JP2000263462A - Connection tool for resin pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform reliable and easy approach movement operation between a connection body and a fastening ring and to uniformly fasten a resin pipe against a connection body. SOLUTION: This connection tool comprises a lock body 11 locked on the connection body 71 side or the fastgening ring 75 side; a lock body 21 provided with a lock part 12; and support bodies 31 and 41 rotated around the rotary shaft 42 and having the tip side relatively approaching and separating. The lock bodies 11 and 21 are pivotally supported on the pivotal mounting shaft 32 of the support body 31 and the pivotal mounting shaft 43 of the support body 41, and when the connection body 41 and the fastening ring 74 are moved for approach to each other, the stopper pin 45 of the support body 44 and the stopper pin 37 of the support body 31, where the support bodies are situated on the sides mating to each other, are brought into contact with each other from the outside and situated such that the lock parts 12 and 22 are moved substantially in parallel to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for connecting a resin pipe such as a hot water pipe to a connector such as a joint or a header by relatively moving the connector and a tightening ring. The present invention relates to a resin pipe connection tool for sandwiching a resin pipe between an insertion tube portion of the connection body and the tightening ring and connecting the resin pipe to the connection body.

[0002]

2. Description of the Related Art As a conventional connecting body of a resin pipe of this kind,
For example, there is one described in Japanese Patent Publication No. 5-79877, which is shown in FIG. 14 and FIG. FIG. 14 shows a state of the temporary connection, in which the connection body 71 is provided with an inner cylinder portion 72 and a flange 73 into which a resin tube 75 is inserted, and a fastening ring 74 is inserted into the resin tube 75. ing. In this state, in order to perform the final tightening of the resin pipe 75 and make a firm connection,
By using a tool such as pliers or pliers to clamp the flange 73 of the resin pipe 71 and the tightening ring 74 in the direction indicated by a white arrow in the drawing and moving the tightening ring 74 relatively close to the flange 73 side. As shown in FIG. 15, the resin tube 75 is strongly pressed between the inner cylindrical portion 72 of the connecting body 71 and the tightening ring 74, thereby connecting the resin tube 75.

[0003]

However, conventionally, the connecting body 71 and the tightening ring 74 are moved close to each other by a manual operation using a tool such as pliers or pliers. Therefore, the connection body 71 and the tightening ring 74
The two ends of the tool contacting with each other rotate in an arc around the cross axis of the tool and come close to each other.
The clamp ring 74 is relatively close to the clamp ring 74 in a parallel state and is not pressed, but is pressed against the connecting body 71 and the clamp ring 74 in an inclined state. Therefore, a strong pressing force is locally applied to the connecting body 71 and the tightening ring 74, and the resin pipe 75 cannot be uniformly tightened. In addition, since a load is eccentrically applied to a part of the contact surface between the connecting body 71 and the tightening ring 74, a considerable force is required for tightening the resin tube 75, and the operation with these existing tools such as pliers is required. Then, the tightening work was extremely difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a resin pipe connecting tool which can securely and easily perform an approaching movement between a connecting body and a tightening ring and can uniformly tighten the resin pipe to the connecting body. It is.

[0005]

According to a first aspect of the present invention, there is provided a connecting tool for a resin pipe, which moves a connecting body and a tightening ring relatively close to each other so that an inner cylindrical portion of the connecting body and a tightening ring are connected to each other. A connecting tool for connecting the resin pipe to the connecting body by sandwiching the resin pipe with the two locking bodies having a locking portion to be locked to the connecting body side or the tightening ring side; One or both of them are rotated about a rotation axis provided at an intersecting portion that intersects each other, and the two distal ends are relatively close to each other, and are separated from each other. Each of the support members is pivotally attached to a pivot shaft provided on the distal end side thereof, and is provided on the base end side of each of the support members on the other side when the connecting body and the tightening ring are moved close to each other. Provided so as to abut against the abutted portion from outside and the locking portions always move in a substantially parallel state. Than it is.

According to a second aspect of the present invention, there is provided a connection tool for a resin pipe, wherein the outer circumferential surfaces of the locking body contacting the abutted portion are substantially parallel to each other. The locking portions that come into contact with the ring always move in a substantially parallel state.

According to a third aspect of the present invention, there is provided a connecting tool for a resin pipe, wherein the abutted portions of the two supports are formed by round shafts having the same diameter, and the axial center of the pivot shaft and the mating side. The straight line passing through the axis of the abutted portion of the supporting member and the circumscribed surface of the locking body abutting on the abutted portion are provided to be always parallel.

According to a fourth aspect of the present invention, there is provided a connecting tool for a resin pipe, wherein the contact portions of the two support members are formed by round shafts having the same diameter, and the axis of a pivot shaft and the shaft are connected to each other. While the axis of the contact portion is positioned equidistant from the axis of the rotation axis of the support,
The axis of the pivot shaft of each support and the axis of the abutted portion are disposed so as to be located on the center line of the rotation shaft.

According to a fifth aspect of the present invention, there is provided a resin pipe connecting tool, wherein each of the supports according to any one of the first to fourth aspects is provided with:
An operation handle that can be opened and closed by being gripped with one hand is extended, and one support is fixed, and by operating the operation handle, the other support is rotated about a rotation axis to be locked. It moves the body relatively close to each other.

According to a sixth aspect of the present invention, there is provided a connecting tool for a resin pipe, comprising a ratchet mechanism for rotating the other support by opening and closing the operation handle according to the fifth aspect.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting tool for a resin pipe according to an embodiment of the present invention will be described below with reference to the drawings. The state before and after the connection of the connection object, the fastening ring, and the resin pipe to be connected is shown as a cross-sectional shape in FIGS. 1, 6, and 10, respectively, and is not shown in other drawings. In the figure, connection tool 1
Moves the connecting body 71 and the tightening ring 74 relatively close to each other, and clamps the resin pipe 75 between the inner cylindrical portion 72 of the connecting body and the tightening ring 74, so that the resin pipe 75 is connected to the connecting body 71.
It is a tool to connect.

The connecting tool 1 has a pair of right and left locking members 11 and 21 which sandwich the inner insertion tube portion 72 of the connecting member 71 and the tightening ring 74 at the upper end thereof facing each other. I have. One locking body 11 is attached to a pivot shaft 32 attached to the upper end of one support body 31 serving as a support base of the connection tool 1 so as to be vertically rotatable. A stopper pin 45 which will be described later.
And an abutting surface 13 that abuts against it. The other locking body 21 is rotatable in the vertical direction on a pivot shaft 43 attached to the upper end of the other support 41 that rotates about a rotation shaft 42 at the upper end of the support 31. The locking portion 22 that is attached and abuts on the connecting body 71 and the abutment surface 23 that abuts on a stopper pin 37 described later are formed.

The locking part 12 and the locking body 2 of the locking body 11
As shown in FIG. 2, the locking portion 22 of the U.
2a and the concave portion 22a are formed to face each other at the same height, and the connecting body 71 and the tightening ring 74 are placed in these concave portions.

The support 31 includes a front plate 33, a side plate 34, and a back plate 35 formed by bending a single steel plate into a U-shape. The front plate 33 and the back plate 35 have substantially the same shape. And are separated by a certain distance. An escape window 34a is provided at an upper portion of the side plate portion 34 for allowing a claw tooth 44 of the support 41 to be described later to pass therethrough.

At the upper left end of the support 31 shown in FIG. 1, a flat stopper plate 36 is provided between the front plate 33 and the back plate 35, and is spaced a predetermined distance therefrom. A stopper pin 37 made of a round bar is attached. Accordingly, the locking body 21 comes into contact with the stopper pin 37 on the contact surface 23 so as to be able to be separated from the stopper pin 37, and has the opposite surface so as to be able to be separated from the inner surface of the stopper plate 36. It can be turned up and down within the range of the gap between the plate 36 and the stopper pin 37. The other locking body 11 is
By being in contact with the stopper pin 45 so that the stopper pin 45 can be separated from the stopper pin 45, the stopper pin 45 and the side plate portion 34 of the support body 31 can be vertically rotated about the pivot shaft 32. Further, the surface plate 33 of the support 31
The stopper pin 4 is provided at a position facing the rear plate portion 35.
5 is provided with a long hole 38 for escape, and a shaft insertion hole 39 for allowing movement of a later-described locking plate rotating shaft 63.
Are drilled.

On the other hand, the support body 41 is entirely made of a steel material of a certain thickness formed substantially like a leaf of a ginkgo tree, and a pivot shaft 43 is attached to the center of the upper end. The lower end surface of the support 41 is formed in an arc shape, and a plurality of claw teeth 44 are provided along the lower end surface. Also, the rotating shaft 4
A stopper pin 45 for restricting the rotation of the locking body 11 is attached diagonally below 2.

The pawl teeth 44 of the supporting member 41 constitute a ratchet mechanism. The ratchet locking plate 51 and the ratchet holding plate 52 described below are rotated by rotating a possible handle 61 described later left and right. Then, the claw teeth 44 are moved right and left, and the support 41 is rotated one pitch at a time around the rotation shaft 42.

Here, five axes of the rotating shaft 42, the pivot shaft 32, the stopper pin 45, the pivot shaft 43 and the stopper pin 37 of the connection tool 1, the contact surfaces 13 and 23 are provided.
Are arranged in the positional relationship shown in FIG.

In FIG. 4, the distance from the center O of the rotating shaft 42 to the axis A of the pivot shaft 32, the axis B of the stopper pin 37, the axis C of the pivot shaft 43, and the axis D of the stopper pin 45 are shown. The distances are all the same. The axis A and the axis B, the axis C and the axis D are respectively located on straight lines passing through the center O, and at least the stopper pins 37 and 45
Are formed in the same diameter. Further, the contact surface 13 of the locking body 11 is parallel to a straight line passing through the axis A and the axis D, and
1 and is in contact with the outer periphery of a stopper pin 45 as a contacted portion at a contact point F. The contact surface 23 of the locking member 21 is parallel to a straight line passing through the axis C and the axis B, and is in contact with the outer periphery of the stopper pin 37 as the contacted portion of the support 31 at the contact point E. . Therefore, since the triangle OCB and the triangle OAD have a congruent relationship, the straight line AD and the straight line CB are parallel, and the contact surface 13 and the contact surface 23 are parallel.
The opposing engaging portions 12 and 22 are in a parallel state.
Due to such a relationship, as shown in FIG. 5, the support 41 rotates a predetermined angle clockwise in FIG. 5 around the rotation shaft 42 with respect to the support 31 to form a new triangle OCB and a new triangle. Even if the OADs are formed, they also have a congruent relationship, so that the straight line AD and the straight line CB are parallel and the contact surface 13 and the contact surface 23 are in a parallel state. 1
2 and the locking portion 22, the parallel state is maintained, and the U-shaped concave portion 12 a of the locking portion 12 and the locking portion 2
The two U-shaped concave portions 22a are directly above the same without shifting in the vertical direction. This parallel state is always established regardless of the rotation angle of the support 41 with respect to the support 31.

The locking portions 11 and 21 are freely rotatable around the pivot shafts 32 and 43, respectively. And the locking portion 22 generates a force in a direction away from each other, so that the abutting surface 13 of the locking body 11 and the abutting surface 23 of the locking body 21 are, as shown in FIG.
And the outer peripheral surface of the stopper pin 37.

Next, the movable handle 61 is attached to the fixed handle portion 40 of the support 31 on the fixed side so as to be rotatable in the left-right direction about an upper handle rotation shaft 62 as an axis. The movable handle 61 bends a steel plate into a U-shape,
The opening side faces the opening side of the fixed handle part 40 of the support 31. A locking plate rotation shaft 63 is provided above the handle rotation shaft 62 of the movable handle 61. On the left side of the locking plate rotation shaft 63, a protrusion of a holding plate rotation shaft Slot 64 to avoid interference
Is provided. A wire spring 65 for urging outward is attached between the fixed handle portion 40 of the support 31 and the movable handle 61 on the handle rotation shaft 62, so that the movable handle 61 is always held in the open direction. ing.

The fixed handle 40 of the support 31 and the movable handle 61 of the support 41 can be gripped and rotated with one hand.

Next, the structure of a ratchet mechanism for rotating the support 41 by one pitch of the claw teeth 44 by operating the movable handle 61 will be described. FIG. 3 is a fragmentary cutaway view showing a ratchet mechanism portion, and the ratchet locking plate 51 and the ratchet holding plate 52 are provided with pawl teeth 44 of the support 41.
It is detachably attached to

The ratchet locking plate 51 is formed of a flat plate having a substantially boomerang shape.
Is mounted so as to be rotatable up and down around a locking plate rotation shaft 63 provided on the shaft. The locking portion 51 a at the left end of the ratchet locking plate 51 is formed in a shape to engage with the claw teeth 44 of the support 41. The wire spring 53 is wound around the locking plate rotating shaft 63, and the distal end of the extended portion at one end is bent in a right angle direction to abut along the end surface of the ratchet locking plate 51, The tip of the extension is the handle rotation shaft 62.
It is attached so that it may contact the outer peripheral surface of the. Therefore,
The ratchet locking plate 51 is always elastically urged in the clockwise direction in the drawing around the locking plate rotating shaft 63 to abut the claw teeth 44.

On the other hand, the ratchet holding plate 52 is formed in a substantially bottle shape by a flat plate, and has a holding plate rotating shaft 54 provided between the front plate 33 and the back plate 35 of the support 31 at a substantially central portion. Is mounted so as to be rotatable up and down in a predetermined range around the axis. The holding and locking portion 52 a at the upper end of the ratchet holding plate 52 is formed in a shape to engage with the claw teeth 44 of the support 41. The wire spring 55 is wound around the holding plate rotating shaft 54, and the leading end of the extended portion at one end is bent in a right angle direction to abut along the end surface of the ratchet holding plate 52, and the extension at the other end is provided. The distal end of the portion is attached so as to contact the outer peripheral surface of the handle rotation shaft 62. Therefore, the ratchet holding plate 52 is always elastically urged in the clockwise direction about the holding plate rotating shaft 55 to come into contact with the claw teeth 44.

Further, between the ratchet retaining plate 51 and the ratchet holding plate 52, a connecting plate 56 is attached at one end to the retaining plate rotating shaft 63 so as to be freely rotatable. 56 has a long hole 56a formed at the other end. The slot 56a has a ratchet holding plate 5
A connection pin 57 penetrating through the lower end of the second 2 is slidably interposed. When the ratchet is released after connection, the ratchet holding plate 52 is largely rotated in the counterclockwise direction via a connecting pin 57 penetrating the long hole 56a, so that the ratchet holding plate 52 and the claw teeth 44 This is for releasing the locking of.

Next, the operation of the connecting tool of the present embodiment having the above-described configuration will be described with reference to FIGS.
In these figures, the connecting body 71, the fastening ring 7
4 and the resin tube 75 are shown only in FIGS. 6 and 10, and are omitted in other drawings. First, at the start of connection, the support 41 is positioned at the rotation angle shown in FIG. 6, and the ratchet locking plate 51 and the ratchet holding plate 52 are not engaged with the claw teeth 44 of the support 41. . In this state, the inner insertion tube portion 72 of the connecting body 71 is inserted into the inside of the resin tube 75, the fastening ring 74 is fitted over the resin tube 75, and these are fitted into the recesses of the locking portion 12 of the locking body 11. It is attached between 12a and the concave portion 22a of the locking portion 22 of the locking body 21.

Then, as shown in FIG. 7, when the movable handle 61 is squeezed and rotated in the closing direction, ie, counterclockwise in FIG. 7, the locking plate rotating shaft 63 attached to the upper end of the movable handle 61 is moved. The inside of the shaft insertion hole 39 is moved leftward, that is, counterclockwise, and the locking portion 51a of the ratchet locking plate 51 is fitted and engaged between the second and third claw teeth 44 from the left. At the same time, the ratchet holding plate 52 is connected to the wire spring 5 shown in FIG.
5, the holding and locking portion 52 a moves to the left of the first claw tooth 44.

Next, the tightening of the movable handle 61 is stopped, and the movable handle 61 is turned upside down and expanded in the opening direction.
The movable handle 61 also receives the urging force in the opening direction of FIG.
As shown in FIG. 7, the lock plate rotates in the opening direction, that is, clockwise, and accordingly, the locking plate rotation shaft 63 attached to the upper end of the movable handle 61 is rotated by the handle rotation shaft 62 as an axis.
Turn right inside. Along with this, the locking portion 51a of the ratchet locking plate 51 also tries to move rightward together with the claw teeth 44. At this time, the pawl teeth 44 are connected to the ratchet holding plate 5.
2 is prevented from moving rightward, and is held in a fixed position. Therefore, only the ratchet locking plate 51 resists the urging force of the wire spring 53. And the engaging portion 51a moves between and engages with the next third and fourth claw teeth 44. Up to this point, the support 4
Since 1 is at the fixed position, the interval and the inclination between the locking body 11 and the locking body 21 do not change at all.

Next, when the movable handle 61 is squeezed again, the locking plate rotating shaft 63 is rotated by the counterclockwise rotation of the movable handle 61 as shown in FIG. , The locking portion 51a of the ratchet locking plate 51 moves the claw teeth 44 to the left.
Therefore, the claw teeth 44 rotate the holding and locking portion 52 a of the ratchet holding plate 52 to the left against the elastic force of the linear spring 55. Therefore, the holding and locking portion 5 of the ratchet holding plate 52
2a is moved between the first and second claw teeth 44 on the right side by the urging force of the wire spring 55, and engages with the claw teeth 44.
As a result, the claw teeth 44 rotate leftward by one pitch.

Thereafter, when the movable handle 61 is inverted and rotated in the opening direction, only the ratchet locking plate 51 moves rightward while the pawl teeth 44 are prevented from rotating rightward by the ratchet holding plate 52. Then, the locking portion 51a moves between the next claw teeth 44.

Similarly, each time the movable handle 61 is alternately rotated left and right, the ratchet locking plate 51
The ratchet holding plate 52 alternately engages and disengages with the pawl teeth 44, and the pawl teeth 44 sequentially move leftward by one pitch.
Accordingly, the support 41 rotates clockwise about the rotation shaft 42, and the distance between the locking body 11 and the locking body 21 is reduced.

FIG. 9 shows a state during the tightening. In FIG. 9, the pawl teeth 44 are moved by five pitches, and the support 41 is rotated clockwise about the rotation shaft 42 by an angle corresponding thereto. In this state, the contact surface 13 of the locking body 11 and the contact surface 23 of the locking body 21 are pivoted clockwise and pivotally about the pivot shaft 32 by the pressing force of the connecting body 71 and the tightening ring 74, respectively. It rotates counterclockwise about the mounting shaft 43 and contacts the outer peripheral surfaces of the stopper pin 45 and the stopper pin 37.

Here, the rotation angle and the interval between the locking body 11 and the locking body 21 are in the relationship shown in FIG. 5, and the locking part 12 of the locking body 11 and the locking part 22 of the locking body 21 Are parallel to each other, and the locking portions 12 and 22 are connected to the connecting body 71 and the tightening ring 74.
Abut on the entire surface. Therefore, the connecting body 71 and the tightening ring 74 are uniformly tightened.

FIG. 10 shows a state after connection is completed. FIG.
Although the inclination of the locking body 11 and the locking body 21 is increased, the locking part 12 and the locking part 22 are parallel to each other as in FIG. 9, so that the connection body 71 and the tightening ring 74 are uniformly tightened. Can be That is, the locking body 11 depends on the degree of tightening.
No matter how inclined the locking body 21 is, the locking body 11 is always
The locking portion 12 and the locking portion 22 of the locking body 21 are held in a parallel state, and the concave portion 12a and the concave portion 22a also come to opposing positions at the same height, so that the connecting body 71 and the tightening ring 74 are uniformly formed. Be tightened.

Next, the operation for releasing the ratchet after the fastening will be described with reference to FIGS. When the movable handle 61 is expanded from the tightening completed state in FIG. 10, first, in FIG. 11, the locking plate rotating shaft 63 rotates rightward about the handle rotating shaft 62, As shown in FIG. 12, the ratchet locking plate 51 comes into contact with the inner wall of the side plate 34 at the right end 31. Therefore, if the movable handle 61 is further pushed leftward beyond the rotation range at the time of tightening, the locking plate rotation shaft 63 reaches the right end of the shaft insertion hole 39 as shown in FIG. With the ratchet locking plate 5
1 rotates counterclockwise when its right end is pressed by the side plate 34 of the support 31. At this time, the ratchet locking plate 51 largely rotates against the urging force of the wire spring 53, and comes off the claw teeth 44 and descends.

On the other hand, with the rotation of the locking plate rotating shaft 63, the connecting plate 56 also moves to the right as a whole.
The connecting pin 57 inserted therein also moves rightward. Therefore, the ratchet holding plate 52 rotates counterclockwise about the holding plate rotation shaft 54, and the engagement with the claw teeth 44 is released.
As a result, the pawl teeth 44 of the support 41 are connected to the ratchet locking plate 5.
1 and the ratchet holding plate 52 are completely disengaged, and the support 41 is in a freely rotatable state, and automatically returns to the position at the start of tightening by its own weight.

Since the connecting tool 1 of this embodiment is constructed and operated as described above, the locking portion 12 of the locking body 11 and the locking body 2
1 is completely parallel to the locking portion 22 and the locking portion 12
The concave portion 12a of the locking portion 22 and the concave portion 22a of the locking portion 22 are opposed to each other and are separated from each other. Therefore, the connecting body 71 and the tightening ring 74 are uniformly pressed and tightened by the locking body 11 and the locking body 21. be able to. Thereby, the resin pipe 75 can be securely and firmly connected to the connection body 71. Further, the fastening operation can be performed by holding the fixed handle portion 40 and the movable handle 61 with one hand. Furthermore, the force required for tightening can be reduced by the ratchet mechanism.

When the present invention is carried out, the locking portion 12 of the locking body 11 and the locking portion 22 of the locking body 21 do not necessarily have to be exactly parallel. If the resin tube 75 can be tightened uniformly and easily, it is sufficient that the resin tube 75 moves relatively in a substantially parallel state.

In the above embodiment, the locking member 11 and the locking member 21 are tilted by rotating the supporting member 41 as the movable side in the vertical direction with respect to the supporting member 31 on the fixed side. Although the connecting body 71 and the tightening ring 74 are tightened, the present invention is not limited to this, and the present invention is not limited to this. By attaching the movable locking body 11 and the locking portion 12, the locking body 11 and the locking body 21 are provided.
Can be relatively moved closer and farther apart without tilting.

Further, in the above embodiment, the support 41 is rotated by the ratchet mechanism. However, the present invention is not limited to this.

[0042]

As described above, the connecting tool for a resin pipe according to the present invention has two engaging members provided with engaging portions which are engaged on the connecting member side or the tightening ring side, and the intersecting portions intersecting each other. One or both of which are pivoted about a pivot shaft provided in the portion, and two support members whose tip sides are relatively close to and separated from each other, and each locking body is provided on the tip side of each support body. While being pivotally attached to the provided pivot shafts, when moving the connecting body and the tightening ring close to each other, they come into contact with the abutted portion provided on the base end side of each support from the outside, The locking portions are provided so as to always move in a substantially parallel state. Therefore, since the locking portions of the two locking bodies can be moved in parallel and opposed to each other, the operation of moving the connecting body and the tightening ring close to each other can be performed reliably and easily. Can be connected uniformly and firmly.

In the connecting tool according to the fifth aspect, in particular, since the operating handle which can be opened and closed by being gripped with one hand is extended, workability is further improved.

Furthermore, the connecting tool according to the sixth aspect is provided with a ratchet mechanism for rotating the other support by opening and closing the operation handle, so that the force required for tightening can be further reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a connection tool for a resin pipe according to an embodiment of the present invention.

FIG. 2 is a left side view of the connection tool of FIG. 1;

FIG. 3 is a partially cutaway front view of the connection tool of FIG. 1;

FIG. 4 is an explanatory view showing a positional relationship of a locking body at the time of starting connection in FIG. 1;

FIG. 5 is an explanatory view showing a positional relationship of a locking body at the time of tightening in FIG. 1;

FIG. 6 is a front view showing a state at the time of starting connection of the connection tool of FIG. 1;

FIG. 7 is a front view showing a state in which a movable handle of the connection tool in FIG. 1 is closed.

FIG. 8 is a front view showing a state in which the tightening tool of FIG. 1 is opened.

9 is a front view showing a state in which the tightening tool of FIG. 1 is in the middle of tightening.

FIG. 10 is a front view showing a state after connection is completed in the fastening tool of FIG. 1;

FIG. 11 is a front view showing a state at the time of starting ratchet release in the tightening tool of FIG. 1;

FIG. 12 is a front view showing a state in which the ratchet of the fastening tool of FIG. 1 is being released.

FIG. 13 is a front view showing a state after ratchet release is completed in the fastening tool of FIG. 1;

FIG. 14 is a longitudinal sectional view showing a conventional connection body of a resin pipe.

FIG. 15 is a longitudinal sectional view showing a state after connection of a resin pipe to a conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting tool 11, 21 Locking body 12, 22 Locking part 12a, 22a Concave part 13, 23 Contact surface 31, 41 Supporting body 32, 43 Pivot shaft 37, 45 Stopper pin 40 Fixed handle part 42 Rotating shaft 44 Claw teeth 51 Ratchet locking plate 52 Ratchet holding plate 53, 55, 65 Wire spring 54 Holding plate rotation axis 56 Connection plate 57 Connection pin 61 Movable handle 62 Handle rotation axis 63 Lock plate rotation axis 71 Inside connector 72 Insertion tube part 73 Flange 74 Tightening ring 75 Resin tube

Claims (6)

[Claims] 1. A resin tube is connected to the connecting body by moving the connecting body and the tightening ring relatively close to each other, and sandwiching the resin tube between the internal cylinder portion of the connecting body and the tightening ring. A connection tool for a resin pipe to be connected, comprising: two locking members provided with locking portions locked on the connection body side or the tightening ring side; and a rotating shaft provided at an intersection that intersects with each other. One or both of the support members are pivoted around the center, and the two support members are relatively close to and separated from each other at the distal end, and each of the locking members is a pivot shaft provided at the distal end of each of the support members. When the connecting body and the tightening ring are moved close to each other, the connecting body and the tightening ring come into contact with the abutted portions provided on the base end sides of the respective support members on the other side from outside, and A connection tool for a resin pipe, wherein the stop portions are provided so as to always move in a substantially parallel state. 2. Since the outer circumferential surfaces of the locking body that comes into contact with the abutted portion are always substantially parallel to each other, the locking portions that come into contact with the connecting body and the tightening ring are always substantially always made. The connection tool for a resin pipe according to claim 1, wherein the connection tool moves in a parallel state. 3. A contacted portion of the two supports is formed of a round shaft having the same diameter, and a straight line passing through the axis of the pivot shaft and the axis of the contacted portion of the other support. The connecting tool for a resin pipe according to claim 1, wherein an outer circumferential surface of the locking body that comes into contact with the abutted portion is always provided in parallel. 4. An abutting portion of the two supports is formed of a round shaft having the same diameter, and an axis of the pivot shaft and an axis of the abutting portion are pivotal axes of the support. And at the same distance from the axis of the support shaft, and the axis of the pivot shaft of each support and the axis of the abutted portion are disposed so as to be located on the center line of the rotation shaft. The connection tool for a resin pipe according to claim 1. 5. An operation handle that can be opened and closed by being gripped with one hand is extended on each of the supports, one of the supports is fixed, and the other support is rotated by operating the operation handle. The connecting tool for a resin pipe according to any one of claims 1 to 4, wherein the locking body is relatively close-moved by rotating about a dynamic shaft. 6. The connection tool for a resin pipe according to claim 5, further comprising a ratchet mechanism for rotating the other support by opening and closing the operation handle.