JP2003236767A - Working mechanism, working mechanism attachment, and working tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working mechanism, a working mechanism attachment, and a working tool capable of screwing a male screw member with a female screw member at a high torque even when a rotating source having low torque output is employed. <P>SOLUTION: The working mechanism 2 comprises a torque transmitting cylinder 30 engaged with a female screw head Ah of the female screw member A inserted into two or more plate materials P, and a torque transmitting shaft 31 engaged with a male screw head Bh of the male screw member B screwed with the female screw member A. Rotation from the rotating source is transmitted to either the torque transmitting cylinder 30 or the torque transmitting shaft 31 to fasten the male screw member B to the female screw member A, thereby deforming the female screw member A axially and fastening the two or more plate materials P. The working mechanism 2 also comprises a reduction gear for reducing output rotation speed of the rotating source, and the output rotation of the reduction gear is transmitted to one of the torque transmitting cylinder 30 and the torque transmitting shaft 31. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuating mechanism, an actuating mechanism attachment, and an actuating tool for fastening two or more superposed plates with a special fastening member.

[0002]

2. Description of the Related Art Conventionally, general screws and rivets have been known as members for fastening steel plates and various members. However, members having these general structures may have a problem from the viewpoint of workability. Yes, each manufacturer provides a special fastening member (hereinafter referred to as a special fastening member).

As one of them, a female screw member comprising a cylindrical body having a polygonal outer periphery (hereinafter referred to as a female screw head) formed at one end and a screw formed on the inner peripheral surface, Some are configured with a male screw member composed of a hexagon socket head cap screw. In this special fastening member, the female screw member is inserted into the communication hole punched in two or more superposed steel plates, and then the female screw member is prevented from rotating, and the male screw member is inserted from the female screw head side. It is configured to be screwed into a female screw member and axially compressed by an axial force generated by tightening with a male screw member to deform the female screw member made of a cylinder in an axial direction to fasten steel plates together.

In order to fasten the steel plates together with the special fastening member in this way, a working tool dedicated to the special fastening member is used. The operating tool is connected to an operating mechanism portion for screwing the female screw member and the male screw member together, an electric motor as a rotary drive source, and a drive shaft of the electric motor to rotate the operating mechanism portion. It is composed of a clutch mechanism that transmits and a casing that houses them.

One end of the actuating mechanism is fixed to the casing, and the inner peripheral shape of the other end corresponds to the shape of the female screw head of the female screw member, and the torque transmitting cylinder and the shaft center. Is inserted in the state of being matched with each other, one end is connected to the clutch mechanism, and the other end is composed of a torque transmission shaft shaped to be fit into the hexagonal hole of the male screw member.

The clutch mechanism is composed of a pair of clutch plates and a coil spring that brings the pair of clutch plates into contact with each other. Protrusions having inclined surfaces in the circumferential direction of the discs are formed on the opposing surfaces of the clutch plates. By urging the coil springs on the clutch plates, the protrusions (inclined surfaces) are brought into contact with each other. It is configured to transmit torque. Therefore, in the clutch mechanism, when a large load is generated, slippage occurs on the inclined surface of the protrusion of the clutch plate,
The coil spring is bent to separate the pair of clutch plates from each other. The clutch mechanism is configured so that the transmission torque can be adjusted by adjusting the spring length (spring force) of the coil spring.

In the working tool thus constructed, the female screw head of the female screw member is fitted into one end of the torque transmitting cylinder, and the other end of the torque transmitting shaft is fitted into the hexagonal hole of the male screw member. In this state, by rotating the electric motor, the male screw member is screwed into the female screw member while the rotation of the female screw member is restricted, and the steel plates are fastened to each other as described above.

[0008]

However, as described above, the special fastening member is configured to fasten the plate member by screwing the male screw member into the female screw member and deforming the female screw member in the axial direction. Therefore, it is necessary to increase the screwing force (rotational torque) of the male screw member by the torque transmission shaft of the working tool, and in the working mechanism of the working tool with the above configuration, if an electric motor that outputs with low torque is used, torque will be insufficient. Therefore, it was necessary to adopt an electric motor that outputs with high torque.

Further, as described above, since the electric motor which outputs at a high torque must be adopted, the clutch mechanism can transmit the rotation of a high torque from the electric motor to the torque transmission shaft, that is, the clutch. The plate is configured to urge a large spring force, and there is a problem that when the clutch plates slip with each other due to a load larger than a predetermined value, the protrusions of the clutch plates are worn out.

The clutch mechanism is constructed so that the amount of transmission torque can be adjusted by adjusting the amount of flexure of the spring, but a spring having a large spring coefficient is used to transmit high torque rotation to the torque transmission shaft. Since this is adopted, a large force for bending the spring is required when adjusting the amount of transmission torque, and it is difficult to finely adjust the transmission torque.

Therefore, in view of the above situation, the present invention provides an operating mechanism and an operating mechanism attachment capable of tightening a male screw member and a female screw member with a high torque even if a rotary drive source outputting a low torque is adopted. , It is an object to provide a working tool.

[0012]

[Means for Solving the Problems] In order to solve the above problems,
As described in claim 1, the actuating mechanism according to the present invention transmits torque by engaging one end portion with the female screw head Ah of the cylindrical female screw member A inserted through the two or more stacked plate members P. A cylinder 30 and a male screw member B inserted into the torque transmission cylinder 30 with their axes substantially aligned with each other and screwed into the female screw member A.
Transmission shaft 3 for engaging one end with the male screw head Bh
1 and the torque transmission cylinder 30 or the torque transmission shaft 3
The torque from the rotary drive source is transmitted to at least one of the first to relatively rotate the torque transmission cylinder 30 and the torque transmission shaft 31 about the shaft center, and the male screw member B with respect to the female screw member A is rotated. An operating mechanism that deforms the female screw member A in the axial direction by tightening to fasten the two or more plate members P, and includes a speed reducer 32 that decelerates and outputs the output rotation speed of the rotary drive source. The output rotation of the speed reducer 32 is configured to be transmitted to either the torque transmission cylinder 30 or the torque transmission shaft 31.

According to the actuation mechanism having the above-described structure, the rotation from the rotary drive source is reduced by the speed reducer 32 and transmitted to the torque transmission shaft 31 or the torque transmission cylinder 30, so that the output of the rotary drive source is low torque. Even if there is, the torque transmission shaft 31 or the rotational torque of the torque transmission shaft 31 can be made high torque. Therefore, a rotary drive source that outputs with low torque can be employed.

Further, the rotation of the rotary drive source is transmitted to the speed reducer 32 of the actuating mechanism through a clutch mechanism that transmits a rotational torque by engaging a pair of clutch plates by urging a spring force. Even in such a case, since the rotation input from the rotary drive source to the clutch mechanism has a low torque, the spring force biasing the clutch plate can be reduced, and the clutch plate constituting the clutch mechanism is not worn. Can be prevented. In addition, when the clutch mechanism is capable of changing the transmission torque by adjusting the spring force, the spring force urging the clutch plate is small as described above, and therefore the spring that generates the spring force. Can be easily bent,
The spring force (transmission torque) can be adjusted accurately and easily.

Further, as described in claim 2, the speed reducer 3
2 is a planetary gear device, the output of the rotary drive source is input to the sun gear 43 of the planetary gear device 32, and the torque transmission shaft 31 is the planetary gear 4 of the planetary gear device 32.
The sun gear 43 may be revolved around the sun gear 43 to rotate around the torque transmission shaft 31. With this configuration, the rotation of the rotary drive source is decelerated and the torque transmission shaft 3 is rotated with the shaft center of the torque transmission shaft 31 (the revolution shaft center of the planetary gear) and the rotation shaft center of the sun gear aligned.
Can be transmitted to 1. Therefore, even if the speed reducer is provided, the operating mechanism can be made compact.

As the operating mechanism attachment, as described in claim 3, the operating mechanism is provided with the operating mechanism according to claim 1 or 2, and is detachably attached to a general-purpose tool provided with a rotary drive source. By doing so, the output of the rotary drive source of the general-purpose tool can be input to the speed reducer 32 of the general-purpose tool simply by attaching the operation-mechanism attachment to the general-purpose tool such as a drill device or a drill driver device. In addition, the output torque of the general-purpose tool is often a low torque, but the operation mechanism attachment decelerates the rotation of the rotary drive source by the reduction gear 32 and outputs the rotation, and the torque transmission cylinder 30 or the torque transmission cylinder 30 that rotates by the output. Torque transmission shaft 31
Therefore, even if the output of the rotary drive source of the general-purpose tool is low, it is possible to smoothly tighten the male screw member B to the female screw member A and fasten the two or more plate members P. it can.

Further, in the actuating mechanism attachment, when the speed reducer 32 has the input shaft 70 gripped by the chuck mechanism to which the output rotation of the rotary drive source of the general-purpose tool is transmitted, as described in claim 4. The input shaft 70 can be connected to a rotary drive source of a general-purpose tool via a chuck mechanism.

As the working tool, as described in claim 5,
It is characterized by comprising the actuating mechanism according to claim 1 or 2, and further comprising the rotational drive source. The working tool configured as described above employs a rotary drive source that outputs with low torque rotation, so that the working tool can be made compact and lightweight.

Further, the working tool may further include a clutch mechanism 6 for transmitting the output of the rotary drive source to the speed reducer 32. By providing the clutch mechanism 6 in this way, when a torque equal to or higher than a predetermined torque is generated in the male screw member B or the female screw member A, the input from the rotary drive source can be cut off, and the male screw member B or It is possible to prevent the female screw member A from breaking.

Further, in the working tool, as described in claim 7, the clutch mechanism 6 may be constructed so that the transmission torque can be adjusted. By doing so, it is possible to set the rotation (tightening) torque corresponding to the sizes of the male screw member B and the female screw member A.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A working tool according to a first embodiment of the present invention will be described below with reference to the drawings. The special fastening member used by the working tool according to the present embodiment has a flange (hereinafter, referred to as a female screw head) having a polygonal shape in plan view at one end as in the conventional case, and has an inner peripheral surface. Insert the female screw member consisting of a tubular body with a screw formed in the above into two or more stacked plate materials, and tighten the male screw member consisting of a hexagon socket bolt into the female screw member in this state Then, the female screw member is axially deformed to fasten two or more plate members together.

As shown in FIGS. 1 and 2, the working tool according to the present embodiment has a main body 1 in which an electric motor (not shown), which is a rotary drive source, is housed, and the male screw member is connected to the main body 1. B and the female screw member A are relatively rotated and tightened to form an operating mechanism portion 2.

The main body 1 includes a case 3 formed of a tubular body having a substantially T-shape in a side view, the electric motor housed in the case 3, and a drive shaft (not shown) of the electric motor. And a clutch mechanism 6 (described later) connected to the. The upright tubular portion of the case 3 constitutes a handle portion 4 that an operator grips, and a push button type switch 5 is provided on the front surface of the handle portion 4 and an electric motor Is energized to rotate. In the electric motor, the drive shaft is directed toward one end of a tubular portion (hereinafter referred to as drive system interior portion 7) formed in the body 1 in a direction orthogonal to the handle portion 4 inside the drive system interior portion 7. It is decorated in.

The clutch mechanism 6 is provided at one end of the drive system interior portion 7. In the clutch mechanism 6, a flange portion 8 is formed at one end portion, and the flange portion 8 is fitted into one end portion of the drive system interior portion 7 to form a cylindrical base body 9.
A first planetary gear device 10 installed in the flange portion 8 of the base body 9 and an engaging projection 12 formed on one end surface of a first internal gear 11 of the first planetary gear device 10 described later. An engaging ball 13 for engaging with the first internal gear 1
1, a coil spring 14 urged toward one end surface, a pressing body 15 screwed with the other end of the base body 9 to press the coil spring 14, and a rotating direction of the pressing body 15 in the axial direction. It is composed of a rotation adjusting body 16 which is moved to.

The base body 9 has a predetermined distance from one end of the drive system interior portion 7 and is fitted into the drive system interior portion 7 as described above, and one end surface of the flange portion 8. And a threaded cylindrical portion 17 having a screw formed on the outer periphery thereof.

The flange portion 8 has a substantially circular shape in a plan view, and a concave portion 18 having a circular shape in a plan view in which the first internal gear 11 of the first planetary gear device 10 is loosely fitted is formed in the surface direction. . In addition, a hole communicating with the inside of the screw cylinder portion 17 is formed in the center of the bottom portion forming the recess 18.
When the first internal gear 11 is loosely fitted, a portion on the bottom surface of the recess 18 facing the one end surface of the first internal gear 11 is
A plurality of axial through-holes 19 are provided at predetermined intervals in the circumferential direction, and the engaging balls 13 are loosely fitted in the through-holes 19.

The first planetary gear device 10 includes a first sun gear 20 that is connected to a drive shaft of an electric motor and rotates, and an annular first internal gear 11 that is loosely fitted in a recess 18 of the flange portion 8. , And is composed of three first planetary gears 21 which are interposed between the first sun gear 20 and the first internal gear 11 and revolve around the first sun gear 20.

An engaging projection 12 is formed on one end surface of the first internal gear 11 in correspondence with the distance between the through holes 19 formed in the bottom surface of the flange portion 8. The engaging projection 12 has a through hole when the engaging ball 13 loosely fitted in the through hole 19 of the flange 8 is biased by the coil spring 14 toward one side surface of the first gear 11. It is configured to engage with a part of the engaging ball 13 exposed from 19.

Each of the first planetary gears 21 is pivotally attached to a shaft 23 extending from a disc-shaped first connecting member 22. The first connecting member 22 is connected to an input transmission shaft 24 of the actuating mechanism unit 2 described later at the center, and when the first sun gear 20 rotates by the rotation of the electric motor,
When the first planetary gear 21 revolves with respect to the first sun gear 20, the disc-shaped first connecting member 22 is configured to rotate in conformity with the rotation axis of the first sun gear 20. ing. Therefore, the input transmission shaft 24 of the operation mechanism unit 2 also rotates in alignment with the axis of the first sun gear 20.

The coil spring 14 has a spring coefficient and the like so that the pressing force (spring force) can be changed within a predetermined range by moving the engaging ball 13 toward one end surface of the first internal gear 11. The coil spring 14 has one end in contact with the disc 25 so that the engaging ball 13 can be pressed through the donut-shaped disc 25 loosely fitted in the screw cylinder portion 17 in the base body. It is externally fitted to the screw cylinder portion 17 of the No. 9.

The pressing body 15 has a flange-shaped pressing portion 26 formed around the outer periphery of one end, and a cylindrical body having an inner peripheral surface formed with a screw groove for screwing with the screw cylindrical portion 17 of the base body 9. Is. Around the outer circumference of the pressing portion 26, convex locking portions 27 are formed with a predetermined interval. The pressing body 15 thus configured has the other end of the coil spring 14 brought into contact with the pressing portion 26, and the screw cylinder portion 1 of the base body 9 is formed.
It is screwed to 7.

The rotation adjusting body 16 has a cylindrical shape with a bottom, and a hole 28 for inserting the input transmission shaft 24 of the actuating mechanism section 2 is formed at the substantially center of the bottom portion, and the inner peripheral surface thereof is formed. The protrusions 29 are provided at a predetermined interval in the circumferential direction and engage with the locking portions 27 of the pressing body 15. The rotation adjusting body 16 configured in this manner has an opening rotatably fitted into the opening at one end of the drive system interior section 7 coaxially with the drive system insertion section 7.

In the clutch mechanism 6 having the above structure, when the actuating mechanism section 2 is overloaded and the input transmission shaft 24 stops rotating, the revolution of the first planetary gear 21 is blocked and the first planetary gear 21 is prevented. The gear 21 inserts the first internal gear 11 into the recess 18
The first internal gear 11
When the engaging protrusion 12 pushes the engaging ball 13 back into the through hole 19, the first planetary gear 21 rotates, and the first internal gear 11 loosely fitted to the base body 9 by the rotation causes a recess. It is configured so that the rotation of the electric motor is not transmitted to the actuating mechanism section 2 by rotating in the inside 18.

When the rotation adjusting body 16 is rotated around the axis, the clutch mechanism 6 engages with the engaging portion 2 of the pressing body 15.
7 is pressed by the projecting piece 29 of the rotation adjusting body 16, and the pressing body 15
Is moved in the axial direction along the thread groove to compress or decompress the coil spring 14, and the spring force of the coil spring 14 can be adjusted. That is, in the clutch mechanism 6, when the rotation adjusting body 16 is rotated so that the coil spring 14 is largely bent in the axial direction, the engaging ball 13 is rotated.
Is less likely to be pushed back into the through hole 19 and transmits high torque (low torque which is the maximum torque of the electric motor), and when the rotation adjusting body 16 is rotated so that the coil spring 14 approaches the natural length, the engagement is performed. The ball 13 is easily pushed back into the through hole 19 and transmits a low torque.

The actuating mechanism 2 includes a torque transmission cylinder 30 for preventing the female screw member A from rotating and a torque transmission cylinder 3 for the torque transmission cylinder 30.
A torque transmission shaft 31 which is inserted with the axis center aligned with 0 and rotates the male screw member B around the shaft, and a reduction gear which transmits the rotation from the clutch mechanism 6 to the torque transmission shaft 31 It is composed of a planetary gear device 32 and a fixing member 33 for fixing the torque transmission cylinder 30 to the main body 1.

The torque transmission cylinder 30 has a cylindrical socket 34 having a hole shape corresponding to the shape of the female screw head Ah of the female screw member A, and a through hole having a step in the axial direction. A first joint cylinder 35 in which the socket 34 is screwed into an opening of one end of a penetrating hole, and a second joint cylinder to which the first joint cylinder 35 is axially slidably attached and is attached to the fixing member 33. 36, and the socket 34, the first joint cylinder 35, and the second joint cylinder 36 form a continuous hole.

The other end of the first joint cylinder 35 is fitted on one end of the second joint cylinder 36. Further, an axial slit 37 is formed at the other end of the first joint cylinder 35, and a set screw 38 is screwed into one end of the second joint cylinder 36 through the slit 37. One joint cylinder 35 is provided with a rotation stop around the axis and a retainer. Furthermore, the first joint cylinder 35
A coiled spring 39 is loosely fitted between the step inside the hole and the one end surface of the second joint cylinder 36. Even if the first joint cylinder 35 is slid, the first joint cylinder 3
5 is returned to its original position by the restoring force of the spring 39. The second joint cylinder 36 has the other end opening screwed into a mounting fixing portion 48 of the fixing member 33, which will be described later.
The torque transmission cylinder 30 is connected to the fixing member 33.

The torque transmission shaft 31 is formed at one end with a fitting portion 40 formed of a rod body having a hexagonal cross section that fits into a hexagonal hole formed in the male screw head Bh of the male screw member B, and the other end portion. Is a shaft body having a connecting portion 42 which is set to have a larger diameter than the fitting portion 40 and is connected to the output shaft 41 of the second planetary gear device 32. A coupling hole (not shown) having a square cross section in the axial direction is formed in the end surface of the coupling portion 42.

The second planetary gear device 32 is fitted into the second sun gear 43 formed at one end of the input transmission shaft 24 connected to the first connecting member 22 of the clutch mechanism 6 and the fixing member 33. And an annular second internal gear 44, and three second planetary gears 45 that are interposed between the second sun gear 43 and the second internal gear 44 and revolve around the second sun gear 43. Has been done.

Each of the second planetary gears 45 is pivotally attached to a shaft 47 extending from a disc-shaped second connecting member 46. The second connecting member 46 is used for the torque transmission shaft 3
The output shaft 41 connected to the first connecting portion 42 extends in the center of the second connecting member 46. One end of the output shaft 41 has a rectangular shape corresponding to the shape of the connecting hole of the torque transmitting shaft 31, and is fitted into the connecting hole of the torque transmitting shaft 31. Therefore, when the second sun gear 43 rotates by the rotation of the electric motor via the input transmission shaft 24, the torque transmission shaft 31 and the output shaft 41 are rotated by the second planetary gear 45 with respect to the second sun gear 43. By revolving, the disc-shaped second connecting member 46 is configured to rotate in conformity with the rotation axis of the second sun gear 43.

The fixing member 33 has the second internal gear 44.
A bottomed cylindrical mounting and fixing portion 48 that is screwed into the other end of the second joint cylinder 36 in a state where the inside of the mounting joint is installed, and a pair of mounting connecting portions extending from the outer peripheral end of the bottom of the mounting and fixing portion 48. 49 and a fastening portion 50 that is connected to one end of the pair of attachment connecting portions 49 and fastens around the outer periphery of the drive system interior portion 7 of the main body 1.

A hole through which the input transmission shaft 24 is inserted through a bearing 51 is bored at a substantially central portion of the bottom of the mounting / fixing portion 48.

The pair of attachment connecting portions 49 are provided so as to face each other, and the rotation adjusting body 16 of the clutch mechanism 6 in the state where the operation mechanism portion 2 is attached to the main body 1.
Is partially exposed between the attachment connecting portions 49. That is, between the pair of attachment coupling portions 49, the transmission torque of the clutch mechanism 6 can be adjusted by directly rotating the rotation adjusting body 16 from the outside without using a special tool or removing the operating mechanism portion 2. To form the window 52.

The fastening portion 50 is formed by bending a strip-shaped thin plate so as to correspond to the outer peripheral shape of the drive system interior portion 7. One end of the fastening portion 50 is connected to the pair of attachment couplings. Part 4
It is joined to one end of 9. The fastening portion 50 configured as described above is configured to be fastened to the drive system interior portion 7 by fastening both ends in the longitudinal direction with screw members.

In order to fasten two or more plate members P with the male screw member B and the female screw member A using the working tool having the above-described structure, a hole penetrating the two or more plate members P stacked together is punched. Then, the female screw member A in which the male screw member B is screwed is inserted into the hole. Then, the socket 34 of the torque transmission cylinder 30 of the working tool is fitted into the female screw head Ah of the female screw member A to engage the socket 34 (one end of the torque transmission cylinder 30) with the female screw head Ah. , The fitting portion 40 of the torque transmission shaft 31 is fitted into the hexagonal hole formed in the male screw head Bh of the male screw member B, and the fitting portion 40 (one end of the torque transmission shaft 31) and the hexagonal hole (male screw head). Bh) is engaged. When switch 5 is pressed in this state, the electric motor is energized,
The rotation of the electric motor is transmitted to the input transmission shaft 24 of the second planetary gear device 32 via the clutch mechanism 6, and the input transmission shaft 2 is driven by the reduction ratio of the second sun gear 43 and the second planetary gear 45.
4 is reduced in speed, and the output shaft 41 and the torque transmission shaft 3
1 rotates, the male screw member B is tightened with respect to the female screw member A, and when a predetermined or more axial force is generated in the female screw member A, the female screw member A is deformed in the axial direction, and two or more sheets are stacked. The plate material P is fastened.

As described above, in the working tool according to the present embodiment, even if the electric motor outputs a low torque, the second planetary gear unit 32, which is a speed reducer of the working mechanism section 2, is used.
The torque obtained by the output shaft 41 (torque transmission shaft 31) of can be made high torque in proportion to the reduction ratio of the second planetary gear device 32. Therefore, an electric motor that outputs with low torque can be employed as a rotary drive source.

Further, since the rotational torque of the rotation input to the actuating mechanism section 2, that is, the rotational torque of the rotation transmitted by the clutch mechanism 6 is a low torque like the rotation of the electric motor, the rotation of the low torque is transmitted. The clutch mechanism 6 that operates is sufficient and does not require a clutch mechanism that transmits high torque rotation. Therefore, the coil spring 14 for pressing the engagement ball 13 has a small spring coefficient (small spring force).
Therefore, it is possible to prevent the engagement protrusion 12 and the engagement ball 13 formed on the first internal gear 11 from being worn. Further, for the above reason, since the coil spring 14 of the clutch mechanism 6 has a small spring force, the rotation adjusting body 16 can be easily rotated and the transmission torque can be accurately adjusted.

The working tool provided with the working mechanism of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

In this embodiment, a planetary gear unit is used as the speed reducer 32 of the actuating mechanism section 2.
Is not limited to a planetary gear device, but one that can reduce the number of revolutions by combining two or more gears, or a chain that spans a sprocket with a different diameter to output the rotation output from a rotary drive source. Various types can be adopted, such as one that decelerates, or one that hangs a belt around rollers having different diameters to decelerate the rotation output from the rotary drive source.

Further, in the present embodiment, the output of the speed reducer is transmitted to the torque transmission shaft 31, but the rotation of the torque transmission shaft 31 is restricted so that the output of the speed reducer of the torque transmission cylinder 30 is transmitted. May be. In this case, for example, a gear is formed around the outer circumference of the other end of the second joint cylinder 36 in the torque transmission cylinder 30, and rotation from the clutch is formed in the second joint cylinder 36 by a gear having a diameter smaller than that of the gear. It may be transmitted to a gear.

Further, the torque transmission cylinder 30 in this embodiment is composed of the socket 34, the first joint cylinder 35 and the second joint cylinder 36.
They may be integrally configured.

Further, as the clutch mechanism 6 in the present embodiment, the engaging projection 12 of the first internal gear 11 of the first planetary gear device 10 is formed, and the engaging projection 12 and the engaging ball 13 are formed.
A structure in which the engagement ball 13 is pressed by the coil spring 14 so as to be engaged with is adopted, but the clutch mechanism 6 is not limited to this structure, and for example, a clutch plate having a surface with a high friction coefficient is used. Alternatively, the clutch plate is provided with one or more pairs of clutch plates having protrusions, and the spring force is applied to the clutch plates with the surfaces having high friction coefficients or the faces having protrusions facing each other. You can have it. Also in this case, the clutch mechanism 6 having a small spring force can be adopted as in the present embodiment. Therefore, in the case of the clutch mechanism 6 which adjusts the transmission torque by adjusting the spring force, the transmission torque can be adjusted accurately and easily as in the present embodiment.

Further, the working tool according to the present embodiment is provided with the clutch mechanism 6 which mechanically cuts off the rotation of the electric motor when a large load is applied to the torque transmission shaft 31.
The working tool includes a clutch mechanism 6 that mechanically cuts off the rotation.
However, the rotation of the electric motor is directly transmitted to the input shaft (the input transmission shaft 24 having the sun gear formed in the present embodiment) of the speed reducer of the operating mechanism 2. It may be configured as. In this case, it is preferable to have a circuit configuration that electrically detects an overload and stops the rotation of the electric motor.

Furthermore, in the present embodiment, the electric motor is adopted as the rotary drive source, but the rotary drive source is not limited to the electric motor, and may be an air motor or a hydraulic motor. It goes without saying that even those motors that output low torque are adopted.

Next, an operation mechanism attachment according to a second embodiment of the present invention will be described with reference to the drawings.
In addition, the actuation mechanism attachment according to the present embodiment,
The configuration different from the actuation mechanism portion 2 of the actuation tool according to the first embodiment is the shaft provided with the sun gear of the planetary gear device that is a speed reducer and the shape of the fixing member 33. Since it has substantially the same configuration as that of the working mechanism section 2 of the working tool, reference numerals used in the description of the working mechanism section 2 of the working tool will be used for the same configuration as the working mechanism section 2 of the working tool. The description is omitted by assigning the same reference numerals to, and only the configuration different from that of the operation mechanism portion 2 of the above-described operation tool will be described.

FIG. 3 shows the same structure as the electric motor of the working tool and the clutch mechanism 6, and of the shaft (corresponding to the input transmission shaft 24) connected to the first connecting member 22 of the clutch mechanism 6. FIG. 6 is a state diagram in which an operation mechanism attachment according to the present embodiment is attached to a general-purpose tool having a chuck mechanism connected to one end thereof.

The second sun gear 43 according to this embodiment is
Input shaft 70 gripped by the chuck mechanism C of the general-purpose tool
Is formed at one end of the. The input shaft 70 has a hexagonal cross section as a rotation stopper when it is gripped by the chuck mechanism C.

In the fixing member 33 according to this embodiment, the other end and one end of the second joint cylinder 36 are screwed together with the second internal gear 44 of the second planetary gear device 32, which is a speed reducer, installed therein. Cylindrical mounting and fixing portion 48, and the mounting and fixing portion 4
8 and a pair of attachment connecting portions 49 extending from the other end, and a fastening portion that is connected to one end of the pair of attachment connecting portions 49 and is fastened to the main body H near the rotation adjusting body 16 of the clutch mechanism of the general-purpose tool. It is composed of 50 and.

The mounting and fixing portion 48 is a cylindrical body having an inner diameter capable of rotatably mounting the chuck mechanism C of general-purpose tools of various manufacturers, and the partition portion 71 is formed at a predetermined depth from the other end opening. Has been done. A hole 7 through which the input shaft 70 is inserted through the bearing 51 is provided at a substantially central portion of the partition portion 71.
2 is perforated, and the input shaft 70 has a mounting and fixing portion 4
8, the second sun gear 43 is inserted into the hole of the partition part 71 so that the second sun gear 43 is located in the state of being engaged with the second planetary gear 45, and It is located on the edge side.

The pair of attachment connecting portions 49 are provided so as to face each other, and the window 5 is provided between the pair of attachment connecting portions 49.
2 is formed. That is, with the operating mechanism attachment attached to a general-purpose tool,
A part of the rotation adjusting body 16 of the clutch mechanism of the general-purpose tool is configured to be exposed between the attachment connecting portions 49.

The fastening portion 50 is formed by bending a strip-shaped thin plate so as to correspond to the outer peripheral shape of the main body 1 near the rotation adjusting body 16 of the clutch mechanism of a general-purpose tool.
One side end of 0 is joined to one end of each of the pair of attachment connecting portions 49. Fastening part 5 configured in this way
0 is configured to be fastened to the main body 1 of a general-purpose tool by fastening both ends in the longitudinal direction with screw members.

The work mechanism attachment according to the present embodiment transmits the torque transmission shaft 31 by decelerating the output of the rotary drive source through the second planetary gear device 32 (reduction gear), like the operation tool. Therefore, even if the output of the rotary drive source of the general-purpose tool has a low torque, it is possible to obtain a high torque tightening torque required when tightening the male screw member B to the female screw member A. Further, the output torque of the general-purpose tool is generally low torque, but according to the actuation mechanism attachment according to the present embodiment, it can be attached to general-purpose tools of various manufacturers without being restricted by the output of the general-purpose tool. it can.

Further, in the actuating mechanism attachment according to the present embodiment, the fixing member 33 and the input shaft are configured as described above, so that the chuck mechanism C of the general-purpose tool has the input shaft 70.
When gripping the
Since the rotary body (chuck mechanism C) is located inside, it is possible to prevent the rotary body (chuck mechanism C) from being exposed to the outside, and it is possible to prevent a dangerous situation such as clothes of an operator being wrapped around the rotary body.

Further, since the window 52 is formed between the pair of attachment connecting portions 49, when the general-purpose tool has the clutch mechanism for adjusting the transmission torque from the outside as in this embodiment, the actuation mechanism 2 attachment is used. Without removing
The transmission torque of the clutch mechanism can be adjusted by directly rotating the rotation adjusting body 16 from the outside.

The actuating mechanism attachment provided with the actuating mechanism according to the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention. .

In the present embodiment, the fixing member 33 is provided with the pair of attachment connecting portions 49, but a general-purpose tool for attaching the actuation mechanism attachment does not have the rotation adjusting body 16 for adjusting the transmission torque from the outside. Therefore, it is not always necessary to provide the attachment connecting portion 49, and the attachment fixing portion 4
8 may be connected to the fastening portion 50. Also in this case, it is preferable that the fixing member 33 has a structure capable of incorporating the chuck mechanism C therein. Therefore, the shape of the fixing member 33 can be variously changed according to the type of general-purpose tool.

[0067]

As described above, as an effect of the present invention, a female screw member provided with a speed reducer for decelerating the rotation of the rotary drive source, and the output of the speed reducer is inserted into two or more stacked plate members. Of the male screw head of the male screw member threadedly fitted to the female screw member, and the one end of which is engaged with the female screw head of Since the torque is transmitted to either one of the torque transmission shafts, a high torque can be obtained by the torque transmission cylinder or the torque transmission shaft. It is possible to fasten the female screw member with high torque and deform the female screw member in the axial direction to fasten the plate members together.

Accordingly, even if the rotation of the rotary drive source is configured to be transmitted to the torque transmission cylinder or the torque transmission cylinder via the clutch mechanism, the clutch mechanism does not need to transmit high torque. It is possible to prevent a situation in which the clutch plate or the like is severely worn even if slippage occurs during overload.

Even when the clutch mechanism has a structure in which the pair of clutch plates are engaged by the biasing force of the spring and the transmission torque can be adjusted by adjusting the biasing force, the clutch mechanism is Since it is sufficient to transmit the rotation with low torque as described above, the biasing force of the spring is small, and the transmitted torque can be adjusted easily and accurately.

[Brief description of drawings]

FIG. 1 shows an overall view of a working tool according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional side view of an operating mechanism portion and a clutch mechanism of the operating tool according to the same embodiment.

FIG. 3 is an overall view including a partial cross section when an actuating mechanism attachment according to a second embodiment of the present invention is attached to a general-purpose tool.

[Explanation of symbols]

1 ... Main body, 2 ... Operating mechanism (operating mechanism), 3 ... Case,
4 ... Handle part, 5 ... Switch, 6 ... Clutch mechanism, 7
... drive system interior part, 8 ... flange part, 9 ... base body, 10
... first planetary gear device, 11 ... first internal gear, 12 ... engaging projection, 13 ... engaging ball, 14 ... coil spring, 15 ... pressing body, 16 ... rotation adjusting body, 17 ... screw cylinder, 18 ... Recess,
Reference numeral 19 ... Through hole, 20 ... First sun gear, 21 ... First planetary gear, 22 ... First connecting member, 23 ... Shaft, 24 ... Input transmission shaft, 25 ... Disc, 26 ... Pressing portion, 27 ... Locking Department, 28 ...
Hole, 29 ... Projection piece, 30 ... Torque transmission cylinder, 31 ... Torque transmission shaft, 32 ... Second planetary gear device, 33 ... Fixing member, 34
... socket, 35 ... first joint cylinder, 36 ... second joint cylinder, 37 ... slit, 38 ... set screw, 39 ... spring, 40 ... fitting portion, 41 ... output shaft, 42 ... connecting portion, 43
... second sun gear, 44 ... second internal gear, 45 ... second planetary gear, 46 ... second connecting member, 47 ... shaft, 48 ... mounting fixing part, 49 ... mounting connecting part, 50 ... fastening part, 51 ... Bearing, 52 ... Window, 70 ... Input shaft, 71 ... Partition, 72 ... Hole

Claims (7)

[Claims] 1. A female screw head (A) of a cylindrical female screw member (A) inserted through two or more superposed plate members (P).
h), one end of which is engaged with the torque transmission cylinder (30), and the torque transmission cylinder (30) is inserted with its axis substantially aligned.
A torque transmission shaft (31) for engaging one end with a male screw head (Bh) of a male screw member (B) screwed into the female screw member (A), and the torque transmission cylinder (30) Alternatively, the torque from the rotary drive source is transmitted to at least one of the torque transmission shafts (31) to relatively rotate the torque transmission cylinder (30) and the torque transmission shaft (31) about the axial center, and the female screw An operating mechanism for fastening the male screw member (B) to the member (A) to axially deform the female screw member (A) to fasten the two or more plate members (P),
A reduction gear (32) for reducing and outputting the output rotation speed of the rotary drive source is provided, and the output rotation of the reduction gear (32) is either the torque transmission cylinder (30) or the torque transmission shaft (31). An actuating mechanism characterized in that it is configured to be transmitted to. 2. The speed reducer (32) comprises a planetary gear device, and the output of the rotary drive source is the planetary gear device (3).
2) is input to the sun gear (43) and the torque transmission shaft (31) is the planetary gear (45) of the planetary gear device (32).
The actuating mechanism according to claim 1, wherein the actuating mechanism is configured to rotate around the axis of the torque transmission shaft (31) by the revolution of the sun gear (43). 3. An actuating mechanism attachment comprising the actuating mechanism according to claim 1 or 2 and being detachably attached to a general-purpose tool having a rotary drive source. 4. The actuation mechanism attachment according to claim 3, wherein the speed reducer (32) includes an input shaft (70) gripped by a chuck mechanism to which output rotation of a rotary drive source of the general-purpose tool is transmitted. . 5. An operating tool comprising the operating mechanism according to claim 1 and further comprising the rotary drive source. 6. The output of the rotary drive source is set to the speed reducer (3
6. The working tool according to claim 5, further comprising a clutch mechanism (7) for transmitting to 2). 7. The working tool according to claim 6, wherein the clutch mechanism (7) is configured so that the transmission torque can be adjusted.