JPH0248111Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a rivet tightening jig, and its purpose is to attach a rivet to the tip of the rivet tightening jig, and to rotate the rivet about its axis. The angle can be adjusted with the rivet, and the tip of the rivet can be expanded while the rivet is attached.This not only makes it possible to tighten the rivet to the connected part where two boards are stacked on top of each other, but also to tighten the rivet relative to each other on the surface of the wall material. When fixing a pair of U-shaped members, when connecting parts to be connected arranged inside a wall material having slits, when the inside of the parts to be connected is shielded from the outside, To provide a rivet tightening jig capable of tightening a rivet even when conventional jigs cannot tighten the rivet, such as when there is no space inside or outside of a connecting part.

(Prior Art and Its Disadvantages) Conventionally, as shown in FIG. 9, a rivet a has been used to connect a connected portion d formed by overlapping two plates b and c.

As shown in FIG. 8, this rivet a consists of a round bar-shaped body e and an enlarged-diameter disk-shaped head f formed at the base end of the body e, and is used to attach the connected parts. To connect rivet d, as shown in Fig. 9, drill a rivet hole g in the connected part d, insert the body e of rivet a into this rivet hole g, and apply the head f of rivet a. While supporting it with a plate h, smash the protruding end of the body e with a hammer i to expand it, and this expanded part j
The connected portion d was tightly connected between the head f and the head f.

However, for example, as shown in FIG.
When fixing a pair of U-shaped members facing each other to the surface of
The rivet must be placed so close that it overlaps with the head f of the rivet A. However, if the rivet a is placed close to the rivet a, when inserting the rivet a between the pair of U-shaped materials, the head f will not be able to cross the U-shaped materials, and the rivet a will not be able to be inserted. It was impossible to use.

For example, when connecting parts to be connected disposed inside wall materials having slits as shown in FIG. If the diameter was smaller than this, the rivet could not be inserted into the slit and the rivet could not be used.

Furthermore, if the inside of the connected part is shielded from the outside, such as when the connected part is sealed and is part of a box body, as shown in FIG. It was not possible to use rivets because it was not possible to bring in jigs such as pressing plates.

For example, as shown in FIG. 6, which will be described later, if there are obstacles such as other members close to the inside and outside of the connected parts, and there is only a small space inside and outside of the connected parts, a pressing board, It was not possible to use jigs such as hammers, and rivets could not be used.

(Means for Solving the Problem) This invention was made to solve the above problem, and includes a grip, a cylindrical jacket protruding from the front surface of the upper part of the grip, and a cylindrical jacket extending from the jacket to the upper part of the grip. A cylindrical sliding body is housed in the jacket, and a cylindrical nose for attaching a rivet is formed at the distal end of the jacket so as to be rotatable about its axis, and a cylindrical nose is formed on the distal end of the jacket to be rotatable about its axis. A stop protrusion and a caulking protrusion are formed,
The sliding body has a collection chuck at its distal end and a piston at its proximal end for slidingly moving the sliding body in the axial direction of the jacket, and the through hole inside the sliding body has a nose at its distal end. The above-mentioned problem is further solved by providing a rivet tightening jig whose base ends are connected to the delivery holes on the rear surface of the grip.

(Example) An example of this invention will be described based on the drawings.

Figures 1A and B show one embodiment of this invention, Figures 2A and B show a modified example of the same, Figures 3A to C show rivets used in one embodiment, and Figures 4A to E show the rivets used in one embodiment. FIG. 3 is a diagram illustrating the usage state of one embodiment.

As shown in FIG. 1, a rivet tightening jig 1 according to an embodiment of the invention includes a grip 2 and a cylindrical jacket 3 protruding from the top of the grip 2.
and a cylindrical sliding body 4 accommodated from the jacket 3 to the upper part of the grip 2.

In this embodiment, a rear-opening cylinder chamber 5 is formed in the upper part of the grip 2, and this cylinder chamber 5 passes vertically through the grip 2 and communicates with a hydraulic oil storage hole 6 opened at the front end of the cylinder chamber 5. It is closed by a lock nut 7 screwed onto the rear end of the cylinder chamber 5.

Further, an air piston rod 2'' of an air piston 2'' housed in an air cylinder 2' at the bottom of the grip 2 is inserted into the hydraulic oil housing hole 6.

In addition, in front of the grip 2, a lever 8 and a swing arm 9 are pivotally supported on the grip 2, a slide valve 10 is slid by the swing arm 9, and a slide valve 10 is installed between the lever 8 and the swing arm 9. Dratsugrod 1
1st class is installed.

In this embodiment, the jacket 3 has its proximal end connected to a cylindrical case 1 fitted into the upper front surface of the grip 2.
2, a cylindrical rotating case 13 whose base end is inserted into the tip of this cylindrical case 12 and is rotatable around its axis, and a cylindrical rotating case 13 for attaching a rivet attached to the tip of this rotating case 13. It consists of a nose 14.

A guide cap 15 is fitted to the tip of the cylindrical case 12, and the middle part of the rotary case 13 is covered with the guide cap 15.
A guide hole 16 is opened on the circumferential surface of the guide cap 15 by a length of 1/4 of the circumferential surface, and a lever 17 is inserted through the guide hole 16 and protrudes from the circumferential surface of the intermediate portion of the rotary case 13.

Further, a positioning nut 18 along the base end surface of the guide cap 15 is screwed onto the circumferential surface of the intermediate portion of the cylindrical case 12.

In this embodiment, a lever 17 is formed, and by manually operating the lever 17, the rotating case 13 is
However, in this invention, the rotating case 13 may be rotated by electric power, air, or the like.

The nose 14 is provided with locking protrusions 20 on the top and bottom and two caulking protrusions 21 on the left and right sides of the nose 14, respectively.

In this embodiment, the sliding body 4 includes a cylindrical piston 22, a cylindrical connecting bolt 23 attached to the tip of the piston 22, a cylindrical joint 24 screwed to the tip of the connecting bolt 23, and a cylindrical joint 24 screwed to the tip of the connecting bolt 23. A cylindrical collet 2 screwed onto the tip of the joint 24
5, and a collector chuck 26 housed at the tip of the collector 25.

The piston 22 includes a piston rod 29 that is inserted into and supported by a guide hole 27 on the upper front surface of the grip 2 and a delivery hole 28 of the lock nut 7, and a piston rod 29 that is formed in a swollen shape in the middle of the piston rod 29, and that is formed in the cylinder chamber 5. and a piston head 30 housed within.

The collet 25 has a taper 31 formed on the inner peripheral surface of the distal end thereof, and a chuck movable space 32 continuous with the taper 31 is recessed at the base end of the taper 31.

The collector chuck 26 has a plurality of chuck pieces 34 each having an arcuate knurl 33 formed on the inner circumferential surface of the distal end thereof, which are arranged in parallel so as to surround the axis of the collet 25. While fitting into the taper 31, its tip 38 is inserted into the chuck movable space 3.
2, and its tip end is tied with an O-ring 39 made of an elastic material such as rubber.

A series of communication holes 40 are formed inside the sliding body 4 configured as described above, and the tip thereof communicates with the insertion hole 41 inside the nose 14, and the base end thereof communicates with the delivery hole 28 of the lock nut 7. .

Next, a modification of this invention will be explained (see FIG. 2).

In this modified example, the distal end surface 19 of the nose 14 of the previous embodiment is bulged up and down, and the locking protrusion 20 is formed in this bulged portion 42.

In the figure, 43 is a return spring, and 44 is an exhaust port.

The rivet tightening jig 1 according to the embodiment of this invention is constructed as described above, and the rivet used in this rivet tightening jig 1 is, for example, one shown in FIG. 3.

The rivet 50 is composed of a rivet material 51 and a tightening pin 53 inserted into an insertion hole 52 of the rivet material 51.

The rivet material 51 consists of an expansion sleeve 54 and locking arms 55 that project from the peripheral surface of the proximal end of the expansion sleeve 54 at right angles to each other.

The tightening pin 53 consists of a pin shaft 56 that is inserted through the expansion sleeve 54 of the rivet material 51, and an expanded shaft head 56' formed at the base end of the pin shaft 56.

Furthermore, the locking arm 55 of the rivet material 51 is formed to have a width that is approximately the same length as the diameter of the outer periphery of the expansion sleeve 54, and the shaft head 56' of the tightening pin 53 has a diameter larger than the inner diameter of the expansion sleeve 54. A wedge-shaped divided blade 57 facing in the pin axis direction is continuously formed on this shaft head 56'.

Further, a plurality of ring-shaped knurlings 58 are carved on the circumferential surface of the base end of the pin shaft 56, and cutting grooves 59 are provided on the circumferential surface of the distal end of the ring-shaped knurlings 58.

To tighten such a rivet 50 using the rivet tightening jig 1 according to an embodiment of the invention, the following procedure is performed.

First, for example, as shown in FIG.
A pair of U-shaped members 61, 62 facing each other on the surface of
When fixing, it is first necessary to attach the rivet 50 to the rivet tightening jig 1, and to do this, insert the tip of the pin shaft 56 into the insertion hole 41 of the nose 14.
It is preferable to insert the O-ring 39 into the collector chuck 26 against the binding force of the O-ring 39, and to engage the engagement hole 55' of the rivet material 51 with the locking protrusion 20 of the nose 14, thereby making the O-ring 39 elastic. The arcuate knurling 33 of the chuck piece 34, which contracts in response to the restoring force, engages with the ring-shaped knurling 58 at the tip of the pin shaft 56 to prevent the rivet 50 from being removed. Rotation of the rivet 50 is stopped through engagement with the rivet.

Next, this rivet 50 is attached to U-shaped members 61 and 62.
A rivet hole 6 bored in the wall material 60 between
4, and to do this, align the locking arm 55 parallel to the longitudinal direction of the slit 63 between the U-shaped members 61 and 62, and in this state pass the rivet 50 through the slit 63. The width of the locking arm 55 is approximately the same as the outer diameter of the expansion sleeve 54, so the slit 63 is inserted into the expansion sleeve 54.
4 has a width that allows it to pass through, the locking arm 5
5 also passes through the slit 63 without interfering with the U-shaped members 61 and 62.

Next, from this state, the locking arm 55 of the rivet 50 is attached to the inner relative edges 61',
62', and to do this, it is best to operate the lever 17 along the guide hole 16, and since the guide hole 16 is formed with a length of 1/4 of the circumferential surface of the guide cap 15, Through this operation, the nose 14 rotates together with the rotating case 13.
As the rivet 50 is rotated, the rivet 50 attached to the tip of the nose 14 is also rotated, and the locking arm 55 is aligned to a position perpendicular to its original position, so that the locking arm 55 is aligned with the inner relative edge. The portions 61' and 62' overlap.

Furthermore, it is necessary to expand the expansion sleeve 54 of the rivet 50 from this state, and this can be done by operating the lever 8, and this operation causes the slide valve 10 to move and compress the air cylinder 2'. Air is supplied, and the air piston rod 2'' supplies hydraulic oil into the cylinder chamber 5 through the air piston 2'' which receives the pressure of this compressed air, and the piston head 30 receives the pressure of this hydraulic oil. , the sliding body 4 is impulsively moved toward the proximal end, and due to this movement, only the tightening pin 53 of the rivet 50 is pulled toward its distal end.

Through this operation, the expansion sleeve 54 is divided linearly from its tip by the dividing blade 57 to form a dividing linear body 74, but the dividing blade 57 is continuously formed in a wedge shape. Therefore, the dividing linear body 74 is expanded into an octopus-like shape due to the pressing force between the adjacent dividing blades 57, 57.

This division and expansion of the dividing linear bodies 74 continues until the shaft head 56' on which the dividing blade 57 is provided moves to the back surface of the wall material 60, but when the division and expansion is completed, each dividing linear body 74 The expansion base 75 of the shaft head 56' is supported by pressure between the adjacent divided blades 57, 57, and the shaft head 56' is also locked to the inner circumferential surface of the locking arm 55 via the ring-shaped knurl 58. Therefore, the pair of U-shaped members 61 and 62 are fixed to the wall material 60 by the tightening force between the expanding base portion 75 and the locking arm 55.

In this way, the rivet 50 can be tightened by operating only the outside of the wall material 60.

When the pin shaft 56 is further pulled from this state,
The caulking protrusion 21 at the tip of the nose 14 locks the locking arm 5
5, the base protrudes toward the ring-shaped knurling 58, thereby ensuring the relative position of the expanding base 75 and the locking arm 55,
On the other hand, the tip of the pin shaft 56 is cut along the cut groove 59, and this cut portion comes off from the collection chuck 26 the next time the pin shaft 56 is inserted, and passes through the air supply hole 40 and out of the delivery hole 28. It is removed.

Second, for example, as shown in FIG. 5, a connected portion 70 of two plate materials 68 and 69 disposed inside a wall material 67 having a slit 65 overlaps with each other.
When connecting, insert the rivet 50 from inside the slit 65 in the same way as in the first step, change the angle of the locking arm 55 as necessary, and pull the pin shaft 56 to connect the locking arm 55 and the dividing line. The connected portion 70 is tightened with the expanded base 75 of the body 74 .

Thirdly, as shown in FIG. 6, for example, even if there are obstacles 71, 72 such as other members near the front and back surfaces of the connected portion 70 of the two plate materials 68, 69, the rivet 50 can be attached to the tip of the nose 14. Since it can be tightened by simply operating the connected part 70 on the outside while it is attached to the
This operation is not obstructed by obstacles 71, 72.

Fourthly, for example, when the connected part 70 is a part of a sealed box body 73 as shown in FIG. 7, the inside of the connected part 70 is shielded from the outside, and the Even if a jig cannot be brought in, the rivet 50 can be tightened by operating only the outside of the connected body 70, so that the rivet can be tightened.

(Effects) As explained above, this idea has a grip and
It consists of a cylindrical jacket protruding from the front surface of the upper part of the grip, and a cylindrical sliding body housed from the jacket to the upper part of the grip,
A cylindrical nose for attaching a rivet is formed at the tip of the jacket so as to be rotatable around its axis, and a locking protrusion and a caulking protrusion are formed on the tip surface of the nose, and the sliding body has a cylindrical nose rotatable about its axis. A collection chuck is formed at the distal end, and a piston is formed at the proximal end for slidingly moving the slider in the axial direction of the jacket. Since this is a rivet tightening jig whose base ends are communicated with the delivery holes on the rear surface of the grip, the following effects are achieved.

For example, when illustrating a pair of U-shaped members facing each other on the surface of a wall material, a rivet material with a locking arm protruding from the base end of the expansion sleeve, a pin shaft inserted through the rivet material, and the It is necessary to use a rivet consisting of a tightening pin with a shaft head with a continuous split blade at the base end, and to attach this rivet to a rivet tightening jig.To do this, the pin shaft of the rivet must be inserted into the collector chuck. If necessary, the rivet must be removed and locked using the collector chuck, the rivet must be locked in rotation using the locking protrusion, and then the rivet must be inserted into the rivet hole drilled in the wall material between the U-shaped materials. To do this, all you have to do is align the locking arm parallel to the longitudinal direction of the slit between the U-shaped materials, and in this state, pass the rivet through the slit and insert the rivet into the rivet hole. It is necessary to insert the rivet into the rivet hole without interfering with the U-shaped material, and then from this state to overlap the locking arm with the inner relative edge of the U-shaped material, which can be done by moving the lever. Preferably, this causes the rivet to rotate as well as the nose, which rotates together with the rotating case, so that the locking arm overlaps the inner relative edge of the U-shaped member.

Furthermore, it is necessary to expand the expansion sleeve of the rivet from this state, and this can be done by moving the sliding body toward the proximal end by actuating the piston.
As a result, only the tightening pin of the rivet is pulled toward its tip, and as a result of this action, the expansion sleeve is divided and expanded linearly by the dividing blade, and the base of the linear divided body supported by the shaft head is The U-shaped member is fixed to the surface of the wall material by the tightening force of the locking arm and the locking arm. In this way, this rivet tightening jig makes it possible to fix a pair of U-shaped members to the surface of a wall material, which has not been possible at all with conventional jigs such as a hammer and a press plate.

Second, even when connecting mutually overlapping connected parts of two plates arranged inside a wall material having slits, for example, the pin shaft can be pulled by operating only the outside of the connected parts. Since the connected part is tightened between the tensioned locking arm and the expanded base of the split linear body, it is possible to connect the connected part inside the slit, which could not be done with a conventional jig such as a hammer.

Thirdly, even if there is an obstacle near the front and back surfaces of the parts to be connected, for example, the rivet can be tightened only from the outside of the parts to be connected with the rivet attached to the tip of the nose, which was previously impossible. It is also possible to work near hot obstacles.

Fourth, for example, even if the connected parts are shielded from the inside to the outside, the rivet tightening force is applied only from the outside of the connected parts. It becomes possible to tighten with rivets a part of the closed box body etc. which could not be tightened with rivets because it cannot be brought into the inside of the connected part.

[Brief explanation of the drawing]

FIG. 1A is a vertical cross-sectional side view of a rivet tightening jig according to an embodiment of this invention, FIG. 1B is a front view of the same,
Figure 2A is a side view of the same modified example, Figure 2B is a front view of the same modified example, Figure 3A is a front view of a rivet used in an embodiment of this invention, and Figure 3B is a rivet material for the same rivet. The bottom view of Figure 3C is the same plan view, Figure 4A is the bottom view of
Figures 5 to 7 are diagrams for explaining the usage state of one embodiment, Figures 5 to 7 are diagrams for explaining the usage status of another example, Figure 8 is a perspective view of a conventional rivet, and Figures 9A to C are diagrams for explaining the usage status of a conventional rivet. 10A and 10B are diagrams illustrating other usage states. 1...Rivet tightening jig, 2...Grip, 3
... Jacket, 4 ... Sliding body, 14 ... Nose, 20 ... Locking projection, 21 ... Caulking projection, 2
2... Piston, 28... Delivery hole, 40... Delivery hole, 41... Insertion hole.

Claims (1)

[Scope of utility model registration request] It consists of a grip, a cylindrical jacket protruding from the front surface of the upper part of the grip, and a cylindrical sliding body housed from this jacket to the upper part of the grip, and the tip of the jacket has a rivet for attachment. A cylindrical nose is formed to be rotatable around its axis, and a locking protrusion and a caulking protrusion are formed on the distal end surface of the nose, and the sliding body has a collection chuck at the distal end and a collet chuck at the proximal end. Pistons for slidingly moving the sliding bodies in the axial direction of the jacket are formed, and
A rivet tightening jig in which the tip of the passage hole inside the sliding body communicates with the insertion hole inside the nose, and the base end communicates with the delivery hole on the rear surface of the grip.