JPH0650756U - Fastener - Google Patents

Abstract

(57) [Summary] [Purpose] To allow a plurality of superposed plates to be easily and quickly fastened or disassembled and reused by one person. [Structure] Inserted into the through holes 2 of two superposed plates 1, the front end 8 is located on the back side of both plates 1 and the rear end 9 is located on the front side of both plates 1. Rod 7 and tip 8 of middle rod 7
And a tip rod 12 which is rotatably supported at a position closer to the center rod 7 than the center of gravity and abuts against the back faces of both plate bodies 1, and a rear end portion 9 of the center rod 7.
The arm 13 is rotatably supported by the base portion 14 and is in contact with the front surfaces of both plate bodies 1, and the bulging portion 18 is formed in the base portion 14 of the arm 13 and is in contact with the front surfaces of both plate bodies 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a fastener that is inserted into and fastened to through holes of a plurality of superposed plates.

[0002]

[Prior art]

 The conventional fastener has the structure shown in FIG. In the figure, 1 is two superposed plate bodies, 2 is a through hole provided through both plate bodies, 3 is a bolt inserted into the through hole 2 through a plain washer 4, and 5 is a bolt 3 It is a nut that is screwed onto the spring washer 6 and the plain washer 4. When the plate bodies 1 are fastened or disassembled, the bolts 3 and the nuts 5 are tightened or loosened.

[0003]

[Problems to be solved by the device]

 In the case of the conventional fasteners described above, the number of parts is large, and the bolts 3 and the nuts 5 are tightened or loosened when the plates 1 are fastened or disassembled. There is a problem that it requires a lot of labor and time. Also, in order to prevent co-rotation, if one person cannot grip the bolt 3 and the nut 5 at the same time, one person is required for each of the bolt 3 side and the nut 5 side, and a lot of manpower is required for the attachment / detachment work. There is a problem of doing.

Furthermore, since the bolt 3 and the nut 5 are easily scratched, there is a problem that they cannot be reused after they have been used once. The present invention has been made in consideration of the above points, and an object of the present invention is to provide a fastener that allows a plurality of superposed plate bodies to be fastened or dismantled by one person in a short time and reused.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the fastener of the present invention is inserted into the through holes of two superposed plate bodies, the front end of which is located on the back side of both plate bodies and the rear end portion of which is formed on both plate bodies. The center rod located on the front side, the tip rod that is rotatably supported at the tip of the center rod at a position closer to the center rod than the center of gravity, and the rear rod that contacts the back of both plates, rotate at the rear end of the center rod. It is provided with an arm which is freely supported and whose base portion abuts on the front surfaces of both plate bodies, and a bulging portion which is formed on the base portion of the arm and which abuts on the front surfaces of both plate bodies.

Further, it is preferable to form a tip rod projection that abuts the middle rod and forms a straight line with the middle rod at the rear end portion of the tip rod. Further, it is desirable to form an intermediate rod protrusion that abuts the arm and forms a straight line with the arm at the rear end portion of the intermediate rod.

[0007]

[Action]

 The fastener of the present invention constructed as described above has a through hole of two superposed plates, a front end of which is located on the back side of both plates and a rear end of which is on the front side of both plates. Since the center rod located at the center rod is inserted and the tip rod of the middle rod is rotatably supported at the position closer to the center rod than the center of gravity, the tip rod that contacts the back of both plates is rotatably supported. When the rod is inserted through the through hole, the tip rod rotates by its own weight and becomes bent with respect to the middle rod, and comes into contact with the back faces of both plate bodies.

At the rear end of the intermediate rod, an arm whose base contacts the front of both plates is rotatably supported, and a bulge that contacts the front of both plates is formed at the base of the arm. At the time of fastening, by pushing the arm downwards, the bulging part of the arm is used as the point of action to pull the tip rod, and the two plates overlapped by the bulging part of the arm are pressed appropriately, and the dead part of the bulging part is pushed. When the point passes, the base of the arm comes into contact with the front surfaces of both plates, and the plates are fastened.

At the time of disassembling, the arm is pushed up in a horizontal state to make the arm linear with respect to the center rod, and at the same time, the tip rod is linear with respect to the center rod, and the fastener is pulled out from the through hole so that both plates are Dismantle. That is, the superposed plates can be fastened or disassembled by one person easily and in a short time, and the fasteners can be reused without being scratched.

Further, since the front rod projection is formed at the rear end portion of the front rod so as to come into contact with the middle rod to form a straight line with the middle rod, at the time of fastening, the front rod protrusion easily comes into contact with the middle rod. It can be straightened in a straight line and its state is maintained, and it can be easily inserted into the through hole.After the insertion, by rotating the middle rod a half turn, the tip rod rotates under its own weight. It can be brought into contact with the back surface of the plate. Also, when disassembling, by rotating it half a turn, the tip rod rotates under its own weight and becomes a straight line in the middle rod, so that the fastener can be pulled out from the through hole more easily and in a shorter time.

Further, since the middle rod projection which is in contact with the arm and forms a straight line with the arm is formed at the rear end of the middle rod, the middle rod projection is brought into contact with the arm at the time of fastening and the arm and the middle rod are connected. It is possible to easily make a straight line, and that state is maintained, and it is easy to insert it into the through hole of the intermediate rod. In addition, by tilting the grasping part of the arm with respect to the base part and lifting the grasping part from the front of both plates with the base part in contact with the front faces of both plate bodies, the fingers can be connected to the plate body at the time of fastening. There is no strong pressure from the arm.

[0012]

【Example】

 One embodiment will be described with reference to FIGS. 1 to 5. In these figures, 7 is a center rod which is inserted into the through hole 2 of both plate bodies 1, and at the time of fastening, the front end portion 8 is located on the back side of both plate bodies 1 and the rear end portion 9 is both plate bodies. Located on the front side of 1. Reference numeral 10 denotes a center groove formed in communication with the tip of the center rod 7 at the tip portion 8, 11 denotes a center shaft penetrating the center groove 10, and 12 denotes a tip rotatably supported by the center shaft 11 at a position closer to the center rod 7 than the center of gravity. It is a rod and contacts the back surface of both plate bodies 1 at the time of fastening.

Reference numeral 13 is an arm composed of a base portion 14 and a grasping portion 15, 16 is an arm groove formed in communication with the front end of the front portion of the base portion 14 of the arm 13, and 17 is an arm shaft penetrating the arm groove 16. The rear end portion of the center rod 7 is rotatably supported by the arm shaft 17, and the base portion 14 abuts on the front surfaces of both plate bodies 1 at the time of fastening, and when the base portion 14 abuts on the grasping portion 15, In order to prevent the fingers from being strongly pressed by the front surfaces of the plate bodies 1 and the grasping portion 15, the grasping portion 15 is slanted out from the rear portion of the base portion 14 and a space is formed between the plate body 1 and the grasping portion 15. It is like this. Reference numeral 18 denotes a bulging portion formed at the tip of the base portion 14, and abuts on the front surfaces of both plate bodies 1 at the time of fastening.

Next, the operation at the time of fastening will be described. The arm 13 is grasped so that the center shaft 11 and the arm shaft 17 are in the vertical direction, the tip rod 12 and the center rod 7 are inserted into the through holes 2 of both plate bodies 1 from one direction, and the arm 13 is rotated 90 degrees. At this time, the tip rod 12 is rotated by its own weight and is bent with respect to the middle rod 7.

Next, when the arm 13 is pushed down, the tip rod 12 is pulled with the bulging portion 18 as the point of action, the both plate bodies 1 are pressed by the bulging portion 18, and when the dead point of the bulging portion is passed, The base portion 14 of the arm 13 comes into contact with the front surfaces of the both plate bodies 1 and the both plate bodies 1 are fastened. When disassembling, the arm 13 is pushed up horizontally, the arm 13 is rotated 90 degrees, the tip rod 12 is made linear with respect to the middle rod 7, and the fastener is pulled out from the through hole 2.

Next, another embodiment will be described with reference to FIGS. 6 to 9. 1 to 5 show the same or corresponding parts, and the difference from FIG. 1 or FIG. 5 is that the front rod projection 19 is formed at the rear end of the front rod 12, The slanted middle rod abutment portion 20 formed in the middle groove 10 of the rod 7 is brought into contact with the front rod projection 19 so as to form a straight line with the middle rod 7. This is a point in which the rod protrusion 21 is formed, and the slanted arm contact portion 22 formed on the base portion 14 of the arm 13 is brought into contact with the middle rod protrusion 21 to form a linear shape with the arm 13. .

Next, the operation at the time of fastening will be described. The arm 13 is rotated to position the tip rod protrusion 19 and the center rod protrusion 21 downward, the arm rod 13 and the tip rod 12 are made linear with respect to the arm 13, and are inserted into the through hole 2 from one direction. The arm 13 is rotated half a turn. At this time, the tip rod 12 rotates by its own weight. Next, the arm 13 is pushed down to draw the tip rod 12 with the bulging portion 18 of the arm 13 as a point of action, and the bulging portion 18 presses both plate bodies 1 and the bulging portion 18 passes through the dead point. At this time, the base portion 14 of the arm 13 comes into contact with the front surfaces of the two plate bodies 1 and the both plate bodies 1 are fastened. When the arm 13 is disassembled, the arm 13 is pushed up horizontally, and when the arm 13 is rotated a half turn, the tip rod 12 rotates by its own weight and becomes linear with respect to the middle rod 7, and the fastener is pulled out from the through hole 2.

[0018]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. In the fastener of the present invention, the front end 8 is located on the rear side of both plates 1 and the rear end 9 is on the front side of both plates 1 in the through hole 2 of the two superposed plates 1. Since the center rod 7 located therethrough is inserted, and the tip rod 8 of the center rod 7 which is in contact with the rear surface of the plate bodies 1 is rotatably supported at a position closer to the center rod 7 than the center of gravity, so that it is in a straight line state. By inserting the rod 7 and the tip rod 12 into the through hole 2, the tip rod 12 is rotated by its own weight to be bent with respect to the middle rod 7, and the tip rods 12 are brought into contact with the back surfaces of both plate bodies 1. Can be contacted.

The rear end 9 of the center rod 7 rotatably supports an arm 13 whose base portion 14 abuts on the front surfaces of both plate members 1. The base portion 14 of the arm 13 supports the front surface of both plate members 1. Since the bulging portion 18 that abuts is formed, when the arm 13 is pushed down at the time of tightening, the bulging portion 18 of the arm 13 acts as a point of action to pull the tip rod 12 and the bulging portion 18 is overlapped. The plate body 1 can be pressed, and when the bulging portion 18 passes through the dead point, the base portion 14 of the arm 13 can be brought into contact with the front surfaces of the plate bodies 1 to fasten the plate bodies 1.

At the time of disassembling, the arm 13 is pushed up horizontally to make the arm 13 linear with respect to the center rod 7, and the tip rod 12 is made linear with respect to the center rod 7, and the fastener is pulled out from the through hole 2. Then, both plates 1 can be disassembled, and the superposed plates 1 can be fastened or disassembled by one person easily and in a short time. Moreover, the fastener is not damaged. It can be reused without arriving.

Further, since the tip rod projection portion 19 is formed at the rear end portion of the tip rod 12 so as to come into contact with the middle rod 7 and to form a straight line with the middle rod 7, the tip rod projection portion 19 is fastened at the time of fastening. 7 can be easily brought into a straight line by abutting against 7, and can be easily inserted into the through hole 2 by maintaining the state, and by inserting the intermediate rod 7 a half turn, The tip rod 12 rotates by its own weight, and the tip rod 12 can be brought into contact with the back surfaces of the plate bodies 1. Further, when disassembling, the tip rod 12 can be rotated by its own weight by rotating it halfway to make it straight on the center rod 7, and the fastener can be pulled out from the through hole 2 more easily and in a short time. be able to.

Further, at the rear end portion of the intermediate rod 7, since the intermediate rod protrusion 21 that is in contact with the arm 13 and forms a straight line with the arm 13 is formed, the intermediate rod protrusion 21 is attached to the arm 13 at the time of fastening. The arm 13 and the center rod 7 can be easily linearized by contacting each other, and the state can be maintained, so that the center rod 7 can be easily inserted into the through hole 2. In addition, when the grasping portion 15 of the arm 13 is inclined with respect to the base portion 14 and the grasping portion 15 is floated from the front surface of both plate bodies 1 with the base portion 14 being in contact with the front surfaces of both plate bodies 1, It is possible to prevent strong pressure on the fingers by the plate body 1 and the arm 13.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view of another state of FIG.

FIG. 4 is a side view of FIG.

FIG. 5 is a plan view of FIG.

FIG. 6 is a partially cutaway side view of another embodiment of the present invention.

FIG. 7 is a plan view of FIG.

FIG. 8 is a side view of another state of FIG.

9 is a plan view of FIG. 8. FIG.

FIG. 10 is a partially cut side view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate 2 Through hole 7 Middle rod 8 Tip part 9 Rear end part 12 Tip rod 13 Arm 14 Base part 18 Swelling part 19 Tip rod protrusion 21 Middle rod protrusion

Claims (3)

[Scope of utility model registration request] 1. A middle rod which is inserted into the through holes of two superposed plate bodies, and whose front end is located at the back side of both plate bodies and whose rear end is located at the front side of both plate bodies. A tip rod rotatably supported at the tip of the center rod at a position closer to the center rod with respect to the center of gravity and abutting against the back surfaces of the plate members, and rotatably supported at the rear end of the center rod. A fastener having an arm whose base portion abuts on the front surfaces of the plate bodies, and a bulging portion formed on a base portion of the arm and abutting on the front surfaces of the plate bodies. 2. The fastener according to claim 1, wherein a tip rod projection portion is formed at a rear end portion of the tip rod so as to come into contact with the middle rod and form a straight line with the middle rod. 3. The intermediate rod projection, which is in contact with the arm and forms a straight line with the arm, is formed at the rear end of the intermediate rod.
Or the fastener according to 2.