JPH08303416A - Combining device - Google Patents

Abstract

PURPOSE: To eliminate wearing of a wrench insertion hole formed in a rotor due to the use of wrench, and to ensure turning movement of the rotor and drawing-in of a pin of a pin device by a hook. CONSTITUTION: A square wrench-insertion hole 34 is formed in the eccentric shaft 33 of a rotor, and plural projections 42a, 42b are formed on the outside peripheral part of the body of the rotor. When a wrench is inserted into the wrench insertion hole 34, the rotor can be surely turned, and drawing-in of a pin of a pin device by means of a hook 51 is ensured by engaging the projections with engaging grooves formed in a circular hole of the hook 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining device incorporated inside a prefabricated panel for joining prefabricated panels constituting a prefabricated structure such as a prefabricated refrigerator / freezer.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No. 60-2528 (F
16B5 / 07) discloses a rotary lock constituted by a hook device for a prefabricated panel and a pin device incorporated in another prefabricated panel. The rotary lock is used for assembling a heat-insulating prefabricated panel that constitutes a prefabricated refrigerator-freezer. A cooling device for cooling the inside of the prefabricated refrigerator-freezer is provided inside the prefabricated refrigerator-freezer, and a door for storing and carrying out products is provided at the front of the prefabricated refrigerator-freezer so as to be openable and closable.
Then, as shown in FIG. 16, a hook device (coupling device) F is incorporated in one prefab panel 102, and a pin device P is incorporated in the other prefab panel 102, and the hook of the hook device F is pinned by the pin of the pin device P. The prefabricated panels are engaged with each other by engaging and pulling together.

The conventional structure of such a hook device F is as follows.
It is shown in FIGS. The hook storage case 103 of the hook device F is formed by, for example, spot welding by abutting a pair of iron plates 105 having a hook storage recess 104 formed therein. A plurality of air vent holes 106 are formed in the hook storage case 103.
Is provided with a seal that blocks the ingress of foam insulation. Inside the hook storage case 103, as shown in FIG. 19, a rotor 107 made of, for example, iron, which is provided with a body 207 having a circular cross section, is rotatably supported about its eccentric shaft 108. Projection 1 on the outer periphery
09 are formed. The body portion of the rotor 107 configured as described above is inserted into the circular hole 111 of the hook member 110 made of, for example, iron, and the hook member 110 is rotated by the rotor 107.
It is rotatably supported by. Also, the hook member 110
A pull-in side stopper 112 and a slack side stopper 113 are formed in this.

Then, a hexagonal wrench is inserted into, for example, a hexagonal wrench insertion hole 208 formed in the eccentric shaft 108 of the rotor 107, and is rotated clockwise around the wrench insertion hole 208 to make the protruding portion 109 a pull-in side stopper. 112
When the hook portion of the hook member 110 approaches the eccentric shaft 108, the rotor 107 is rotated counterclockwise to bring the protruding portion 109 into contact with the loosening side stopper 113. The hook part is the eccentric shaft 108.
Far from.

[0005]

When the prefabricated panel having the hook device F and the prefabricated panel having the pin device P configured as described above are combined, a processing error of the prefabricated panel or foam insulation of urethane or the like is performed. As a result of unevenness during material injection, unevenness occurs on the connection surface between the prefabricated panels. Therefore, when the hook portion of the hook member 110 of the hook device F is engaged with the pin 120 of the pin device P and pulled near, a large force is required to rotate the rotor 107, and the rotor 107 rotates during the rotation. May not be possible.

When a force is applied to the coupling portion in a direction away from the joint when the rotation becomes impossible on the way, the force is transmitted to the hook member 110, and the rotor 107 is counteracted by the force applied to the center of the hook member 110. There is a possibility that the connection by the rotary lock may be loosened by rotating in the clockwise direction. In order to prevent the rotary lock from being loosened, the applicant of the present application, in Japanese Patent Application No. 6-116784, forms a pair of protrusions on the outer circumference of the body of the rotor, and the protrusions engage with the circular holes of the hook members. A hook device for a prefabricated panel in which an engaging groove is formed is proposed. This prefabricated panel hook device prevents the rotary lock from being loosened by engaging the protrusion of the rotor with the engagement groove of the hook member even if the rotation is stopped during the rotation of the rotor. . However, when a stronger force is applied to the hook member in the loosening direction, the rotor may rotate in the loosening direction of the rotary lock.

Further, when a resin rotor 107 having elasticity is used, the outer periphery of the rotor 107 rubs against the inner periphery of the circular hole 111 of the hook member 110 when the rotor is rotated, and the protrusion on the outer periphery of the rotor 107 is circular. There is a problem in that the protrusion is not sufficiently engaged with the engaging groove due to being cut by the hole 111. Further, in the hook device F, the rotor 107 may be made of resin in order to reduce the weight of the rotary lock, reduce costs, or add elasticity to the rotor. At this time, due to a dimensional error between the hexagonal wrench insertion hole 208 and the hexagonal wrench, a clearance, a dimensional change of the wrench insertion hole 208 due to a temperature change, or the like, when the rotor 107 is rotated by the hexagonal wrench, the hex wrench is inserted. Since the corner of the hole 208 is licked, the rotor cannot be rotated by the wrench, and the rotary lock cannot be connected.

[0008]

In order to solve the above-mentioned problems, the present invention according to claim 1 is rotatably supported about an eccentric shaft and has a body having a circular cross section.
In a coupling device including a rotor having elasticity and a hook having a circular hole into which a body portion of the rotor is inserted, a wrench insertion hole having a square shape is formed in an eccentric shaft of the rotor, and a body of the rotor is formed. Provided is a coupling device in which a plurality of protrusions are formed on an outer peripheral portion of the portion, and a plurality of engaging portions that are selectively engaged with the protrusions of the rotor are formed on an inner peripheral surface of the circular hole of the hook. It is a thing.

According to the second aspect of the invention, the rotor, which is rotatably supported about the eccentric shaft, has a body having a circular cross section, and has elasticity, and the body of the rotor. In a coupling device including a hook having an inserted circular hole, one wrench insertion hole having a polygonal shape is formed on the eccentric shaft of the rotor, and one of the wrench insertion holes is provided at the back or at the wrench insertion port side. Another wrench insertion hole of polygonal shape whose number of strokes is different from one wrench insertion hole is formed, and a plurality of protrusions are formed on the outer peripheral portion of the body of the rotor,
Provided is a coupling device in which a plurality of engaging portions that selectively engage with a protrusion of a rotor are formed on an inner peripheral surface of a circular hole of a hook.

According to the third aspect of the present invention, a quadrangle wrench insertion hole is formed in the eccentric shaft of the rotor, and a polygon having a number of strokes larger than a quadrangle is formed in the back of the quadrangle wrench insertion hole or on the wrench insertion port side. Shaped wrench insertion hole is formed,
A coupling device in which a plurality of protrusions are formed on the outer peripheral portion of the body of the rotor, and a plurality of engaging portions that selectively engage with the protrusions of the rotor are formed on the inner peripheral surface of the circular hole of the hook. Is provided.

According to a fourth aspect of the present invention, a rectangular wrench insertion hole is formed in the eccentric shaft of the rotor from the wrench insertion port to a predetermined depth, and the hexagonal wrench is inserted in the back of the rectangular wrench insertion hole. A hole is formed, a plurality of protrusions are formed on the outer periphery of the body of the rotor, and a plurality of engaging portions that selectively engage with the protrusion of the rotor are formed on the inner peripheral surface of the circular hole of the hook. The present invention provides a coupling device.

According to a fifth aspect of the present invention, a hexagonal wrench insertion hole is formed in the eccentric shaft of the rotor from the wrench insertion port to a predetermined depth, and a rectangular wrench insertion hole is formed deep inside the hexagonal wrench insertion hole. A hole is formed, a plurality of protrusions are formed on the outer periphery of the body of the rotor, and a plurality of engaging portions that selectively engage with the protrusion of the rotor are formed on the inner peripheral surface of the circular hole of the hook. The present invention provides a coupling device.

Further, the invention of claim 6 provides a coupling device characterized in that the depth of the hexagonal wrench insertion hole of the rotor is made larger than the depth of the square wrench insertion hole. According to the invention of claim 7, a wrench insertion hole is formed in the eccentric shaft of the rotor, a plurality of protrusions are formed on the outer peripheral portion of the body of the rotor, and a through hole is formed inside the protrusion. Provided is a coupling device in which a plurality of engaging portions that selectively engage with a protrusion of a rotor are formed on an inner peripheral surface of a circular hole of a hook.

Further, according to the invention of claim 8, a wrench insertion hole is formed in the eccentric shaft of the rotor, and the first protrusion is formed at a position shifted by approximately 90 ° clockwise from the eccentric shaft of the outer peripheral portion of the rotor body. And a second protrusion is formed at a position substantially opposite to the eccentric shaft on the outer peripheral portion of the body portion, and the inner peripheral surface of the circular hole of the hook is selectively engaged with the first protrusion or the second protrusion. A coupling device having a plurality of engaging portions is provided.

[0015]

According to the first aspect of the present invention, the eccentric shaft of the rotor is formed with a square wrench insertion hole, and when the rotor is rotated, for example, a square wrench is inserted into the wrench insertion hole and the square wrench is used. Since the rotor is rotated,
Compared to the case where a hexagonal wrench is inserted into a hexagonal insertion hole whose angle is larger than a quadrangle and is nearly circular, the corners of the insertion hole can be prevented from being scraped by the handle lever, and the turning power can be improved. It is possible to increase the permissible force to the rotor and to reliably rotate the rotor while avoiding the licking of the insertion hole by the handle lever. The circular hole of the protrusion and the hook formed on the outer periphery of the rotor due to the rotation. By utilizing the engagement with the engagement portion formed on the inner peripheral surface, the pin of the pin device can be reliably pulled by the hook.

Further, according to the invention of claim 2, a polygonal wrench is inserted into one of the wrench insertion holes, and the protrusion formed on the outer peripheral portion of the body portion is formed on the inner peripheral surface of the circular hole of the hook. While rotating the rotor while sequentially engaging the mating part, the turning power was large, the corner of one wrench insertion hole was scraped by the polygon wrench, and the polygon wrench licked one wrench insertion hole. In this case, insert a wrench that fits this insertion hole into the other wrench insertion hole that has a different number of strokes from the other wrench insertion hole.
The wrench makes it possible to rotate the rotor, and the rotor can be further rotated, and the protrusion formed on the outer periphery of the rotor and the engagement formed on the inner circumferential surface of the circular hole of the hook accompanying the rotation. Utilizing the engagement with the mating part, the hook makes it possible to draw the pin of the pin device further, and to make the tightening margin small.

Further, according to the invention of claim 3, a polygonal wrench having a number of strokes larger than a square is inserted into the wrench insertion hole, and the projection formed on the outer peripheral portion of the body portion is formed on the inner peripheral surface of the circular hole of the hook. While rotating the rotor while sequentially engaging with the engaged parts, the polygonal wrench cuts the corners of the polygonal wrench insertion hole with the polygonal wrench and the polygonal wrench inserts the wrench insertion hole. Even when licked, it is possible to insert a square wrench into the square wrench insertion hole and rotate the rotor with the square wrench, and the polygon wrench is even larger than the turning power when licking the wrench insertion hole The rotor can be rotated by force, and by utilizing the engagement between the protrusion formed on the outer periphery of the rotor and the engagement portion formed on the inner peripheral surface of the circular hole of the hook, the hook can be rotated by the hook. Pull the pin of the pin device further and tighten it It is possible to slightly a.

Further, according to the invention of claim 4, a commercially available and generally used hexagon wrench is inserted into the wrench insertion hole, and the protrusion formed on the outer peripheral portion of the body portion is attached to the inner peripheral surface of the circular hole of the hook. While rotating the rotor while sequentially engaging with the engaging part formed in, the hexagonal wrench inserts the corners of the hexagonal wrench insertion hole, and the hexagonal wrench inserts the wrench insertion hole. Even when it is licked, it is possible to insert a square wrench into the square wrench insertion hole and rotate the rotor with the square wrench, and the hexagon wrench has a force that is greater than the turning force when licking the wrench insertion hole. The rotor can be rotated with the hook, and by utilizing the engagement between the protrusion formed on the outer periphery of the rotor and the engagement portion formed on the inner circumferential surface of the circular hole of the hook, the pin is moved by the hook. Pull the device pin closer and tighten It is possible to slightly white.

Further, according to the invention of claim 5, a hexagon wrench which is usually used is inserted into the insertion hole, and the protrusion formed on the outer peripheral portion of the body portion is formed on the inner peripheral surface of the circular hole of the hook. When rotating the rotor while sequentially engaging the mating part, the turning power is large, and the corners of the hexagonal wrench insertion hole are scraped by the hexagonal wrench, and even if the hexagonal wrench licks the wrench insertion hole. , Insert a square wrench into the square wrench insertion hole,
The square wrench can rotate the rotor, and the hexagon wrench can rotate the rotor with a force larger than the rotating force when the wrench insertion hole is licked. By utilizing the engagement between the protruding part and the engaging part formed on the inner peripheral surface of the circular hole of the hook, the hook further pulls the pin of the pin device to slightly suppress the tightening margin, and the return direction of the rotor. In addition, a hexagonal wrench insertion hole that is closer to a circle than a quadrangle is formed on the inlet side of the insertion hole, and a diagonal line with a diagonal length smaller than the hexagonal wrench insertion hole Since the insertion hole is formed, it is possible to increase the thickness of the outer side of the hexagonal wrench insertion hole and improve the strength of the eccentric shaft.

According to the sixth aspect of the present invention, the hexagon wrench and the hexagonal wrench insertion hole are engaged with each other even when the eccentric shaft is formed with the square wrench insertion hole and the hexagonal wrench insertion hole. It is possible to secure the area and avoid the licking of the insertion hole by the hexagonal wrench as much as possible. Further, according to the invention of claim 7, in the vicinity of the protrusion, the body portion is easily elastically deformed inward, and when the protrusion moves along the inner wall of the circular hole between the engagement grooves, the protrusion is formed. Is displaced toward the center of the rotor, and it is possible to prevent the protrusion from being scraped by the inner wall of the circular hole and to ensure the engagement between the protrusion and the engagement groove.

Further, according to the invention of claim 8, it is of course possible to reduce the cost of the rotor by reducing the number of the protrusions of the rotor as much as possible, and of course, from the first protrusion or the second protrusion of the rotor, for example, 180 It is possible to avoid a strong pressing of the hook of the first protrusion or the second protrusion against the inner circumferential surface of the circular hole by the additional protrusion that occurs when a protrusion is added at a position displaced from the first protrusion or It is possible to prevent the second protrusion from being scraped and ensure the engagement between the first protrusion or the second protrusion and the engagement portion.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the coupling device of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view of an embodiment of a joining device according to the present invention, and is a partially cutaway front view in a state where a prefabricated panel is joined. FIG. 2 is a plan view for explaining a state before assembling the hook storage case of the coupling device, and FIG. 3 is a front view of the same. 4 is a plan view of the rotor, and FIG. 5 is a front view of the rotor. Figure 6
FIG. 6 is a sectional view of the rotor of FIG. 4 taken along the line AA. FIG. 7 is a plan view of the hook member. FIG. 8 is an explanatory diagram of the positional relationship between the engagement groove of the hook member and the protrusion of the rotor. 9 to 11 are explanatory views of a state where the hook member and the rotor are coupled, FIG. 9 is a view of the state where the hook portion is close to the eccentric shaft of the rotor, and FIG. 10 is shown in FIG. FIG. 11 is a view showing a state where the rotor is rotated 45 ° from the position, and FIG. 11 is a view showing a state where the hook portion is away from the eccentric shaft of the rotor.

In FIG. 1, a coupling device F is attached to the frame member W1 of the heat insulating panel D1 which is a prefabricated panel by appropriate means. Further, a pin device P that engages with the coupling device F is attached to the frame member W2 of the heat insulating panel D2 adjacent to the heat insulating panel D1 by appropriate means. The coupling device F and the pin device P constitute a rotary lock.

The hook housing case 1 of the coupling device F is integrally formed of a rigid resin material such as ABS resin having elasticity, and in FIG. 2 and FIG. 3, one side of a pair of rectangular support plates 2 and 3 can be attached. It has a structure in which it is connected by a flexible connecting portion 5. Engaging claws 7 and 8 are vertically formed at the left end of the left support plate 2, and engaging holes 10 and 11 are vertically formed at the right end of the right support plate 8. A bearing hole 13 is formed in the support plate 2, and a bearing recess 14 is formed in the support plate 3. Furthermore, the support plate 3 includes
Storage stopper 21 and pop-out prevention stopper 2
3 is formed to project.

The coupling device storage case 1 is bent by using the connecting portion 5 as a fold, the supporting plate 2 and the supporting plate 3 are opposed to each other, and the pair of engaging claws 7 and 8 are engaged with the engaging holes 10 and 11. Used in combination. 4 to 7, the rotor 31 housed inside the hook housing case 1 is made of an elastic synthetic resin such as polyacetal. This polyacetal is the AB that forms the hook storage case 1.
Harder than S resin and has abrasion resistance. Further, the eccentric shaft 33 of the rotor 31 is rotatably supported by the bearing hole 13 and the bearing recess 14 of the hook storage case 1, and an insertion hole 34 into which a square wrench is detachably inserted is formed. It is formed thicker than the portion 35 in the axial direction. Further, the body portion 35 of the rotor 31 has a disk shape, and a cylindrical wall 35a having a low height is provided on the outer peripheral portion thereof.
Are formed.

One end of the cylindrical wall 35a in the axial direction (see FIG. 5).
In the above, on the upper side), there is a flange 37 for holding the hook.
The a and the protruding portion 38 are formed so as to protrude outward. Further, on the other end of the cylindrical wall 35a in the axial direction, a hook holding flange 37b and a pair of hook holding projections 3 are provided.
9 is formed so as to project outward. This pair of protrusions 3
9 are arranged close to each other. And FIG. 5 and FIG.
As shown in, the cross section has a wedge-shaped right triangular shape, and a step portion 39a that is substantially perpendicular to the surface of the cylindrical wall 35a is formed. Then, an inclined surface that is tapered from the step 39a toward the end of the cylindrical wall 35a is formed. The width of the protrusion 39 (the circumferential direction of the cylindrical wall 35a) and the amount of protrusion (the radial direction of the cylindrical wall 35a) are the length of the protrusion 39 (the cylindrical wall 35a).
Is smaller than the axial direction).

Further, the cylindrical wall 3 is formed on one surface of the body portion 35.
An arcuate recess 40 is formed along the groove 5a.
0 is formed at a position inside the protrusion 39 by being shifted 90 ° clockwise from the eccentric shaft 33 in the circumferential direction.
An arcuate through hole 41 is formed in the. Further, on the outer peripheral surface of the cylindrical wall 35a, the first protrusion 42a for engagement and the second protrusion 42a for engagement are formed.
The protrusion 42b is formed. Of these protrusions, the first protrusion 42a is formed at a position deviated from the eccentric shaft 33 by 90 ° in the circumferential direction, that is, at a position corresponding to the recess 40 and the through hole 41. The second protrusion 42b has an eccentric shaft 33.
It is formed at the farthest position, which is 180 degrees away from. On one surface of the body portion 35, an arcuate recess 43 corresponding to the second protrusion 42b is formed along the cylindrical wall 35a.

In FIG. 7, a circular hole 52 is formed in the hook member 51 assembled with the rotor 31.
The body portion 35 of the rotor 31 is inserted into the circular hole 52,
On the inner peripheral surface of the circular hole 52, the first protrusion 42 a of the rotor 31 is provided.
Alternatively, nine engaging grooves 55 (55a to 55i) that are engaging portions that engage with the second protrusion 42b are formed. These engaging grooves 55 are arranged at the upper and lower ends and right and left ends of the circular hole 52, respectively, four in total, two on the upper right side and three on the lower right side. The hook member 51 is formed of a metal such as iron, and a pulling-side stopper 61 and a loosening-side stopper 62 that come into contact with the protruding portion 38 of the rotor 31 are provided on the surface of the hook member 51.

To assemble the rotor 1 to the hook member 51, the body portion 35 of the rotor 31 is inserted into the circular hole 52 of the hook member 51 from the side where the flange 37b is formed,
Both sides of the hook member 51 are held between the flange 37a and the flange 37b. Then, the pair of protrusions 39 are pressed against the surface of the hook member 51 to be displaced, and the protrusion 39 is passed through the circular hole 52 of the hook member 51 while utilizing the inclined surface of the protrusion 39. That is, the hook portion 51 gets over the pair of protrusions 39. Then, when the protrusion 39 passes through the circular hole 52, the protrusion 39 is located on the surface opposite to the hook member 51. Therefore, the flange 37a and the protrusion 38 are located on one surface side of the hook member 51, and the flange 37b and the pair of protrusions 39 are located on the other surface side. Therefore, the flanges 37a, 37b, which are the locking portions,
The protrusion 38 and the protrusion 39 can prevent the hook member 51 from being separated from the body portion 35 of the rotor 31. Further, since the concave portion 40 and the through hole 41 are formed inside the protrusion 39, the cylindrical wall 3 of the body portion 35 is formed in the vicinity of the protrusion 39.
5a is easily elastically deformed inward, so that when the projection 39 passes through the circular hole 35, the projection 39 is easily displaced toward the center of the rotor 31, and the fitting work can be easily performed with a small force.

The hook member 51 assembled in this way
The rotor 31 and the rotor 31 are relatively rotatable. The eccentric shaft 33 of the rotor 31 is eccentric from the center of the circular hole 52 of the hook member 51. Therefore, as shown in FIG. 9, when the protruding portion 38 of the rotor 31 is in contact with the pulling-side stopper 61, the hook portion of the hook member 51 moves toward the pulling side, that is, the eccentric shaft 33 side (the lower side in the drawing). It is displaced. From this state, if only the rotor 31 is rotated counterclockwise without rotating the hook member 51, as shown in FIG. 10, the hook member 5 is gradually rotated.
The hook portion 1 moves to the loose side, that is, the side away from the eccentric shaft 33. Then, as shown in FIG. 11, when the protruding portion 38 of the rotor 31 is in contact with the loose side stopper 62, it is displaced to the loosest side most.

The eccentric shaft 33 of the rotor 31 to which the hook member 51 that operates in this manner is attached is fitted into the bearing hole 13 or the bearing recess 14 of the hook storage case 1 shown in FIG. Then, the hook storage case 1 is bent at the connecting portion 5, and the pair of engaging claws 7 and 8 are engaged with the engaging holes 10 and 11.
And the coupling device F is manufactured. And FIG.
As shown in FIG. 5, it is attached to the frame member W1 of the heat insulation panel D1 by appropriate means.

Next, the operation of the coupling device having the above structure will be described. In FIG. 1, in order to house the hook member 51 at the protruding position in the hook housing case 1, a rectangular insertion hole 3 formed in the eccentric shaft 33 of the rotor 31 is used.
Insert a handle lever such as a square wrench into 4,
The handle lever rotates the rotor 31 counterclockwise. Here, in the state shown in FIG. 1, since the hook portion of the hook member 51 is engaged with the pin 71 of the pin device P, the hook member 51 does not rotate together with the rotor 31. Therefore, as the rotor 31 rotates in the counterclockwise direction, the portion of the rotor 31 on the side of the protrusion 38 is pin 71.
The hook portion of the hook member 51 is displaced to the loose side, that is, to the right side in FIG. Due to this displacement, the hook portion comes off the pin 71. When the rotor 31 is further rotated counterclockwise, the hook member 51 rotates counterclockwise together with the rotor 31 due to the frictional resistance between the body portion 35 and the circular hole 52. Then, the hook member 51 comes into contact with the storage stopper 21 and is stored in the hook storage case 1.

In order to engage the hook portion of the hook member 51 with the pin 71 from the state where the hook member 51 is housed in the hook housing case 1, the rotor 31 is rotated clockwise. When the rotor 31 is rotated in this manner, the hook member 51 rotates clockwise together with the rotor 31 and projects from the hook storage case 1. Then, when the rotor 31 and the hook member 51 are further rotated,
The hook portion of the hook member 31 contacts the pin 71, and the rotation of the hook member 51 is stopped. In this state, the rotor 31
When is further rotated clockwise, the portion of the rotor 31 on the side of the protrusion 38 is displaced in the direction away from the pin 71, and the hook member 51 is displaced to the left in FIG. Due to this displacement, the hook portion of the hook member 51 engages with the pin 71. Further, when the rotor 31 is rotated clockwise, the concave portion 40 and the through hole 41 are formed inside the first protrusion 42a, so that the body portion 3 is formed in the vicinity of the first protrusion 42a.
The cylindrical wall 35a of 5 is easily elastically deformed inward,
When 2a moves along the inner wall of the circular hole 32 between the engagement grooves, the first protrusion 42a is displaced toward the center of the rotor 31. As a result, the reduction due to the inner wall of the circular hole 32 of the first protrusion 42a can be slightly suppressed, and the engagement between the first protrusion 42a and the engagement groove can be ensured. Further, since the recess 40 is formed inside the second protrusion 42b and the wall thickness is thin, the first protrusion is formed even in the vicinity of the second protrusion 42b.
The cylindrical wall 35 of the body 35 is smaller than the vicinity of the protrusion 42a.
When a is easily elastically deformed inward and the second protrusion 42b moves along the inner wall of the circular hole 32 between the engaging grooves, the second protrusion 42b is slightly displaced toward the center of the rotor 31. , Second
The reduction due to the inner wall of the circular hole 32 of the protrusion 42b can be slightly suppressed, and the engagement between the second protrusion 42b and each engagement groove can be ensured.

When the rotor 31 is rotated, the square insertion hole 34 formed in the eccentric shaft 33 as described above.
For example, a handle lever such as a square wrench is inserted, and the rotor 31 is rotated by the handle lever. Therefore, a hexagon wrench or the like is inserted into a hexagonal insertion hole whose angle is larger than a quadrangle and close to a circle to rotate. Compared with the case of doing so, it is possible to prevent the corners of the insertion hole 34 from being scraped by the handle lever, it is possible to increase the permissible force with respect to the turning force, and it is possible to avoid licking of the insertion hole 34 by the handle lever and to ensure the rotor. 31 can be rotated.

By the clockwise rotation of the rotor 31, the hook portion of the hook member 51 draws the pin 71. The rotation of the rotor 31 may gradually become heavier during this pulling, but in that case, when the first protrusion 42a or the second protrusion 42b is engaged with the engagement grooves 55a to 55i, the rotor 31 is rotated. The rotation of 31 is stopped. In this state, the rotary lock is locked.

Further, in FIG. 8, the deviation from the case where the hook portion of the hook member 51 pulls the pin 71 to the maximum is a tightening margin. Further, the rotational position of the rotor 31 when the pin 71 is pulled to the maximum is set to 0 °. Then, when the tightening margins are 0.5 mm and 3 mm, that is, when the rotation of the rotor 31 is deviated from the above rotation position by 23 ° and 57.5 °, the second protrusion 42b engages with the engaging grooves 55c, 55e.
Engage with. Further, when the tightening margin is 1 mm, that is, when the rotation of the rotor 31 is displaced from the above rotational position by 32 °, the first protrusion 42a engages with the engagement groove 55g. Further, when the tightening margin is 2 mm, that is, when the rotation of the rotor 31 is displaced from the above rotational position by 46 °, the first protrusion 42a engages with the engagement groove 55h. Also, the engaging groove 55
Since d is formed at a position shifted by 45 ° from the rotational position of the rotor 31 when the pin 71 is pulled to the maximum, when the first protrusion 42a is engaged with the engagement groove 55h as described above. The second protrusion 42b substantially engages with the engagement groove 55d.

Thus, in each tightening margin, the first protrusion 42a or the second protrusion 42b is engaged with the engaging grooves 55c, 55.
By engaging d, 55e, 55g and 55h,
Rotation of the rotor 31 in the returning direction, that is, counterclockwise rotation is prevented. That is, when the prefabricated panel is joined, the pin 71
May pull the hook member 51 with a strong force, and in that case, a counterclockwise rotational force is applied to the rotor 31. And the rotor 31 is 23 °, 45 ° or 5
When rotated by 7.5 °, the second protrusion 42b moves into the engagement groove 55c,
Engage with 55d or 55e. Where rotor 3
When 1 rotates by 45 °, for example, the second protrusion 42b engages with the engagement groove 55d as shown in FIG. In this state,
When the hook member 51 is pulled by the pin 71 to the upper side in this figure with a force Y, the opposite direction (downward) force Y is generated on the eccentric shaft 33 as a reaction force, and the lines of action thereof are displaced from each other. Force X is generated. This couple X is applied to the second protrusion 4
It is locked by the engagement of 2b and the engagement groove 55d. The distance between the second protrusion 42b and the eccentric shaft 33 is equal to that of the first protrusion 42b.
Even if the couple X is larger than the distance between a and the eccentric shaft 33 and is large, it can withstand. Therefore, the hook member 51
The engagement between the hook portion and the pin 71 is prevented from loosening. Further, when the second protrusion 42b is engaged with the engagement groove 55d, the first protrusion 42a is substantially engaged with the engagement groove 55h at a position shifted by 46 °, so that the hook member is formed. It is possible to more reliably prevent the engagement between the hook portion of 51 and the pin 71 from loosening.

The engaging groove 55e corresponding to the tightening allowance of 3 mm is provided in advance and is not normally used. Further, the first protrusion 42a or the second protrusion 42b and the engaging grooves 55b, 55c, 55d, 55e, 5
The engagement force with 5g or 55h also differs depending on the position where each engagement groove is formed. For example, in FIG. 5, when the hook member 51 is pulled by the pin 71 toward the loosening side, that is, upward in FIG. 5, each engagement groove formed in the circular hole 52 is also displaced upward. Therefore, the engaging grooves 55b, 55c, 55d, 5 formed on the inner surface on the side far from the hook portion.
5e moves toward the upper side, comes into close contact with the second protrusion 42b, and its engagement becomes firm. As a result, the rotation of the rotor 31 can be reliably prevented. On the other hand, the engaging grooves 55g and 55h formed on the inner surface near the hook portion move in the direction away from the rotor 31,
A gap may be generated between the protrusion 42a and the first protrusion 42a may be loosely engaged with the engagement groove 55g or the engagement groove 55h.

When the pin 71 is pulled to the maximum,
That is, when the design margin is 0, the first protrusion 42a engages with the engagement groove 55f and the second protrusion 42b engages with the engagement groove 55b.
Engage with. At this time, the hook member 5 is attached to the rotor 33.
Although a strong force acts from 1 to the eccentric shaft 33 direction from the side where the second protrusion 42b is formed, the recess 40 having a thin wall portion is formed inside the second protrusion 42b instead of the through hole. 42b
The strength of the periphery can be secured, and even when the force in the eccentric axial direction is applied, the damage of the cylindrical wall 35a can be avoided, and the rotor 3
The second protrusion 42b causes the hole 52 of the hook member 51
While avoiding scraping due to sliding with the pin 71
It is possible to ensure the engagement between the hook member 51 and the pin 71 when being pulled to the maximum.

Further, a first protrusion 42a is formed on the outer peripheral portion of the body portion 35 of the rotor 31 at a position shifted by 90 ° clockwise from the eccentric shaft 33, and a second protrusion is formed at a position substantially opposite to the eccentric shaft 33. The protrusion 42b is formed, and the protrusion of the rotor 31 can be reduced as much as possible to reduce the cost of the rotor 31. Of course, the first protrusion 42 of the outer peripheral portion of the rotor 31 is also provided.
a or inside the circular hole 52 of the hook member 51 of the first protrusion 42a or the second protrusion 42b due to the additional protrusion that occurs when the protrusion is added at a position displaced from the second protrusion 42b by, for example, 180 ° You can avoid a strong pressure on the circumference,
It is possible to prevent the first protrusion 42a or the second protrusion 42b from being scraped and ensure the engagement between the first protrusion 42a or the second protrusion 42b and the engagement groove.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention described in the claims. That is, in the above embodiment, each engaging groove 55
c, 55g, 55h, and 55e are the positions where the rotor 31 has returned 23 °, 32 °, 46 °, and 57.5 ° from the maximum rotation state, and the tightening margin is 0.5 mm, 1 mm, and 2 m.
Although it is formed at a position corresponding to m and 3 mm, the engagement groove may be formed at a position corresponding to a different tightening allowance or more tightening allowances.

Further, in the above embodiment, the second protrusion 4
2b is formed at a position farthest from the eccentric shaft 33 of the rotor 31, but it may be formed at an outer peripheral wall of the cylindrical wall 35a of the rotor 31 on the side farther from the eccentric shaft 33. In addition, when it is formed at the position farthest from the eccentric shaft 33, the effect of preventing the rotation of the rotor 31 is great.

Another embodiment of the present invention will be described below. 12 is a top view of the rotor 31, and FIG. 13 is FIG.
It is a front view of the rotor 31 of FIG. An insertion hole 34 is formed in the eccentric shaft 33 of the rotor 31, and a quadrangular insertion hole 34a is formed from the depth of the insertion hole 34 to, for example, 1/3 of the depth from the inlet. A hexagonal insertion hole 34b having a diagonal length slightly smaller than the diagonal length of the insertion hole 34a is formed up to the bottom of the insertion hole 34. Then, a handle lever which is a commonly used hexagon wrench is inserted into the insertion hole 34b through the insertion hole 34a, and the rotor 31 is rotated counterclockwise by the handle lever. When a large force is applied while the rotor 31 is rotated and the handle lever scrapes the corner of the insertion hole 34b and licks the insertion hole 34b, a handle lever which is a square wrench instead of a hexagon wrench. Is inserted into the insertion hole 34a, and the rotor 31 is rotated by the engagement between the insertion hole 34a and the square wrench.

As described above, in the above embodiment, since the eccentric shaft 33 of the rotor 31 is further provided with the hexagonal insertion hole 34b in the back of the rectangular insertion hole 34a, it is normally commercially available. You can use the hexagon wrench that has been used since then and insert the square wrench even when the hexagon wrench licks the insertion hole 34b while rotating the rotor 31 using the hexagon wrench. The rotor 31 can be further rotated by inserting it into the hole 34a with a square wrench. As a result, even when the rotor 31 cannot be rotated by the hexagonal wrench, the prefabricated panel is connected with the tightening margin as small as possible. Then
Moreover, even when the rotor 31 rotates counterclockwise,
The first protrusion 42a or the second protrusion 42b is engaged with the engagement groove 55b.
The engagement margin can be slightly suppressed by engaging the nearest engagement groove of the engagement grooves 55h.

Further, since the depth dimension of the hexagonal insertion hole 34b is made larger than the depth dimension of the rectangular insertion hole 34a, even when the insertion hole 34a is formed on the inlet side of the insertion hole 34b, a hexagonal wrench is used. The engagement area with the insertion hole 34b can be secured, and licking of the insertion hole 34b with a hexagon wrench can be avoided as much as possible. Another embodiment of the present invention will be described below. 14 is a top view of the rotor 31, and FIG. 15 is a front view of the rotor 31 of FIG.

An insertion hole 34 is formed in the eccentric shaft 33 of the rotor 31.
Is formed, and from the depth of the insertion hole 34 to the depth of, for example, 2/3, it is a hexagonal insertion hole 34b.
From the depth of ⅔ to the bottom of the insertion hole 34, a rectangular insertion hole 34a having a diagonal length slightly smaller than the diagonal length of the insertion hole 34b is formed. Then, a handle lever, which is a commonly used hexagon wrench, is inserted into the insertion hole 34b, and this handle lever is used to rotate the rotor 3
Rotate 1 counterclockwise. Then, when the rotor 31 is rotated, for example, a large force is applied, and the handle lever scrapes the corner of the insertion hole 34b and licks the insertion hole 34b. The rotor 31 is inserted into the insertion hole 34a via the insertion hole 34a and the rotor 31 is rotated by the engagement of the insertion hole 34a and the square wrench.

As described above, in the above embodiment, since the eccentric shaft 33 of the rotor 31 has the quadrangular insertion hole 34a formed further inside the hexagonal insertion hole 34b, it has been conventionally used. You can use the existing hexagon wrench as it is, and even if the hexagon wrench licks the insertion hole 34b while rotating the rotor 31 using the hexagon wrench, insert the square wrench into the insertion hole 34a. The rotor 31 can be further rotated by the square wrench. As a result, even when the rotor 31 cannot be rotated by the hexagonal wrench, the prefabricated panel is connected with the tightening margin as small as possible, and the rotor 31 Even when is rotated counterclockwise, the first protrusion 42a or the second protrusion 42b is engaged with the closest engagement groove of the engagement grooves 55b to 55h. So, it is possible to suppress the tightening white slightly.

Further, since a hexagonal insertion hole 34a which is closer to a circle than a quadrangle is formed on the inlet side of the insertion hole 34, and a quadrangular insertion hole 34b whose diagonal line is shorter than the hexagonal insertion hole 34a is formed. Also, the hexagonal insertion hole 34a can increase the wall thickness of the protrusion 35 on the outer side to improve the strength of the protrusion 35. Further, the hexagonal insertion hole 34
Since the depth dimension of a is made larger than the depth dimension of the rectangular insertion hole 34b, the engagement area between the hexagon wrench and the insertion hole 34a is ensured even when the insertion hole 34b is formed deep in the insertion hole 34a. The licking of the insertion hole 34a by the hexagonal wrench can be avoided as much as possible.

The present invention is not limited to the above-described embodiments shown in FIGS. 12 to 15, and various modifications can be made without departing from the gist of the present invention described in the claims. It is possible to do. That is, it goes without saying that the relationship between the depth of the hexagonal insertion hole 34a and the depth of the square insertion hole 34b may be formed so as to be different from the above ratio, for example.

The shape of the wrench insertion hole is, for example, a quadrangular insertion hole, and further, a polygonal insertion hole having a greater number of strokes, such as a pentagonal stroke, than the quadrangle is formed in the inner side or the insertion opening side of the quadrangle insertion hole. Good. Even with this configuration, if the wrench licks the insertion hole while inserting the wrench that matches the polygonal insertion hole into the insertion hole and rotating the rotor, use a square wrench The rotor can be further rotated by inserting it into the shaped insertion hole.

Further, one wrench insertion hole having a polygonal shape (for example, a pentagonal shape or a hexagonal shape) is formed on the eccentric shaft of the rotor, and one wrench having a number of strokes is inserted at the back of the one wrench insertion hole or the wrench insertion opening side. The other wrench insertion hole of a polygonal shape different from the hole (for example, triangle or quadrangle) is formed, and a plurality of protrusions are formed on the peripheral portion of the rotor, and the protrusion of the rotor is formed on the inner peripheral surface of the circular hole of the hook. By providing a coupling device having a plurality of engaging portions selectively engaged with each other, a polygon wrench with a large number of strokes is inserted into one of the wrench insertion holes with a large number of strokes, and is formed on the outer peripheral portion of the body. While rotating the rotor while sequentially engaging the protruding part with the engaging part formed on the inner peripheral surface of the circular hole of the hook, the turning force is large and the corner of one wrench insertion hole is polygonal. Sharpened with a wrench, polygonal wrench Even if one wrench insertion hole is licked, insert a wrench that fits this insertion hole into the other wrench insertion hole that has a smaller number of strokes than the one with the greater number of strokes, and rotate the rotor with that wrench. It is possible to rotate the rotor with a force larger than the turning force when the wrench licks one of the wrench insertion holes, and with the protrusion formed on the outer periphery of the rotor due to the rotation. By utilizing the engagement with the engagement portion formed on the inner peripheral surface of the circular hole of the hook, the pin of the pin device can be further pulled by the hook and the tightening margin can be made small.

[0052]

The present invention is a coupling device constructed as in the above embodiment. According to the invention of claim 1, a quadratic insertion hole is formed in the eccentric shaft of the rotor to rotate the rotor. When doing so, insert a handle lever such as a square wrench into the insertion hole, and rotate the rotor with this handle lever, so insert a hexagon wrench or the like into the hexagonal insertion hole where the angle of the corner is larger than the square shape and is closer to a circle. Compared with the case of rotating by turning, the corner of the insertion hole can be prevented from being scraped by the handle lever, the permissible force for the turning force can be increased, and the licking of the insertion hole by the handle lever can be avoided to ensure reliability. The rotor can be rotated to
Using the engagement between the protrusion formed on the outer circumference of the rotor and the engagement portion formed on the inner peripheral surface of the circular hole of the hook due to the rotation, the hook of the pin device should be pulled firmly and tightened. Can be slightly suppressed, and rotation of the rotor in the returning direction can be avoided.

According to the second aspect of the present invention, a polygonal wrench is inserted into one of the wrench insertion holes, and the projection formed on the outer peripheral portion of the body portion is formed on the inner peripheral surface of the circular hole of the hook. While rotating the rotor while sequentially engaging the mating part, the turning power was large, the corner of one wrench insertion hole was scraped by the polygon wrench, and the polygon wrench licked one wrench insertion hole. In this case also, insert a wrench that fits this wrench insertion hole into the other wrench insertion hole that has a different number of strokes.
The rotor can be rotated by the wrench, and by utilizing the engagement between the protrusion formed on the outer periphery of the rotor and the engagement portion formed on the inner peripheral surface of the circular hole of the hook, the hook is utilized. This allows the pins of the pin device to be pulled closer and the tightening margin to be reduced.

According to the third aspect of the present invention, a square wrench insertion hole is formed in the eccentric shaft of the rotor, and a polygonal shape having more polygons than the quadrangle is formed in the back of the quadrangle wrench insertion hole or on the side of the wrench insertion port. A wrench insertion hole is formed, insert a polygonal wrench that fits the polygonal wrench insertion hole into the insertion hole, and engage the protrusion formed on the outer peripheral part of the body part with the engagement formed on the inner peripheral surface of the circular hole of the hook. When rotating the rotor while sequentially engaging the parts, the turning power is large, and the corners of the polygonal wrench insertion hole are scraped by the polygonal wrench, and even when the polygonal wrench licks the wrench insertion hole. , A square wrench can be inserted into a square wrench insertion hole and the rotor can be rotated by the square wrench, and the polygon wrench can rotate the rotor with a force almost equal to or greater than the turning force when the wrench insertion hole is licked. Rotate It is possible to further pull the pin of the pin device by the hook by utilizing the engagement between the protrusion formed on the outer circumference of the rotor and the engaging portion formed on the inner peripheral surface of the circular hole of the hook due to the rotation. , Slightly tightening margin, and
Rotation of the rotor in the return direction can be avoided.

According to the invention of claim 4, a wrench insertion hole having a rectangular shape is formed on the eccentric shaft side of the rotor on the side of the wrench insertion opening, and a hexagonal wrench insertion hole is provided in the back of the wrench insertion hole having a rectangular shape. The rotor can be rotated by inserting a hexagon wrench that has been used in the past into the insertion hole, and of course, the protrusion formed on the outer peripheral part of the body is attached to the inner peripheral surface of the circular hole of the hook. While sequentially engaging with the formed engaging portion,
When rotating the rotor, the turning power is large, and even if the corners of the hexagonal wrench insertion hole are scraped by the hexagonal wrench and the hexagonal wrench licks the wrench insertion hole, the square wrench should be replaced with a square wrench insertion hole. The rotor can be rotated with a square wrench, and the rotor can be rotated with a force almost equal to or greater than the turning force when the hex wrench licks the wrench insertion hole. The engagement between the protrusion formed on the outer periphery of the rotor and the engagement portion formed on the inner peripheral surface of the circular hole of the hook is utilized to further pull the pin of the pin device by the hook, and the tightening margin is slightly suppressed. ,
In addition, the rotation of the rotor in the returning direction can be avoided.

According to the invention of claim 5, a hexagonal wrench insertion hole is formed on the side of the eccentric shaft of the rotor on the side of the wrench insertion hole, and the hexagonal wrench insertion hole has a rectangular wrench insertion hole in the back. The rotor can be rotated by inserting a hexagon wrench that has been used in the past into the insertion hole, and of course, the protrusion formed on the outer peripheral part of the body is attached to the inner peripheral surface of the circular hole of the hook. While sequentially engaging with the formed engaging portion,
When rotating the rotor, the turning power is large, and even if the corners of the hexagonal wrench insertion hole are scraped by the hexagonal wrench and the hexagonal wrench licks the wrench insertion hole, the square wrench should be replaced with a square wrench insertion hole. The rotor can be rotated with a square wrench, and the rotor can be rotated with a force almost equal to or greater than the turning force when the hex wrench licks the wrench insertion hole. The engagement between the protrusion formed on the outer periphery of the rotor and the engagement portion formed on the inner peripheral surface of the circular hole of the hook is utilized to further pull the pin of the pin device by the hook, and the tightening margin is slightly suppressed. ,
Moreover, rotation of the rotor in the return direction can be avoided, and a hexagonal wrench insertion hole that is closer to a circle than a quadrangle is formed on the inlet side of the insertion hole, and a hexagonal wrench insertion hole with a diagonal line in the back. Since the shorter rectangular insertion hole is formed, the thickness of the outer side of the hexagonal wrench insertion hole can be increased and the strength of the eccentric shaft can be improved.

Further, according to the invention of claim 6, the depth of the hexagonal wrench insertion hole of the rotor is made larger than the depth of the square wrench insertion hole. Even when the shaped wrench insertion hole is formed, the engagement area between the hexagonal wrench and the hexagonal wrench insertion hole can be secured, and licking of the insertion hole by the hexagonal wrench can be avoided as much as possible.

According to the invention of claim 7, a wrench insertion hole is formed in the eccentric shaft of the rotor, a plurality of protrusions are formed on the outer peripheral portion of the body of the rotor, and the inside of the protrusion penetrates. Since the holes are formed and a plurality of engaging portions that selectively engage with the protrusions of the rotor are formed on the inner circumferential surface of the circular hole of the hook, the body portion is inwardly located in the vicinity of the protrusions. It is easily elastically deformed, and when the protrusion moves along the inner wall of the circular hole between the engagement grooves, the protrusion is displaced toward the center of the rotor, and the protrusion is slightly scraped by the inner wall of the circular hole. As a result, the engagement between the protrusion and the engagement groove can be ensured.

Further, according to the invention of claim 8, a wrench insertion hole is formed in the eccentric shaft of the rotor, and the first projecting portion is located at a position shifted by approximately 90 ° clockwise from the eccentric shaft of the outer peripheral portion of the rotor body. And a second protrusion is formed on the outer peripheral portion of the body at a position substantially opposite to the eccentric shaft, and the inner peripheral surface of the circular hole of the hook is selectively engaged with the first protrusion and the second protrusion. Since a plurality of engaging portions that fit together are formed, the number of protrusions of the rotor can be reduced as much as possible to reduce the cost of the rotor. Of course, from the first protrusion or the second protrusion of the rotor, for example, 1
It is possible to avoid strong pressing of the hooks of the first protrusion or the second protrusion against the inner circumferential surface of the circular hole due to the protrusions formed when the protrusions are formed at positions displaced by 80 °. It is possible to prevent the portion or the second protrusion from being scraped and ensure the engagement between the first protrusion or the second protrusion and the engagement portion.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a joining device according to the present invention, and is a partially cutaway front view in a state where a prefabricated panel is joined.

FIG. 2 is a plan view for explaining a state before assembling the hook storage case of the coupling device.

FIG. 3 is a front view for explaining a state before assembling the hook storage case of the coupling device.

FIG. 4 is a plan view of a rotor.

FIG. 5 is a front view of the rotor.

6 is a sectional view of the rotor of FIG. 4 taken along the line AA.

FIG. 7 is a plan view of a hook member.

FIG. 8 is an explanatory diagram of the positional relationship between the engagement groove of the hook member and the protrusion of the rotor.

FIG. 9 is an explanatory diagram of a state in which the hook member and the rotor are coupled, and is a diagram of a state in which the hook portion is close to the eccentric shaft of the rotor.

FIG. 10 is a view showing a state where the rotor is rotated by 45 ° from the position shown in FIG.

FIG. 11 is a view showing a state where the hook portion is away from the eccentric shaft of the rotor.

FIG. 12 is a plan view of a rotor.

FIG. 13 is a front view of a rotor.

FIG. 14 is a plan view of a rotor.

FIG. 15 is a front view of the rotor.

FIG. 16 is a perspective view of a conventional prefabricated panel.

FIG. 17 is a partially cutaway front view of a conventional coupling device.

FIG. 18 is a partially cutaway front view for explaining an engagement state between a conventional coupling device and a pin.

FIG. 19 is a front view of a conventional hook member.

[Explanation of symbols]

 31 rotor 33 eccentric shaft 34 wrench insertion hole 34a hexagonal wrench insertion hole 34b square wrench insertion hole 41 through hole 42a first protrusion 42b second protrusion 51 hook 52 circular hole 55a engagement groove (engagement portion) 55b Engagement groove (engagement portion) 55c Engagement groove (engagement portion) 55d Engagement groove (engagement portion) 55e Engagement groove (engagement portion) 55f Engagement groove (engagement portion) 55g Engagement groove ( Engagement part) 55h Engagement groove (engagement part) 55i Engagement groove (engagement part)

Claims (8)

[Claims] 1. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and has elasticity, and a circular hole into which the body of the rotor is inserted. In a coupling device including a hook, a wrench insertion hole having a square shape is formed on an eccentric shaft of a rotor, a plurality of protrusions are formed on an outer peripheral portion of a body of the rotor, and an inner peripheral surface of a circular hole of the hook is formed. , A plurality of engaging portions that are selectively engaged with the protrusions of the rotor. 2. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and has elasticity, and a circular hole into which the body of the rotor is inserted. In the coupling device including the hook, one wrench insertion hole having a polygonal shape is formed on the eccentric shaft of the rotor, and the number of strokes is different from the one wrench insertion hole at the back of the one wrench insertion hole or the wrench insertion port side. The other polygonal wrench insertion hole is formed, a plurality of protrusions are formed on the outer periphery of the body of the rotor, and a plurality of protrusions are formed on the inner peripheral surface of the circular hole of the hook to selectively engage the protrusion of the rotor. A coupling device having a plurality of engaging portions. 3. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and has elasticity, and a circular hole into which the body of the rotor is inserted. In a coupling device including a hook, a wrench insertion hole having a square shape is formed on an eccentric shaft of a rotor, and a polygonal wrench having a number of strokes larger than a square is inserted at the back of the wrench insertion hole of the square shape or the wrench insertion opening side. A hole is formed, a plurality of protrusions are formed on the outer peripheral portion of the body of the rotor,
A coupling device, wherein a plurality of engaging portions that selectively engage with the protrusions of the rotor are formed on the inner peripheral surface of the circular hole of the hook. 4. A rotor, which is rotatably supported about an eccentric shaft, has a body having a circular cross section, and has elasticity, and a circular hole into which the body of the rotor is inserted. In the coupling device including the hook, a quadrangle wrench insertion hole is formed on the eccentric shaft of the rotor from the wrench insertion port to a predetermined depth, and a hexagonal wrench insertion hole is formed in the back of the quadrangle wrench insertion hole. A plurality of protrusions are formed on the outer peripheral portion of the body of the rotor, and a plurality of engaging portions that selectively engage the protrusions of the rotor are formed on the inner peripheral surface of the circular hole of the hook. A coupling device characterized by being present. 5. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and is elastic, and a circular hole into which the body of the rotor is inserted. In the coupling device including the hook, a hexagonal wrench insertion hole is formed on the eccentric shaft of the rotor from the wrench insertion port to a predetermined depth, and a rectangular wrench insertion hole is formed at the back of the hexagonal wrench insertion hole. A plurality of protrusions are formed on the outer peripheral portion of the body of the rotor, and a plurality of engaging portions that selectively engage the protrusions of the rotor are formed on the inner peripheral surface of the circular hole of the hook. A coupling device characterized by being present. 6. The coupling device according to claim 4, wherein the depth of the hexagonal wrench insertion hole of the rotor is larger than the depth of the square wrench insertion hole. 7. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and has elasticity, and a circular hole into which the body of the rotor is inserted. In a coupling device including a hook, a wrench insertion hole is formed in an eccentric shaft of a rotor, a plurality of protrusions are formed on an outer peripheral portion of a body of the rotor, and a through hole is formed inside the protrusion. The coupling device is characterized in that a plurality of engaging portions that selectively engage with the protrusions of the rotor are formed on the inner peripheral surface of the circular hole of the hook. 8. A rotor, which is rotatably supported about an eccentric shaft, has a body with a circular cross section, and has elasticity, and a circular hole and a hook portion into which the body of the rotor is inserted. In a coupling device including a hook with a wrench insertion hole formed in the eccentric shaft of the rotor,
Approximately 90 clockwise from the eccentric shaft on the outer circumference of the rotor body
A first protrusion is formed at a position offset by °, a second protrusion is formed at a position substantially opposite to the eccentric axis on the outer peripheral portion of the body portion, and the first protrusion or the second protrusion is formed on the inner peripheral surface of the circular hole of the hook. A plurality of engaging portions that are selectively engaged with the second protrusion are formed.