JPH0441314Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a defective assembly detection device for detecting defective assembly of a clutch hub sleeve unit or the like used in a gear type transmission.

[Conventional technology]

2. Description of the Related Art Conventionally, clutch hub sleeve units for gear type transmissions, such as those shown in FIGS. 9 and 10, have been known. That is, this clutch hub sleeve unit 9
1, a sleeve 92 spline-coupled to the outer periphery of the clutch hub 91, a pair of springs 93 and 94 fitted into both sides of the clutch hub 91 in the thrust direction, and a key 95. The key 95 has a pair of springs 93 and 94.
The keyway 9 is supported by the clutch hub 91 while being pressed against the inner circumferential surface of the sleeve 92 by the keyway 9 formed in the inner circumferential surface of the sleeve 92.
2a, and by moving the sleeve 92 in the thrust direction from the state shown in the figure, the keyway 92a
It is starting to be removed from the list. This clutch hub sleeve unit 9 is assembled into a gear type transmission with the above-mentioned configuration, the clutch hub 91 is fixed to the rotating shaft thereof, the operating lever is connected to the sleeve 92, and the operating lever is operated. If 92 is moved a predetermined amount in the thrust direction,
The sleeve 92 meshes with the teeth of the driven gear to integrally connect the driven gear and the rotating shaft.

[Problems to be Solved by the Invention] Conventionally, the clutch hub sleeve unit 9 has been assembled manually. As a result, assembly errors often occur, such as assembling the springs 93, 94 and the key 95 in the wrong state, or forgetting to assemble the springs 93, 94. If the clutch hub sleeve unit 9, which has been assembled incorrectly in this way, is used in a gear type transmission, the spring 9 will be damaged during use.
3, 94 and the key 95 may come off from the clutch hub 91, causing the clutch hub sleeve unit 9 to malfunction and even causing a failure of the gear type transmission.

Therefore, in order to prevent this, after the clutch hub sleeve unit 9 was assembled, it was inspected to see if it was properly assembled.However, in the past, this inspection was done visually, so inspections were overlooked. There was a problem that occurred.

In view of the above circumstances, it is an object of the present invention to provide a defective assembly detection device that can reliably detect defective assembly of a clutch hub sleeve unit, etc.

[Means to solve the problem]

The assembly defect detection device according to the present invention includes a clutch hub, a sleeve coupled to the outer periphery of the clutch hub so as to be movable in the thrust direction, a pair of springs respectively fitted into both sides of the clutch hub in the thrust direction, and a pair of springs fitted to both sides of the clutch hub in the thrust direction. a key supported by the clutch hub while being pressed against the inner circumferential surface of the sleeve by a spring, and engaged in a keyway formed in the inner circumferential surface of the sleeve; a workpiece configured to be engaged with and disengaged from the keyway by moving the sleeve in a thrust direction;
An assembly defect detection device for detecting an assembly defect,
a driving means for moving the clutch hub relative to the sleeve in a thrust direction; and at least one of the key and the spring when the clutch hub is moved relative to the sleeve by the driving means. and detecting means for detecting that the clutch has come off from the clutch hub.

[Effect]

According to the above configuration, if the workpiece is not assembled properly, at least one of the key and the spring will come off from the clutch hub when the clutch hub is moved relative to the sleeve in the thrust direction. This is detected by the detection means, and it is determined that the workpiece is assembled incorrectly.

〔Example〕

1 to 6 show an embodiment of the assembly defect detection device according to the present invention. This assembly defect detection device includes a base 50 and a support plate 51 vertically erected on the base 50. The support plate 51 is provided with a first inspection section 1, a second inspection section 2, a third inspection section 3, and a sorting section 4 in order from the left side to the right side in FIG. The clutch hub sleeve unit (work) 9 shown in FIGS. 9 and 10 is guided in this order.

On the front surface of the support plate 51, a pair of metal guide rails 52 and 53 are vertically arranged in parallel from the introduction section of the first inspection section 1 to the introduction section of the third inspection section 3. A workpiece 9 is fed between these guide rails 52 and 53 from the end on the first inspection section 1 side. When the workpiece 9 is fed between the guide rails 52 and 53, the guide rails 52 and 53 are fitted into the fork grooves 92b on the outer periphery of the sleeve 92, and the guide rails 5
2,53 will guide you to move. Each guide rail 52, 53 is connected to the third
The inspection part 3 side is inclined so that it is lower, so that the first inspection part 1 of the guide rails 52 and 53
When the workpiece 9 is fed into the side end, the workpiece 9
will roll down to the end on the third inspection section 3 side due to its own weight.

Through holes 11 and 20 are formed in the portion of the support plate 51 sandwiched between the guide rails 52 and 53 at the first inspection section 1 position and the second inspection section 2 position, respectively. Furthermore, approximately semicircular stoppers 54 and 55 are provided above the upper guide rail 52 and at positions closer to the second inspection section 2 and third inspection section 3 from the through holes 11 and 20, respectively. ing. These stoppers 54, 55 are rotatably supported by the support plate 51 via a shaft 56 as shown in FIG. It is rotated in the A and B directions, and parts 54a and 55a thereof are adapted to appear and disappear between the guide rails 52 and 53. When each stopper 54, 55 is rotated in the direction of arrow A in FIG. 55a allows the work 9 to be stopped at the positions where the through holes 11 and 20 are formed. Further, when each stopper 54, 55 is rotated in the direction of arrow B in FIG. 3 It becomes possible to freely roll to the inspection part 3 side.

As shown in FIG. 3, the first inspection section 1 is provided with a load cell 12 having a base 12a having approximately the same diameter as the boss portion 91a of the clutch hub 91 of the workpiece 9 on the front side of the support plate 51, and a support frame 14. A push-back cylinder 13 is provided on the rear side. The load cell 12 and the push-back cylinder 13 are arranged coaxially and facing each other. The workpiece 9 is stopped by the stopper 54 at a position where its axis coincides with the axes of the load cell 12 and the push-back cylinder 13.

The support frame 14 includes a cylinder mounting plate 141 disposed oppositely in front of the support plate 51, and a guide bar 1 disposed above the load cell 12 in parallel with its axis.
42 and a leg plate 143 disposed below the load cell 12. Cylinder mounting plate 14
1 is fixed to the support plate 51 via the leg plate 143,
The guide bar 142 has one end supported by the support plate 51 and the other end supported by the cylinder mounting plate 141.

The load cell 12 is configured to convert the load applied to the base 12a into an electric signal and detect it.
The load cell mounting bracket 15 is disposed within the support frame 14 so as to face toward the third side, and is attached to a load cell mounting bracket 15 that is slidably suspended from a guide bar 142. The end portion of a rod 16a of a load cell moving cylinder 16 fixed to a cylinder mounting plate 141 is screwed into the load cell mounting bracket 15. Therefore, when the load cell moving cylinder 16 operates and its rod 16a reciprocates, the load cell 12 moves forward (moves closer to the workpiece 9) and backwards (moves closer to the workpiece 9) while being guided by the load cell mounting bracket 15 and the guide bar 142. 9).

The push-back cylinder 13 is disposed so that the tip of the rod 13a faces the load cell 12, and is supported by a bracket 17 fixed to the rear surface of the support plate 51. Rod 13 above
A pressing plate 18 having approximately the same diameter as the boss portion 91a of the clutch hub 91 of the workpiece 9 is fixed to the tip a, and the pressing plate 18 is moved forward and backward by the operation of the pushing cylinder 13. .

In the first inspection section 1 having the above configuration, when the workpiece 9 is stopped by the stopper 54, first, the load cell moving cylinder 16 is operated and the load cell 12 is moved forward. When the load cell 12 moves forward, its base 12a comes into contact with the boss portion 91a of the clutch hub 91 of the workpiece 9 and pushes the clutch hub 91 in the thrust direction toward the push-back cylinder 13. As a result, the guide rails 52, 5
The clutch hub 91 is now shifted toward the push-back cylinder 13 with respect to the sleeve 92 held at the position 3. This amount of deviation is set to match the amount of deviation of the sleeve 92 when the work 9 is actually assembled into a gear type transmission or the like and the sleeve 92 is moved in the thrust direction with respect to the clutch hub 91.

Further, when the base 12a of the load cell 12 starts to push the clutch hub 91 of the workpiece 9, the pushing force comes to act on the base 12a, and as a result, the pushing force comes to be detected by the load cell 12.

By the way, the work 9 is in the keyway 9 of the sleeve 92.
If the positions of the clutch hub 91 and the key 95 are accurately aligned, the key 95 will be caught in the keyway 92a when the clutch hub 91 is moved in the thrust direction relative to the sleeve 92. resistance increases. On the other hand, the keyway 92
If the positions of the key 95 and the key 95 are not aligned, for example, if the key 95 is assembled in a position where there is no keyway 92a, the key 95 will no longer be caught in the keyway 92a, so there will be no resistance. The force becomes smaller. Therefore, as described above, the load cell 12 is advanced to move the clutch hub 91 into the sleeve 9.
2, if a large pressing force is detected by the load cell 12,
The work 9 is connected to the keyway 92a of the sleeve 92 and the key 9.
It is assembled in a state where the position with 5 is precisely matched,
On the other hand, if a small pressing force is detected, it can be seen that the workpiece 9 has been assembled with the keyway 92a and the key 95 not aligned. That is, the first inspection section 1 can inspect whether the workpiece 9 is assembled with the keyway 92a of the sleeve 92 and the key 95 accurately aligned.

Note that the clutch hub 91 is connected to the push-back cylinder 13.
After being shifted to the side and the rod 16a of the load cell moving cylinder 16 advances to the stroke end, the load cell 12 moves backward and leaves the workpiece 9. When the load cell 12 separates from the workpiece 9, the push-back cylinder 13 operates instead, and the pressing plate 18 advances, and the pressing plate 18 contacts the clutch hub 91 of the workpiece 9, returning the clutch hub 91 to its original state (the It will be pushed back to the state shown in Figure 3). After the clutch hub 91 is returned to its original position, the pressing plate 18 is moved back and away from the workpiece 9. Thereafter, the stopper 54 is removed and the workpiece 9 begins to roll down toward the second inspection section 2 side.

As shown in FIG. 2, the second inspection section 2 is provided with a pair of inspection members 21 and 22 that are arranged coaxially and facing each other. These inspection members 21 and 22 are
Bases 211, 221 whose outer peripheries are recessed from central boss portions 211a, 221a, respectively, and ring-shaped insulating plates 21 made of an insulating material such as nylon attached to the outer peripheries of these bases 211, 221.
2, 222, and ring-shaped metal detection plates 213, 223 attached to the outer periphery of the bases 211, 221 via the insulating plates 212, 222, and the detection plates 213, 2
23 are arranged to face each other. base 2
The boss portions 211a, 221a of the clutch hub 91 of the workpiece 9 are formed to have approximately the same diameter as the boss portion 91a of the clutch hub 91 of the workpiece 9.
is formed so that its outer diameter is slightly smaller than the inner diameter of the sleeve 92. In addition, Stoppa 5
5 allows the workpiece 9 to be stopped at a position where its axis coincides with the axes of the pair of inspection members 21 and 22.

A support frame 23 is provided on the front side of the support plate 51, and a rear inspection member moving cylinder (hereinafter referred to as "rear cylinder") 24 is provided on the rear side.

The support frame 23 includes a cylinder rod mounting plate 231 disposed oppositely in front of the support plate 51 , a guide bar 232 disposed above the front inspection member 21 parallel to its axis, and a guide bar 232 disposed below the front inspection member 21 . It is composed of a leg plate 233 provided. The cylinder rod mounting plate 231 is fixed to the support plate 51 via the leg plate 233, and the guide bar 232 has one end supported by the support plate 51 and the other end supported by the cylinder rod mounting plate 231.

Inside the support frame 23, the front inspection member 21, a first front inspection member moving cylinder (hereinafter referred to as "first front cylinder") 25, and a second front inspection member moving cylinder (hereinafter referred to as "second front cylinder") are disposed. ) 26 are provided. The first front cylinder 25 and the second front cylinder 26 are connected with their rods 25a, 26a facing away from each other. A cylinder mounting bracket 27 is slidably suspended on the guide bar 232, and the first front cylinder 25 is attached to the cylinder mounting bracket 27. The front inspection member 21 is attached to the tip of the rod 25a of the first front cylinder 25, and the tip of the rod 26a of the second front cylinder 26 is fixed to a cylinder rod mounting plate 231. Therefore, by selectively operating the first front cylinder 25 and the second front cylinder 26, the front inspection member 21
can be moved forward and backward in two stages.

The rear cylinder 24 is arranged so that the tip of the rod 24a faces the front inspection member 21 side, and is supported by a bracket 28 fixed to the rear surface of the support plate 51. Rod 24 above
A rear inspection member 22 is fixed to the tip a, and when the rear cylinder 24 operates, the rear inspection member 22 moves forward and backward. Note that the rear cylinder 24 has a lower operating force than each of the front inspection member moving cylinders 25 and 26.

Metal detection plate 213 of each inspection member 21, 22,
223 are connected to output terminals 291 and 292 of a touch sensor (not shown) via bolts 29, and to the upper guide rail 52 is connected an input terminal 293 of the touch sensor. When a weak current is passed from each of the output terminals 291 and 292 of the touch sensor to the input terminal 293, the touch sensor outputs an assembly failure signal.

In the second inspection section 2 having the above-mentioned configuration, when the workpiece 9 is stopped by the stopper 55, the second front cylinder 26 is operated and the front inspection member 21 is operated.
moves forward, and the boss portion 211a of the base 211 comes into contact with the boss portion 91a of the clutch hub 91 of the workpiece 9. Note that the second front cylinder 26
The stroke of the base 21 of the front inspection member 21
1's boss part 211a to the clutch hub 9 of the workpiece 9.
The amount is set to be enough to bring it into contact with the first boss portion 91a. Therefore, when the boss portion 211a of the base 211 of the front inspection member 21 comes into contact with the boss portion 91a of the clutch hub 91 of the workpiece 9, the front inspection member 21 is stopped at that position.

Furthermore, when the second front cylinder 26 operates, the rear cylinder 24 also operates almost simultaneously, and the rear inspection member 22 moves forward, causing the boss portion 2 of the base 221 to move forward.
21a is the boss portion 9 of the clutch hub 91 of the work 9
It comes into contact with 1a. Therefore, the boss portion 91a of the clutch hub 91 is sandwiched between the front inspection member 21 and the rear inspection member 22.

In this state, the first front cylinder 25 also operates, and since the operating force of the first front cylinder 25 exceeds the operating force of the rear cylinder 24, the front inspection member 21 moves further forward and the workpiece 9 is inspected. The clutch hub 91 is moved in the thrust direction toward the rear cylinder 24, and the rear inspection member 22 is moved backward, and as a result, as shown in FIG. As a result, the clutch hub 91 is shifted toward the rear cylinder 24. This amount of deviation is
The amount of deviation is set in the same way as the amount of deviation in the first inspection section 1 described above.

After the rod 25a of the first front cylinder 25 moves forward to the stroke end, the operation of the first front cylinder 25 and the second front cylinder 26 both stop, and only the rear cylinder 24 continues to operate. For this reason, the first front cylinder 25
and the second front cylinder 26 are both released, and only the operating force of the rear cylinder 24 acts, and the rear inspection member 22 moves forward to move the clutch hub 91 of the workpiece 9 to the first position. The clutch hub 91 is moved toward the front cylinder 25 in the thrust direction and the front inspection member 21 is moved backward, and as a result, the clutch hub 91 is shifted toward the first front cylinder 25 with respect to the sleeve 92. This amount of deviation is set to match the amount of deviation toward the rear cylinder 24 described above.

After the rod 24a of the rear cylinder 24 moves forward to the stroke end, the rear cylinder 24 stops operating, and only the second front cylinder 26 comes into operation. Therefore, the rear inspection member 22 moves back and leaves the workpiece 9, the front inspection member 21 moves forward, and the clutch hub 91 is returned to its original state (the state shown in FIG. 2). After the clutch hub 91 is returned to its original state, the front inspection member 21 is moved back and away from the workpiece 9.

In this way, in this second inspection section 2, the clutch hub 91 can be moved in the thrust direction relative to the sleeve 92, just like when it is actually used in a gear type transmission etc. . That is, the first front cylinder 25, the second front cylinder 26, the rear cylinder 24, the base 211 of the front inspection member 21, and the base 221 of the rear inspection member 22 move the clutch hub 91 relative to the sleeve 92 in the thrust direction. It serves as a driving means to move it.

By the way, if the workpiece 9 is assembled correctly, even if the clutch hub 91 is moved in the thrust direction relative to the sleeve 92 as described above, for example, if the clutch hub 91 is shifted relative to the sleeve 92 toward the rear cylinder 24, Also, as shown in FIG. 7, springs 93 and 94 are connected from the clutch hub 91.
The key 95 is moved along with the clutch hub 91 without coming off. However, spring 9
3, 94 and the key 95 are incorrectly assembled, or if even one spring 93, 94 is forgotten to be assembled, the springs 93, 94 and the key 95 will come off from the clutch hub 91 as shown in FIG. The end surface of the key 95 comes into contact with the detection plate 213 of the front inspection member 21. Therefore, a weak current is passed from the output side terminal 291 of the touch sensor to the input side terminal 293 through the inside of the workpiece 9, and an assembly failure signal is outputted from the touch sensor.
It is detected that the springs 93, 94 and the key 95 have been assembled incorrectly, or that the springs 93, 94 have been forgotten to be assembled.

Note that the clutch hub 91
If it is moved toward the first front cylinder 25 side, the touch sensor will similarly output an assembly failure signal.
It is detected that the springs 93, 94 and the key 95 have been assembled incorrectly, or that the springs 93, 94 have been forgotten to be assembled.

That is, the detection plate 213 of the front inspection member 21, the detection plate 223 of the rear inspection member 22, the output side terminals 291, 292 and the input side terminal 29 of the touch sensor.
3 is a detection means for detecting that at least one of the key 95 and springs 93 and 94 has come off from the clutch hub 95 when the clutch hub 91 is moved relative to the sleeve 92.

In this way, the second inspection section 2 checks whether the springs 93, 94 of the work 9 or the key 95 are assembled in an incorrect state, or whether the springs 93, 94 of the work 9 or the key 95
It is possible to check whether even one item of No. 3, 94 has been forgotten to be assembled. In addition, the front inspection member 2
1 retreats and leaves the workpiece 9, the stopper 55 is removed and the workpiece 9 rolls down to the third inspection section 3 side.

As shown in FIG. 4, the third inspection section 3 is provided with a pair of support rollers 31 and 32 rotatably supported by a support plate 51. As shown in FIG. These support rollers 31 and 32 have knurled outer circumferential surfaces, and are arranged at intervals, with one support roller 31 closer to the second inspection section 2 and the other support roller 32 closer to the sorting section 4. ing. The support roller 31 is provided at a position lower than the third inspection section 3 side of the lower guide rail 53, and the support roller 32 is provided at a position higher than the support roller 31 at the second inspection section side. Therefore, the workpiece 9 that has rolled down toward the third inspection section 3 can be caught by these support rollers 31 and 32.

A support roller drive motor 33 is provided behind the support plate 51.
The rotational force of No. 3 is transmitted to each support roller 31, 32 via gears 331, 332, thereby causing each support roller 31, 32 to rotate in the same direction.

A workpiece lifting cylinder 34 is provided below the support rollers 31 and 32. A workpiece lifting member 35 is attached to the tip of the rod 34a of the workpiece lifting cylinder 34, and when the workpiece lifting cylinder 34 operates, the workpiece lifting member 35 is moved to the support roller 34.
It is designed to move up and down between 1 and 32.
In other words, normally the support roller 31 on the second inspection section side
It is recessed at a position lower than the upper end, and when the workpiece lifting cylinder 34 is activated, it pops out to a position higher than the upper end of the support roller 32 on the sorting section 4 side. For this reason, the workpiece lifting member 3
5 moves upward, the workpiece 9 supported by the support rollers 31 and 32 is lifted upward by the workpiece lifting member 35 and the workpiece 9 is lifted up by the support roller 3
It will move away from 1,32. The upper surface 35a of the work lifting member 35 is inclined so that the side on the sorting section 4 side is lower than the side on the second inspection section side. Therefore, when the workpiece 9 is lifted upward by the workpiece lifting member 35, it rolls down toward the sorting section 4 side.

A guide plate 36 is provided in front of the support plate 51,
This guide plate 36 has a workpiece 9 between it and the support plate 51.
It extends to the sorting section 4 with an interval that allows it to pass through.

Above the support rollers 31 and 32, a light emitting element 37 supported by the guide plate 36 via a bracket 371 and a light receiving element 38 supported by the support plate 51 via a bracket 381 are provided. These light emitting element 37 and light receiving element 38 are arranged to face each other so as to sandwich the work 9 supported by the support rollers 31 and 32, and when the work 9 in the above state is rotated, the key 95 of the work 9 is arranged at a position such that it passes between both elements 37 and 38. When the light emitted from the light emitting element 37 is received by the light receiving element 38, an assembly failure signal is output from a light sensor (not shown).

In the third inspection section 3 having the above configuration, when the workpiece 9 that has rolled down from the second inspection section 2 is received by the support rollers 31 and 32, the support roller drive motor 33 is driven and the support rollers 31 and 32 are driven. As the workpiece 9 rotates, the workpiece 9 in contact with the support rollers 31 and 32 begins to rotate. Furthermore, when the workpiece 9 begins to rotate, light begins to be emitted from the light projecting element 37 toward the light receiving element 38. Here, all the keys 95 (in this example, 3
When the workpiece 9 is rotating, the light emitted from the light emitting element 37 is always blocked by the key 95 and the clutch hub 91, so the light does not reach the light receiving element 38, and the light sensor An assembly failure signal will not be output. However, if even one key 95 is missing,
When the missing part of the key 95 passes between the light projecting element 37 and the light receiving element 38, the light emitted from the light projecting element 37 reaches the light receiving element 38 through the missing part of the key 95. , an assembly failure signal is output from the optical sensor, and it is detected that the key 95 is missing. In other words, the third inspection section 3 can inspect whether all the keys 95 are installed.

After the workpiece 9 has been rotated several times, the workpiece lifting member 35 lifts the workpiece 9 upward, and the workpiece 9 separates from the support rollers 31 and 32 and rolls down toward the sorting section 4 side.

As shown in FIG. 5, the sorting section 4 is provided with a non-defective receiving plate 41 at a portion through which the workpieces 9 that have rolled down from the third inspection section 3 pass, and below the non-defective receiving plate 41. A defective product receiving duct 42 is disposed at . A cylinder 43 for driving a non-defective receiving plate is provided behind the support plate 51, and the above-mentioned non-defective receiving plate 41 is attached to the rod 43a of the cylinder 43 for driving a non-defective receiving plate, and the cylinder 43 for driving a non-defective receiving plate is operated. Then, the non-defective receiving plate 41 is configured to protrude and retract from the front surface of the support plate 51. Then, when no assembly defect signal is output from any of the first inspection section 1 to the third inspection section 3,
When the non-defective receiving plate 41 protrudes from the front surface of the support plate 51 and a defective assembly signal is output, the non-defective receiving plate 41 is retracted from the front surface of the supporting plate 51. A cylinder 43 for driving the receiving plate is activated. Therefore, when a workpiece 9 rolls down from the third inspection section 3 to the sorting section 4, if the workpiece 9 has been assembled correctly, it will land on the non-defective receiving plate 41, and if there is an assembly defect, it will will fall to the defective product receiving duct 42 side. In other words, the sorting section 4 is designed to distinguish between non-defective products and poorly assembled products.

As explained above, this assembly defect detection device inspects whether the workpiece 9 is assembled in a state in which the key groove 92a of the sleeve 92 and the key 95 are accurately aligned in the first inspection section 1. Then, the springs 93 and 94 of the workpiece 9 and the key 9 are inspected in the second inspection section 2.
The third inspection section 3 inspects whether the key 9 has been assembled incorrectly or whether even one spring 93, 94 has been forgotten to be assembled.
5 are all incorporated, and based on these results, a sorting section 4 separates non-defective products from defective products. Therefore, with the configuration of this assembly defect detection device, it is possible to reliably detect assembly defects in the workpiece 9 without any effort.

Depending on the type of workpiece 9, the keyway 92a may be formed over the entire inner circumference of the sleeve 92. When inspecting such a workpiece 9, the workpiece 9 may be formed in the keyway 92a of the sleeve 92. The first inspection section 1 may be omitted to prevent assembly with the wrong positional relationship between the key 95 and the key 95.

[Effect of idea]

The assembly defect detection device according to the present invention includes a drive means for moving the clutch hub relative to the sleeve of the workpiece in the thrust direction, and a drive means for moving the clutch hub relative to the sleeve by the drive means. and detecting means for detecting that at least one of the work key and the spring has come off the clutch hub. Therefore, if the workpiece is not assembled correctly,
When the clutch hub is moved relative to the sleeve in the thrust direction by the driving means, at least one of the key and the spring comes off from the clutch hub, and this is detected by the detection means and the workpiece is not assembled correctly. I understand that. Therefore, according to the present invention, it is possible to reliably detect a workpiece assembly failure.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a schematic configuration of an embodiment of the assembly defect detection device according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a sectional view taken along the line -- in FIG. 1. , Fig. 4 is a sectional view taken along the - line in Fig. 1, Fig. 5 is a sectional view taken along the - line in Fig. 1, Fig. 6 is a view taken in the direction of the arrow in Fig. 1, and Fig. 7 shows that the workpiece is correctly assembled. A sectional view showing the operating state of the second inspection section when
FIG. 8 is a sectional view showing the operating state of the second inspection section when a workpiece has been assembled incorrectly, FIG. 9 is a sectional view of the workpiece, and FIG. 10 is an exploded perspective view thereof. 9...Work, 24, 25, 26, 211, 2
21... Drive means, 91... Clutch hub, 92
...Sleeve, 92a...Keyway, 93, 94...
...Spring, 95...Key, 213, 223,
291, 292, 293...detection means.

Claims (1)

[Scope of utility model registration request] a clutch hub; a sleeve coupled to the outer periphery of the clutch hub so as to be movable in a thrust direction;
A pair of springs are fitted into both sides of the clutch hub in the thrust direction, and the clutch hub is supported by the pair of springs while being pressed against the inner peripheral surface of the sleeve. and a key engaged in a key groove formed on a surface, and the key is configured to be engaged and disengaged from the key groove by moving the sleeve in the thrust direction. An assembly defect detection device for detecting an assembly failure, comprising: a drive means for moving the clutch hub relative to the sleeve in a thrust direction; and a drive means for moving the clutch hub relative to the sleeve by the drive means. When
An assembly defect detection device comprising: detection means for detecting that at least one of the key and the spring has come off from the clutch hub.