bolt B (see FIG. 1) is inserted through each bolt hole 101h as a fastener to be screwed onto the camshaft. In the end face of the rotor 101, a relatively shallow concave portion (first fitting portion ) 101r are formed.

The oil control valve 102 is an electromagnetic valve including a sleeve 102s, a spool (none of which is shown), a spring, an electromagnetic portion, and the like, and is connected to an oil pump and an oil reservoir of the vehicle. As shown in FIG. 2, the oil control valve 102 includes a thin-plate-like projecting portion (second fitting portion) 102p extending radially outward from the outer peripheral surface of the sleeve 102s, and a flat surface 102f. The projecting portion 102p is formed on the sleeve 102s so as to fit into the recessed portion 101r of the rotor 101 and be flush with the end surface of the rotor 101 (surrounding the bolt hole 101h). For example, one end of the sleeve 102s is partially cut so that the flat surface 102f is located on the opposite side of the projection 102p with respect to the axis of the sleeve 102s (oil control valve 102) when viewed from the axial direction of the sleeve 102s. Formed by lacking. The flat surface 102f is used for positioning the oil control valve 102 on the assembly jig 1. As shown in FIG.

3 is an enlarged perspective view showing the assembly jig 1, and FIG. 4 is a partial sectional view showing the assembly jig 1. As shown in FIG. As shown in these drawings, the assembly jig 1 includes a holding member 2 that holds an oil control valve 102 to be fixed to a rotor 101, and first moving members (blocks) that are movably supported by the holding members 2, respectively. pin) 3 and a second moving member 4 . The holding member 2 also includes a main body 20 , an end plate 21 , a bottom plate 22 , and a clamp member 23 rotatably supported by the main body 20 .

The main body 20 of the holding member 2 has a valve support portion 20a into which the end portion of the oil control valve 102 (sleeve 102s) is axially inserted. As shown in FIGS. 3 and 4, the valve support portion 20a is formed at one end (the left end in FIG. 4) of the main body 20 so as to extend in the x-axis direction in FIGS. The upper and lower sides of the figure are open. That is, the oil control valve 102 (sleeve 102s) is partially supported from both sides by a pair of inner peripheral surfaces (concave curved surfaces) of the main body 20 forming the valve support portion 20a.

Furthermore, the main body 20 of the holding member 2 includes a support hole 20h, a tool escape portion 20r, and two positioning pins (positioning engagement portions) 20p. The support hole 20h extends in a direction (z-axis direction in FIGS. 3 and 4) perpendicular to the axial direction (x-axis direction in FIGS. 3 and 4) of the oil control valve 102 (sleeve 102s) inserted in the valve support portion 20a. passes through the main body 20 at the . The tool relief portion 20r is a recess recessed from the surface of the main body 20 (upper surface in FIGS. 3 and 4) on the opposite side of the main body 20 from the valve support portion 20a. The two positioning pins 20p extend from one end of the main body 20 in the x-axis direction in FIG. protrude to

Also, the end plate 21 of the holding member 2 is fixed to the end portion of the body 20 opposite to the valve support portion 20a via a plurality of bolts. The end plate 21 is formed with a recess that continues to the tool relief portion 20r of the main body 20 (see FIGS. 1 and 4). Further, the bottom plate 22 of the holding member 2 is connected to the main body 20 from the lower side in FIGS. Fixed at 20.

A clamping member 23 is arranged between the main body 20 and the bottom plate 22 so as to extend in the x-axis direction in FIGS. A rotary shaft 24 is fixed near the central portion of the clamp member 23 in the longitudinal direction. The rotating shaft 24 extends in a direction perpendicular to both the axial direction of the oil control valve 102 inserted into the valve support portion 20a and the extending direction of the support hole 20h (the y-axis direction in FIGS. 3 and 4). It is rotatably supported by the main body 20 of the holding member 2 as shown. Further, a flat support surface 23f is formed on the end (one end) of the clamp member 23 on the valve support portion 20a side so as to be positioned on the valve support portion 20a (main body 20) side.

As shown in FIG. 4, between the end (the other end) of the clamp member 23 opposite to the valve support portion 20a (support surface 23f) and the main body 20, a coil spring (elastic body) as an urging member is provided. ) 25 are placed in a compressed state. As a result, the clamp member 23 is urged around the rotation shaft 24 clockwise in FIG. A rotation restricting pin 26 is fixed to the clamp member 23 so as to extend in the z-axis direction in the figure. The tip of the rotation restricting pin 26 (upper end in FIG. 4) abuts against the inner surface of the main body 20 (lower surface in FIG. 4), whereby the clamp member 23 biased by the coil spring 25 is attached to the valve support portion 20a. In the mounted state in which the oil control valve 102 is not inserted, the support surface 23f is held in a posture rotated slightly clockwise with respect to the xy plane in FIGS.

As shown in FIGS. 3 and 4, the first moving member 3 includes a bar 3b slidably inserted through a support hole 20h of the main body 20 via a bush or the like, and an expansion rod 3b having a larger diameter than the support hole 20h. diameter portion 3e. The first moving member 3 moves in a direction perpendicular to the axial direction (the z-axis direction in FIGS. 3 and 4) of the oil control valve 102 (sleeve 102s) inserted into the valve support portion 20a by the main body 20 (holding member 2). movably supported. A portion of the bar 3b that is not inserted through the support hole 20h (a portion below the support hole 20h in FIG. 3) and the enlarged diameter portion 3e are inserted through a through hole 23h formed in the clamp member 23. be.

The second moving member 4 is arranged between the bottom plate 22 of the holding member 2 and the clamping member 23 . The second moving member 4 is connected to the bottom plate 22 via a linear guide, a plunger, etc., and supported by the bottom plate 22 so as to be slidable in the x-axis direction in FIGS. Thereby, the second moving member 4 is supported by the holding member 2 so as to be movable in the axial direction of the oil control valve 102 inserted into the valve support portion 20a. Further, the second moving member 4 is formed with an opening 4o so as to overlap with the support hole 20h of the main body 20 and the through hole 23h of the clamp member 23 when viewed from the z-axis direction. The opening 4o is formed in the second moving member 4 so as to allow both the bar 3b and the enlarged diameter portion 3e of the first moving member 3 to enter. Further, the bottom plate 22 of the holding member 2 that supports the second moving member 4 is also arranged so as to overlap the support hole 20h of the main body 20, the through hole 23h of the clamping member 23, and the opening 4o of the second moving member 4 when viewed from the z-axis direction. is formed with an opening 22o. The opening 22o is formed in the bottom plate 22 so as to restrict entry of the enlarged diameter portion 3e of the first moving member 3 and allow entry of only the bar 3b.

Next, a procedure for fixing the oil control valve 102 to the rotor 101 using the assembly jig 1 configured as described above will be described.

When assembling the oil control valve 102 to the rotor 101, the second moving member 4 of the assembling jig 1 is moved toward the valve support portion 20a of the main body 20 so as to be separated from the end plate 21, and the second moving member 4 4 (the left end in FIG. 4) protrudes slightly outward from the end face of the main body 20 on the side of the valve support portion 20a, as shown in FIG. Further, at this time, the enlarged diameter portion 3e of the first moving member 3 does not enter the opening 4o of the second moving member 4, and the surface of the second moving member 4 on the side of the clamping member 23 (upper surface in FIG. 4). part of the Thereby, as shown in FIG. 4, the bar 3b of the first moving member 3 protrudes upward in the drawing from the support hole 20h. In this embodiment, a jig storage place is prepared for placing the first and second moving members 3 and 4 of the assembly jig 1 in the state shown in FIG. Then, when the assembly jig 1 is set in the jig storage place by the operator, the first and second moving members 3 and 4 are pressed by the protrusions or the like provided in the jig storage space as shown in FIG. A state is formed.

Next, the operator sets the oil control valve 102 to the assembly jig 1 . That is, the sleeve 102 s of the oil control valve 102 is inserted into the valve support portion 20 a of the main body 20 so that the flat surface 102 f contacts the support surface 23 f of the clamp member 23 . The sleeve 102s is pressed against a pair of inner peripheral surfaces of the main body 20 forming the valve support portion 20a by a clamp member 23 (support surface 23f) biased by a coil spring 25. It protrudes upward in FIG. 4 from the portion 20a. As a result, the oil control valve 102 is firmly held by the holding member 2, and the position of the projecting portion 102p around the axis of the sleeve 102s is kept constant.

Further, when the oil control valve 102 is held by the holding member 2, the protruding portion 102p of the sleeve 102s is, as shown in FIG. See and overlap. Therefore, in this state, if the bolt B or the tightening tool 50 as a tightening tool is to be brought close to the oil control valve 102, the tightening tool 50 or the like protrudes from the main body 20. , and the tightening operation of the bolt B is hindered by the first moving member 3 . Hereinafter, the position of the first moving member 3 shown in FIG. 4 will be referred to as the "blocking position" of the first moving member 3.

After the oil control valve 102 is held by the assembly jig 1, the operator grips the assembly jig 1 and inserts the oil control valve 102 (sleeve 102s) held by the holding member 2 into the insertion hole 101o of the rotor 101. While inserting, the two positioning pins 20p of the main body 20 are inserted into the corresponding bolt holes 101h of the rotor 101. As shown in FIG. As a result, the protrusion 102p of the oil control valve 102 (sleeve 102s) held by the holding member 2 faces (directly faces) the recess 101r of the rotor 101. As shown in FIG. Further, when the operator inserts the oil control valve 102 (sleeve 102s) into the insertion hole 101o, as shown in FIG. By being pressed by the rotor 101 , the member 4 is separated from the oil control valve 102 along the insertion/removal direction (x-axis direction) of the oil control valve 102 with respect to the rotor 101 .

As shown in FIG. 5, when the projection 102p of the oil control valve 102 (sleeve 102s) held by the holding member 2 is fitted into the recess 101r of the rotor 101, the clamping member of the second moving member 4 continues until then. The expanded diameter portion 3e of the first moving member 3 that has been in contact with the surface on the side of 23 enters (drops) into the opening 4o of the second moving member 4. As shown in FIG. As a result, the first moving member 3 moves from the main body 20 side to the bottom plate 22 side until the expanded diameter portion 3e hits the surface of the bottom plate 22 on the side of the second moving member 4, and the bar 3b projecting from the main body 20 is As shown in FIG. 5, it completely enters the support hole 20h. Hereinafter, the position of the first moving member 3 shown in FIG. 5 is referred to as the "non-interfering position" of the first moving member 3.

When the first moving member 3 moves from the interfering position to the non-interfering position, even if the bolt B or the tightening tool 50 as a tightening tool is brought close to the oil control valve 102, the tightening tool 50 and the like and the first moving member 3 does not interfere with the bar 3b. Therefore, as shown in FIG. 5, using a tightening tool 50, the bolt B can be inserted through the bolt hole 101h adjacent to the recess 101r of the rotor 101 and screwed onto the camshaft (not shown). As a result, the head of the bolt B presses the projecting portion 102p of the sleeve 102s against the bottom surface of the recess 101r so that the oil control valve 102 can be positioned and fixed to the rotor 101 with high accuracy. After screwing the bolt B onto the camshaft, the operator separates the assembly jig 1 from the rotor 101 and sets the assembly jig 1 in the jig storage area. As a result, the first moving member 3 moves to the blocking position in accordance with the movement of the second moving member 4, and the installation of the oil control valve 102 to the next rotor 101 can be executed.

As described above, the assembly jig 1 includes the holding member 2 that holds the oil control valve (second member) 102 so that the position of the projecting portion 102p as the second fitting portion is constant, and the Oil control for the rotor (first member) 101 by the first moving member 3 and the holding member 2, which is movable between a blocking position that hinders the tightening work of the bolt B and a non-hindering position that does not hamper the tightening work. and a second moving member 4 that is movably supported in the insertion/removal direction (x-axis direction) of the valve 102 . When the oil control valve 102 is held by the holding member 2, the second moving member 4 restricts the entry of the enlarged diameter portion 3e into the opening 4o, thereby moving the first moving member 3 from the obstructing position to the non-removable position. Restrict movement to obstruction position. Further, the second moving member 4 contacts the rotor 101 and separates from the oil control valve 102 when the oil control valve 102 held by the holding member 2 is inserted into the insertion hole 101o of the rotor 101 . Further, the second moving member 4 opens the enlarged diameter portion 3e of the first moving member 3 to the opening 4o according to the engagement between the concave portion (first fitting portion) 101r of the rotor 101 and the projecting portion 102p of the sleeve 102s. Then, the movement of the first moving member 3 from the blocking position to the non-blocking position is released. As a result, the first moving member 3 moves to the non-interfering position where the bolt B tightening operation is not hindered. It becomes possible.

That is, when the assembly jig 1 is used, the concave portion 101r and the projecting portion 102p are not properly fitted, and the oil control valve 102 is not positioned around the axis of the sleeve 102s with respect to the rotor 101. In this case, the movement of the first moving member 3 from the interfering position to the non-obstructing position by the second moving member 4 is not released due to the insufficient amount of movement of the second moving member 4 in the insertion/removal direction, and the bolt Execution of the tightening work of B becomes difficult. As a result, according to the assembly jig 1, it is possible to substantially eliminate the tightening operation of the bolt B when the oil control valve 102 is not positioned with respect to the rotor 101. It is possible to suppress the occurrence of improper assembly of the oil control valve 102 to the oil control valve 101 very well.

Further, the first moving member 3 includes a rod 3b supported by the holding member 2 so as to be movable in a direction (z-axis direction) perpendicular to the insertion/removal direction of the oil control valve 102; and part 3e. The second moving member 4 also has an opening 4o that allows the rod 3b and the enlarged diameter portion 3e to enter. Furthermore, when the expanded diameter portion 3e is in contact with a portion of the second moving member 4 without entering the opening 4o, the first moving member 3 is held in the obstructing position, and the second moving member 4 moves in the insertion/removal direction. As the enlarged-diameter portion 3e moves into the opening 4o as it moves away from the oil control valve 102, the restriction on the movement of the first moving member 3 to the non-interfering position is released. As a result, it is possible to move the first moving member 3 from the blocking position to the non-blocking position at an appropriate timing in conjunction with the movement of the second moving member 4 .

Further, the holding member 2 includes a bottom plate 22 that supports the second moving member 4. The bottom plate 22 restricts the entry of the enlarged diameter portion 3e of the first moving member 3 and allows the entry of only the bar 3b. An opening 22o is formed. As a result, the first moving member 3 that has moved from the blocking position to the non-blocking position can be supported by the holding member 2 without falling off.

Further, the holding member 2 includes a main body 20 that partially supports the oil control valve 102 and a rotary shaft 24 that is orthogonal to both the insertion/removal direction of the oil control valve 102 and the movement direction of the first moving member 3 by the main body 20. a clamping member 23 rotatably supported around; and a coil spring (biasing member) 25 biasing the clamping member 23 so as to press one end of the clamping member 23 against the oil control valve 102 supported by the main body 20. including. In addition, one end of the clamp member 23 is formed with a flat support surface 23f that supports the flat surface 102f of the oil control valve 102. As shown in FIG. As a result, the oil control valve 102 is pressed against the main body 20 (valve support portion 20a) by the clamp member 23 (support surface 23f), and the position of the projecting portion 102p as the second fitting portion is kept constant. 102 can be held firmly by the holding member 2 .

Also, the assembly jig 1 includes two pieces that are inserted (engaged) in the bolt hole 101h of the rotor 101 and held by the holding member 2, and the projecting portion 102p of the oil control valve 102 and the recessed portion 101r of the rotor 101 face each other. positioning pin 20p. As a result, when the oil control valve 102 is assembled to the rotor 101, the concave portion 101r and the protruding portion 102p can be reliably fitted together, so that the occurrence of incorrect assembly can be extremely well suppressed. However, depending on the position of the bolt hole 101h in the rotor 101, the positioning pin 20p may be omitted from the assembly jig 1 (holding member 2).

Furthermore, the application of the assembly jig 1 is not limited to the rotor 101 and the oil control valve 102 . That is, the assembly jig 1 can be applied to any two members as long as the first member has an insertion hole and the second member is inserted into the insertion hole and fixed to the first member via a fastener. It is possible.

It goes without saying that the invention of the present disclosure is not limited to the above-described embodiments, and various modifications can be made within the scope of the present disclosure. Furthermore, the above-described embodiment is merely one specific form of the invention described in the Summary of the Invention column, and does not limit the elements of the invention described in the Summary of the Invention column.

INDUSTRIAL APPLICABILITY The invention of the present disclosure can be used in the field of manufacturing products including a first member having an insertion hole and a second member inserted into the insertion hole and fixed to the first member.

1 assembly jig 2 holding member 20r tool escape portion 21 end plate 22 bottom plate 22o opening 23 clamping member 23h through hole 23f support surface 24 rotating shaft 25 coil spring 26 rotation restricting pin 3 first moving member 3b bar 3e enlarged diameter portion 4 second moving member 4o opening 20 main body 20a valve support portion 20h support hole 20p positioning pin 50 tightening tool 101 rotor (first member), 101h bolt hole, 101o insertion hole, 101r concave portion, 102 oil control valve (second member), 102f flat surface, 102p protrusion, 102s sleeve, B bolt.

Claims (1)

The second member is inserted into the insertion hole formed in the first member, and the first fitting portion formed in the first member and the second fitting portion formed in the second member are fitted and tightened. An assembly jig used to fix the second member to the first member via an attachment,
a holding member that holds the second member so that the position of the second fitting portion is constant;
a first moving member movable between an obstructing position that interferes with the tightening operation of the fastener and a non-obstructing position that does not interfere with the tightening operation;
It is supported by the holding member so as to be movable in the insertion/extraction direction of the second member with respect to the first member, restricts the movement of the first moving member from the obstructing position to the non-obstructing position, and is held by the holding member. When the second member is inserted into the insertion hole, the second member abuts against the first member and is separated from the second member, and the first fitting portion and the second fitting portion are fitted to each other. a second moving member that releases restriction on movement of the first moving member from the obstructing position to the non-obstructing position in response to;
An assembly jig comprising a

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