JP3093023U - Damper coupling assembly - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make it possible to attach a damper to a coupling with one touch, and to simplify a process of attaching the damper and connecting an output shaft and a driven shaft by the coupling. A cylindrical portion of a damper (6) is divided into a plurality of portions by split grooves (13 '), and the cylindrical portion of the damper (6) is inserted from an engagement head (24) at a distal end thereof into a hole on the base end side of the coupling (1). ,
The engagement head 24 is provided on the engagement wall 1 of the central hole 8 of the coupling 1.
4, the damper 6 is attached to the coupling 1, and the engaging head 24 is moved in the axial direction thereof as required.
The plate material 28 passes through the arc-shaped slit 2 of the coupling 1.
To release the engagement head 24 and remove it from the coupling 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention is a damper and a coupling used for a motor such as a stepping motor. The present invention relates to a damper / coupling assembly that is combined with the

[0002]

[Prior art]

  Conventionally, in the storage devices of personal computers, office equipment, and various other equipment, In particular, in storage devices, high-speed rotation of rotating storage media is used. And a stop is required for accurate positioning. Therefore, the motor and its output If torsional vibration occurs on the shaft, accurate positioning cannot be performed, noise is generated, and the speed is higher. It lacks stability due to its rotation.

[0003]   Therefore, as a means to solve this problem, a stepper motor has a damper mechanism. Is usually adopted. For example, floppy disk drive Set ring tie for stepping motor for positioning the engaging head used in It is known to provide a damping prevention mechanism (damper) to shorten the length (For example, refer to Patent Document 1 and Patent Document 2).

[0004]   In addition, a damper coupling that has both a damper and a coupling function (damper A joint having an effect) is known (for example, refer to Patent Document 3). As a damper, a damper that damps torsional vibration of a rotating body is well known (for example, a non-specific damper). See Reference 1. ).

[0005]

[Patent Document 1]           JP 62-173971A

[Patent Document 2]           JP 61-009156 A

[Patent Document 3]           Japanese Utility Model Publication No. 55-45093

[Non-Patent Document 1]           The Japan Patent Office, issued by the Japan Institute of Invention and Innovation (issued in February 1982), machine element           Handbook "Shafts, bearings, springs, shock absorbers" (p. 1271-1279)

[0006]

[Problems to be solved by the device]

  Conventionally, a damper is provided on the output shaft of a motor, etc., and the output shaft and driven shaft are connected. When adopting the configuration, the damper and the coupling are usually installed independently. I'm sick. With such a configuration, the damper mounting process and the coupling Since the connecting process of the output shaft and the driven shaft must be performed separately, the manufacturing process is It becomes complicated, and in some cases, a motor having output shafts on both sides is required.

[0007]   The damper coupling shown in Patent Document 2 is a coupling having a damper function. Yes, the damper and the coupling were manufactured separately and mounted on each other. Since it is not a thing, its structure is complicated and large, and it is not necessary to assemble multiple parts. Since it does not occur, the manufacturing process becomes complicated, and there are no Also, it takes effort. Also, dampers are not required and only the coupling is used. There is no flexibility in selecting such parts.

[0008]   An object of the present invention is to realize the following damper / coupling assembly. It (1) Although the coupling and damper can be manufactured separately, the damper can be mounted with one touch. Easily manufacture compact damper / coupling assembly by attaching to the pull ring. It is possible. (2) Since the damper is attached to the coupling with one touch, the coupling If you connect the output shaft and driven shaft with, the damper will be automatically attached to the output shaft, The work efficiency can be improved by mounting the damper and connecting the shafts by the coupling at the same time. Let it go up. (3) The damper is a component that can be easily removed from the coupling. It simplifies work during replacement and maintenance and improves work efficiency.

[0009]

[Means for Solving the Problems]

  In order to solve the above problems, the present invention detachably attaches a damper to a coupling. A damper / coupling assembly comprising: It consists of a cylinder that connects the driven shaft, and the damper is inserted into the coupling to mount it. The drive shaft and the driven shaft with the damper attached to the coupling. It has a structure that allows the above-mentioned damper to be removed from the coupling. A damper / coupling assembly is provided.

[0010]   The drive shaft is the output shaft of the stepping motor, and the damper is the stepper motor. A damper may be used to prevent torsional vibration of the topping motor.

[0011]   The coupling has a driving shaft and a driven shaft which are coupled by the coupling. There is a screw hole for fixing the drive shaft to the damper. There is a stop hole where the tip of the screw engages at a position corresponding to the screw hole for fixing. It may be configured.

[0012]

[Embodiment of device]

  FIG. 1 is a view showing an embodiment of a damper / coupling assembly according to the present invention based on an embodiment. A description will be given below with reference to the surface.

[0013]   In the damper / coupling assembly according to the present invention, the damper is attached to the coupling. It is an assembly that consists of an output shaft (driving side shaft) of the motor and a driven shaft. At the same time, the damper can be easily attached to the output shaft of the motor. And are characterized.

[0014] (Example 1)   1 to 3 illustrate a first embodiment of a damper / coupling assembly according to the present invention. It is a figure. FIG. 1 shows components of a damper / coupling assembly according to the present invention. It is a figure explaining coupling 1, Drawing 1 (a) is the perspective view, and Drawing 1 (b). ) Is the AA sectional view, and FIG. 1C is the BB sectional view of FIG. 1B. It

[0015]   The coupling 1 is made of a metal material such as aluminum or stainless steel. And is formed in a tubular shape as a whole. In Example 1, it is formed into a cylindrical shape. However, it may be in the shape of a square tube or a combination of a cylinder and a square tube.

[0016]   This coupling 1 has circular arc-shaped sleeves in the circumferential direction at appropriate intervals in the longitudinal direction. 2 is formed. In this Example 1, it extends close to the base end 3 of the coupling 1. And a circular arc-shaped slit 2 near the tip 4 and a hollow hole from the outer surface of the coupling 1. It is formed so as to penetrate to the (cylindrical hole). Such an arc-shaped slit 2 The specific formation position and number are as follows: It is designed appropriately in consideration of various conditions such as the way.

[0017]   The base end face 3 ′ and the tip end face 4 ′ of this coupling 1 have a diametrical direction (FIG. 1A). In, a notch 5 is formed in the upper and lower diametrical directions. Longitudinal direction of this notch 5 As for the depth of the direction, it depends on the thickness of the shaft, the transmission torque, the application, etc. It is designed appropriately in consideration of various conditions.

[0018]   The hollow hole (cylindrical hole) of the coupling 1 has a cylindrical shape as shown in the cross section of FIG. From the proximal end to the distal end of the pulling 1, the cylindrical portion fitting hole 7 of the damper 6, which will be described later, Three holes, a central hole 8 and a driven shaft fitting hole 9, are formed concentrically and in communication with each other. ing.

[0019]  The inner diameter of the cylindrical fitting hole 7 is substantially equal to the outer diameter of the cylindrical main body 22 of the damper 6 described later, The inner diameter of the driven shaft fitting hole 9 is formed to be substantially equal to the outer diameter of the driven shaft 12. The inner diameter of the central hole 8 is at least larger than the outer diameter of the tubular body 22 of the damper 6. It is formed into a ring shape, so that the continuous portion of the cylindrical fitting hole 7 and the central hole 8 has an annular shape. Engaging wall 14 is formed.

[0020]   Between the base end 3 of the coupling 1 and the arcuate slit 2 on the base end side, and the coupling ring. The space between the tip 4 of the groove 1 and the arcuate slit 2 on the tip side is shown in FIG. Thus, a pair of upper and lower screw holes 15 are formed. The pair of upper and lower screw holes 15 , So that the left and right extend in opposite directions and the cuts 5 in the upper and lower diametrical directions are orthogonal It is formed in the tangential direction of the cylindrical fitting hole 7. The screw insertion hole 16 is the head of the screw 17. The larger diameter extends in the tangential direction of the coupling 1 and Each has an opening on the surface.

[0021]   FIG. 2 shows a damper 6 which is a component of the damper / coupling assembly according to the present invention. 2 (a) is a perspective view thereof, and FIG. 2 (b) is an A-A diagram thereof. A cross-sectional view is shown.

[0022]   The damper 6 has a donut-shaped damper portion 18 and a tubular portion 13 as its outline. It is formed from and. The center hole of the damper part 18 and the cylinder hole of the cylinder part 13 are common. Thus, the output shaft fitting hole 19 of the stepping motor 10 is formed.

[0023]   The damper portion 18 is a vibration isolation (rotational torsional vibration) of the output shaft 11 of the stepping motor 10. Vibration prevention) to give a smooth rotational movement. There are various configurations, but basically, the rotating member is made of elastic rubber or spring, or viscous. It is a structure that an inertial body is attached via a material.

[0024]   The damper portion 18 itself has a well-known structure and is not the subject matter of the present invention. (B) and the sectional view of FIG. 3 are not shown in detail, and detailed description is omitted in the specification. However, an example thereof is shown in FIG. The damper section 18 shown in FIG. Is an example composed of a ring-shaped rubber 20 and a ring-shaped inertial body 21 outside thereof. Other known structures of the damper section 18 are also described in Non-Patent Document 1 mentioned above. Described in Japanese Patent Publication No. 44-16403 and Japanese Patent Publication No. 55-44357. It is listed.

[0025]   The cylinder portion 13 of the damper 6 includes a cylinder body 22 and a taper surface (tapered outer periphery) at the tip thereof. It is integrally formed with an engaging head 24 having a surface 23. This taper surface 2 3 has a diameter that gradually increases from the distal end (right end in FIG. 2B) of the tubular portion 13 toward the proximal end. Has become. The base end 25 of the tapered surface 23 is larger than the outer diameter of the tubular body 22. Has been formed. A continuous portion of the base end 25 of the tapered surface 23 and the cylindrical body 22, that is, the engagement end. The base end surface of the lid 23 is an engagement surface (engagement head engagement) orthogonal to the longitudinal direction of the tubular portion 13. Surface) 26 is formed.

[0026]   Although the cylindrical portion 13 of the damper 6 is rigid, it has some elasticity and is deformable. So Then, through the tubular portion main body 22 and the engaging head 24, the longitudinal A pair of split grooves 13 'are formed in the direction, and are formed in a pair of half split shapes. By this Thus, the tubular portion 13 applies an external force to the tubular portion main body 22 and the engagement head 24 in the radial direction. It is deformable.

[0027]   FIG. 3A is formed by assembling the coupling 1 and the damper 6 shown in FIGS. It is a figure explaining the structure of the damper coupling assembly 27 which concerns on this invention. this The damper / coupling assembly 27 connects the cylindrical portion 13 of the damper 6 to the engaging head 24 thereof. Is inserted into the cylindrical fitting hole 7 of the coupling 1, and the engaging surface 26 of the engaging head 24 is inserted. Are engaged with the engaging wall 14 of the central hole 8 and are fitted to each other to be assembled as one assembly. Be taken.

[0028]   When the tubular portion 13 of the damper 6 is inserted into the tubular portion fitting hole 7 of the coupling 1, the engagement is performed. The head 24 comes into contact with the inner surface of the cylindrical fitting hole 7 so that the pair of half-divided engaging heads 24 are in contact with each other. Elastically deformed in the axial direction so as to come closer to each other, At the moment of insertion, the urging force toward the center of the pair of engaging heads 24 is released, Returning to the outward opening direction, the engagement surface 26 of the engagement head 24 is replaced with the engagement wall 1 of the central hole 8. Engage 4

[0029] (Action)   State of use of the damper / coupling assembly 27 according to the present invention having the above structure This will be described with reference to FIG.

[0030]   The damper 6 is attached to the output shaft 11 of the stepping motor 10 and In order to connect the driving shaft 12, first, the output shaft 11 of the stepping motor 10 is Insert into the output shaft fitting hole 19 of the damper 6 of the par / coupling assembly 27 up to its tip. To enter. In this state, the screw 17 is screwed into the pair of upper and lower screw holes 15, and the notch 5 is Screw in the directions toward each other, and by the coupling 1, the tubular portion main body 22 of the damper 6 And the output shaft 11 are tightened, and the coupling 1 and the damper 6 are connected to the output shaft. Can be fixed to 11.

[0031]   Further, the base end side of the driven shaft 12 is connected to the cup of the damper / coupling assembly 27. The ring 1 is inserted into the driven shaft fitting hole 9. In this state, a pair of upper and lower screw holes 15 Insert the screw 17 into the screw and screw it in the direction that the notches 5 come close to each other, and 1 so that the driven shaft 12 is tightened, and the driven shaft 12 is fixed to the coupling 1. To wear. As a result, the damper 6 is mounted on the output shaft 11 of the stepping motor 10. While wearing, the output shaft 11 and the driven shaft 12 can be coupled.

[0032]   Whether the damper 6 is inside or outside between the screw 17 and the output shaft 11 of the stepping motor 10. The output shaft 11 is firmly fixed by tightening the Can be prevented. Further, the pair of half-divided engagement heads 24 are provided to engage the engagement wall 14 of the central hole 8. The damper 6 does not come off from the coupling 1 since it is locked in the.

[0033]   The damper / coupling assembly 27 according to the present invention includes the cylindrical portion 13 of the damper 6 The engaging head 24 is inserted into the cylindrical fitting hole 7 of the coupling 1, By engaging the engagement surface 26 of No. 4 with the engagement wall 14 of the central hole 8, one-touch assembly Since it can be set up, its manufacturing process can be greatly simplified.

[0034]   Further, the screw 17 is screwed into the screw hole 15 so that the tubular portion 13 of the damper 6 is stepped. The output of the stepping motor 10 is fixed by pressing it against the output shaft 11 of the motor 10. Fixing the force shaft 11 and coupling 1 and mounting the damper 6 in one step You can do more.

[0035]   In the damper / coupling assembly 27 according to the present invention, a pair of dampers 6 The cylindrical main body 22 of the half is positioned inside the arc-shaped slit 2 of the coupling 1. Therefore, the damper in which the output shaft 11 and the driven shaft 12 are connected is When disassembling the coupling assembly 27, the damper 6 is coupled by the plate member 28. It can be removed very easily from ring 1.

[0036]   That is, the screw 17 is removed from the screw hole 15 and the output shaft 11 and the driven shaft 12 are closed. Pull out from pulling 1. Then, as shown in FIG. The rigid plate member 28 is inserted into the arc-shaped slit 2 from both sides to form a pair of half-divided cylindrical portions. The main body and the engaging head 24 are pressed inward from the outside toward the axis thereof. Then, The engagement between the engagement surface 26 of the pair of half-divided engagement heads 24 and the engagement wall 14 of the central hole 8 Since it comes off, the cylinder portion 13 of the damper 6 can be easily removed from the cylinder portion fitting hole 7 of the coupling 1. You can take it off.

[0037]   As described above, according to the present invention, the damper 6 can be easily attached to the coupling 1 with one touch. It can be simply mounted and the damper 6 can be easily removed from the cylindrical fitting hole 7 of the coupling 1. You can Therefore, the type of the damper 6 for the motor 10 and its output shaft 11 When changing the damper 6 to change the type or ability, or when performing maintenance, etc. Then, the work becomes extremely easy.

[0038]   In the first embodiment, the damper / coupling assembly 27 according to the present invention is mounted on the step. Although it is applied to the output shaft 11 of the switching motor 10, in the stepping motor 10, Since the operations such as the start and stop of rotation, and the positioning are performed abruptly, torsional vibration Etc., the rotation and stop operation of the output shaft 11 lack stability. However, this consideration By applying the damper 6 as proposed, the torsional vibration of the output shaft 11 can be absorbed. , The rotation and stop of the output shaft 11 are stable, and smooth rotation and reliable stop operation are performed on the driven shaft. 12 can be transmitted.

[0039]   The damper / coupling assembly 27 according to the present invention is particularly suitable for stepping models. The invention is not limited to the motor 10 and can be applied to the motors 10 of various types and purposes.

[0040] (Example 2)   4 to 6 illustrate a damper / coupling assembly according to a second embodiment of the present invention. It is a figure. FIG. 4 shows components of a damper / coupling assembly according to the present invention. It is a figure explaining the coupling 29, FIG.4 (a) is the perspective view, FIG. b) A-A cross-sectional view thereof (however, the screws 32 are screwed into some of the plurality of screw holes 31) The state is also shown. ) And FIG. 4 (c) are sectional views taken along line BB of FIG. 4 (b).

[0041]   The coupling 29 has almost the same structure as that of the first embodiment, and is made of aluminum, stainless steel. It is made of metal material such as stainless steel and has a cylindrical shape (square tube shape, or cylinder and square tube are integrated. It may be a combination. ). The hollow hole of the coupling 29 is the same as that of the first embodiment. In addition, as shown in the cross section in FIG. 4 (b), it goes from the base end side to the tip end side in the longitudinal direction. The cylindrical fitting hole 7, the central hole 8 and the driven shaft fitting hole 9 are concentric with each other and It is formed by communicating with each other.

[0042]  The inner diameter of the cylindrical fitting hole 7 is approximately equal to the outer diameter of the output shaft 11 of the stepping motor 10. In addition, the inner diameter of the driven shaft fitting hole 9 is formed to be substantially equal to the outer diameter of the driven shaft 12. It The inner diameter of the central hole 8 is larger than the outer diameter of the cylindrical portion 33 of the damper 30, which will be described later. Is made.

[0043]   As shown in FIGS. 4B and 4C, the coupling 29 has a proximal end side and a distal end side. , The screw holes 31 penetrating from the outer surface to the cylindrical fitting hole 7 and the driven shaft fitting hole 9, respectively, It is formed so as to be orthogonal to the radial direction. The screw hole 31 will be described later. As described above, the screws 32 are screwed into the damper 30 and the stepping motor 10 respectively. The output shaft 11 and the driven shaft 12 are fixed.

[0044]   FIG. 5 shows a damper 3 which is a component of the damper / coupling assembly according to the present invention. 5 (a) is a perspective view thereof, and FIG. 5 (b) is its A- line. A sectional view is shown.

[0045]   The configuration of the damper 30 is almost the same as that of the first embodiment, and therefore detailed description thereof will be omitted. Although omitted, the characteristic configuration of the damper 30 is that the cylindrical portion 33 of the damper 30 is Two screws that match the screw hole 31 and are slightly larger than the screw 32 That is, the stop holes 34 are formed so as to be orthogonal to each other in the radial direction.

[0046]   FIG. 6 is an actual assembly obtained by assembling the coupling 29 and the damper 30 shown in FIGS. A configuration of the damper / coupling assembly 35 according to the second embodiment and an application example thereof will be described. It is a figure. FIG. 6A shows a state in which the damper 30 is attached to the coupling 29, FIG. 6B is a sectional view taken along the line AA.

[0047]   Insert the cylinder portion 33 of the damper 30 into the cylinder portion fitting hole 7 of the coupling 29, and The screw 32 is inserted into the screw 31 and the tip of the screw 32 is fixed to the stopper hole 34 of the cylindrical portion 33 of the damper 30. Screw it in until it is locked in. As a result, the coupling 29 and the damper 30 are It is assembled as a damper / coupling assembly 35.

[0048]   While mounting the damper 30 on the output shaft 11 of the stepping motor 10, In order to connect the drive shaft 12, first, the screw 32 is loosened and the stepping motor 10 Of the output shaft 11 of the damper coupling coupling assembly 35 into the cylindrical portion 33 of the damper 30. Insert to the tip. In this state, insert the screw 32 into the screw hole 31 and The output shaft 11 is tightened from the direction perpendicular to the radial direction with the tip of the screw 32, The output shaft 11 is fixed to the tubular portion 33 of the ring 29 and the damper 30.

[0049]   Further, the base end side of the driven shaft 12 is connected to the cup of the damper / coupling assembly 35. The ring 29 is inserted into the driven shaft fitting hole 9. In this state, a pair of upper and lower screw holes 3 The screw 32 is screwed into 1 and the driven shaft 12 is driven from the radial direction by the tips of the two screws 32. The driven shaft 12 is fixed to the coupling 29 by tightening.

[0050]   As a result, the damper 30 is mounted on the output shaft 11 of the stepping motor 10. At the same time, the output shaft 11 and the driven shaft 12 can be coupled. The damper 30 is Since the screw 32 is engaged in the stop hole 34, the rotation deviation can be prevented.

[0051]   The damper / coupling assembly 35 according to the present invention is mounted on the cylindrical portion 33 of the damper 30. Insert the output shaft 11 of the stepping motor 10 and tighten the screw 32, Fixing the output shaft 11 of the coupling motor 10 to the coupling 29 and removing the damper 30. Attachment can be done in a single step. When disassembling, loosen the screw 32 a little. If so, the output shaft 11 can be easily removed, and the screw 32 can be further fixed to the cylinder portion 33 of the damper 30. If the damper 30 is loosened to the extent that it does not engage (engage) with the female hole 34, the damper 30 also Can be easily removed from.

[0052]   Therefore, in the second embodiment, as in the first embodiment, the damper 30 can be easily attached to the coupling 29. It can be mounted, and the damper 30 can be easily removed from the cylindrical fitting hole 7 of the coupling 29. You can Therefore, the damper 30, the coupling 29, the output shaft 11 and the driven The step of assembling the moving shaft 12 is simplified, and the stepping motor 10 and its output The damper 30 is replaced to change the type and capacity of the damper 30 for the shaft 11. In case of maintenance or maintenance, the work is extremely easy.

[0053]   In addition, the coupling 29 and the damper 30 of the first and second embodiments are assembled together. You may change the match. That is, the coupling 29 of the first embodiment and the damper of the second embodiment. 30 in combination, or the damper 30 of the first embodiment and the coupling 29 of the second embodiment. The damper / coupling assembly 35 may be configured by combining the above.

[0054]   As described above, the embodiments of the damper / coupling assembly according to the present invention will be referred to as examples. However, the present invention is not particularly limited to such an embodiment, It is said that there are various embodiments within the technical scope described in the claims for new model registration. There is no end.

[0055]

[Effect of device]

  Since the damper / coupling assembly according to the present invention is configured as described above, The effect like this occurs. (1) In the present invention, the coupling and the damper can be manufactured separately, but The damper can be attached to the coupling with a switch, and its structure is simple and It becomes

[0056] (2) A damper / coupling made by attaching the damper to the coupling with one touch By connecting the output shaft and the driven shaft with the assembly, the damper is automatically attached to the output shaft. Therefore, it is necessary to install a damper and connect the output shaft and driven shaft by coupling. Can be performed simultaneously, and the manufacturing process therefor is extremely simple.

[0057] (3) Since the damper and coupling can be easily attached and detached, maintenance and damper It becomes easy to change the work.

[Brief description of drawings]

FIG. 1 is a view for explaining the coupling of the first embodiment of the damper / coupling assembly according to the present invention, and FIG.
Is a perspective view, FIG. 1 (b) is an AA sectional view thereof, and FIG. 1 (c) is a BB sectional view of FIG. 1 (b).

2A and 2B are views for explaining the damper of the first embodiment of the damper / coupling assembly according to the present invention, FIG. 2A is a perspective view, and FIG. 2B is a sectional view taken along the line AA. And Figure 2
(C) is a figure which shows an example of a damper part.

FIG. 3 is a diagram illustrating a configuration of a damper / coupling assembly according to a first embodiment of the present invention, and FIG. 3 (a) shows a damper / coupling assembly in which a damper is mounted on the coupling. 3 (b) shows an example of using the damper / coupling assembly, and FIG. 3 (c) is a diagram for explaining how to remove the damper from the coupling.

FIG. 4 is a view for explaining the coupling of Embodiment 2 of the damper / coupling assembly according to the present invention, and FIG.
Is a perspective view, FIG. 4 (b) is a sectional view taken along line AA, and FIG. 4 (c) is a sectional view taken along line BB in FIG. 4 (b).

5A and 5B are views for explaining a damper according to a second embodiment of the damper / coupling assembly according to the present invention, FIG. 5A is a perspective view, and FIG. 5B is its AA cross section. It is a figure.

FIG. 6 is a diagram for explaining the configuration of a damper / coupling assembly according to a second embodiment of the present invention, and an example of assembling and using the damper and the coupling. FIG. FIG. 6 (b) is a sectional view taken along line AA of FIG.

[Explanation of symbols]

1 Coupling of Example 1 2 Arc-shaped slit 3 Base end of coupling 3'Base end face of coupling 4 Tip of coupling 4 'Tip end face of coupling 5 Cut 6 Damper of Example 1 7 Cylindrical fitting Hole 8 Central hole 9 Driven shaft fitting hole 10 Stepping motor 11 Stepper motor output shaft 12 Driven shaft 13 Damper cylinder 13 'Damper cylinder split groove 14 Coupling engagement wall 15 Screw hole 16 Screw insertion Hole 17 Screw 18 Damper part 19 Output shaft fitting hole 20 Rubber of damper part 21 Inertial body of damper part 22 Main body of damper part 23 Tapered surface of engaging head 24 Engaging head 26 Engaging surface of engaging head 27 Implement Damper / Coupling assembly of Example 1 28 Plate material 29 Coupling of Example 2 30 Damper of Example 2 31 Screw hole 32 Screw 33 Cylindrical part of damper 34 Stop Hole 35 Damper / Coupling Assembly of Embodiment 2

Claims (3)

[Scope of utility model registration request] 1. A damper / coupling assembly comprising a damper removably attached to a coupling, wherein the coupling comprises a cylindrical body for coupling a drive shaft and a driven shaft, wherein the damper comprises: The structure is such that the damper can be inserted into the coupling and mounted, and the damper can be coupled with the drive shaft and the driven shaft in a state where the damper is mounted, and the damper can be removed from the coupling. Damper / coupling assembly. 2. The damper / coupling assembly according to claim 1, wherein the drive shaft is an output shaft of a stepping motor, and the damper is a damper for preventing torsional vibration of the stepping motor. 3. The coupling has screw holes for fixing a drive shaft and a driven shaft, which are coupled by the coupling, with screws, and the damper fixes the drive shaft. The damper / coupling assembly according to claim 1 or 2, wherein a stop hole into which the tip of the screw is engaged is formed at a position corresponding to the screw hole.