JPH0320025Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a riveter used for riveting.

(Prior Art) Conventionally, there is a riveter disclosed in Japanese Utility Model Publication No. 45-23918, and as shown in FIGS. 6 and 7, the riveter main body 10
The head portion 102 of the head 1 is provided with a cylindrical portion 103, and a nose piece 104 is detachably screwed onto the lower end of the cylindrical portion 103. Further, a Jyo case 105 is provided in the cylindrical part 103, and the Jyo case 105 is provided inside the cylinder part 103.
Inside 05 are a pair of Jyo 106 and Jyoputshia 1.
07. A biasing spring 108 and the like is provided, and by operating the operating lever 109, the jaw case 105 is operated in the vertical direction, the space between the jaws 106 is reduced and the mandrel of the rivet is clamped, and the jaw case 105 is further operated in this state. By doing so, the rivet is caulked and the mandrel is torn off. In addition, in order to accommodate various mandrel diameters for rivets, there are multiple replacement nose pieces 110 that match each mandrel diameter,
111 and 112 are attached to the riveter main body 101.

(Problems to be solved by the invention) However, according to the riveter having the above structure, the nose pieces 104, 110, 111, 11
2 is screwed onto the lower end of the cylindrical portion 103,
When replacing the nosepieces 104, 110, 111, and 112, a tool such as a spanner is required, making the replacement work time-consuming and troublesome.

Therefore, in view of the above problems, the present invention aims to provide a riveter that can easily accommodate various mandrel diameters.

(Means for solving the problem) The technical means is to provide a mandrel insertion part 13 at the lower part of the cylindrical part 11 provided in the riveter main body 1, and to make the case 16 slide vertically inside the cylindrical part 11. The pair of divided joints 17 are inserted into the joint case 16, and the resilient force of the biasing spring 19 causes the joint 18 to move.
The above-mentioned jaw 17 is pressed downwardly to the small diameter conical inner circumferential surface 21 of the jaw case 16 via the lower end of the jaw 17, and the lower end of the jaw 17 is received on the lower end side of the cylindrical portion 11, and the operating body 2 is By pulling up the cylindrical portion 11 through the
In this riveter, the mandrel of the rivet inserted through the mandrel insertion part 13 is held between the jaws 17 and pulled up by narrowing the interval between the jaws 17 by sliding relative to each other. A guide plate 31 is provided rotatably around the axis, and a plurality of mandrel fitting holes 32 of different diameters are provided on the same circumference in order to communicate with the mandrel insertion part 13 on the guide plate 31.
1 is provided with a support 24 which is biased downward by a spring 7 and whose downward movement is restricted, and which is pulled up by the operating body 2, and supports the Jyo case 16 on the support 24 so as to be able to adjust its vertical position. That's what I did.

(Function) According to the present invention, the mandrel fitting hole 32 that matches the mandrel diameter of the rivet is communicated with the mandrel insertion portion 13 by rotating the guide plate 31. Next, the vertical position of the case 16 with respect to the support body 24 is adjusted. Then, the support body 24 is urged downward by the spring 7 and its downward movement is restricted, the lower end of the jaw 17 is received on the lower end side of the cylindrical part 11, and the jaw 17 is pushed by the biasing spring 19 into the jaw shaft 18. Since the lower end of the Jyo case 16 is pressed downwardly against the conical inner circumferential surface 21 having a small diameter, the Jyo 17 is moved along the conical inner circumferential surface by the vertical movement of the Jyo case 16. Due to relative sliding, the interval between the jaws 17 is expanded or contracted, and the interval between the jaws 17 is made to correspond to the mandrel diameter.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings. In Figs. It is pivoted for free movement. Each end of the riveter body 1 and the operating lever 2 has a handle 4,
5, and a lock ring 6 is provided. Reference numeral 7 denotes an expansion spring, which is attached by a roll pin 8 or the like, and elastically biases both handles 4 and 5 in the direction of separating them from each other.

The head portion 10 of the riveter main body 1 is provided with a vertical cylinder portion 11, the upper end of which is open. At the lower end of the cylindrical portion 11, a jaw adjuster body 14 is mounted which has a mandrel insertion hole 13 through which a rivet mandrel is inserted.
The mandrel insertion hole 13 of this adjustment body 14 constitutes a mandrel insertion portion. Further, a Jyo case 16 is inserted into the cylindrical portion 11 so as to be slidable in the vertical direction.
A jacket 17, a jacket 18, and a biasing spring 19 are sequentially installed inside the jacket case 1.
The upper end of 6 is screwed into the lower end of the adjusting screw rod 20 to form a lid. Here, the biasing spring 19 is compressed, and its elastic force causes the spring 19 to be compressed.
The jaw 17 is pressed against the conical inner circumferential surface 21 at the lower end of the jaw case 16 via the jaw 8.

The jaw 17 is for holding the mandrel of the rivet, and is configured in a truncated cone shape corresponding to the inner peripheral surface 21 of the jaw case 16, and consists of a pair divided in the direction of the cylinder center, and the lower end surface of the jaw 17 is formed upwardly. The upper end surface has a tapered shape that becomes smaller in diameter toward the bottom, and is movable in the vertical direction within the case 16. A cylindrical nut body (support body) 24 is screwed into the male threaded portion 23 of the adjustment screw rod 20 so as to be able to move forward and backward. An operation cap 25 for use is screwed on.

The nut body 24 is configured to have a larger diameter than the housing 16, and has a stepped portion 2 provided on the inner circumferential surface of the cylindrical portion 11.
6 from above so as to be able to come into contact with and separate from it freely,
Further, a recess 28 is formed on the outer circumferential surface of the nut body 24, into which a fork-shaped operating portion 27 at the end of the operating lever 2 engages.

The lower end face of the jaw adjuster 18 and the upper end face of the jaw adjuster 14 are connected to both jaws 17, respectively.
Both jaws 17 are in contact with the tapered upper and lower end surfaces of
are configured in a corresponding tapered shape to separate them from each other.

A disc-shaped guide plate 31 is attached to the outer surface of the lower end of the cylindrical portion 11 via a mounting screw 30 so as to be freely rotatable around an axis in the vertical direction. A plurality of mandrel fitting through holes 32 of different sizes and diameters are provided at predetermined intervals on the same circumference for the passage. In this example, the rivet size is 2.4mm in diameter and 3.2mm in diameter.
Mandrel fitting through holes 32 are formed to correspond to four types of mandrel diameters: mm, 4.0 mm, and 4.8 mm, and corresponding scales are provided as shown in FIG. 3. Further, in FIG. 1, reference numeral 34 denotes a positioning mechanism, in which a spring 36 and an engaging ball 37 are provided in a hole 35, and the ball 37, which is biased by the elastic force of the spring 36, is inserted into each mandrel fitting through hole 32. The guide plate 31 is configured to be positioned by being removably engaged.

The lower side wall of the cylindrical portion 11 is provided with a case 1.
Opening window 39 so that the lower end surface of 6 can be viewed from the outside.
is formed on the side wall of the opening window 39,
A predetermined adjustment scale 4 is provided at a predetermined position corresponding to each outer diameter of the mandrel fitting hole 32 provided in the guide plate 31.
0 is set.

Then, as shown in FIG. 4, when the operating cap 25 is rotated and the adjusting screw rod 20 is screwed against the nut body 24, the case 16 is moved relative to the downward direction of the cylindrical portion 11. be done. On this occasion,
Since the lower end surface of the jaw 17 is in contact with the upper end surface of the jaw adjuster 14, the jaw 17 is relatively moved upward within the jacket case 16. Since the conical inner circumferential surface 21 of the jaw case 16 is tapered so that the diameter gradually increases upward, each jaw 17 becomes larger than the other due to the taper between the upper end surface of the jaw adjuster 14 and the lower end surface of the jaw adjuster 18. The mandrels are separated and can hold a mandrel with a larger diameter. Further, as shown in FIG. 5, when the operating cap 25 is rotated and the adjusting screw rod 20 is screwed back from the nut body 24, the jo case 16 is moved upward relative to the cylindrical portion 11. . At this time, the jyo 17 is moved relatively downward within the jyo case 16, and since the conical inner circumferential surface 21 of the jyo case 16 is tapered so that the diameter gradually decreases downward, each jyo 17 is moved relative to the inside of the jyo case 16. The space between them becomes narrower, making it possible to hold mandrels with a smaller diameter. As mentioned above, the adjustment screw rod 20, the nut body 24, the operation cap 25,
The jaw adjuster 14, the jaw case 16, the jaw pusher 18, and the like constitute an interval adjustment mechanism for adjusting the distance between the pair of jaws 17. The operability can be improved by appropriately providing marks on the upper surface of the operating cap 25 for a large operation direction that increases the interval between the jaws 17 and a small operation direction that decreases the interval between the jaws 17.

The embodiment of the present invention is constructed as described above. For example, when riveting a 2.4 mm diameter rivet, the guide plate 31 is rotated and the 2.4 mm diameter rivet is driven.
mm mandrel insertion hole 32 to mandrel insertion hole 1
3, then grip both handles 4 and 5 in the closed state, rotate the operating cap 25, and as shown in FIG.
It is sufficient to match the adjustment scale 40 for 2.4 mm on the side of 9. As before, the mandrel of the rivet is inserted into the mandrel insertion hole 32 and the mandrel insertion hole 1.
3 is inserted and the operating lever 2 is rotated, the rivet is caulked as desired, the mandrel is torn off, and the desired rivet is driven. Next, when riveting a rivet with a different diameter such as a 3.2 mm rivet or a 4.8 mm rivet, the guide plate 31 is rotated to align the desired mandrel insertion hole 32 with the mandrel insertion hole 1 in the same manner as described above.
3 and align the case 16 with the desired adjustment scale 40. As mentioned above,
It is only necessary to rotate the guide plate 31 and adjust the vertical position of the jaw case 16 using the interval adjustment mechanism, and there is no need for any tools such as spanners, and it is possible to easily accommodate various mandrel diameters.
Further, the adjustment scale 40 allows the vertical position of the case 16 to be easily adjusted.

(Effects of the invention) According to the invention, a mandrel insertion part is provided at the lower end of the cylinder provided in the riveter body, and the Jyo case is slidably inserted in the vertical direction into the cylinder part.
A pair of divided joints are housed inside the joint case, and the resilient force of the biasing spring pushes the joints downwardly toward the lower end of the joint case against the inner peripheral surface of a conical shape with a small diameter. , and the lower end of the jaw is received on the lower end side of the cylinder,
By pulling up the cylindrical part through the operating body, the jaws slide relative to each other along the conical inner circumferential surface, and the interval between the jaws is narrowed, and the mandrel of the rivet inserted through the mandrel insertion part is moved between the jaws. In the riveter which is designed to be pulled up by holding the cylinder, a guide plate is provided at the lower end of the cylinder so as to be freely rotatable about an axis in the vertical direction, and the guide plate has a guide plate having different diameters on the same circumference so as to be in communication with the mandrel insertion part. A plurality of mandrel fitting holes are provided in the cylindrical portion, and a support body is provided in the cylindrical portion that is biased downward by a spring and whose downward movement is restricted, and which is pulled up and operated by an operating body. It is adjustable and supported, and by rotating the guide plate, the desired mandrel insertion hole is communicated with the mandrel insertion part, and the vertical position of the jiyo case is adjusted relative to the support body, so that the distance between the pair of jiyos can be expanded or contracted as desired. It only needs to be adjusted, no tools such as spanners are required, and it can easily accommodate various mandrel diameters, which has a great practical effect.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of main parts showing an embodiment of the present invention, Fig. 2 is an overall side view, Fig. 3 is a view taken along the line shown in Fig. 1, and Figs. 4 and 5 are main parts showing the operating state. 6 is a side view showing a conventional example, and FIG. 7 is a sectional view of a conventional example.
It is a figure-line sectional view. 1... Riveter body, 10... Head part, 1
3...Mandrel insertion hole, 16...Jiyo case, 17...Jiyo, 18...Jiyo pusher,
19... Biasing spring, 21... Inner peripheral surface, 31... Guide plate, 32... Mandrel fitting hole, 39... Opening window, 40... Adjustment scale.

Claims (1)

[Claims for Utility Model Registration] (1) A mandrel insertion portion 13 is provided at the lower end of the cylindrical portion 11 provided in the riveter main body 1, and the cylindrical portion 11
A jyo case 16 is inserted into the jyo case 16 so as to be slidable in the vertical direction, and a pair of jyo 17 formed separately are housed inside the jyo case 16, and the jyo 17 is moved through the jyo pusher 18 by the elastic force of the biasing spring 19. The lower end of the jaw case 16 is pressed downwardly against the conical inner peripheral surface 21 having a small diameter, and the lower end of the jaw 17 is received on the lower end side of the cylindrical part 11, and the cylindrical part 11 is pulled through the operating body 2. By raising it, the jaws 17 relatively slide along the conical inner circumferential surface 21, the interval between the jaws 17 is narrowed, and the mandrel of the rivet, which is inserted through the mandrel insertion part 13, is held between the jaws 17 and pulled. In the riveter which is designed to be raised, a guide plate 31 is provided at the lower end of the cylindrical portion 11 so as to be freely rotatable around an axis in the vertical direction, and the guide plate 31 has a guide plate 31 having different diameters on the same circumference so as to communicate with the mandrel insertion portion 13. A plurality of mandrel fitting holes 32 are provided in the cylindrical portion 11, and a support body 24 is provided in the cylindrical portion 11, which is biased downward by a spring 7, whose downward movement is restricted, and which is pulled up by the operating body 2. This riveter is characterized in that a body 24 supports a Joe case 16 in a vertically adjustable manner. (2) A case 16 is attached to the lower side wall of the cylindrical portion 11.
An opening window 39 is provided for visually checking the vertical position of the guide plate 31, and an adjustment scale 40 is provided on the side of the opening window 39 corresponding to the hole diameter of each mandrel fitting hole 32 provided in the guide plate 31. A riveter according to claim 1 of the utility model registration claim characterized by: