JP7093142B1 - Connecting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting member having further improved workability and convenience. SOLUTION: A first configuration has a hook portion A11 configured to be in contact with one side surface of a planar body W2, and an axis arranged substantially perpendicular to the thickness direction of the planar bodies W1 and W2. A shaft portion with a predetermined distance in the axial direction from the bent portion A3 connecting the portion A2 and the hook portion A11 so as to project substantially perpendicular to the axial direction of the shaft portion A2, and the hook portion A11. The second structure has an insertion hole H through which the shaft portion A2 is inserted, and the shaft portion A2 is inserted into the insertion hole so as to protrude from the hook portion A11. It has a tubular body B1 arranged between the tubular body B1 and a spiral surface B2 constituting one end surface of the tubular body B1, and the projecting portion is configured so as to be in contact with the spiral surface B2. The tubular body B1 including the installation portion main body A41 is configured to be rotatable around the axial direction, and the spiral surface B2 is smooth so as to approach the protrusion main body A41 along the rotation around the axial direction. Is inclined to. [Selection diagram] FIG. 4

Description

The present invention relates to a connecting member that connects a plurality of plate-shaped bodies and objects having a planar body to each other.

As described in Patent Document 1, when connecting a plurality of plate-like bodies or objects having a predetermined planar body such as a side portion of a tubular body, bolts and nuts are used to cover the objects. It is usual to connect (fasten) by sandwiching an object.

Jitsukaisho 61-89512 Gazette

However, when fastening as described above, it is necessary to rotate the nut many times. Therefore, for example, when a large number of bolts and nuts are required depending on the size of the connection target, the fastening work requires a lot of time and labor. It takes.
Further, depending on the usage environment, the screw portion of the bolt may be corroded or stuck due to seizure, which may cause damage to the screw portion and make the fastening state unstable.

The present invention has been made in view of the above-mentioned actual conditions, and an object of the present invention is to provide a connecting member having further improved workability and convenience.

In order to solve the above problems, the present invention is a connecting member including a first structure and a second structure that sandwiches a plurality of planar bodies to be connected.
The first structure includes a hook portion configured to be in contact with one side surface of the planar body, a shaft portion arranged substantially perpendicular to the thickness direction of the planar body, and the hook. A bent portion connecting the portions so as to project substantially perpendicular to the axial direction of the shaft portion and a bent portion connected to the hook portion in the axial direction at a predetermined interval are projected from the shaft portion. With a protruding part,
In the second structure, an insertion hole through which the shaft portion is inserted is formed, and the shaft portion is inserted into the insertion hole, so that a cylinder is arranged between the hook portion and the projecting portion. It has a shape and a helicoid surface that constitutes one end surface of the tubular body.
The projecting portion includes a projecting portion main body configured to be in contact with the spiral surface.
The tubular body is configured to be rotatable around the axial direction.
The spiral surface is smoothly inclined so as to approach the projecting portion main body along the rotation around the axial direction.

According to the present invention, the operator rotates the cylindrical body inserted through the shaft portion while maintaining the arrangement relationship between the first structure and the second structure and each surface, thereby performing a spiral surface. And the main body of the projecting portion can be brought into contact with each other.
Then, by further rotating the tubular body, the operator sandwiches each planar body between the first constituent body (hook portion) and the second constituent body by the reaction force received from the planar body by the hook portion. It becomes possible to connect each planar body.

That is, this connecting member does not require a threaded portion when connecting each planar body, and accordingly, the workability is improved by reducing the labor of the fastening work and the stability of the fastening state is improved. Is possible.

In a preferred embodiment of the present invention, the projecting portion main body is provided with a main portion extending in a direction substantially perpendicular to the axial direction and a hook portion from the main portion along the axial direction. A contact piece projecting to the side is provided, and the spiral surface is configured to be able to contact the end surface of the contact piece.

With such a configuration, the distance between the projecting portion main body and the spiral surface can be shortened with a simple configuration, the labor of fastening work can be further reduced, and the thickness of the planar body to be connected can be matched. It is possible to easily make design changes.

In a preferred embodiment of the present invention, the end surface of the contact piece is an inclined surface having a substantially entire surface thereof so as to be able to contact the spiral surface.

With such a configuration, the frictional force between the end surface of the contact piece and the spiral surface is increased, and the stability of the fastened state is further improved.

In a preferred embodiment of the present invention, the projecting portion includes an extending portion of the shaft portion extending along the axial direction from an end portion on the side where the hook portion is not provided, and the projecting portion includes the projecting portion. The main body of the portion is connected to the extended portion.

With such a configuration, the projecting portion main body is arranged at the end of the shaft portion, and the entire first configuration is configured while appropriately ensuring the distance between the hook portion and the projecting portion main body. It is possible to design it compactly.

In a preferred embodiment of the present invention, the projecting portion is formed with a pair of facing side surface portions whose surface directions are substantially parallel to each other.

With such a configuration, the operator can easily prevent the first configuration from rotating by sandwiching each side surface portion with a fastening tool such as a spanner during the rotational operation of the tubular body. And workability is further improved.

In a preferred embodiment of the present invention, the projecting portion is provided at an end portion on the side where the hook portion is not provided, and a recess recessed toward the hook portion is formed.

With such a configuration, the operator can easily prevent the first configuration from rotating by fitting a tool having a rod-shaped body such as a screwdriver into the recess during the rotational operation of the tubular body. It can be done and workability is further improved.

In a preferred embodiment of the present invention, the projecting portion main body is provided so as to face the hook portion.

With such a configuration, the reaction force received by the hook portion from the planar body becomes close to the direction along the axial direction, and the force for sandwiching the planar body can be efficiently applied, and the connection member can be provided. It can also be applied to the connection between planar bodies having no through hole formed.

In a preferred embodiment of the present invention, the tubular body has a polygonal tubular shape.

With such a configuration, the operator can easily perform the fastening work by sandwiching the side surface of the tubular body with a fastening tool such as a spanner during the rotational operation of the tubular body, and workability is achieved. Is improved.

In a preferred embodiment of the present invention, the shaft portion is formed with a fall prevention portion extending in a direction substantially perpendicular to the axial direction from the outer peripheral surface thereof, and the fall prevention portion includes the hook portion and the hook portion. It is formed between the projecting portion and is configured to be in contact with one side surface of the planar body.

With such a configuration, when connecting a plurality of planar bodies provided with through holes, it is possible to prevent the first structure from moving (falling) downward more than necessary through the through holes. Is possible.
As a result, the shaft portion naturally protrudes above the through hole by a predetermined length, facilitating the insertion work of the cylindrical body and the subsequent fastening work.

According to the present invention, it is possible to provide a connecting member with further improved workability and convenience.

It is a figure which shows the 1st structure of the connection member which concerns on embodiment of this invention, is (a) perspective view, (b) right side view, (c) front view. It is a figure which shows the 2nd structure of the connection member which concerns on embodiment of this invention, (a) perspective view, (b) right side view, (c) front view, (d) plan view, (e) bottom surface. It is a figure. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention. It is a figure for demonstrating the use method of the connection member which concerns on embodiment of this invention.

Hereinafter, the connecting member according to the embodiment of the present invention will be described with reference to the drawings.
The embodiments shown below are examples of the present invention, and the present invention is not limited to the following embodiments.
Further, in these figures, reference numeral X indicates a connecting member according to the present embodiment.

As shown in FIGS. 1 and 2, the connecting member X includes a first structure A and a second structure B that sandwich the planar bodies W1 and W2 (see FIG. 3 and the like) to be connected. ..
For convenience of the following description, the arrow direction in the axial direction d shown in FIGS. 1 (a) and 2 (a) is referred to as an upward direction, and the direction opposite to the arrow direction is referred to as a downward direction.

As shown in FIG. 1, the first structure A has a hook portion A1 configured to be in contact with the lower surface of the planar body W2, and is substantially perpendicular to the thickness direction of the planar bodies W1 and W2. A bending portion A3 that connects the arranged shaft portion A2 and the hook portion A1 so as to project substantially perpendicular to the axial direction d of the shaft portion A2, and a predetermined distance in the axial direction d with respect to the hook portion A1. It has a projecting portion A4 projecting from the shaft portion A2.

The hook portion A1 includes a hook portion main body A11 having a rounded lower portion, and a contact surface A12 which constitutes an upper surface of the hook portion main body A11 and abuts on the lower surface of the planar body W2.

The hook portion main body A11 has a shape in which a substantially semicircular cross-sectional area gradually increases as the hook portion main body A11 is directed from the tip portion toward the bent portion A3.

The contact surface A12 is a smooth surface that extends in a direction substantially perpendicular to the axial direction d and exhibits a semi-elliptical shape.
Further, the protrusion angle r of the contact surface A12 with respect to the shaft portion A2 is configured to be an acute angle as shown in FIG. 1 (b), so that the contact surface A12 gradually rises toward the tip. It is configured to incline toward.
The protrusion angle r is preferably about 85 to 88 degrees, which is close to a right angle.

The shaft portion A2 is formed in a substantially columnar shape.
Further, the shaft portion A2 is formed with a fall prevention portion g extending substantially perpendicular to the axial direction d from the outer peripheral surface thereof.

The fall prevention portion g is formed between the hook portion A1 and the projecting portion A4, and is configured to be in contact with the upper surface of the planar body W1.
Further, the fall prevention portion g has a substantially semi-cylindrical shape in which the disk-shaped body is partially cut off along the axial direction d on the hook portion A1 side.
By doing so, in connecting the planar bodies W1 and W2 described later, when the first structure A is inserted into the through hole k, the fall prevention portion g is prevented from interfering with the peripheral edge of the through hole k. be able to.

The bent portion A3 is smoothly connected to the base ends of the hook portion A1 and the shaft portion A2.
Further, as shown in FIG. 1 (b), the outer line of the bent portion A3 is smoothly curved toward the hook portion A1 and the shaft portion A2, and the lower portion is rounded like the hook portion main body A11. It is tinged.

The projecting portion A4 is formed along the axial direction d from the projecting portion main body A41 configured to be in contact with the spiral surface and the end portion (that is, the upper end) of the shaft portion A2 on the side where the hook portion A1 is not provided. Includes the extension A42, which is extended.

The projecting portion main body A41 is smoothly connected to the extending portion A42 and is provided so as to face the hook portion A1.
That is, in the present embodiment, the lower surface of the main portion A41a described later, or the end surface s of the contact piece A41b described later, and the contact surface A12 are configured to face each other.
The projecting portion main body A41 does not necessarily have to be connected to the extending portion A42, and may project from the outer peripheral surface of the shaft portion A2.

Further, the projecting portion main body A41 has a main portion A41a extending in a direction substantially perpendicular to the axial direction d and a main portion A41a.
From the main portion A41a, an abutting piece A41b projecting from the main portion A41a to the side (that is, downward) where the hook portion A1 is provided is provided along the axial direction d.
The contact piece A41b is smoothly projected from the tip end side of the lower surface of the main portion A41a.

As shown in FIG. 1 (c), the end surface s of the contact piece A41b is an inclined surface whose substantially entire surface is configured to be able to contact the spiral surface B2 described later.

More specifically, the projecting portion A4 is provided with a pair of facing side surface portions m1 having surface directions substantially parallel to each other, and the projecting portion A4 provided at the upper end thereof toward the hook portion A1. A recessed recess m2 is formed.
Further, in the projecting portion A4, a substantially inverted U-shaped groove is formed in the lower portion thereof by the contact piece A41b, and inner Rs are formed in both corners of the groove. In particular, since the inner R on the extension portion A42 side is a portion where stress concentration occurs during the connection work, it works effectively to alleviate the stress concentration.

Each side surface portion m1 forms substantially the entire left and right side surfaces of the projecting portion A4, and is configured so that the surface direction thereof is substantially parallel to the axial direction d.
The front and rear side surfaces of the projecting portion A4 are rounded.

The recess m2 is a substantially U-shaped groove in a side view formed over the projecting portion main body A41 and the extending portion A42.

As shown in FIG. 2, in the second structure B, an insertion hole H through which the shaft portion A2 is inserted is formed, and the shaft portion A2 is inserted into the insertion hole H, whereby the hook portion A1 and the projecting portion A4 are formed. It has a tubular body B1 arranged between the two, a spiral surface B2 forming one end surface (upper surface) of the tubular body B1, and a base portion B3 connected to the lower end surface of the tubular body B1. ing.

The tubular body B1 is configured to be rotatable around d in the axial direction in a state where the shaft portion A2 is inserted into the insertion hole H.
Further, the tubular body B1 has six side surfaces, and thus has a hexagonal tubular shape as shown in FIG. 2 (d).
The number of side surfaces of the tubular body B1 is not limited to this, and may be configured to exhibit a triangular tubular shape, a square tubular shape, or the like.

The spiral surface B2 is composed of a spiral surface main body B21 constituting the upper surface of the tubular body B1 and its outer peripheral edge, and an auxiliary spiral surface B22 connected to the inner circumference of the spiral surface main body B21.

The spiral surface main body B21 is configured to be able to come into contact with the end surface s of the contact piece A41b, and is smoothly inclined (that is,) so as to approach the projecting portion main body A41 along the rotation around the axial direction d. It is rising.
That is, as shown in FIGS. 2 (b) and 2 (c), the spiral surface main body B21 is along the arrow direction (counterclockwise direction) shown in FIG. 2 (d) from the position p1 to the position p2. It is rising smoothly.
In the present embodiment, the spiral surface main body B21 is smoothly inclined along the arrow direction (counterclockwise direction) shown in FIG. 2 (d) so as to approach the projecting portion main body A41. However, it may be configured to incline along the clockwise direction.

The auxiliary helicoid surface B22 has a substantially C-shape in a plan view, and as shown in FIG. 2A, the auxiliary helicoid surface B22 is arranged slightly below the spiral surface main body B21 to assist the spiral surface main body B21. The spiral surface B22 has a stepped shape.
By doing so, it is possible to prevent the inner R on the extension portion A42 side in the groove of the protrusion portion A4 described above from interfering with the spiral surface B2 during the connection work.
Further, the auxiliary helicoid surface B22 is also smoothly inclined so as to approach the projecting portion main body A41 along the rotation around the axial direction d, similarly to the spiral surface main body B21.

The insertion hole H has a substantially circular insertion hole main body H1 and an auxiliary insertion hole extending substantially perpendicular to the axial direction d from the insertion hole main body H1 so that the protrusion A4 can be inserted in addition to the shaft portion A2. By being composed of H2, it has a substantially keyhole shape in a plan view.
As a result, the shaft portion A2 and the extension portion A42 are inserted into the insertion hole main body H1, and the protrusion main body A41 is inserted into the auxiliary insertion hole H2.
In FIGS. 2 (d) and 2 (e), the boundary between the insertion hole main body H1 and the auxiliary insertion hole H2 is virtually shown by a dotted line.

Further, the insertion hole H may be configured such that the side surface of the tubular body B1 is opened by further extending the auxiliary insertion hole H2, and the width thereof is substantially the same as the diameter of the insertion hole main body H1. good.
By doing so, the operator can insert the shaft portion A2 from the auxiliary insertion hole H2 into the insertion hole main body H1.

The base portion B3 is configured as a substantially disk-shaped body having a diameter of the diagonal length of the tubular body B1, and one side surface (lower surface) thereof is configured to be in contact with the upper surface of the planar body W1.
Further, as shown in FIG. 2E, the base portion B3 is provided with a substantially C-shaped recess n having a diameter substantially the same as that of the auxiliary helicoid surface B22, and the planar bodies W1 and W2 are provided. At the time of connection, the fall prevention portion g is stored in the recess n.

Hereinafter, a method of using the connecting member X will be described with reference to FIGS. 3 to 9.
In addition, in FIGS. 3 to 8, an example of connecting two planar bodies W1 and W2 each provided with a through hole k as a connection target will be described.

First, the operator stacks the planar bodies W1 and W2 so that the through holes k communicate with each other, and then inserts the first structure A from the hook portion A1 into the through holes k. The state shown in FIGS. 3 (b) is assumed from (a).

By the above work, the shaft portion A2 is arranged in a direction substantially perpendicular to the thickness direction of the planar bodies W1 and W2 (penetration direction of the through hole k), and the tip of the hook portion A1 is the lower surface of the planar body W2. It will be in a state of contact with. Further, at this time, the fall prevention portion g comes into contact with the upper surface of the planar body W1.
Note that FIG. 3 is a right side view, and the planar bodies W1 and W2 are shown in a cross-sectional view.

Next, the operator puts the second structure B on the first structure A and inserts the shaft portion A2 (and the projecting portion A4) into the insertion hole H, whereby from FIG. 4 (a). The state shown in FIGS. 4 (b) and 4 (c) is assumed.

By the above work, the second structure B (base portion B3) is placed on the upper surface of the planar body W1.
4 (a) and 4 (b) are right side views, FIG. 4 (a) is a planar body W1 and W2, and FIG. 4 (a) is a planar body W1, W2 and a second component B. Is shown in a cross-sectional view.
Further, FIG. 4 (c) is a plan view in FIG. 4 (b), and the cross-sectional view of the second structure B in FIG. 4 (b) is a cross-sectional view taken along the PP'line in FIG. 4 (c). be.

Next, the operator rotates the second structure B in the clockwise direction in a plan view with respect to the shaft portion A2, so that the state shown in FIGS. 6 to 7 is obtained.

At this time, for example, as shown in FIG. 5 (a), the operator sandwiches each side surface portion m1 with a tool T1 for fastening a spanner or the like, or as shown in FIG. 5 (b), a rod-shaped body such as a screwdriver is used. The rotation of the first structure A is prevented by a method such as fitting the holding tool T2 into the recess m2.
Then, for example, as shown in FIG. 5C, the operator rotates the second component B by sandwiching the side surface of the tubular body B1 with the tool T3 for fastening a spanner or the like.

By the above work, the spiral surface main body B21 gradually approaches the end surface s of the contact piece A41b, and as shown in FIG. 7, the spiral surface main body B21 and the end surface come into contact with each other.
6 (a) and 7 (a) are right side views, FIGS. 6 (b) and 7 (b) are front views, and the planar bodies W1 and W2 are shown in sectional views.

Finally, the operator applies (tightens) a force further in the clockwise rotation direction to the second structure B by the tool T3, so that the state shown in FIGS. 7 to 8 is obtained.

By the above work, an upward force is generated on the first component A in a state where the end surface s is crimped to the spiral surface main body B21 due to the inclination of the spiral surface main body B21.
As a result, the contact surface A12 is strongly pressed against the lower surface of the planar body W2, and the planar bodies W1 and W2 are connected in such a manner that the planar bodies W1 and W2 are sandwiched between the hook portion A1 and the base portion B3. ..
Further, at this time, the tip of the contact surface A12 is slightly deformed by the reaction force received from the surface body W2, and the surface direction of the contact surface A12 and the surface directions of the surface bodies W1 and W2 are partially changed. It becomes almost parallel.
8 (a) is a right side view, FIG. 8 (b) is a front view, and the planar bodies W1 and W2 are shown in a cross-sectional view.

As described above, according to the present embodiment, the worker inserts the cylinder through the shaft portion A2 while maintaining the arrangement relationship between the first structure A and the second structure B and the planar bodies W1 and W2. By rotating the body B1, the surface bodies W1 and W2 are sandwiched between the first structure A (hook portion A1) and the second structure B, and the surface bodies W1 and W2 can be connected. can.

That is, the connecting member X does not require a threaded portion when connecting the planar bodies W1 and W2, and accordingly, the workability is improved by reducing the labor of the fastening work and the stability of the fastening state is improved. It becomes possible to do.

Further, the contact piece A41b can shorten the distance between the projecting portion main body A41 and the helicoid surface B2 with a simple configuration, further reduce the labor of the fastening work, and can be used to connect the planar bodies W1 and W2 to be connected. It is possible to easily change the design according to the thickness.

Further, since substantially the entire surface of the end surface s of the contact piece A41b is an inclined surface configured to be able to contact the spiral surface B2, the frictional force between the end surface s of the contact piece A41b and the spiral surface B2 increases. , The stability of the fastened state is further improved.

Further, since the protrusion main body A41 is connected to the extension portion A42, the protrusion main body A41 is arranged at the end of the shaft portion A2, and the hook portion A1 and the protrusion main body A41 are arranged. It is possible to design the entire first structure A compactly while appropriately securing the space between the two.

Further, since the pair of side surface portions m1 are formed on the projecting portion A4, the operator can easily hold each side surface portion m1 with the tool T1 during the rotational operation of the tubular body B1. It is possible to prevent the structure A from rotating, and the workability is further improved.

Further, since the recess m2 is formed in the projecting portion A4, the operator can easily fit the tool T2 into the recess m2 during the rotational operation of the tubular body B1 to easily form the first structure A. It is possible to prevent rotation and workability is further improved.

Further, since the projecting portion main body A41 is provided so as to face the hook portion A1, the reaction force received by the hook portion A1 from the planar bodies W1 and W2 becomes close to the direction along the axial direction d. In addition to being able to efficiently apply the force for sandwiching the planar bodies W1 and W2, the connecting member X can also be applied to the connection between the planar bodies having no through hole formed.

Further, since the tubular body B1 has a hexagonal tubular shape, the operator can easily hold the side surface of the tubular body B1 with the tool T3 during the rotational operation of the tubular body B1 and perform the fastening work. It can be done and workability is further improved.

Further, when the planar bodies W1 and W2 provided with the through holes k are connected by the fall prevention portion g, the first component A moves (falls) downward more than necessary through the through holes k. It is possible to prevent it.
As a result, the shaft portion A2 naturally protrudes above the through hole k by a predetermined length, facilitating the insertion work of the tubular body B1 and the subsequent fastening work.

From the above, the planar bodies W1 and W2 are firmly connected by the cooperation of the first structure A and the second structure B with an easy operation.

Depending on the usage environment and the like, the first structure A and the second structure B are turned upside down, that is, the hook portion A1 abuts on the upper surface of the planar body W1, and the base portion B3 is the planar body W2. The planar bodies W1 and W2 may be connected in such a manner as to abut on the lower surface of the above.
Further, in the above usage example, the thickness direction of the planar bodies W1 and W2 is shown to be the vertical direction, but the operator can use the connecting member X regardless of the thickness direction. It can be used to connect the planar bodies W1 and W2.
Further, in the above usage example, an example of connecting two planar bodies W1 and W2 each provided with a through hole k has been described, but the connection target is not limited to this.

For example, as shown in FIG. 9A, the connecting member X can connect two planar bodies W1'and W2' without a through hole k.
That is, in this case, the operator arranges the first structure A so that the shaft portion A2 faces or abuts on the end faces of the respective planar bodies W1'and W2', and performs the same work as described above. This makes it possible to connect the planar bodies W1'and W2'.

Further, as shown in FIG. 9B, the connecting member X can connect the planar body W1 provided with the through hole k and the planar body W2'without the through hole k. ..
That is, in this case, the operator stacks the planar bodies W1 and W2'in a state where the through hole k and the end surface of the planar body W2'are close to each other, and the first constituent body A is laminated in the through hole k. The planar bodies W1 and W2'can be connected by performing the same work as described above.

The various shapes, dimensions, and the like of each component shown in the above embodiment are examples, and can be variously changed based on design requirements and the like.

Further, in the above embodiment, an example in which the number of planar bodies to be connected is two is shown, but it may be three or more, and in this case, depending on the plate thickness of the entire planar body at the time of stacking. Therefore, the distance from the end surface s to the contact surface A12, the position of the fall prevention portion g, the height of the tubular body B1, and the like can be appropriately changed in design.

Further, in the above embodiment, the example in which the planar body to be connected is a flat plate-like body is shown, but the present invention is not limited to this, and for example, one side surface of a polygonal cylindrical member or a member having an L-shaped cross section. It may be one side surface or the like, and the connecting member X can easily connect such various planar bodies to each other.

X Connection member A First structure A1 Hook part A2 Shaft part A3 Bending part A4 Protruding part B Second structure B1 Cylindrical body B2 Spiral surface H Insertion hole W1, W2, W1', W2'

Claims (8)

A connecting member including a first component and a second component that sandwiches a plurality of planar bodies to be connected.
The first structure includes a hook portion configured to be in contact with one side surface of the planar body, a shaft portion arranged substantially perpendicular to the thickness direction of the planar body, and the hook. A bent portion connecting the portions so as to project substantially perpendicular to the axial direction of the shaft portion and a bent portion connected to the hook portion in the axial direction at a predetermined interval are projected from the shaft portion. With a protruding part,
In the second structure, an insertion hole through which the shaft portion is inserted is formed, and the shaft portion is inserted into the insertion hole, so that a cylinder is arranged between the hook portion and the projecting portion. It has a shape and a helicoid surface that constitutes one end surface of the tubular body.
The projecting portion includes a projecting portion main body configured to be in contact with the spiral surface.
The projecting portion main body has a main portion extending in a direction substantially perpendicular to the axial direction, and a portion projecting from the main portion along the axial direction to the side where the hook portion is provided. With a contact piece,
The tubular body is configured to be rotatable around the axial direction.
The spiral surface is smoothly inclined so as to approach the projecting portion main body along the rotation around the axial direction , and is configured to be able to contact the end surface of the contact piece. Connecting member. The connection member according to claim 1 , wherein the end surface of the contact piece is an inclined surface whose substantially entire surface is configured to be able to contact the spiral surface. A connecting member including a first component and a second component that sandwiches a plurality of planar bodies to be connected.
The first structure includes a hook portion configured to be in contact with one side surface of the planar body, a shaft portion arranged substantially perpendicular to the thickness direction of the planar body, and the hook. A bent portion connecting the portions so as to project substantially perpendicular to the axial direction of the shaft portion and a bent portion connected to the hook portion in the axial direction at a predetermined interval are projected from the shaft portion. With a protruding part,
In the second structure, an insertion hole through which the shaft portion is inserted is formed, and the shaft portion is inserted into the insertion hole, so that a cylinder is arranged between the hook portion and the projecting portion. It has a shape and a helicoid surface that constitutes one end surface of the tubular body.
The projecting portion extends along the axial direction from the projecting portion main body configured to be in contact with the spiral surface and the end portion of the shaft portion on the side where the hook portion is not provided. Including the extension part,
The projecting portion main body is connected to the extending portion and is connected to the extending portion.
The tubular body is configured to be rotatable around the axial direction.
The connecting member whose spiral surface is smoothly inclined so as to approach the projecting portion main body along the rotation around the axial direction. The connecting member according to claim 3 , wherein the projecting portion is formed with a pair of facing side surface portions whose surface directions are substantially parallel to each other. The connection member according to claim 3 or 4 , wherein the protruding portion is provided at an end portion on a side where the hook portion is not provided, and a recessed portion is formed toward the hook portion. The connecting member according to any one of claims 1 to 5 , wherein the projecting portion main body is provided so as to face the hook portion. The connecting member according to any one of claims 1 to 6 , wherein the tubular body has a polygonal tubular shape. A fall prevention portion extending in a direction substantially perpendicular to the axial direction is formed on the shaft portion from the outer peripheral surface thereof.
The connection member according to any one of claims 1 to 7 , wherein the fall prevention portion is formed between the hook portion and the projecting portion and is configured to be in contact with one side surface of the planar body. ..

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