JPS6320439Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a hand riveter.

Generally, in order to perform riveting work by pulling up the core material 3 of the blind rivet 1 shown in FIG. 1 or the anchor rivet 2 shown in FIG. A mounted hand riveter is used. There are conventional hand riveters that can change the direction of the head relative to the frame depending on the conditions at the riveting work site. However, in conventional hand riveters of this type, the work of changing the direction of the head is complicated. That is, when changing the direction of the head, operations such as releasing and re-fixing the head, and disconnecting and re-connecting the lifting mechanism and its lifting operation lever are performed individually. Therefore, there was a problem of lowering work efficiency.

In view of the above, the present invention aims to solve the above problems by providing a hand riveter that can change the direction of the head simply by rotating the reset lever, and its features include:
A frame 7 to which an operating lever 8 is rotatably attached, a cylindrical head 5 attached to the front end of the frame 7, and a lifting mechanism 4 built into the head 5.
In the hand riveter 6, the riveting work is performed by reciprocating the lifting mechanism 4 within the head 5 by rotating the operating lever 8,
Positioning plate 18 with a head 5 connected to its rear end
It is attached to the front end of the frame 7 via a pin 14 so as to be rotatable around the pin 14, and a required number of engaged parts 19 are provided on the periphery of the positioning plate 18 to restrict the rotation of the head 5 at a predetermined position. A reset lever 20 is provided at a position corresponding to the engaged portion 19 and is rotatably attached to the frame 7, and is rotatably attached to the engaged portion 19. A spring 21 is provided to bias the reset lever 20, a rotary plate 31 is attached to the frame 7 so as to be rotatable about the pin 14, and the lifting mechanism 4 is attached to the rotary plate 31 as the head 5 rotates. The rotating plate 31 is pivoted so as to rotate around the pin 14 due to the rotation of the pulling mechanism, and is engaged with the peripheral edge of the rotating plate 31 at a position corresponding to the position of the engaged portion 19 of the positioning plate 18. Part 32
is provided, and one end 35 of a swing link 34 is rotatably attached to the operating lever 8 so that the rotating plate 31 and the operating lever 8 are interlocked so that the lifting mechanism 4 can be reciprocated by rotation of the operating lever 8. The other end 36 of the swing link 34 is removably engaged with the engaged portion 32 of the rotary plate 31, and the swing link 34 moves in the direction of engagement between the other end 36 of the swing link 34 and the engaged portion 32 of the rotary plate 31. The reset lever 20 is provided with a latching portion 23 , the swing link 34 is provided with a latched portion 37 , and the latching portion 23 is provided with a latched portion 37 .
and the latched portion 37 are removably engaged with each other by rotation of the operating lever 8, and the engagement between the latched portion 23 and the latched portion 37 causes the reset lever 20 and the swing link 34 to be engaged with each other. is capable of swinging together in the direction of engagement and disengagement with each of the engaged parts 19 and 32, and the rotation of the head 5 around the pin 14 and the rotation of the rotary plate 31 accompanying the rotation of the head 5 are supported. To prevent circumferential deviation,
A means for positioning the relative positions of the positioning plate 18 and the rotating plate 31 in the circumferential direction with respect to the pin 14 is provided.

Embodiments of the present invention will be described below with reference to the drawings.

2 to 4, the hand riveter 6 includes a frame 7, an operating lever 8, a cylindrical head 5, and a lifting mechanism 4 built into the head 5.

The frame 7 is a die-cast molded product, and includes a pair of opposing side walls 7a and 7b, a bottom wall 7c connecting the side walls 7a and 7b below, and both side walls 7 above the front end.
It has a spring receiving part 9 provided on the upper surface of the front end of the upper wall 7d and the bottom wall 7c that connect the parts a and 7b. Then, remove the three replacement nose pieces 1 from the bottom of the bottom wall 7c.
0, 10, 10 are screwed on. Further, a grip cover 12 to which a chain 11 is attached is attached to the rear end of the frame 7.

The operating lever 8 is made of steel and has a pair of opposing side walls 8a and 8b, and an upper wall 8c that connects the side walls 8a and 8b above, and the distance between the side walls 8a and 8b is narrowed at the front end thereof. A grip cover 13 is attached to the rear end of the operating lever 8, and a chain 11 of the grip cover 12 of the frame 7 is hung thereto to prevent it from opening.

The operating lever 8 is inserted from above the frame 7, and is rotatably attached to the frame 7 at the front end via a pivot pin 14 inserted through the operating lever side walls 8a, 8b and the frame side walls 7a, 7b. Further, one end of a release spring 16 wound around a spring pin 15 attached to the frame 7 engages with the spring receiving portion 9 of the frame 7, and the other end engages with the operating lever 8, thereby opening the operating lever 8. It is biased in the direction.

Next, the head 5 has a cylindrical shape, and a nose piece 17 is screwed onto the tip thereof. Further, a pair of disc-shaped positioning plates 18, 18 are provided in series at the rear end of the head 5, facing each other. The head 5 is rotatably attached to the front end of the frame 7 via the positioning plates 18, 18. That is, positioning plates 18, 18 are attached to the pivot pin 14 on which the operating lever 8 is supported, between each side wall 8a, 8b of the operating lever 8 and each side wall 7a, 7b of the frame 7, respectively.
Each is rotatably supported.

Here, the rotation of the head 5 with respect to the frame 7 is
Each positioning plate 18,
Three pairs of notches are provided on the periphery of 18 at intervals of about 45 degrees in center angle to form engaged parts 19, 19, 19, 19, 19, 19.
It is said that and an arbitrary pair of engaged parts 19,
A reset lever 20 is rotatably attached to the frame 7 and is detachable from the engaged portion 19.
9, 19 and the reset lever 20 in the direction of engagement with the reset lever 20.
1 is provided. As shown in FIG. 6, this reset lever 20 has both side walls 20a and 20b and a dog-shaped bottom wall 20c connecting them, and an engaging portion 22 formed upward from the front end of the bottom wall 20c is used for positioning. Any pair of engaged parts 1 of plates 18, 18
9 and 19, so that it can be freely engaged and detached. Note that a hooking portion 23 projects rearward from the center of the engaging portion 22. The reset lever 20 is attached to the frame 7 via a reset lever pin 24 inserted through its side walls 20a and 20b, and the rear of the bottom wall 20c of the reset lever 20 protrudes from the lower end of the frame 7, so that it can be rotated freely. has been done. Then, one end of the reset spring 21 wound around the reset lever pin 24 is engaged with the spring pin 15, and the other end is engaged with the bottom wall 20c of the reset lever 20, so that the engaging portion 22 of the reset lever 20 is closed. and any pair of engaged parts 19, 19 of the positioning plates 18, 18.
The reset lever 20 is biased in the direction of engagement. Note that FIGS. 2 to 4 show the engaging portion 22 and the engaged portion 1 so that the tip of the head 5 is restrained in a downward position.
9 and 19 are engaged.

Next, in the lifting mechanism 4, a cylindrical case 26 is inserted into the head 5 via a case spring 25 so as to be able to reciprocate vertically, and a pair of cases 27 and 2 are attached to the inner periphery of the tip of the case 26.
7 is fitted to be vertically movable, and the jaws 27, 27
The engine shear spring 29 that presses and biases the engine case 2
6. The lifting mechanism 4 is connected to a pair of rotary plates 31 and 31 at the upper end of the Joe case 26 via a center pin 30.
It is pivoted to.

The rotating plates 31, 31 are a pair of opposing discs, and have an upper wall 31a connecting the rotating plates 31, 31. Each rotary plate 31, 31 is rotatably supported by a pivot pin 14 between each side wall 8a, 8b of the operating lever 8 and each positioning plate 18, 18, respectively. Then, three pairs of engaged portions 1 are provided on the periphery of each rotating plate 31, 31, on the periphery of each positioning plate 18, 18.
Three pairs of notches are also provided at the same central angular interval to correspond to the positions 9, 19, 19, 19, 19, 19, forming engaged portions 32, 32, 32, 32, 32, 32. Here, 33 is a positioning pin that is supported between the positioning plates 18 and 18 and
It is in contact with 1c. The rotary plates 31, 31 and the operating lever 8 are interlocked and connected via a swing link 34. That is, as shown in FIG. 5, the swing link 34 has a pair of opposing side walls 34a and 34b, and a top wall 34c and a bottom wall 34d that connect them.
One end 35 has a shaft support hole 35a on the side walls 34a, 34b.
An engaging portion 36a is provided at the other end 36 to protrude from the outer surface of the side walls 34a, 34b.
Note that from the front end of the bottom wall 34b there is an L-shaped hooked portion 3.
7 is provided protrudingly. The swing link 34 is rotatably attached to the operating lever 8 via a link pin 38 inserted into a shaft support hole 35a at one end 35, and the engaging portion 36a at the other end 36 is connected to the rotating plates 31, 35.
It can be freely engaged with and disengaged from any pair of engaged parts 32, 32 of 1. One end of the swing link spring 39 wound around the link pin 38 is engaged with the operating lever 8, and the other end is engaged with the upper wall 34c of the swing link 34, thereby moving the swing link 34 to the rotating plate 3.
1 and 31 in the direction of engagement with any pair of engaged parts 32 and 32.

Then, by rotating the reset lever 20, the engaging portion 22 of the reset lever 20 and the positioning plate 1 are connected to each other.
At the same time as the engagement with the engaged parts 19, 19 of the swing link 34 is released, the engaging part 36a of the other end 36 of the swing link 34 and the engaged parts 32, 32 of the rotating plates 31, 31 are released.
The reset lever 20 is disengaged from the
and the swing link 34 are engaged. In this embodiment, the latching portion 23 of the reset lever 20 and the swing link 34
The latched portion 37 is removably engaged so that it is engaged when the operating lever 8 is closed and disengaged when it is opened.

Next, the operation of this embodiment will be explained together with the effects.

First, when the operating lever 8 is rotated in the opening direction, the swing link 34 is pulled up as shown in FIG. 3, and the rotary plates 31, 31 are rotated accordingly.
Then, the lifting mechanism 4 pivotally connected to the rotating plates 31, 31 moves downward within the head 5, and the jaws 27, 31 move downward within the head 5.
27 comes into contact with the upper end surface of the nosepiece 17 and becomes open inside the case 26. Then, with these jaws 27, 27, as shown in FIG.
The operator grips the core material 3 of the rivet 1, rotates the operating lever 8 in the closing direction, pulls up the core material 3 of the rivet 1, and performs the riveting work.

Further, as shown in FIG. 7, when the reset lever 20 is rotated in the direction of arrow A in the figure with the operation lever 8 closed, the engaging portion 22 of the reset lever 20 is rotated.
The engagement of the positioning plates 18, 18 with the engaged parts 19, 19 is released, and at the same time, the swing link 34 is released.
rotates around the link pin 38 and the swinging link 3
4, the engagement between the engaging portion 36a of the other end 36 and the engaged portions 32, 32 of the rotary plates 31, 31 is released. When the head 5 is rotated in the direction of arrow B in the figure so that its tip faces forward, the lifting mechanism 4 lifts the head 5.
The rotating plate 31,
31 also rotates. Since the positioning pin 33 is in contact with the upper wall 31a of the rotary plates 31, 31, no deviation occurs between the rotation of the rotary plates 31, 31 and the rotation of the head 5. Next, as shown in FIG. 8, when you release your hand from the reset lever 20 with the tip of the head 5 facing forward, the reset lever 20 and the swing link 3
4 are biased in the engaging direction by the reset spring 21 and the swing link spring 39, respectively, so that the engaging portion 22 of the reset lever 20 is pressed again.
The engaged portions 19, 19 of the positioning plates 18, 18, the engaging portion 36a of the other end 36 of the swing link 34, and the engaged portions 32, 32 of the rotating plates 31, 31 are engaged. This allows riveting work to be performed with the tip of the head 5 facing forward. Also, the tip of the head 5 can be directed in a direction intermediate between downward and forward directions in the same manner. In this way, reset lever 2
Since the direction of the head 5 can be changed between forward, downward, and an intermediate direction with only a zero rotation operation, high efficiency of the work can be achieved. Note that the orientation of the head 5 is not limited to the above three directions, but can be directed in any direction by providing engaged portions 19 and 32 on the positioning plate 18 and the rotary plate 31 as appropriate. The lifting mechanism 4 is the blind rivet 1 shown in FIG.
The anchor rivet 2 may be used not only for the anchor rivet 2 shown in FIG.

According to the present invention, in the hand riveter 6, the head 5 is attached to the front end of the frame 7 via the positioning plate 18 connected to the rear end so as to be rotatable about the pin 14, and the rotation of the head 5 is controlled to the desired position. A required number of engaged parts 19 are provided on the periphery of the positioning plate 18 at positions corresponding to the positions of the heads 5, and a reset lever 20 that can be freely engaged with and detached from the engaged parts 19 is provided on the frame 7. A spring 21 is provided which is rotatably attached and biases the reset lever 20 in the direction of engagement between the engaged portion 19 and the reset lever 20, and a rotary plate 31 is attached to the frame 7 to rotate about the pin 14. The lifting mechanism 4 is freely attached to the rotary plate 31.
The rotating plate 31 is pivotally attached to rotate around the pin 14 by the rotation of the lifting mechanism accompanying the rotation of the head 5, and the positioning plate 18 is attached to the periphery of the rotating plate 31.
The engaged part 3 is located at a position corresponding to the engaged part 19 position.
2 are provided, a rotary plate 31 and the operating lever 8,
A swing link 34 is used to connect the lifting mechanism 4 in a reciprocating manner by rotating the operating lever 8.
One end 35 is rotatably attached to the operating lever 8, and the other end 36 is detachably engaged with the engaged portion 32 of the rotary plate 31. A spring 39 is provided that urges the swinging link 34 in the direction of engagement with the engaging portion 32, a locking portion 23 is provided on the reset lever 20, a latched portion 37 of the swinging link 34 is provided, Latch part 2
3 and the latched portion 37 are removably engaged with each other by rotation of the operating lever 8, and the engagement between the latched portion 23 and the latched portion 37 causes the reset lever 20 and the swinging link 34 to be engaged with each other. The pin 14 of the head 5 can swing together in the direction of engagement and disengagement with each of the engaged parts 19 and 32.
The positioning plate 18 and the rotary plate 3 relative to the pin 14 are arranged so that there is no deviation in the circumferential direction between the rotation of the head 5 and the rotation of the rotary plate 31 accompanying the rotation of the head 5.
1, the direction of the head 5 can be changed depending on the situation of the work place by simply rotating the reset lever 20, which is more effective than conventional hand riveters. Work efficiency can be extremely improved.

[Brief explanation of the drawing]

1 is a cross-sectional explanatory diagram of the riveting work of a blind rivet, FIG. 1 and FIG. 2 are cross-sectional explanatory diagrams of the riveting work of an anchor rivet, and FIGS. 2 to 8 relate to embodiments of the present invention, Figure 2 1 is a plan view of the hand riveter, Figure 2 2 is a front view of the same,
Fig. 3 is a side view of the same side, Fig. 3 is an enlarged sectional view of the main part showing the state of the hand riveter with the operating lever open, Fig. 4 is a sectional view taken along line a-a of Fig. 2, and Fig. 5 1 is the swing link. 5.2 is a front view of the same, and FIG. 5.3 is a plan view of the same.
6 is a side view of the same, FIG. 6 1 is a plan view of the reset lever, FIG. 6 2 is a side view of the same, FIG.
The figure is an enlarged sectional view of the main parts of the hand riveter with the head facing forward. 4... Pulling mechanism, 5... Head, 6... Hand riveter, 7... Frame, 8... Operating lever, 18... Positioning plate, 19... Engaged portion,
20... Reset lever, 21... Reset spring, 31... Rotating plate, 32... Engaged portion, 3
4... Swinging link, 35... One end of swinging link, 3
6... Swing link other end, 39... Swing link spring.

Claims (1)

[Scope of utility model registration request] It is equipped with a frame 7 to which an operating lever 8 is rotatably attached, a cylindrical head 5 attached to the front end of the frame 7, and a lifting mechanism 4 built into the head 5. In a hand riveter 6 in which riveting work is performed by reciprocating the lifting mechanism 4 within the head 5, the head 6 is rotatably attached to the front end of the frame 7 about a pin 14 via a positioning plate 18 connected to the rear end. A required number of engaged portions 19 are provided on the periphery of the positioning plate 18 at positions corresponding to the positions of the head 5 in order to restrain the rotation of the head 5 at a predetermined position. A reset lever 20 is rotatably attached to the frame 7, and is provided with a spring 21 that biases the reset lever 20 in the direction of engagement between the engaged portion 19 and the reset lever 20. 31 is attached to the frame 7 so as to be rotatable around the pin 14, and the lifting mechanism 4 is attached to the rotating plate 31.
The rotating plate 31 is pivotally attached to rotate around the pin 14 by the rotation of the pulling mechanism in conjunction with the rotation of the head 5, and corresponds to the position of the engaged portion 19 of the positioning plate 18 on the periphery of the rotating plate 31. The engaged portion 32 is placed in the position where
is provided, and the rotary plate 31 and the operating lever 8 are
A swing link 34 is used to connect the lifting mechanism 4 in a reciprocating manner by rotating the operating lever 8.
One end 35 is rotatably attached to the operating lever 8, and the other end 36 is detachably engaged with the engaged portion 32 of the rotary plate 31. A spring 39 is provided that urges the swinging link 34 in the direction of engagement with the engaging portion 32, a locking portion 23 is provided on the reset lever 20, a latched portion 37 is provided on the swinging link 34, Latch part 2
3 and the latched portion 37 are removably engaged with each other by rotation of the operating lever 8, and the engagement between the latched portion 23 and the latched portion 37 causes the reset lever 20 and the swinging link 34 to be engaged with each other. The pin 14 of the head 5 can swing together in the direction of engagement and disengagement with each of the engaged parts 19 and 32.
The positioning plate 18 and the rotary plate 3 relative to the pin 14 are arranged so that there is no deviation in the circumferential direction between the rotation of the head 5 and the rotation of the rotary plate 31 accompanying the rotation of the head 5.
1. A hand riveter characterized in that the hand riveter is provided with means for positioning the relative position in the circumferential direction with respect to the hand riveter.