JPH0753786Y2 - Air fastener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an air fastener developed for pushing and straddling an L-shaped corner member between plate flanges of a duct and for caulking.

<Prior art> Both ducts with a plate flange are No. 61-17588 and 61.
-142986 and 61-142987 have already proposed. In these publications, both inner and outer wing portions of an L-shaped corner member that are fitted between plate flanges of a duct are provided on a ridge or a protrusion or a paragraph groove of a duct, and a bag folding portion or a folded end surface is provided on an inner surface of a hook portion of a plate flange. It is described that it is sandwiched between and.

<Problems to be Solved by the Invention> However, when the L-shaped corner member is fitted between the plate flanges of the duct, a strong resistance is exerted until it gets over the projection on the duct or is fitted into the paragraph groove. There is a problem that this is not easy, and the L
There is a problem that the shaped corner member may come off due to an impact or the like.

<Means for Solving the Problems> The present invention fits an advancing / retreating member that is advanced and retracted by air pressure in a tubular body, and inserts a scissor member that is sandwiched between the advancing and retracting member and that opens and closes by advancing and retracting the advancing and retracting member, L on one of the tips of the scissors member
A hook plate in the shape of a letter is attached, and on the other side, a pushing plate having a tip as a pushing surface by hooking in the direction of the hanging plate is attached, and a caulking member is provided on the inner surface of the base of the pushing plate so as to project. It is intended to solve such a problem.

<Function> Both L-shaped corner members are applied to the duct side between the plate flanges, the hooking plates are hooked to the outer surface of the plate flanges, and the pushing surface at the tip of the pushing plate is placed on the inner surface of the L-shaped corner member toward the duct. It is applied and the air fastener is sandwiched and closed. When the advancing / retreating member moves forward by air pressure to close the scissors member, the pushing plate closes in the direction of the hooking plate to press the duct side surface of the L-shaped corner member, and the inner strip plate of the L-shaped corner member. Part over the ridge and pushed into the end of the duct, and the outer inclined end of the L-shaped corner member is hooked to the inner end of the folded part provided on the outer hooked part of the plate flange, and then the air fastener is temporarily attached. Open and remove the caulking member against the outer surface of the outer flange of the plate flange to re-close the air fastener to hook the outer inclined end of the L-shaped corner member, and the first half of the outer hook of the plate flange. Is pressed and folded, and the outer slanted end of the L-shaped corner member is prevented from being bitten and fixed.

<Example> An example will be described below with reference to the drawings.

FIGS. 1 and 2 show an air fastener, in which an air hose 2 is detachably connected to the base of a hand-held tubular main body 1 and an operation plate 4 that pushes and moves based on a hinge 3 is attached. . 5 is an opening / closing member of the air passage 6 and a plate 4
When the push rod 7 provided on the lower surface of the base side is pushed down, the air passage 6 is opened, and when the push is released, the lower spring 8 is pushed up to close the air passage 6. Reference numeral 9 denotes an advancing / retreating member fitted in front of the air passage 6, which advances by air pressure when the air passage 6 is opened, and retreats by return pressure of the spring 10 when the air pressure is released. The advancing / retreating member 9 is open at the front surface and is provided with tapered grooves 9a and 9b on the upper and lower inner surfaces, which are narrowed in the front and rear directions, and the rear end is fitted to the front opening portion so that the scissors member 11 is fixed by the pin 12. 11
a is a return spring. The scissor member 11 gradually fits deeply into the tapered grooves 9a and 9b when the advancing / retreating member 9 moves forward, and closes, and when the retracting member 9 moves backward, it opens.

The tip of the scissors member 11 protrudes from the tubular body 1, and a hooking plate 13 having an L-shaped cross section is attached to one side, that is, the lower side, and the other side, that is, the upper side, is bent in a hook shape toward the hooking plate 13. Then, the pressing plate 14 having the tip as the pressing surface 14a is attached, and the caulking member 15 is provided on the inner surface of the base of the pressing plate 14 so as to project.

As shown in FIG. 5, after applying the L-shaped corner member 17 between the plate flanges 16 and 16 between the ducts 20 side, the hooking plate 13 is hooked to the outer surface of the plate flange 16 as shown in FIG. Then, the pushing surface 14a of the pushing plate 14 is brought into contact with the inner surface of the L-shaped corner member 17 near the duct 20, and the operation plate 4 is pushed to perform the closing operation. The L-shaped corner member 17 is pressed by the pressing surface 14a.
The inner strip plate portion 19 of the
The L-shaped corner member 17 is pushed in by a
The other side inclined end 17a abuts against the inner end of the folded portion 16b formed by the inner folded portion of the tip of the outer hooked portion 16a of the plate flange 16. In this manner, both blades of the L-shaped corner member 17 are pushed together between the plate flanges 16 and 16 and then the pushing plate 14 is returned and opened to temporarily remove the air fastener and as shown in FIG. 15 is sandwiched between the outer flange of outer flange 16a of plate flange 16 and the air fastener is pressed and closed again. The front half of outer hook 16a is pressed and folded toward the L-shaped corner member 17 side. Caulking. 16c is a caulking mark. FIG. 10 shows a state in which caulking marks 16c are provided at two locations.

<Effect of device> Since the device of the present invention is configured as described above, by using the air fastener, it is possible to apply L between the plate flanges.
The shaped corner member has the effect of overcoming the ridge and being easily pushed into a predetermined position and straddled. Also,
The L-shaped corner member, which is provided with a folded-back portion for locking the outer inclined end of the L-shaped corner member, pushes and folds the first half of the outer hooked portion of the plate flange, so that the L-shaped corner member that has been fitted over falls off due to impact or the like. The effect of eliminating fear is also produced.

[Brief description of drawings]

1 is a perspective view of the air fastener of the present invention, FIG. 2 is a vertical side view of the same, FIG. 3 is a partial perspective view of a plate flange duct, and FIG. 4 is a perspective view of a corner portion and an L-shaped corner member. 5 and 5 are perspective views when an L-shaped corner member is applied between the plate flanges, FIG. 6 is a cross-sectional view of an operation example when the L-shaped corner member is being pushed, and FIG. FIG. 8 is a perspective view showing an L-shaped corner member in a straddling state, FIG. 9 is a sectional view when caulking, FIG. 10 is a perspective view showing a caulking state, 1 is a tubular body, 2 Is an air hose, 2a is an open / close switch, 3 is a hinge, 4 is an operation plate, 5 is an opener, 6 is an air passage, 7 is a push rod, 8 is a spring,
9 is a retractable member, 9a and 9b are tapered grooves, 10 is a spring, 1
1 is scissors member, 11a is return spring, 12 is pin, 13 is hook plate, 14
Is a pressing plate, 14a is a pressing surface, 15 is a caulking member, 16 is a plate flange, 16a is an outer hooked portion, 16b is a folded portion, 16c is a caulking mark, 17 is an L-shaped corner member, 18 is a ridge, 19 Is an inner strip plate portion, 20 is a duct, and 20a is an end portion of the duct.

Claims (1)

[Scope of utility model registration request] 1. An advancing / retreating member for advancing / retreating by air pressure is fitted in a tubular body, and a scissor member which is sandwiched between the advancing / retreating member and which is opened / closed by advancing / retreating of the advancing / retreating member is inserted, and a tip portion of the scissor member is attached. The L-shaped hooking plate is attached to one side, the pushing plate whose tip is the pushing surface by hooking in the direction of the hooking plate is attached to the other, and the caulking member is projected on the inner surface of the base of the pushing plate. A characteristic air fastener.