JPS6343176B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure of a jaw portion of a riveter used for fastening work of blind rivets.

(Prior Art) Conventionally, there is a structure of the jaw section of this type of riveter as described in, for example, Japanese Utility Model Publication No. 45-23918.

That is, in this conventional case, as shown in FIG.
A set of a plurality of jiyos 10 that are pressed downward are housed, and the jiyo case 9e is fitted into the cylindrical portion 40 of the riveter main body 1e so as to be movable up and down by operating a lever 41.

According to this means, in the normal state in which the Jyo case 9e is lowered into the cylindrical part 40 of the riveter main body 1e, the Jyo 10, which is pressed downward by the spring 12, comes into contact with the nose piece 6 of the cylindrical part 40 and moves downward. It is in an open state where forward movement is blocked. Therefore, in this state, move the Joe case 9 to the lever 4.
When the jaw 10 is raised and separated from the nosepiece 6 by the operation 1, the jaw 10 moves forward and closes due to the pressing force of the spring 12, and thereby the blind rivet tightening work can be performed. be.

(Problems to be Solved by the Invention) However, in the conventional structure, the opening/closing operation of the jacket 10 is performed by the vertical movement of the jacket case 9e, and the closing operation of the jacket 10 is performed when the jacket case 9e is raised. Therefore, for example, when the jigyo part structure is applied to a hand riveter as shown in FIG. Therefore, when the movable lever 41 is closed, the jaw case 9e is raised and the jaw 10 is closed. Therefore, when using the hand riveter, the upper movable lever 41 must be closed and closed by pressing down with the thumb, resulting in an unnatural grip, poor operability, and high fatigue. A problem had arisen.

In other words, in this type of lever operation, a fixed handle grip, such as a bicycle brake lever, is grasped with the thumb side, and the other movable lever side is operated with the other four fingers, depending on the grip condition and how to apply force. However, in the past, there was no jaw structure that could accommodate such lever operations.

In addition, conventionally, not only when applied to hand riveters as mentioned above, but also when applied to other air riveters, etc., the jo case housed in the cylinder of the riveter body is moved against a load using air pressure, etc. The means for raising the riveter became extremely complicated, making it extremely difficult to manufacture automated mechanized riveters such as air riveters, and posing major problems in its manufacturability.

Therefore, when the present invention is applied to a hand riveter, the lever operation can be performed appropriately, and when applied to an automated riveter such as an air riveter, the drive mechanism is simplified and the manufacturability is improved. The purpose is to make it possible to achieve this goal.

(Means for Solving the Problems) The present invention does not require the Jiyo case itself, which is directly fitted into the cylindrical body of the riveter body, to be raised to close the Jiyo, as in the conventional case, but the Jiyo case is provided in a fixed state. By configuring the other auxiliary means for opening and closing the Jyo in the Jyo case to be lowered, the elevating and lowering operations related to the opening and closing of the Jyo are reversed from the conventional ones, and the above-mentioned conventional problems are solved. It is what was done.

That is, in the present invention, the jacket 10 which is pressed downward by a spring 12 is housed in the lower part of the jacket case 9, and the jacket 10 comes into contact with the bottom surface of the outer cylinder 5 which houses the jacket case 9. In the structure of the riveter's jig which is configured to be open when the riveter is separated and closed when the riveter is separated, the outer cylinder 5, which houses the jig case 9, has long holes 7, 7 drilled in the outer peripheral wall of the riveter. The case pin 8 fixed to the main body 1 is passed through and fitted into the insertion hole 2 of the riveter main body 1 in a vertically movable manner, and the case 9 inside the outer cylinder 5 is bored in its outer peripheral wall. The case pin 8 is inserted into the through hole 21 and is positioned and fixed to the riveter main body 1, and the upper part of the case 9 in the outer cylinder 5 is provided with the case pin 8 in the lower part of the case 9. This is the structure of the jill part of the riveter, in which an outer cylinder lifting spring 15 is provided, which always urges the outer cylinder 5 upward in order to bring the bottom side of the outer cylinder 5 into contact with the jill 10 and close the jew 10. .

(Function) Therefore, in the above structure, the outer cylinder 5 is normally urged upward by the outer cylinder lifting spring 15, and the jacket 10 in the jacket case 9 is brought into contact with the bottom side of the jacket 5. It can be set in an open state by contacting it.

In this state, if the outer cylinder 5 is pushed down and lowered relative to the Jyo case 9 which is fixed to the riveter main body 1, the Jyo case 9 will rise relative to the outer cylinder 5. Then, a similar effect will be produced. That is, when the outer cylinder 5 is lowered, the lower part of the jacket 10 of the jacket case 9 is separated from the bottom side of the outer jacket 5, and the jacket 10 pressed by the spring 12 can be moved downward and closed.

(Example) An embodiment of the present invention will be described below.

To explain the case where this embodiment is applied to a hand riveter, in FIGS. 1 and 2, 1 is a riveter main body having a lever part 19 at the rear end,
A mounting cylinder part 4 having a downward fitting hole 2 is formed at its distal end. Reference numeral 8 indicates a case pin supported in a case pin holding hole 3 formed in a direction perpendicular to the insertion hole 2 of the mounting cylinder portion 4.

Reference numeral 5 denotes a substantially cylindrical outer cylinder that is fitted into the insertion hole 2 of the riveter main body 1, and the outer cylinder 5 has elongated holes 7, 7 in its outer peripheral wall for passing the case pin 8 through. It is perforated in the longitudinal direction (axis length direction) and is movable up and down with respect to the riveter main body 1. Reference numeral 9 denotes a case fitted into the outer cylinder 5, and a case pin 8 is passed through small holes 21, 21 formed in the outer peripheral wall of the case 9, so that the case 9 is attached to the main body frame 1. It is attached to the mounting cylinder part 4 in a fixed position. Moreover, the Jyo case 9 has a plurality of Jyo 1s inside.
0. The seat 10, which houses a push shear 11, a push shear spring 12, and a spring cap 13, and is constantly pressed downward by the spring 12, comes into contact with the nose piece 6 on the bottom side of the outer cylinder 5. In this state, the downward movement of the jaw 10 is blocked and the jaw 10 is in an open state. On the other hand, when the jaw 10 is separated from the nose piece 6, the jaw 10 is guided by the tapered surface portion 14 on the bottom of the jaw case 9 and moves forward, resulting in a closed state.

Reference numeral 15 denotes an outer cylinder lifter which is housed inside the outer cylinder 5 and is brought into contact with both a pressing cap 16 screwed onto the upper part of the outer cylinder 5 and a Joe case cap 17 which is separately screwed onto the upper part of the Joe case 9. With spring for
The outer cylinder 5 is always urged to be pushed upward.

Reference numeral 18 denotes a movable lever pivotally attached to the riveter body 1 so as to be positioned below the lever portion 19 of the riveter body 1, and its tip abuts against and presses the pressing cap 16 on the upper part of the outer cylinder 5. A pressing portion 20 is formed for this purpose.

The present embodiment has the above configuration, and an example of its use will be described next.

Next, as shown in FIGS. 1 and 2, when the movable lever 18 is in the open state and the outer cylinder 5 is not pressed at all by the movable lever 18, the Jyo case 9 is pressed against the outer cylinder lifting spring 15. Since the jaw 10 is urged upward by the nose piece 6, the jaw 10 is in an open state in contact with the nose piece 6. Therefore, in this state, the mandrel 23 of the blind rivet 22 is inserted into the jaw 10, and then the movable lever 18 is closed as shown in FIG. The closing operation of the movable lever 18 can be performed by positioning the thumb side on the lever portion 19 of the riveter body 1 and gripping the movable lever 18 with the other four fingers.

Therefore, when the movable lever 18 is closed and the outer cylinder 5 is lowered against the elastic force of the outer cylinder lifting spring 15, the Jyo case 9 stored therein is moved by the Jyo case pin 8. Because the outer cylinder 5 is in a fixed state due to the presence of the case 9
descends relative to Therefore, the nose piece 6 of the outer cylinder 5 is separated from the jaw 10, and as a result, the nose piece 6 of the outer cylinder 5 is separated from the jaw 10.
0 advances along the tapered surface 14 by the pressing force of the pusher spring 12 and closes, firmly gripping the mandrel 23. At the same time, the mandrel 23 is tensed and breaks due to the pushing down action of the outer cylinder 5 by the movable lever 18, and as a result, the fastening of the blind rivet 22 is completed.

Furthermore, if you release your hand from the movable lever 18 after completing the riveter tightening work, the outer cylinder lifting spring 1
Due to the elastic force of 5, the outer cylinder 5 rises and the jaw 10
In order to open the jaw, the broken piece of the mandrel 23 held by the jaw 10 is moved between the jaw case pin 8, the jaw case cap 17, and the pressing cap 1.
6, and the mandrel discharge hole drilled in advance in the riveter body 1, etc., to discharge from the upper side of the riveter body 1. Also, if you remove the case pin 8 from the main body frame 1, the outer cylinder 5
can be easily removed, and parts inside the outer cylinder 5 can be easily replaced or maintenance inspection work can be performed.

Incidentally, in the above embodiment, the case where the jaw structure according to the present invention is used in a hand riveter has been explained, but as is clear from the above embodiment, the work of fastening the rivet is simply a work of pushing and lowering the outer cylinder 5. In order to perform this operation, for example, when constructing an air riveter, it is only necessary to provide an actuator on the top of the outer cylinder 5 that reciprocates using air pressure, and configure the outer cylinder 5 to be lowered by the actuator. . Further, the same applies not only to the air riveter but also to other electric riveters.

Further, in the present invention, it is not necessary to attach the nosepiece 6 to the bottom of the outer cylinder 5, and there is no problem even if the design is changed so that the bottom of the outer cylinder 5 itself comes into contact with the tip blind rivet 22 of the jaw. .

In addition, the present invention allows for arbitrary design changes in not only the specific shapes of the riveter main body and the movable lever, but also the specific configuration of each member housed in the outer cylinder 5 within the scope of the present invention. It is.

(Effects of the Invention) As described above, the present invention provides the Jyo case in a fixed state on the riveter body, and also provides the outer cylinder for storing the Jyo case so as to be movable up and down with respect to the riveter main body, so that the lowering movement of the outer cylinder is fixed. Since it is configured so that the rivet fastening work can be performed by the hand riveter, when this is applied to a hand riveter, a movable lever for lowering the outer cylinder is placed below the fixed lever part of the main body to fix the rivet. The lever can be supported on the thumb side and the movable lever can be grasped with the other four fingers, and the rivet fastening work can be performed by closing the leg of the movable lever. It has the special effect of significantly improving workability compared to hand riveters.

Further, in the present invention, since the rivet fastening work can be performed by simply lowering the outer cylinder as described above, the outer cylinder is driven by, for example, air pressure or an electric machine as a driving source to lower the outer cylinder. It also has the great effect that a mechanized riveter, such as an air riveter or an electric riveter, can be easily manufactured by providing operating equipment.

In addition, the present invention has a structure in which the Jyo case and the outer cylinder are attached to the riveter main body by the Jyo case pin, so the assembly work is simple and the outer cylinder can be removed by removing the Jyo case pin. It also has the advantage of being easy to remove, disassemble, and repair.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention,
Figure 1 is an enlarged sectional view of the main part taken along line A-A in Figure 2;
The figure is a side sectional view showing the overall configuration of the hand riveter. FIG. 3 is a side sectional view showing its operating state.
FIG. 4 shows a conventional example, in which A is a partially cross-sectional schematic front view, and B is an enlarged sectional view taken along the line D--D of A in the same figure. 1... Riveter body, 2... Insertion hole, 5...
...Outer cylinder, 7, 7... Long hole, 8... Jiyo case pin, 9... Jiyo case, 10... Jiyo, 12
... Spring, 15 ... Spring for raising the outer cylinder, 21 ... Through hole.

Claims (1)

[Claims] 1 A jyo 10 pressed downward by a spring 12 is housed in the lower part of the jyo case 9, and opens and separates when the jyo 10 comes into contact with the bottom surface of the outer cylinder 5 housing the jyo case 9. In the structure of the jill part of the riveter, which is configured to be closed at times, the outer cylinder 5 housing the jyo case 9 has elongated holes 7, which are bored in its outer peripheral wall.
The case pin 8 fixed to the riveter main body 1 is passed through the riveter main body 1 and fitted into the insertion hole 2 of the riveter main body 1 in a vertically movable manner, and the outer cylinder 5
The inner case 9 has the case pin 8 inserted through a through hole 21 bored in its outer peripheral wall and is positioned and fixed to the riveter body 1, and the upper part of the case 9 inside the outer cylinder 5 is fixed. In the position, the lower part of the part 10 inside the part part 9 is shown.
A jill part of a riveter characterized in that an outer cylinder lifting spring 15 is provided which constantly urges the outer cylinder 5 upward so as to bring the bottom side of the outer cylinder 5 into contact with the jaw 10 and close the jyo 10. structure.