JP6085154B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener that includes a pair of male members and female members and that is inserted into a hole from a single direction with respect to a hole formed in a predetermined object, and is fixed to the hole. The present invention relates to a fastener that is fixed to a hole without expanding the outer shape of the female member in the hole.

There is known a fastener (one-way fastener) in which a male member and a female member are inserted from one direction into a hole formed in a predetermined object and fixed to the hole.
In general, such a fastener increases the pressing force acting to expand the hole by expanding the outer shape of the female member due to elastic deformation or the like when the male member is inserted into the female member. These are fixed and secured (for example, Patent Documents 1 to 7).

No. 6-45048 Japanese Utility Model Publication No. 7-8619 JP-A-8-61335 JP 2003-148430 A Japanese Patent Laying-Open No. 2005-155738 JP 2006-57666 A JP 2006-161820 A

  However, when the pressing force that expands the hole by expanding the female member in this manner is increased, the hole diameter increases depending on the material of the object in which the hole is formed (for example, corrugated paper). However, if the fasteners are easily dropped out or the fasteners are repeatedly inserted into the holes, the hole diameter will be gradually expanded to loosen the fitting gradually and may not serve as a fastener. It was.

  Further, in the case of a type of fastener in which the male member is screwed into the female member, the female member also rotates within the hole as the male member is screwed in, so that the female member does not rotate. While holding the female member with one hand, it is necessary to screw the male member with the other hand, which is a factor complicating the fixing work. Further, after the fastener is fixed in the hole, if the fastener rotates within the hole, the hole diameter may gradually increase due to wear or the like.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a fastener that can be secured without falling out without expanding a hole.

  In order to achieve the above object, the fastener of the present invention includes a pair of male members and female members, and each of the male members and the female members is inserted from one direction into a hole formed in a predetermined object. The female member has an outer shape that can be inserted into the hole and has a cylindrical portion in which a through passage is formed inside, and one end side of the cylindrical portion. A fixed flange portion that comes into contact with the peripheral edge of the surface of the hole when the hole is inserted, and is provided on the other end side of the cylindrical portion, and fits in the through-passage in the closed state, and in the open state A movable flange portion that contacts the peripheral edge of the back surface of the hole; and a hinge portion that is provided at a joint portion between the cylindrical portion and the movable flange portion and supports the movable flange portion so as to be openable and closable. The member is formed so that it can be inserted into the through-passage And a locking means for fixing the male member inserted into the through passage so that it cannot be removed, and the movable flange portion is in the open state when the male member is inserted into the through passage. It is set as the structure contact | abutted to a periphery.

  According to the fastener of the present invention, the movable flange portion that is supported so as to be opened and closed by the hinge portion is opened by the insertion of the male member, and comes into contact with the peripheral edge on the back surface side of the hole. Without being fixed.

It is a perspective view of a fastener which has a pair of male member and female member concerning one embodiment of the present invention. It is a figure which shows the female member which concerns on one Embodiment of this invention, (a) is a front view, (b) is a side view, (c) is a top view, (d) is an AA cross-section arrow. The view (e) is a BB cross-sectional arrow view. It is a figure which shows the male member which concerns on one Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is CC sectional arrow view, (d) is a figure. It is a bottom view. It is a figure which shows the hollow board | plate material used as the object by which the hole which concerns on one Embodiment of this invention is formed, (a) is a perspective view of the hollow board | plate material of a three-layer structure, (b) is formed in a hollow board | plate material. FIG. It is sectional drawing which shows the insertion procedure of the fastener which concerns on one Embodiment of this invention, (a) is a figure which shows the state which inserted the female member in the hole, (b) inserted the male member in the female member It is a figure which shows a state.

Hereinafter, a preferred embodiment of a fastener according to the present invention will be described with reference to FIGS.
As shown in each figure, the fastener T according to this embodiment includes a pair of female members 1 and a male member 2, and each of the female members 1 and the male members 2 with respect to a hole formed in a predetermined object. Is inserted from one direction and fixed to the hole. For example, the movable flange portion 13 is formed of a synthetic resin fastener T such as ABS or polyacetal and is supported by the hinge portion 14 so as to be opened and closed. The hole is opened by insertion, and can be fixed to the hole without pushing the hole wide by contacting the periphery of the hole on the back side.
In order to exhibit such characteristics, the female member 1 and the male member 2 are configured as follows.
In the following description, as shown in FIG. 4, a flat exterior material (back sheet 101) is provided on both front and back surfaces of a core material (cap sheet 102) subjected to three-dimensional processing (projection 102) to form a hollow structure. , Liner sheet 104) is used as a predetermined object, and the fastener T is fixed to the hole 110 formed in the hollow plate 100.

[Female member]
The female member 1 is a member that is inserted into a hole 110 formed in the hollow plate member 100, and includes a fixed flange portion 11, a cylindrical portion 12, and a movable flange portion 13 as shown in FIGS. I have.
The cylindrical portion 12 is formed in a substantially cylindrical shape, has an outer shape smaller than the hole 110 to be inserted, and includes a tubular through passage 122 into which the male member 2 is inserted. Further, in order to prevent the rotation of the female member 1 in the hole 110, a straight wall portion 121 that is erected substantially linearly along the through-passage 122 is formed. The straight wall 121 is a portion facing one side of the hole 110 (square hole) shown in FIG.
Further, the through passage 122 is provided with two convex portions 123 formed so as to project inward from the inner peripheral surface, and each of them is disposed so as to face each other.

The fixed flange portion 11 is provided on one end portion side of the tubular portion 12, and is a portion that extends outward from the outer peripheral surface of the tubular portion 12 and extends in a direction orthogonal to the tubular portion 12. It is.
A surface of the fixed flange portion 11 on which the cylindrical portion 12 is formed is a surface-side contact portion 11 a that contacts the surface-side peripheral edge 100 a of the hole 110. An insertion port 122a that communicates with the through passage 122 and into which the male member 2 is inserted is formed on the opposite surface (see FIG. 2D).

The movable flange 13 (13a, 13b) is provided on the other end side of the cylindrical portion 12 and performs an opening / closing operation via the hinge portion.
In the present embodiment, two movable flange portions 13a and 13b are provided, each of which is disposed to face each other in the through passage 122, and is formed to be openable and closable as a double door.
Specifically, the movable flange portions 13a and 13b are supported by a hinge portion 14 provided at a joint portion between the through passage 122 and the movable flange portion 13 so that the movable flange portions 13a and 13b can be opened and closed, and in the closed state, FIG. As shown in FIG. 5 (a), it fits in the through-passage 122, and in the open state, as shown in FIG. 5 (b), it is configured to come into contact with the rear surface side peripheral edge 100b of the hole 110.

Each movable flange portion 13 includes a back surface side contact portion 131 that contacts the back surface side peripheral edge 100b of the hole 110 and a contacted portion 132 that contacts a contact surface 221 of the male member 2 described later. As shown in 2 (d), it is formed in a substantially L-shaped cross section.
Further, the hinge portion 14 is a portion (V groove portion) formed by thinning the joint portion between the through passage 122 and the movable flange portion 13, whereby the movable flange portion 13 is opened from the closed state by receiving an external force. Since the external force transmitted to the cylindrical part 12 via the hinge part 14 is relieved when changing to a state, the deformation | transformation which expands the cylindrical part 12 is not performed.
When the external force is released, each movable flange portion is formed by, for example, forming a part of the V-groove thickly (such as providing a rib orthogonal to the V-groove) so that the open state is restored to the closed state. It is also possible to bias 13 to the closed state side.

[Male member]
The male member 2 is a hollow cylindrical member inserted into the through passage 122, and includes a large cylindrical portion 21 and a small cylindrical portion 22, as shown in FIGS. 1 and 3, and the movable flange portion 13 by insertion. Force the position of to open.
The large cylindrical portion 21 has an outer shape (outer diameter) slightly smaller than that of the through passage 122, and a sliding contact surface 211 that is in sliding contact with the through passage 122 at the time of insertion is formed on the outer peripheral surface thereof.
A spiral guide groove 212 that is recessed along the insertion direction of the male member 2 is formed on the sliding surface 211.

As shown in FIG. 3A, the guide groove 212 is provided in two points symmetrically with respect to the point, and at the boundary with the small cylindrical portion 22, the convex portion is inserted as the insertion port when the concave portion and the convex portion 123 are fitted. A mouth 212a is formed.
Further, a rib-like operation piece 23 extending in the diameter direction is provided inside the large cylindrical portion 21, and the male member 2 can be rotated while picking it with a finger.
With such a configuration, the convex portion 123 and the guide groove 212 operate as locking means, and when the male member 2 is inserted into the through passage 122, the operation piece 23 is picked with a finger and the convex portion 123 and the convex portion insertion opening. The male member 2 and the female member 1 are screwed together (locked) by aligning with the 212a and screwing the male member 2 clockwise (CW) along the guide groove 212 while pushing the male member 2 into the through passage 122. ).
Further, the lock release is performed by rotating the counterclockwise (CCW) while grasping the operation piece 23 with a finger so that the screwing is released and the male member 2 can be taken out from the through passage 122.

Further, as shown in FIG. 3 (c), the end portion (entrance) of the convex portion insertion port 212a is a retaining convex portion that prevents the convex portion 123 from falling off from the guide groove 212 as the engaging means of the present invention. 212b protrudes.
Due to the engagement of the protrusions 212 b with the protrusions 123, the protrusions 123 b once act to prevent the protrusions 123 inserted into the guide grooves 212 from the protrusion insertion ports 212 a from falling out of the guide grooves 212.
In addition, when inserting the convex part 123 into the guide groove 212 from the convex part insertion port 212a, the retaining convex part 212b acts so as to prevent the convex part 123 from being inserted. By pushing into the guide groove 212 from the insertion port 212a, the convex portion 123 gets over the retaining convex portion 212b and is inserted into the guide groove 212.
In this way, by preventing the protrusion 123 from dropping from the guide groove 212, the female member 1 and the male member 2 are always inseparably integrated with each other without being fixed to the hole 110 (before being fixed). , It is no longer necessary to lose one of them or manage them individually, making it easier to handle as a product.

The small cylindrical portion 22 is disposed above the large cylindrical portion 21 and forces the movable flange portion 13 to be in an open state when the male member 2 is inserted into the through-passage 122, and maintains an open state in the inserted state. It is a part to be made.
The small cylindrical portion 22 has an outer shape (diameter) slightly smaller than the distance between the contacted portions 132 of the movable flange portions 13a and 13b in the open state, and the outer peripheral surface is contacted when inserted. A contact surface 221 that contacts the portion 132 is formed, and an upper surface 22a is formed in the upper portion.
With such a configuration, when the male member 2 is inserted into the through passage 122, the small cylindrical portion 22 can force the movable flange portion 13 to be in an open state, and can be kept open in the inserted state. .

By inserting the fastener T having the above configuration into the hole 110, for example, the plurality of hollow plate members 100 can be fixed inseparably.
Here, the hollow plate member 100 fixed by the fastener T so as not to be separated is described.
As shown in FIG. 4 (a), the hollow plate 100 is a synthetic resin plate made by laminating a flat exterior material on both the front and back surfaces of a core material that has been subjected to three-dimensional processing to form a hollow structure. As such a hollow plate material, what is generally referred to as a bubble board, plastic corrugated cardboard or the like is known.

  A hollow plate member 100 shown in FIG. 4A includes a cap sheet 102 as a core member formed with a large number of protrusions 103 that bulge in a hollow shape, and one of the air bubbles enclosed in the protrusions 103 to form bubbles. A back sheet 101 as an exterior material and a liner sheet 104 as the other exterior material laminated on the top surface side of the protrusion 103 are provided.

  Such a hollow plate member 100 has, for example, a large number of protrusions that bulge into a hollow shape by bringing molten resin continuously drawn out into a sheet shape into contact with the outer peripheral surface of a forming roll provided with a large number of cavity holes (not shown). The cap sheet 102 is formed by vacuum forming 103, and the cap sheet 102 is formed by the back sheet 101 supplied to the opening side of the protrusion 103 and the liner sheet 104 supplied to the top surface side of the protrusion 103. It can be manufactured by sandwiching them, laminating and integrating them by heat fusion, and then cutting them into a predetermined shape.

Such a hollow plate member 100 is often distributed as a box for storing industrial products, parts, and the like. In this case, a so-called “community box” that repeatedly conveys parts and the like from one factory to another factory. Used as
Such returnable boxes are repeatedly subjected to vibration applied in the middle of conveyance, and dismantling / assembly operations that are alternately deformed from a box shape to a plate shape or from a plate shape to a box shape.
Then, in order to maintain the box shape, a hole is formed in a portion where the hollow plate members 100 are overlapped and joined, and when a conventional fastener is inserted into this hole, the outer shape of the female member 1 is expanded in the hole and removed. Since the fixing is fixed, the hole diameter gradually widens due to vibration, dismantling / assembling work, etc., and the fitting becomes loose. Therefore, there is a problem that a stable box shape cannot be maintained.

On the other hand, the fastener T according to the present invention can fix a plurality of hollow plate members 100 without expanding the hole 110.
Hereinafter, an example in which the two hollow plate members 100 are fixed in an inseparable manner by the fastener T will be described with reference to FIG.
In the present embodiment, two hollow plate members 100 having the same shape of holes 110 (square holes) are overlapped so that the holes 110 communicate with each other, and the female member 1 and the male member 2 are respectively placed in the holes 110. Is inserted from one direction to fix the two hollow plate members 100 inseparably.

First, as shown in FIG. 5A, the female member 1 is inserted into the hole 110.
For insertion, the movable flange portion 13 is placed in the through passage 122 and closed, and is inserted while being aligned so that the straight wall portion 121 and one side of the hole 110 face each other.
Accordingly, the movable flange portion 13 does not get in the way of insertion of the female member 1 into the hole 110, and the straight wall portion can be rotated even if the female member 1 is rotated in the insertion completion state of the female member 1. Since 121 abuts on the opposite side, rotation of the female member 1 in the hole 110 is hindered.

Next, the male member 2 is inserted into the through passage 122.
The male member 2 is inserted into the through passage 122 by holding the operation piece 23 with a finger to align the convex portion 123 with the convex portion insertion port 212a, and pushing the male member 2 into the through passage 122 while guiding the guide groove 212. This is realized by screwing in a clockwise direction (CW).
In such an insertion process, the distal end portion of the contact surface 221 of the small cylindrical portion 22 enters the through passage 122 while pushing the contacted portion 132 of the movable flange portion 13 in the closed state. As a result, the movable flange portion 13 is pushed out of the through passage 122 and gradually changes from the closed state to the open state.
Further, as the male member 2 is screwed in, the rotational force is transmitted to the female member 1 and the female member 1 tries to rotate itself. However, since the straight wall 121 contacts one side of the hole 110, Rotation is impeded. Thereby, the male member 2 can be screwed into the female member 1 without pressing the female member 1 with the hand opposite to the hand that picks up the operation piece 23. That is, the male member 2 can be screwed into the female member 1 with only one hand operation.
In the insertion completion state in which the male member 2 is screwed into the through passage 122, the movable flange portion 13 is in an open state, and the rear surface side contact portion 131 of the movable flange portion 13 contacts the rear surface side peripheral edge 100b of the hole 110. Further, the contact surface 221 of the male member 2 is in contact with the contacted portion 132, and the contact surface 221 inhibits the movable flange portion 13 from returning to the closed state, so that the open state is maintained. To do.
As a result, the two hollow plate members 100 are sandwiched between the fixed flange portion 11 and the movable flange portion 13 at the periphery of the hole 110 and are fixed so as not to be separated.

As described above, the movable flange portion 13 supported by the hinge portion 14 so as to be opened and closed is opened by the insertion of the male member 2 and comes into contact with the peripheral edge on the back surface side of the hole 110, whereby the movable flange portion 13 and the fixed flange portion are provided. 11, the two hollow plate members 100 can be held inseparably so that no external force is applied to the hole 110 so as to spread it.
Accordingly, the diameter of the hole does not gradually increase due to vibration, disassembly, assembly work, or the like, and the fitting between the fastener T and the hole 110 does not become loose.
Further, the distance between the back surface side contact portion 131 of the movable flange portion 13 in the open state and the front surface side contact portion 11a of the fixed flange portion 11 is determined based on the plate thickness of the plural (two) hollow plate materials 100. Further, by slightly shortening, a force F as shown in FIG. 5B can be generated. Since the force F acts on these as a clamping force for clamping a plurality (two) of the hollow plate members 100, these can be firmly fixed.

  As described above, according to the fastener T according to the present embodiment, the movable flange portion 13 supported by the hinge portion 14 so as to be openable and closable is opened by the insertion of the male member 2, and the periphery on the back side of the hole 110 Since it abuts on 100b, it can be fixed to the hole 110 without applying a pressing force that acts to push the hole 110 apart.

As mentioned above, although the fastener of this invention was shown and demonstrated preferable embodiment, the fastener of this invention is not limited only to embodiment mentioned above, A various change implementation is possible in the range of this invention. Needless to say.
For example, in the present embodiment, the two hollow plate members 100 are fixed so as not to be separated, but may be three or more. In addition, the fastener may be fixed to one hollow plate member 100.
Further, the form of the object is not limited to the hollow plate material, and the form is not limited as long as the object can form the hole.

Further, the upper surface 22a is penetrated and the fastener T is used as a hooking hole, or a hole having a screw thread (female screw) is formed in the male member 2 so that a predetermined male screw can be screwed. It can also be used as a fastener.
Moreover, in this embodiment, although two movable flange parts were provided, one may be sufficient and three or more can also be provided.
In the present embodiment, the screwing means is employed as the locking means. However, for example, a locking claw that protrudes outward from the outer peripheral surface of the male member 2 is provided. The hooking means for hooking on the inner peripheral surface (the hole or the concave portion) or the end portion on the movable flange portion 13 side can also be employed.
In this embodiment, the guide groove is provided in the male member 2 and the convex portion is provided in the female member 1 (through passage). However, the guide groove is provided in the female member 1 (through passage) and the convex portion is provided in the male member 2. It can also be provided.

  The present invention can be suitably used as a fastener fixed to a hole formed in a plate-like member or the like.

DESCRIPTION OF SYMBOLS 1 Female member 11 Fixed flange part 12 Cylindrical part 121 Straight wall part 122 Through path 123 Convex part (engagement means, locking means)
13 (13a, 13b) Movable flange portion 131 Back side contact portion 132 Contacted portion 14 Hinge portion 2 Male member 21 Large cylindrical portion 211 Sliding contact surface 212 Guide groove (locking means)
212b Protruding protrusion (engaging means)
22 Small cylindrical part 221 Contact surface 221
T fastener 100 hollow plate material 110 hole

Claims (6)

A fastener that includes a pair of male and female members and that is inserted into the hole from a single direction with respect to a hole formed in a predetermined object and fixed to the hole.
The female member is
A cylindrical portion having an outer shape that can be inserted into the hole and having a through-hole formed on the inside thereof,
A fixing flange provided on one end of the cylindrical portion and abutting against the peripheral edge of the surface of the hole when the hole is inserted;
A movable flange portion that is provided on the other end side of the cylindrical portion, fits in the through-passage in the closed state, and abuts on the rear surface side periphery of the hole in the open state;
A hinge portion that is provided at a joint portion between the tubular portion and the movable flange portion and supports the movable flange portion so as to be openable and closable;
The male member is formed to be insertable into the through-passage,
A locking means for fixing the male member inserted into the through passage so as not to be removable;
The movable flange portion is in the open state when the male member is inserted into the through-passage, and comes into contact with a peripheral edge on the back surface side of the hole, and one end side where the tip is joined to the hinge portion, and the open state The fastener is characterized in that it is formed in an L-shaped cross section that is connected in an L shape to the other end side that sandwiches the object together with the fixed flange portion . The hinge portion is positioned between the front surface side of the hole and the back surface side of the hole in a state where the female member is inserted into the hole.
The fastener according to claim 1. The locking means is
The male member inserted into the through passage and the female member are screwed,
A spiral guide groove formed on one side of the through path or the male member and recessed along the insertion direction of the male member;
3. The fastener according to claim 1, further comprising: a protruding portion formed on the other side of the through passage or the male member in which the guide groove is formed, and fitted in the guide groove. The cylindrical portion, to prevent rotation of the female member in said bore, any one of claims 1 to 3, characterized in that it has a straight wall portion which is erected substantially linearly Fasteners as described in. The said hinge part formed the said junction part thinly. The fastener as described in any one of Claims 1-4 characterized by the above-mentioned. The engagement means which makes the said male member and the said female member engage and unseparably integrate them before fixing to the said hole is provided. Any one of Claims 1-5 characterized by the above-mentioned. The described fasteners.

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