JPH08229839A - Screw fastening/loosening device - Google Patents

Abstract

PURPOSE: To provide a screw fastening/loosening device easily engaged with two screw-fitted members to be fastened/loosened and setting a rotatory- operating member easily to a body part. CONSTITUTION: A body part 1 is provided with a right frame body 11, a left frame body 12, a cylindrical supporting part 3 with ratchet mechanism, and a cylinder 4. The right frame body 11 is provided with a body engaging part 14 bored so as to be engaged with the head or the like of a bolt screwed with a nut. The inside of the cylinder of the supporting part 3 forms a fitting insert part 31 so as to fittingly insert a rotatory-operating member 2 rotatably and slidably in the axial direction. With this supporting part 3 rotatably fitted being communicated with the body engaging part 14 of the right frame body 11, the nut can be disposed in the fitting insert part El by engaging the bolt with the body engaging part 14, for instance, and the rotatory-operating member 2 can be fittingly inserted in the fitting insert part 31 while being engaged with the nut. The rotatory-operating member 2 fittingly inserted in the fitting insert part 31 is locked to the supporting part 3 by the ratchet mechanism and rotated in one direction in association with the rotation of the supporting part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows two nuts to be tightened such as a bolt and a nut, or nuts screwed to a bolt or the like, and a pipe and a joint to be engaged at the same time, and The present invention relates to an improvement of a screw tightening / loosening device used for tightening or loosening a member to be tightened with respect to a member to be tightened on the other side.

[0002]

2. Description of the Related Art For example, when tightening or loosening a nut with respect to a bolt and the bolt is not fixed,
Alternatively, when the two nuts are tightened together, rotating only one side causes the other to rotate with it. In that case, for example, it may be considered that two spanner members are connected by a support member, these nuts are simultaneously engaged with two juxtaposed nuts, and one spanner member mechanically rotates the other spanner member. However, it is rare that the hexagonal parts formed on the outer circumference of the two nuts are in the same direction position in most cases, and in most cases, they are arranged in different arbitrary direction positions. The engaged portions cannot be engaged with the outer circumferences of the two nuts at the same time. Therefore, the applicant of the present invention discloses, in order to solve the above problems, in Japanese Patent Application No. 5-75929, for example, that the bolts and nuts screwed together are always simultaneously simultaneously irrespective of the direction positions of the hexagons. An engaged device was proposed. As shown in FIG. 13, this tightening device includes a body portion a,
And a rotation operation member b for rotating the nut,
Further, a body engaging portion c capable of engaging with the head portion of the bolt is provided on one end side of the body portion a, while the rotating operation member b has an operating member engaging portion having a tip engaged with the outer circumference of the nut. b1 is provided and a curved pressing member b2 connected by a ratchet mechanism is attached to the rear end. Then, when tightening the bolt and the nut, the head portion of the bolt is engaged with the main body engaging portion c of the main body portion a, and then the rotation operation member b.
Is engaged with the outer circumference of the nut screwed to the bolt. In that state, the rotation operating member b is provided along the other end side of the main body a, and the retaining pin d is rotatably attached so as not to be inserted into the loose fitting groove b3 provided in the rotation operating member b. By moving the cylinder e provided in the main body part a, the piston of the cylinder e presses the end portion of the pressing member b2 to move it. As a result, the ratchet mechanism causes the rotating operation member b to be pressed by the pressing member b2 to rotate. Further, when the turning operation member b is turned, the piston is returned to the original position and the pressing member b2 is manually pushed against the turning operation member b in the piston direction. As a result, the pressing member b2 is moved by the ratchet mechanism with respect to the rotating operation member b only in the pressing member b2 in the direction of the piston, and can be pressed by the piston again. Similarly, the pressing member b2 is rotated by pressing the pressing member b2 by the piston. The operation member b can be rotated. However,
Since the ratchet mechanism is provided at the rear end of the turning operation member b and the curved pressing member b2 is attached, the entire turning operation member b is heavy and bulky. Therefore, when attaching the rotation operating member b to the main body a,
It is difficult to operate the turning operation member b, and it becomes difficult to attach the turning operation member b. In particular, when the work site is narrow, it is not easy to attach the large and heavy turning operation member b to the main body a. In addition, the turning operation member b and the main body a must be supported by hand so as not to come off, and the detent pin d must be used to prevent the disengagement, which is a troublesome operation.

On the other hand, when a tubular joint is fastened to a pipe, for example, a pipe wrench is used. However, even with a pipe wrench, it is easy to slip around the outer circumference of the pipe, and especially when both the pipe and the joint are not fixed, two pipe joints are used. It must be done with a pipe wrench and is extremely difficult. Further, in that case, for example, a device in which the above-mentioned device is used and a clamp member capable of clamping a pipe and a joint is provided in each of the main body engaging portion c and the nut engaging portion b1, is also conceivable.
Since the pipe rotates in the axial direction while rotating with respect to the joint, the pipe cannot be rotated with respect to the joint even by clamping.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and is capable of easily engaging both of two screw-fastened members to be tightened and loosened, so that the turning operation member can be attached to the main body. A first object of the present invention is to provide a screw tightening / loosening device that can be easily set in the machine. A second object of the present invention is to provide a screw tightening / loosening device that can be easily engaged with both a bolt and a nut screwed together with a screw, or two nuts screwed into the bolt and can be tightened or loosened with respect to each other. To aim. A third object of the present invention is to provide a screw tightening / loosening device that can be easily engaged with both a screw-threaded pipe and a tubular joint, and can be tightened or loosened with respect to each other.

[0005]

Means for Solving the Problems Two non-rotatable members to be screwed together are engaged with each other in a non-rotatable manner, and both members are pivoted in relatively opposite directions, so that one side with respect to the other side. The present invention solves the above-mentioned problems by providing a screw tightening device having the following features in a screw tightening device that is tightened or loosened. The screw tightening / releasing device of the first invention of the present application is provided with a main body portion 1 and a rotating operation member 2 for rotating the member to be tightened on one side with respect to the member to be tightened on the other side. The rotating operation member 2 includes an operation member engaging portion 21 that can engage with the outer periphery of the tightened member on one side.
The other end of the main body 1 is provided with a main body engaging portion 14 that can be engaged with the outer periphery of the other member to be fastened, and the one end has a cylindrical support for supporting the turning operation member 2. A section 3 is provided. Then, the inside of the cylinder of the support portion 3 forms a fitting insertion portion 31 into which the rotation operation member 2 can be pivotally and axially slidably fitted from one end side, and communicates with the main body engaging portion 14 of the main body portion 1. As a result, the two tightened members to be screwed are simultaneously engaged with the main body engaging portion 14
And the operation member engaging portion 21 of the rotation operation member 2 is arranged on the fitting insertion portion 31 side in accordance with the insertion into the fitting insertion portion 31. It is adapted to be engaged with the member to be tightened on one side. The support portion 3 is provided with locking mechanisms 23 and 52a capable of locking the fitted rotary operation member 2 and the support portion 3 in a non-rotatable manner. Further, since the support portion 3 is rotatably disposed on the main body portion 1, the rotation operation member 2 fitted into the fitting insertion portion 31 in the locked state between the rotation operation member 2 and the support portion 3. Is rotated together with the support portion 3. The two screw-fastened members to be tightened according to the invention of the present application include a nut provided on a bolt or the like by screwing and a nut screwed on the bolt or the like.

In the second screw tightening / loosening device of the present application, the operating member engaging portion 21 of the turning operation member 2 according to the first invention of the present application is fitted into the outer circumference of the head of a hexagonal nut or bolt. Since the operation member engaging hole 21 is formed in the axial direction from the one end surface side, the head portion of the nut or the bolt can be engaged with the operation member engaging hole 21. The rotation operation member 2 is adapted to be fitted into the fitting insertion portion 31 from one end side of the fitting insertion portion 31 while engaging the operation member engaging hole 21 and the outer periphery of the nut or the like. is there.

In the third screw tightening / loosening device of the present application, the turning operation body 2 according to the first invention of the present application is inserted into the fitting insertion portion 31 of the support portion 3, and the rotation operation main body portion 320 and the operation member assembly. Joint part 21
And a pipe fixing member 330 having The pipe fixing member 330 is provided with pipe holding means 333 and 334 as an operation member engaging portion, so that the pipe can be held. Further, the pipe fixing member 330 is non-rotatably and slidably connected to the turning operation body 320, so that the pipe is held as the turning operation body 320 is rotated by the support portion 3. The pipe fixing member 330 is configured to be rotatable with the rotation operation body 320 while sliding the rotation operation body 320 toward the body engagement portion 14 side of the body 1.

[0008]

In the first aspect of the present invention, by simply operating the rotary operation member 2 within the fitting / inserting portion 31, the tightening / releasing member and the operating member engaging portion on one side arranged on the fitting / inserting portion 31 side. 21 can be easily engaged. At that time, the operation member engaging portion 2 capable of engaging the rotation operation member 2 with the outer periphery of the one-side tightened member.
Since only one is provided, it becomes compact, and the operation of inserting it in the inserting portion 31 can be easily performed. On the other hand, after the turning operation member 2 is fitted into the fitting portion 31, the locking mechanisms 23 and 52a of the support portion 3 cause
The rotation operation member 2 and the support portion 3 can be brought into a locked state, and when the support portion 3 is rotated, the rotation operation member 2 fitted in the fitting insertion portion 31 can be rotated together therewith. As a result, the turning operation member 2 can be turned with respect to the main body portion 1, and the tightening / releasing member on one side engaged with the operation member engaging portion 21 of the turning operation member 2 is attached to the main body engaging member. It is possible to tighten or loosen the member to be tightened on the other side engaged with the joint portion 14.

Further, in the second aspect of the present invention, the operating member engaging portion 21 of the rotary operating member 2 can be engaged by fitting the operating member engaging portion 21 to the head of the nut N or the bolt.
For example, when the bolt N and the nut N are engaged with each other by engaging the bolt head with the main body engaging portion 14 of the main body portion 1, the nut N is fitted into the fitting insertion portion 31. It can be coordinated in the insertion part 31. Then, from that state, the operation member engagement portion 21 of the rotation operation member 2 is inserted into the fitting insertion portion 31.
If it is rotated in the circumferential direction so as to fit the outer periphery of the nut N in the inside and aligned and fitted into the fitting insertion portion 31 from the other end side of the fitting insertion portion 31, the operation member is naturally engaged with the insertion. The outer periphery of the nut N can be fitted into and engaged with the portion 21. or,
The turning operation member 2 can be easily manufactured by forming the operation member engaging hole 21, and those suitable for various nuts having different sizes can be easily prepared in advance.

On the other hand, according to the third aspect of the present invention, the rotation operation member 2 is not rotatable with respect to the rotation operation main body portion 320 which is fitted into the fitting insertion portion 31 of the support portion 3 and the rotation operation main body portion 320. And a pipe fixing member 330 having an operating member engaging portion 21 slidably connected thereto, and the operating member engaging portion 21 of the pipe fixing member 330 is provided with pipe holding means 333, 334. , The turning operation member 2 is the pipe P
Shall be able to hold. Thereby, for example, the pipe P
It is possible to engage the joint G screwed in with the main body engagement portion 14 of the main body portion 1 and engage the outer periphery of the pipe P with the operation member engagement portion 21 of the pipe fixing member 330. When the pipe P is rotated with respect to the joint G by the pipe fixing member 330,
At the same time, the pipe P tries to move in the axial direction, but the pipe fixing member 330 engaged with the pipe P in accordance with the movement.
Slides in the rotation operation body 320 in the axial direction, so that the pipe P can be smoothly rotated with respect to the joint G.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a nut tightening / loosening device according to a first embodiment of the present invention.

The screw tightening / loosening device of the first embodiment is a nut tightening / loosening device, and a nut screwed to a bolt or pipe having a male screw engraved thereon can be rotated. It is a thing. The nut tightening / loosening device 1 includes a main body 1 and a rotating operation member 2 for rotating the nut with respect to a bolt or the like.

The main body 1 includes a right frame body 11 and a left frame body 12.
And a support portion 3 for supporting the rotation operation member 2, and an operation portion 4 for rotating the support portion 3. The right frame body 11 and the left frame body 12 are both formed of a plate-like body, and are arranged in parallel in the left part and the right part via a bush 13 having a predetermined length, with an interval corresponding to the length of the bush 13 therebetween. The support section 3 and the operation section 4 can be housed in the meantime. Right frame 11
A body engaging portion 14 is provided on the upper side of the. The main body engaging portion 14 is for engaging with the head of a bolt screwed with a nut, the outer circumference of a rod-shaped body with an engraved male screw, or the outer circumference of another nut provided on the bolt by screwing. In this embodiment, it is formed in a shape that can be engaged by being fitted into the head of a hexagonal bolt or the like. Further, on the upper side of the main body engaging portion 14,
The right frame 1 with a width that allows the head of the bolt to be engaged to pass through
1 is provided with an opening 14a opened from the upper surface, and the main body engaging portion 14 is provided on the outer circumference of the head of the bolt or the like through the opening 14a in the radial direction (side perpendicular to the axial direction). It is designed so that they can be fitted and engaged with each other. Further, a fitting groove 15 is provided on the left side surface of the right frame body 11 on the peripheral portion of the main body engaging portion 14. The fitting groove 15 is formed in a circular shape centering on the axis of the main body engaging portion 14 and having a predetermined width.

On the other hand, on the upper side of the left frame body 12, there is provided a support portion fitting insertion hole 16. Further, the support portion fitting / inserting hole 16 is provided with an opening portion 16a opened from the upper end side with a width that allows the outer periphery of the nut to pass therethrough.

The support portion 3 is formed of a substantially cylindrical shape. An inner peripheral portion of the support portion 3 forms a fitting insertion portion 31 into which the turning operation member 2 is inserted, and has a size such that the turning operation member 2 can be fitted therein. The left end surface side of the fitting / inserting portion 31 forms an inlet / outlet opening 31b, and the turning operation member 2 can be inserted into or removed from the inserting / inserting portion 31 through the inlet / outlet opening 31b. Furthermore, an opening 31a is provided in an upper portion of the fitting insertion portion 31 and has a width that allows the nut to pass from the left end side to the right end side. The nut 31 can be inserted into the fitting insertion portion 31 through the opening 31a. Has been done. On the right side of the outer peripheral portion of the support portion 3, a groove fitting portion 32 that is rotatably fitted into the fitting groove 15 of the right frame 11 is provided. On the other hand, on the left end side of the outer peripheral portion of the support portion 3, a frame body fitting portion 33 that is rotatably fitted into the support portion fitting insertion hole 16 of the left frame body 12 is provided. Then, the groove fitting portion 32 of the support portion 3 is connected to the fitting groove 1 of the right frame body 11.
5, the left frame 1 is attached to the frame fitting portion 33.
The bush 13 is provided in a state where the second support portion fitting hole 16 is fitted and the right frame body 11 and the left frame body 12 are fixed by the bolt 17 and the nut 18. Bush 1
3, four bolts 17 and four nuts 18 are provided at each of the four corners of both the right frame body 11 and the left frame body 12, but in FIG. 1, only one is shown and the others are omitted. ing.
In this way, the support portion 3 includes the right frame body 11 and the left frame body 12
And is supported so as to be rotatable in the circumferential direction along the sliding groove 15 of the right frame body 11. Further, in the supported state, the fitting insertion portion 31 and the main body engagement portion 14 are communicated with each other with their axes aligned, and the opening 31 of the support portion 3 is provided.
The opening 14a of the right frame 11 and the opening 16a of the left frame 12 are aligned in the normal state.

A large diameter portion 34 is provided between the groove fitting portion 32 and the frame fitting portion 33 in the support portion 3. The large diameter portion 34 is made larger in diameter than the groove fitting portion 32 and the frame body fitting portion 33, and when the large diameter portion 34 is arranged between the left frame body 12 and the right frame body 11, the left frame body 12 and the right frame body 12 are It is configured so as to come into contact with both inner side surfaces of the frame body 11 so as not to come off from the operation portion fitting insertion hole 16 of the left frame body 12 or the main body engaging portion 14 of the right frame body 11. On the other hand, the thickness of the large diameter portion 34 is smaller than the length of the bush 13 described above. Further, a drive attachment portion 34a for attaching the drive portion 4 is provided at a lower end portion on the rear side of the large diameter portion 34.

The large-diameter portion 34 of the support portion 3 is engaged with the rotary operation member 2 fitted in the fitting portion 31, and is rotated relative to the support portion 3 only in one circumferential direction. The ratchet mechanism parts 5 and 5 for dynamic operation are provided. The ratchet mechanism parts 5 and 5 in this embodiment are the large diameter part 3 of the support part 3.
No. 4 is provided at two positions, a front part and a rear part. Both of them have the same configuration, and as shown in FIG. 2, a claw member 52 disposed in a through hole 51 penetrating from the outer peripheral surface of the large diameter portion 34 of the support portion 3 to the inner peripheral surface thereof, and a claw member. It is composed of a biasing member 53 for biasing 52 and a lid member 54.
Hereinafter, the right side in FIG.
Direction) will be described based on FIG.

The claw member 52 has a predetermined thickness and has a substantially triangular shape in a side view. Engaging teeth 52a composed of a plurality of teeth are provided on the entire left side surface. Each tooth in this example has a module of 0.6 and a peak height of 0.8.
It is formed in mm. Further, on the front side surface on the front side, a step portion 52b is formed near the engaging tooth 52a along the engaging tooth 52a. In this step portion 52b, the claw member 52 is the support portion 3
The through hole 5 of the support portion 3 is provided to prevent the support portion 3 from coming off from the through hole 51 of the support portion 3.
The retaining pin 51a, which is provided on the lower side in the inside of the device 1, abuts on the retaining pin 51a. On the other hand, a claw guide member 55 is provided on the upper surface. The claw guide member 55 is for rotating the claw member 52 in the up-down direction (X-Y direction), and has a lower spherical surface portion 55a and an upper flat surface portion 55b. The flat surface portion 55b of the claw guide member 55 is along the inner upper wall 51a of the through hole 51 of the support portion 3, while the spherical surface portion 55 is provided.
Part of a is fitted in the spherical surface fitting hole 56 formed on the front side surface of the claw member 52, and the inner peripheral surface of the spherical surface fitting hole 56 slides along the outer periphery of the spherical surface portion 55a. The claw member 52 rotates in the XY direction with respect to the claw guide member 55.

Then, the claw member 52 thus formed
Are put into the through holes 51 of the support portion 3 from the outer peripheral side of the support portion 3. In the claw member 52 housed in the through hole 51, only the height of the approximately crest of the engaging tooth 52a of the claw member 52 corresponds to the support portion 3.
The stepped portion 52b abuts on the retaining pin 51a in a state of protruding to the inner peripheral surface of, and further movement of the support portion 3 to the inner peripheral surface side is prevented. As a result, as shown in FIG. 3, the engaging teeth 52a are formed on the inner peripheral surface of the support portion 3 toward the right side of the center of the left and right sides.
Protrudes. Further, the flat surface portion 55b of the claw guide member 55 abuts on the inner upper wall 51a of the through hole 51 and slides along the inner upper wall 51a, so that the entire claw member 52 slides in the through hole 51 in a substantially horizontal direction. The claw member 52 is movable, and the claw member 52 rotates with respect to the claw guide member 52b.
Are arranged in the through hole 51 so as to be rotatable in the XY directions.

The lid member 54 is attached to the support portion 3 so as to close the through hole 51 of the support portion 3 from the outer peripheral side so that the claw member 52 put in the through hole 51 does not come out.
On the other hand, the biasing member 53 is composed of a coil spring 53 and is disposed between the lid member 54 and the claw member 52 in the through hole 51, and always biases the claw member 52 toward the inner peripheral side of the through hole 51. The engaging teeth 52a of the claw member 52 are always maintained in a state of protruding to the inner peripheral surface of the support portion 3.

Returning to FIG. 1 and continuing the explanation, the operation unit 4
Is a cylinder 4 having a cylinder body 41 and a piston 42 sliding on the cylinder body 41 in this embodiment.
It consists of The cylinder 4 is arranged between the left frame body 12 and the right frame body 11 on the lower side of the support portion 3, and the lower end side of the cylinder body 41 is pivotally supported by the left frame body 12 and the right frame body 11. At the same time, the tip end side of the piston 42 is pivotally supported by the drive attachment portion 34 a of the support portion 3. It should be noted that the cylinder 4 as the operation unit 4 includes the support unit 3 in the main body 1
On the other hand, it is for rotating operation by pushing and pulling the piston 42, and instead of the cylinder 4, other power means may be used. Further, when the cylinder 4 is used, a conventionally used one can be used, and an appropriate one can be selected and used.

As shown in FIGS. 4 (A) and 4 (B), the rotary operation member 2 is formed of a columnar body, and has an operation member engaging portion hole 21 as the operation member engaging portion 12 at the center thereof. . The operation member engaging hole 21 is for engaging with the outer periphery of the nut, and is formed so as to be fitted and engageable with the hexagonal portion formed on the outer periphery of the nut. Also, the operating member engaging hole 2
1 has an opening 22 opened from the outer periphery. The opening 22 is set to be narrower than the width of the opposite side of the nut and larger than the diameter of a pipe or the like screwed into the nut, and the outer circumference of the pipe or the like is radially connected to the nut engaging portion 21 through the opening 22. I am trying to enter from.

Further, on the outer circumference of the rotary operation member 2, ratchet teeth 23 composed of a plurality of teeth are provided over the entire circumference from the left end side to the right end. This ratchet tooth 2
3 is adapted to mesh with the engaging teeth 52a of the pawl member 52, and the outer diameter of the entire ratchet teeth 23 is rotatable in the fitting insertion portion 31 of the support portion 3 in the circumferential direction, and The turning operation member 2 is formed in such a size that it can be slidably inserted in the axial direction, and the rotation operation member 2 has the insertion / removal hole 31a of the insertion / insertion portion 31.
Both teeth 23 and 52a can be engaged with each other by being inserted from. The ratchet teeth 23 are
The width is not limited to that provided from the left end side to the right end, and a width that can be engaged with the claw member 52 of the support portion 3 is sufficient, and both ends may be formed as smooth outer peripheral surfaces.

Next, a method of using the apparatus of the above embodiment will be described by taking the case of operating the tube joint T as an example. The connection by the pipe joint T is performed by connecting the pipe joint T attached to the pipe member K2 on the right side to the pipe member K on the left side as shown in FIG.
By connecting the nut N connected to No. 1 to the male threaded portion T1 provided on the pipe joint T and tightening the two, the two tubular rod members K1 and K2 can be connected by the pipe joint T. Is.

First, as shown in FIG. 5, the rotary operation member 2 is inserted into the fitting insertion portion 31 of the support portion 3 to the left side by about half, and the openings 31a and 22 are aligned with each other. Then, the bolt-shaped tube joint T attached to the right tube-shaped rod member K2.
Then, the nut N connected to the left tubular rod member K1 is screwed into the male thread portion T1 of the pipe joint T, and from this state, the main body engaging portion 14 of the main body portion 1 is attached to the left and right center of the pipe joint T. The opening 1 of the main body engaging portion 14 is provided on the outer circumference of the hexagonal head T2 provided.
4a to engage through. By this engaging operation, the nut N screwed into the tubular rod member K1 is inserted into the fitting portion 31 of the support portion 3.
It naturally enters the inner axial position through the opening 31a of the fitting insertion portion 31, and the left tubular rod member K1 also rotates.
Through the opening 22 into the operation member engaging hole 21. Accordingly, the head portion T2 of the pipe joint T can be easily engaged with the main body engagement portion 14 without the tubular rod members K1 and K2 interfering with the inside of the fitting insertion portion 31 of the support portion 3. The nut N can be inserted at the axial center position of.

Thereafter, the turning operation member 2 is rotated in the circumferential direction,
The operation member engaging hole 21 of the rotation operation member 2 is aligned so as to be fitted to the outer periphery of the nut N in the insertion insertion portion 31, and the rotation operation member 2 is further slid in the insertion insertion portion 31. Let As a result, the ratchet teeth 23 of the rotation operating member 2 are not supported by the support portion 3.
The engaging teeth 52a of the claw member 52 are engaged and locked.
At that time, the ratchet teeth 23 of the rotating operation member 2 may come into contact with the engaging teeth 52a of the claw member 52 protruding to the inner circumference of the fitting insertion portion 31 of the support portion 3. Artificial teeth 5
Since the crest member 2 abuts against the ratchet teeth 23 of the turning operation member 2, the through hole 5 of the support portion 3 is formed because the crest member 2a has a small height.
The inside of 1 is escaped to the radially outward side, and the claw member 52 is rotated by the turning operation member 2.
It does not get in the way of inserting.

As described above, the nut N and the head portion T2 of the tube joint T can be engaged at the same time, and the turning operation member 2 and the support portion 3 can be engaged with each other to complete the setting. By doing so, the operation can be easily performed by only pushing the small cylindrical rotation operating member 2 into the fitting insertion portion 31 of the support portion 3. In particular, in the case of working in a narrow place, it is suitable for smooth work.

When the cylinder 4 operates and the piston 42 projects from that state, the support portion 3 rotates rightward (Z direction in the drawing) by a predetermined amount as shown in FIG. As soon as the support part 3 starts to rotate, the claw member 52
Engaging teeth 52a of the rotary operation member 2 and the ratchet teeth 23 of the rotating operation member 2 mesh with each other, and the claw member 5 meshes with the right rotation of the support portion 3.
2 rotates in the X direction within the through hole 51 of the support portion 3 and is pushed toward the inner upper wall 51a side so that it cannot escape, and the rotation operating member 2 meshed with this rotates together, thereby causing the nut. N
Can be turned. Further, the nut N also moves in the axial direction of the pipe joint T at the same time when the nut N rotates along the male screw portion T1 of the pipe joint T. However, in this device, the operation member engagement with which the nut N is engaged is performed. It moves by sliding on the inner wall surface of the hole 21. On the other hand, when the rotation operation member 2 is rotated by meshing with the support portion 3, the engaging teeth 52a of the claw member 52 and the ratchet teeth 23 of the rotation operation member 2 have a low mountain height, but a plurality of teeth are simultaneously formed. The meshing does not slip off.

After that, when the piston 42 is pulled, the supporting portion 3 rotates counterclockwise (direction W in FIG. 2). When the support portion 3 is rotated, the claw member 52 escapes the inside of the through hole 51 of the support portion 3 toward the radially outward side against the coil spring 53, and the engaging tooth 52a of the claw member 52 and the rotation operating member 2 are rotated. Ratchet teeth 2
The meshing with 3 is disengaged, and only the support portion 3 is rotated and the rotation operation member 2 is not rotated. Hereinafter, the nut N can be rotated in one direction as the piston 42 reciprocates. As described above, the nut N can be tightened.

In the above embodiment, the main body engaging portion 14 of the main body portion 1 is engaged with the outer periphery of the head portion T2 of the pipe joint T, and the nut N is inserted into the operating member engaging hole 21 of the rotary operating member 2. Although engaged, the nut N is engaged with the main body engaging portion 14 of the main body 1,
The outer periphery of the head portion T2 of the tube joint T may be engaged with the operation member engagement hole 21 of the rotation operation member 2. Further, in this embodiment, the main body engaging portion 14, the support portion 3 and the turning operation member 2 of the main body portion 1 are provided with openings 14a, 31a and 16a, respectively, and the head portion T2 and the nut N of the pipe joint T are provided. Although it can be engaged from the radial side, if the main body engaging portion 14 can be passed from the axial side, for example, when tightening a nut on a bolt, the openings 14a, 31a, 16a need not be provided. good.

Next, the second embodiment will be described. Second
The apparatus of the embodiment relates to the embodiment in which the outer periphery of a round bar member such as a pipe can be engaged with the main body engaging portion 14 of the main body 1. The device of the second embodiment is a device in which the device of the first embodiment is fully used and a clamp member 6 is attached to the right side of the right frame body 11. Therefore, except that the clamp member 6 is attached, the structure is the same as that of the previous embodiment, so only the clamp member 6 will be described and the other parts will be omitted.
Further, in the following embodiments, the parts having the same configurations as those in the first embodiment are designated by the numbers used in the first embodiment.

This clamp member 6 is the same as that used conventionally, and as shown in FIG.
Clamp body 61 fixed to 1 and clamp body 61
Curved holding member 6 rotatably attached to the upper part of the
2 and a locking member 63 that locks the holding member 62.

The clamp body 61 is provided with an ip fitting insertion portion 61a, which is recessed in a semicircular shape from the upper surface to the lower side, on the upper side so that a pipe can be fitted therein. The holding member 62 has a holding portion 61a of the clamp body 61 at one end side.
It is rotatably attached to the side of and the other end is provided with a locking projection 62a that is locked to the locking member 63. In addition, the lower surface of the central portion is provided with a holding portion 62b that is recessed in a semicircular shape on the upper side so that it can abut substantially the entire upper portion of the pipe fitted and inserted into the pipe fitting and inserting portion 61a of the clamp body 61. Has been done.

As shown in FIG. 7, the engaging member 63 has a U-shape, and has an engaging portion 63a which is detachably engaged with the engaging protrusion 63a of the holding member 62 at the upper portion and has a lower end at the lower end. An operation hole 63b is rotatably attached to the lower end of the clamp body 61. The operation hole 63c is provided with the shaft pin 61b fixed to the clamp body 61 and the clamp body 6
1 and the pressing piece 61d formed on the rod-shaped operation handle 61c. Specifically, the shaft pin 61b of the clamp body 61 is formed to have a smaller diameter than the operation hole 63c. Further, the tip end of the operation handle 61c is axially supported by the shaft pin 61b, and a columnar pressing piece 61d is provided at a position separated from the shaft supporting position by a predetermined distance in the axial direction. The distance to the piece 61d is about the same as the operation hole 63c. Then, by inserting the shaft pin 61b and the pressing piece 61d into the operation hole 63c, the locking member 63 is attached to the clamp body 61 in the vertical and horizontal directions by the difference in diameter between the operation hole 63c and the shaft pin 61b. It is movably and rotatably attached. The right frame 1
The upper part of 1 may be provided with a hole from the upper surface to the extent that a pipe fitted into the pipe fitting part 61a of the clamp body 61 can be inserted, and the width of the body engaging part 14 formed in the previous embodiment. Is smaller than the diameter of the pipe fitting portion 61a, it may be opened separately so that the pipe can be inserted.

In order to operate the nut N screwed to the pipe P using the apparatus constructed as described above, first, as shown in FIG. 7, the pipe P is inserted into the pipe fitting portion 61a of the clamp body 61. And the holding member 62 along the upper side of the pipe P. After that, the locking portion 63a of the locking member 63
Is locked to the locking projection 62a of the holding member 62. At this time, if the operation handle 61c is rotated upward as shown by the one-dot chain line in FIG. 7, the locking member 63 moves upward by the difference in diameter between the operation hole 63c and the shaft pin 61b. , Can be locked easily. Then, from that state, the operation handle 61c is rotated downward. As a result, the pressing piece 61d of the operation handle 61c presses the inner circumference of the operation hole 63c, and the locking member 63 is moved to the operation hole 63c.
And the shaft pin 61b can be moved downward by a difference in diameter between the shaft pin 61b and the shaft pin 61b.
If a line connecting 3a and the shaft pin 61b is crossed, the locking member 63
Can be locked completely.

The pipe P is connected to the clamp body 61.
In the state of being locked with, the nut N screwed to the pipe P as shown in FIG. 8 is positioned at a substantially axial center position in the fitting insertion portion 31 of the support portion 3 as in the previous embodiment. Therefore, similarly to the case described in the previous embodiment, if the turning operation member 2 is fitted and inserted from the insertion / removal opening of the fitting insertion portion 31, the turning operation member 2 and the nut N can be engaged. It should be noted that the pipe fitting insertion portion 61a of the clamp body 61 and the holding portion 62b of the holding member 62 can be held as long as they can contact at least two points on the outer circumference of the pipe without forming a semicircular shape and contacting the outer circumference of the pipe. For example, it may be formed in a V shape.

Next, a third embodiment will be described. Third
The apparatus of the embodiment has a scaffolding support S as shown in FIG. 9 (A).
The present invention relates to a support jack tightening / loosening device used for the support jack S1. First, prior to the description of the fastening device for a support jack, the scaffolding support S will be briefly described. The scaffolding support S is generally used to support a building member such as a temporary frame from below at a construction site. The support jack S1 is provided at the upper end of the scaffold support S. This support jack S
1 has a jack main body S2 having a handle portion S5 at the upper portion of FIG. 9B, and a jack portion S3 screwed to the jack main body S2. Further, the jack S3 is provided with a building member mounting portion S6 on the upper portion thereof, and a shaft S having a male screw portion engraved on the lower portion thereof.
4, the shaft S4 is screwed into a female screw portion engraved in the handle portion S5 of the jack body S2,
By rotating the handle portion S5 of No. 2, the jack portion S3
Is guided by the female screw portion and can be moved up and down.

In such a support jack S1, the construction member mounting portion S6 of the jack portion S3 is adjusted to a predetermined height,
If the building member is kept in a mounted state, the building member mounting portion is gradually loaded, and it becomes difficult to manually rotate the handle portion S5 even if the building member mounting portion is later removed. for that reason,
Conventionally, the handle S5 is hit and rotated with a hammer or the like at present, and as a result, the support jack S1 is often disturbed. Therefore, the present invention is manufactured for the purpose of providing a handle that can be easily turned even when it is difficult to turn the handle S5 due to a load.

In the support jack tightening / loosening device of this embodiment, a clamp member 5 similar to that described in the second embodiment is attached to the main body 1 as shown in FIG. As shown in FIGS. 10 (A) (B) (C), a shaft fitting groove 211 for fitting the shaft S4 of the jack S3 is
It is bored along the axial direction from the left end to the right end at a depth from the outer periphery to the shaft core portion. Further, the outer peripheral portion on the right side of the rotating operation member 21 constitutes a portion to be fitted and inserted in the fitting and inserting portion 31 of the support portion 3, and ratchet teeth 23 similar to those in the previous embodiment are formed. On the other hand, on the left end surface, a handle fitting groove 212 for fitting the handle portion S5 of the jack body S2.
Is pierced at a predetermined depth from the left end face so as to be orthogonal to the shaft fitting groove 211 in the diametrical direction.

In order to lower the jack portion S3 of the support jack S1 using this support jack tightening / loosening device, first, the shaft S4 of the jack portion S3 is fitted and inserted into the shaft fitting groove 211 of the rotary operation member 21. At the same time, the handle S5 of the jack body S2 is fitted into the handle fitting groove 212. As a result, the rotary operation member 21 is moved to the jack body S2
Can be locked to the handle S5. And from that state,
The fitting insertion portion 31 of the main body 1 is fitted into the portion of the rotation operation member 21 where the ratchet teeth 23 are formed. Also, the main body 1
By inserting the inserting portion 31 of the
The axis S4 can be along the pipe fitting portion 51a of the clamp member 5. After that, the holding member 52 and the locking member 53
And the shaft S4 of the jack S3 and the clamp member 5 are operated.
The setting is completed by locking and. When the fitting insertion portion 31 of the main body 1 is fitted into the rotation operation member 21,
A predetermined gap is opened between the end surface of the rotation operation member 21 and the inner end surface of the fitting insertion portion 31.

When the cylinder 4 is actuated and the support portion 3 starts to rotate, the rotation operating member 2 meshed with the support portion 3 also starts to rotate, whereby the handle S5 can be turned. At that time, when the handle S5 turns, the jack portion S3 is guided by the female screw portion and starts moving downward.
Along with this, the inner surface of the fitting insertion portion 31 of the main body portion 1 slides on the outer periphery of the rotation operation member 21, thereby smoothly moving the jack portion S3 held by the clamp member 5 downward with respect to the handle S5. You can In this way, if the handle S5 is rotated, a load is applied and the handle S
Even if it becomes difficult to turn 5, it can be easily turned without hitting with a hammer or the like.

Next, a fourth embodiment will be described. Fourth
The apparatus of the embodiment relates to a pipe fastening / loosening device which can be used for fastening and loosening a screw-threaded pipe and a tubular joint as shown in FIG. 13, for example. In this pipe tightening / loosening device, a clamp member 6 similar to that used in the second and third embodiments is attached to the main body 1. On the other hand, the turning operation member 31 is composed of two parts, a turning operation body 320 and a pipe fixing member 330, as shown in FIGS. The turning operation body 320 has a pipe fixing member fitting / inserting portion 321 for fitting and inserting the pipe fixing member 330 formed along the axial direction from the left end to the right end. Further, a plurality of sliding grooves 322 ... 322 are provided along the axial direction from the left end to the right end on the inner circumference of the pipe fixing member fitting insertion portion 321. On the other hand, ratchet teeth 23 similar to those of the previous embodiment are formed on the outer peripheral portion of the pipe fixing member 330.

In the pipe fixing member 330, a pipe fitting inserting portion 331 having a semicircular cross section for fitting a pipe therein is bored along the axial direction from the left end to the right end. Further, on the outer circumference, the sliding grooves 322 ... 322 of the turning operation body 320 are provided.
A plurality of sliding pieces 332 ... 332 to be inserted into
By fitting the outer peripheral portion into the pipe fixing member fitting insertion portion 321 of the turning operation body 320, the pipe fixing member 330 becomes unrotatable in the circumferential direction and axially slidable in the turning operation body 320. Connected. The left end portion is provided with a pipe holding means for holding the pipe. The pipe holding means has the same structure as the clamp member 5 attached to the main body 1. Specifically, the pipe holding member 333 for holding the pipe fitted in the pipe fitting portion 331, the locking member 334 for locking the pipe holding member 333, and the operation handle 335 for operating the locking member 334. And are provided so that the pipe can be held between them.

The method of using this pipe tightening / loosening device is shown in FIG.
As shown in FIG. 3, first, the clamp member 301 of the main body 1 is fixed to the joint G screwed to the pipe P. Next, the turning operation member 320 in which the pipe fixing member 330 and the turning operation main body portion 320 are connected is attached to the pipe P extending to the support portion 3 side of the main body portion 1 and the pipe fitting insertion portion 331 of the pipe fixing member 330. As it goes along, it is fitted and inserted from the inlet / outlet port of the fitting / inserting portion of the support portion 3. When the pipe P is tightened with respect to the joint G, the pipe fixing member 330 is rotated by the turning operation body 320.
By slightly pulling the pipe fixing member 330 to the left side in the drawing from the turning operation body 320, the pipe fixing member 330 can be slid rightward with respect to the turning operation body 320. Keep it. Incidentally, this rotation operation member 31
When fitting the plug into the fitting insertion portion of the support portion, the pipe fixing member 3
30 and the rotation operation main body 320 may be separately and sequentially performed. For example, the rotation operation main body 320 is previously inserted into the fitting insertion portion of the support portion, and the joint G of the main body 1 is inserted. After fixing the clamp member 301, the pipe fixing member 330
The fitting portion 32 for the pipe fixing member of the turning operation body 320
You may make it fit in 1. Then, from that state, the pipe P along the pipe fitting portion 331 is fixed by the holding member 333 and the locking member 334 of the pipe fixing member 330. This completes the setting.

After that, when the cylinder 4 is actuated and the support part 3 starts to rotate, the rotary operation body part 320 meshed with the support part 3 also starts to rotate, and at the same time, the pipe fixing member 3
30 rotates. Thereby, the pipe P can be rotated with respect to the joint G. At that time, when tightening the pipe P to the joint G, the pipe P and the joint G are rotated as the pipe P is rotated.
Although the interval between and becomes gradually shorter, the pipe fixing member 330 slides with respect to the rotating operation body 320 in accordance with the interval, so that both can be smoothly tightened.

[0046]

As described above, according to the first aspect of the present invention, when the rotating operation member is operated in the fitting / inserting portion, the tightening / releasing member and the operating member engaging portion on one side arranged on the fitting / inserting portion side. Can be easily engaged.
Further, since the turning operation member is configured only with the operation member engaging portion that can engage with the outer periphery of the tightened and loosened member on one side, it becomes compact and fits in the fitting insertion portion. It can be operated easily. Therefore, the operation of inserting the compact rotary operation member into the insertion portion is sufficient, and the work can be performed easily and easily.

In addition to the effect of the first invention of the present application, the second invention of the present application, in addition to the effect of the first invention of the present application, for example, when the bolt and the nut screwed together are engaged with each other, the bolt head is attached to the main body engaging portion of the main body. If the operation member engaging portion of the rotation operation member is engaged and positioned so as to be fitted to the outer periphery of the nut in the fitting insertion portion and is fitted into the fitting insertion portion from the other end side of the fitting insertion portion, the fitting is performed. With the insertion, the outer circumference of the nut can be fitted into the operation member engaging portion naturally. Therefore, the work can be performed more easily, and it is possible to make it suitable for tightening and loosening the bolt and the nut, or the nuts.

On the other hand, in the third invention of the present application, for example, when tightening and loosening the joint screwed to the pipe, when the pipe is rotated with respect to the joint by the pipe fixing member, the pipe is moved in the axial direction according to the movement. Since the pipe fixing member engaged with the pipe slides in the turning operation main body portion in the axial direction, the pipe can be smoothly rotated with respect to the joint. Therefore, it can be made suitable for tightening and loosening the pipe and the joint.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a screw tightening / loosening device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of a support portion.

FIG. 3 is a central cross-sectional view of the main part of the main body.

FIG. 4A is a front view of a rotary operation member, and FIG. 4B is a left side view thereof.

FIG. 5 is an explanatory diagram when a nut is operated by the device of the first embodiment.

FIG. 6 is a side view of a clamp member in the device of the second embodiment.

FIG. 7 is an explanatory view of a clamp member.

FIG. 8 is an explanatory diagram when a nut is operated by the device of the second embodiment.

9A is an explanatory diagram of a scaffolding support, and FIG. 9B is an explanatory diagram of a support jack of a scaffolding support.

FIG. 10A is a front view of a rotary operation member of the third embodiment, FIG. 10B is a left side view of the same, and FIG. 10C is a plan view thereof.

FIG. 11 is an explanatory diagram when operating the support jack by the device of the third embodiment.

FIG. 12 relates to a rotation operating member of the fourth embodiment, (A) is
FIG. 3B is a perspective view of the turning operation body portion, and FIG. 3B is a perspective view of the pipe fixing member.

FIG. 13 is an explanatory diagram when a pipe is operated by the device of the fourth embodiment.

FIG. 14 is an exploded perspective view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body part, 2 ... Rotation operation member, 3 ... Support part, 4 ... Operation part, 31 ... Fitting insertion part, 21 ... Operation member engagement hole

Claims (3)

[Claims] 1. A tightening or loosening of one side with respect to the other side by non-rotatably engaging each of two screw-fastened members to be fastened and rotating them in relatively opposite directions. In this screw tightening / releasing device, the device is a rotation operation for rotating the body (1) and the screw-fastened member on one side with respect to the screw-fastened member on the other side. The member (2), the rotary operation member (2) includes an operation member engaging portion (21) capable of engaging with the outer circumference of the member to be tightened on one side, and the other end of the main body portion (1). A main body engaging portion (14) capable of engaging with the outer periphery of the other member to be tightened is provided on one side, and a cylindrical supporting portion (1) for supporting the turning operation member (2) is provided on one end side. 3) is provided, and the inside of the cylinder of the support portion (3) forms a fitting insertion portion (31) into which the rotation operation member (2) can be fitted so as to be rotatable and axially slidable. ) Is connected to the main body engagement part (14) The two threaded members to be tightened can be arranged on the body engaging portion (14) and the fitting insertion portion (31) side at the same time, and can be rotated into the fitting insertion portion (31). When the operating member (2) is inserted, the operating member engaging part (21) of the rotary operating member (2) can be engaged with the one-sided loosened member arranged on the inserting and inserting part (31) side. This support part (3) is a locking mechanism capable of locking the rotation operation member (2) fitted in the fitting insertion part (31) and the support part (3) in a non-rotatable manner.
(23) and (52a), the support portion (3) is rotatably arranged on the main body portion (1), and is fitted in the locked state between the rotation operation member (2) and the support portion (3). A screw tightening / loosening device, characterized in that a turning operation member (2) fitted into an inserting portion (31) can be turned together with a supporting portion (3). 2. An operating member engaging portion (2) of the rotary operating member (2).
1) is composed of an operating member engagement hole (21) axially bored from one end face side so that the outer periphery of the head of a hexagonal nut or bolt can be fitted, and a rotary operating member ( 2. The device 2) is adapted to be fitted into the fitting insertion portion 31 while engaging the operating member engagement hole 21 with the outer circumference of a nut or the like. Screw tightening device 3. The turning operation member (2) comprises a turning operation body portion (320) fitted into a fitting insertion portion (31) of a support portion (3) and an operation member engaging portion (21). The pipe fixing member (330) has two parts, and the pipe fixing member (330) can hold the pipe by including the pipe holding means (333) (334) as the operation member engaging portion. The pipe fixing member (330) is non-rotatably and slidably connected to the turning operation body (320), so that the supporting portion
The pipe fixing member (330) that holds the pipe with the rotation of the rotation operation body (320) by (3) causes the rotation operation body (32) to move.
The screw tightening / loosening device according to any one of claims 1 to 3, characterized in that the screw can be rotated together with the rotation operation body (320) while sliding (0) in the axial direction.