JPH0140580Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the improvement of a flexible tube flaring tool, and is mainly used in the manufacturing and sales industry of hand tools and the use of flexible tubes in the facility industry such as water supply. It is used in the field.

(Prior art) Conventionally, a tube tightening member is screwed into the base rod of a roughly U-shaped flaring tool body formed by protruding two side rods from both ends of the base rod so that the two side rods can be moved forward and backward. One clamping member of the tube clamping member formed in two parts is fixed to the tip of the side bar of the main body, and the base end of the other clamping member is rotatable to the tip of one of the side bars of the main body. In the case of a flexible tube flaring tool of the type in which both clamping members can be joined and separated by pivoting, bolts or bolts are used to join and separate the clamping members.
This is done by tightening and loosening the nuts, which is extremely inefficient, making it difficult to efficiently produce flanged flexible tubes. Since the flange of the tube, which is formed by being strongly compressed and expanded, is in a state of being bitten by both members, it is difficult to take out the tube smoothly, and this also has a considerable effect on reducing production efficiency. This is the current situation.

(Purpose of the present invention) The present invention has been researched and developed to address the above-mentioned problems, and is capable of easily and reliably joining and separating both clamping members of a flexible tube with a single touch operation. The production efficiency of flanged flexible tubes can be significantly improved, and the flange of the tube, which is strongly clamped by the tube clamping member and the tube clamping member, can be automatically removed when the clamping members separate. It is an object of the present invention to provide a flexible tube flaring tool that can be released from a biting state and can further improve production efficiency.

(Structure of the present invention) The flexible tube flaring tool according to the present invention has a substantially U-shaped flaring tool body formed by protruding two side rods from both ends of the base rod, and the tube is fastened to the base rod. The attached member is screwed in such a way that it can move forward and backward, and one clamping member of the two-part tube clamping member is fixed to the tips of the two side rods, and the base end of the other clamping member is attached to the main body. In a flexible tube flange tool that is rotatably pivotally attached to the tip of one side rod so that both clamping members can be joined and separated, the fixed clamping member on the opposite side of the movable clamping member. A support shaft having an eccentric shaft portion is rotatably mounted on the end of the support shaft, and a hook that engages with the engagement stepped portion formed at the tip of the movable clamping member is rotatably mounted on the eccentric shaft portion. At the same time, the hook is normally biased to elastically rotate toward a predetermined position via a spring and a stopper toward the engaging portion, and is movably held at a suitable position on the inner edge of the hook. It is configured by providing a kicking edge of the member.

(Embodiment of the present invention) Next, an embodiment of the present invention will be described based on the attached drawings.
It is a roughly U-shaped flaring tool body formed by protruding in the same direction, and is provided with a grip 4 at one end of a base rod 2. Reference numeral 5 denotes a tightening member for protruding the flexible tube T, and a ball 7 and a ring 8 are attached to the tip of a threaded rod 6 that is screwed into the base rod 2 of the main body 1 so as to be movable back and forth.
A roll-shaped tightening head 9 is rotatably and swingably mounted through the handle, and a rotating handle 1 is provided at the base end.
0 is attached, and the tightening head 9 is
The guide protrusion 11 is inserted into a flexible tube protruding from the center of the front surface, and a tightening surface 12 is formed around the base of the protrusion. 13
1 is a clamp having an insertion hole 15 for a flexible tube T installed at the tip of the main body 1, that is, at the tips of the two side bars 3, 3 via mounting bolts 14, 14, facing the tightening head 9. The member is constructed in two parts, one clamping member 13a is fixed, and the other clamping member 13b has its base end pivoted to one of the side rods 3 so as to be rotatable. ing. 16
is a supporting shaft rotatably mounted on the end of the fixed clamping member 13a on the opposite side of the movable clamping member 13b, and as shown in FIG. A medium diameter eccentric shaft 16b is disposed eccentrically from both the small diameter shaft 16c and a small diameter shaft 16c disposed in the center. Reference numeral 17 denotes a hook which is rotatably supported on the eccentric shaft 16b of the support shaft 16, and has a movable clamping member 13 at its tip.
It is provided with a claw 17a that engages with an engagement step 18 formed at the tip (free end) of b, and a kick-out protrusion 17b of the movable clamping member 13b at the base end of the inner edge. A stopper 19 is a pin inserted laterally into the outer tip of the hook 17 and has both ends protruding outward. A stopper 20 has one end secured to the stopper 19, and the intermediate portion is wound around the eccentric shaft 16b. , respectively, show springs whose other ends are locked to one of the mounting bolts 14, and the springs allow the hook 1 to be
After the protruding end of the stopper 19 collides with the outer peripheral surface of the distal end of the fixed clamping member 13a, the hook is elastically pulled by the spring 20. It is configured to prevent rotation, and therefore both clamping members 13a,
When 13b is separated, the hook 17 is always elastically pulled to the fixed position by the spring 20. In the figure, 21 is the tube clamping collar provided at the inner edge of the tube insertion hole 15; 2
Reference numeral 2 indicates a rotation knob provided on the large diameter shaft 16a of the support shaft 16.

In the above embodiment, as shown in FIGS. 3 and 4, both clamping members 13 are in a separated state.
Insert the end of the flexible tube T into the insertion hole 15 of the fixed clamping member 13a of the a and 13b,
The movable clamping member 13b is rotatably joined to the clamping collar 21.
After clamping the tube, the clamping member 5 is screwed forward and the end of the tube is tightened between the clamping head 9 and the clamping collar 21 to perform the required flange, and the diameter is expanded to the required diameter. The joint of both clamping members 13a and 13b is to form a flange T _a .
3b to release the hook 17 of the fixed clamping member 13a.
This can be achieved reliably and powerfully by a simple operation of colliding with the tip of the support shaft 16 and rotating the support shaft 16 in a predetermined direction using the knob 22.

That is, when the movable clamping member 13b is rotated and brought into contact with the tip of the hook 17 of the fixed clamping member 13a,
As shown in FIG. 6A, the engaging stepped portion 1 of the member 13b
8, the hook 17 is rotated in the direction of the arrow against the spring 20, and when the member 13b is further rotated, the hook 17 is returned to its original position by the elastic force of the spring 20, as shown in B of the figure. Then, the claw 17a of the hook and the engaging stepped portion 18 of the member 13b are engaged, and both the members 13a and 13b are joined together.

At this time, since the position of the hook 17 is exactly as shown by the chain line in FIG. 7, the state of attachment is weak and the state of holding the flexible tube T is insufficient. Therefore, as shown in FIG. 7, rotate the knob 22 of the support shaft 16 to the left in the direction shown in
6, since the hook 17 is inserted into the eccentric shaft 16b of the support shaft 16, the eccentric rotation action of the hook 17 causes the hook 17 to be actuated and pulled to the solid line position by the tightening force, and the claw 17a is pulled into the member 13b. It is strongly crimped and tightened to the engaging stepped portion 18 of.

Next, when the flexible tube flange work is completed, the knob 22 is moved back to its original position to release the tightening force and the hook 1 is released, as shown in FIG.
7 in the direction of the arrow with your fingertips to remove both gripping members 13.
A and 13b are uncoupled, both members are separated, and the flexible tube is taken out. When the hook is rotated in the direction of the arrow with a fingertip, the kick-out ridge 17b provided on the hook releases the member 13b. Since the tip is automatically kicked out, the tightening head 9 of the tube tightening member 5
The flange of the tube, which is strongly clamped by the clamping flange 21 of the tube clamping member 13, can be released from the clamping state, and the tube can be easily taken out.

(Effects of the present invention) Since the present invention is configured as described above and used as described above, it is possible to connect and separate the clamping members of the tube in this type of flexible tube flanging tool. This can be done simply and easily with a one-touch operation, which significantly improves the efficiency of the flanging work.It also has the advantage of tightening the joint between both clamping members with the same simple one-touch operation. The flange of the tube, which is strongly clamped by the tube clamping member, is automatically released from the clamping state by the kicking action when the hook rotates when separating both clamping members. This makes it possible to further improve the efficiency of tube flanging work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partial vertical side view, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 shows both holding members of the flexible tube. A partially omitted side view showing a state in which the tube is inserted after being separated, FIG. 4 is a sectional view taken along the line B-B in FIG. 3, and A and B in FIG. In the perspective view, A, B, and C in Fig. 6 show the joining, tightening, and
FIG. 7 is an explanatory diagram showing a separated state, and FIG. 7 is an enlarged explanatory diagram showing a state in which the hook is tightened and engaged by the support shaft. DESCRIPTION OF SYMBOLS 1... Flange tool main body, 2... Base rod, 3... Side rod, 5... Tube tightening member, 13... Tube clamping member, 13a... Fixed clamping member, 13b...
Movable clamping member, 16... Support shaft, 16b... Eccentric shaft portion, 17... Hook, 17b... Kicking edge, 1
8... Engagement stepped portion, 19... Stopper, 20...
spring.

Claims (1)

[Scope of utility model registration request] A tube tightening member is screwed into the base rod of a roughly U-shaped flaring tool body formed by protruding two side rods from both ends of the base rod so that it can move forward and backward, and the tips of the two side rods are screwed into the base rod. One clamping member of the tube clamping member configured in two parts is fixedly attached to the tube clamping member, and the base end of the other clamping member is rotatably pivoted to the tip of one side rod of the main body. In a flexible tube flaring tool in which clamping members can be joined and separated, a support shaft having an eccentric shaft portion is rotatably mounted at the end of a fixed clamping member on the opposite side of the movable clamping member. death,
A hook that engages with an engagement step formed at the tip of the movable clamping member is rotatably supported on the eccentric shaft, and the hook is normally moved to a predetermined position via a spring and a stopper. A tool for projecting a flexible tube, which is biased so as to elastically rotate toward an engaging part side, and is configured by providing a protrusion for kicking out a movable clamping member at a proper position on the inner edge of the hook.