An adjustable riveter

Abstract: This invention relates to an adjustable riveter and in particular to one including a head portion (1) with a vertical through hole (13) and an inclined surface (16) with an angle of 45 degrees, a tubular member (11) integrally formed with the lower part of the head portion (1), a lever (2) pivoted within the head portion (1), two axial plates (4,5) fixedly mounted on a recess of the inclined surface (16) of the head portion (1), a threaded sleeve (7) extending through the axial plates (4,5) and the head portion (1) and kept in place by a nut (71), a transmission rod (3) extending through the threaded sleeve (7) and provided with two spaced flanges (33,34), a handle (6) having an inclined surface (61) of 45 degrees at one end and two vertical arms (64) with a stepped hole (641), a fork-like arm (9) having a front curved portion (921) pivotally connected with the handle (6) and a rear curved portion (922) connected with a sleeve (8) and two stepped pins (21,641) disposed in the stepped holes (18,641) of the head portion (1) and the handle (6), whereby the head portion (1) of the adjustable riveter can be regulated in angle to adapt to different working conditions.

Description: This invention relates to an adjustable riveter comprising a head portion, a handle and a fork-like pressure arm. It is found that riveting is widely used to fasten two or more pieces of material by passing the shank of a headed pin (rivet) through a hole in each piece and deforming the end of the pin to form a second head. Hence, riveters have been developed to meet this need. However, none of them can be used both in low and high positions. As such, it is necessary for a worker to carry two kinds of riveters for low and high positions respectively, thus causing much inconvenience to the worker. A riveter has been described (EP-A-036210) having a jaw case, the orientation of which is changeable as desired in accordance with the shape of the work to be riveted. This riveter is comprising a turnable jaw case actuating support member disposed within a forward end portion of a frame main body an mounted on a pivot for supporting a lever on the frame main body, coupling means capable of locking the actuating support member in a plurality of positions relative to the lever and displaced from each other through a predetermined angle Θ, a jaw case turnable supported by the actuating support member excentrically of the pivot and reciprocally movable straight by a reciprocal turn of the lever through reciprocal turn of the actuating support member connected to the lever, and a jaw case tubular housing turnably supported by the forward end portion of the frame main body and lockable thereto in a plurality of positions angularly spaced from each other by the same angle as the angle of displacement Θ. Since the jaw case tubular housing of this riveter has to be positioned with bar and two threaded bores in an upper and a lower position, it cannot be used as easily as desired. It is, therefore, an object of the present invention to provide an adjustable riveter which can be regulated to adapt to low an high working positions, without the help of any tools and without dismantling any component parts thereof. It is still another object of the present invention to provide an adjustable riveter which is simple in construction. It is still another object of the present invention to provide an adjustable riveter which ist economic to produce. It is a further object of the present invention to provide an adjustable riveter which is facile to manufacture. These objects are solved by the features as defined in the claim. The invention is explained in more detail by means of the accompanying drawings in which FIG. 1 is an exploded view of an adjustable riveter according to the present invention; FIG. 2 is a sectional view of the adjustable riveter; FIG. 3 is a working view of the adjustable riveter with the head portion at normal position; FIG. 4 is a working view of the adjustable riveter with the head portion at angular position; FIG. 5 is an exploded view of a prior art riveter with an angular head portion; and FIG. 6 is an exploded view of a prior art riveter with a straight head portion. For purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings. Specific language will be used to describe same. It will, nevertheless, be understood that no limitation of the scope of the invention is thereby intended, such alternations and further applications of the principles of the invention as illustrated herein being contemplated as would normally occur to one skilled in the art to which the invention relates. With reference to the drawings and in particular to FIG. 1 thereof, the adjustable riveter according to the present invention comprises a head portion 1 with a vertical through hole 13. A tubular member 11 is integrally formed with the lower part of the head portion 1. On one side 14 of the head portion 1 there is an inclined surface 16 with an angle of 45 degrees. The vertical through hole 13 extends downwardly from the top of the head portion 1 to the tubular member 11 forming a space 15. The inclined surface 16 has a recess with threaded holes 161 at four sides and a through hole 17 at the center. A lever 2 is provided in the space 15 by a pin 21 through a stepped hole 18 of the head portion 1 and a through hole 22 thereof and then kept in position by a sleeve 211 and a retainer ring 212. Both ends of the lever 2 has a lug 23 with a fringe 24 adapted to engage with a slot 21 of the sleeve 12 and a neck 31 of a transmission rod 3. Two axial plates 4 and 5, rectangular in shape, are separately fixed on the recess of the inclined surface 16 of the head portion 1 by screws 41 and 51 and a recess 61 in the front portion of a handle 6. The axial plate 4 is further formed with two blind holes 42 for receiving two compressed springs 43 and steel balls 44. The axial plate 5 is also formed with corresponding grooves 52 for confining the compressed springs 43 and steel balls 44. The axial plates 4 and 5 have two center holes 45 and 53 so that a threaded sleeve 7 can be inserted through a hole 62 of the handle 6 and the center holes 45 and 53 of the axial plates 4 and 5 and the center hole 17 of the head portion 1 and then engaged with a nut 71. The transmission rod 3 extends through the above-mentioed parts and connects with a joint 8 at the threaded end 32 thereof. On the lower part of the transmission rod 32 there are two separated fringes 33 and 34 forming a space therebetween. The handle 6 has a front end with an inclination of 45 degrees and a stopper 63 at the other end. On two vertical arms 64 of the handle 6 there is a stepped hole 641. A fork-like press arm 6, with two throngs 92 each having a front curved portion 921 and a rear curved portion 922 respectively formed with two pin holes 93 and 94, is disposed on the handle 6. A pin 641 extends through the hole 93 of the front curved portion 921 and out of the vertical plate 64 of the handle 6 to engage with a collar 642 and is kept in position by a retainer ring 643. A pin 941 passes through the hole 94 of the rear curved portion 922 and an elongated slot 81 of the joint 8 thereby enabling the joint 8 to move along the handle 9. Looking now at FIGS. 2 and 3, when not in use, the lever will urge the sleeve 12 to move to the lower position and the transmission rod is disposed at the upper position. When the sleeve carries a rivet, press the press arm which will in turn force the transmission rod to move downwards. Hence, the the lever will be activated to turn upwards via the stepped pin thereby achieveing the purpose of riveting. When desired to change the angle of the head portion 1 of the adjustable riveter, simply turn the head portion 1 to press the steel balls to leave the grooves. As the head portion 1 rotates through an angle of 180 degrees, the steel balls will go back into the grooves to form a riveter as shown in FIG. 4. Although this invention has been desribed with a certain degree of particularity, it is understood that the present disclosure is made by way of example only and that numerous changes in the construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.

Claims: An adjustable riveter comprising a head portion (1), a handle (6) and a fork-like pressarm (9), the head portion (1) having a vertical through hole and an inclined surface (16) having a recess with threaded holes (161) at four sides and a through hole (17) at the center, a tubular member (11) integrally formed with the lower part of said head portion (1), a lever (2) pivoted within said head portion (1), two axial plates (4, 5) fixedly mounted on the top of the inclined surface (16) of the head portion (1), the first axial plate having blind holes (42) for receiving compressed springs (43) and steel balls (44) while the second axial plate having corresponding grooves (52) for confining the compressed springs (43) and steal balls (44), a threaded sleeve (7) with a top flange, extending through said axial plates (4, 5) and said head portion (1) and kept in position by a nut (71), a transmission rod (3) extending through said threaded sleeves (7) and provided with two spaced flanges (33, 34), the handle (6) having a stopper (63) at the one end, and two vertical arms (64) with a stepped hole therein, the fork-like press (9) arm having a front curved portion (921) pivotally connected with said handle (6) and rear curved portion (922) pin connected with a sleeve and two stepped pins disposed in the stepped holes of said head portion (1) and said handle (6) and kept in place by a retainer ring (212), and wherein the inclined surface (16) on one side (14) of the head portion (1) has an angle of 45°, the handle (6) has a front end with inclination of 45°, and the front end of said handle (6) is attached to the inclined surface (16) of the head portion (1) in such way that the head portion can be rotated against the handle (6) around an axis orthogonal to the inclined surface.

Inventors: LIU YANG TEIN, LIU, YANG TEIN
Applicants: LIU YANG TEIN, LIU, YANG TEIN
Application year: 1988
Main classification: B21J15
IPC codes: B21J15