JP5586520B2 - Binder - Google Patents

Description

  The present invention is inserted into an insertion hole such as a through-hole in an overlapped object, for example, a laminate of a plant cultivation mat and a support disposed on a rooftop, a folded-plate roof or a wall surface, or other object. And a coupling for coupling them to them.

  Japanese Patent No. 4081118 discloses a synthetic resin having a support 30 made of synthetic resin and a plant growth mat 20 in which fibers are gathered in a laminated state, and having an outwardly protruding retaining point head 40c at the tip. What was couple | bonded by the resin coupling bodies 40 is shown.

  In this way, the plant growth mats laminated on the support and bonded by the combined body are arranged on the rooftop or the folded-plate roof, so that a negative wind pressure is applied to lift upward. Depending on the situation, or for other reasons, various external forces may be applied to deflect the retaining portion of the combined body inward. In that case, it may occur that the bonded body escapes from the through hole of the object and is detached from the object.

Japanese Patent No. 4081118

  The present invention has been made in view of the above-described problems in the prior art, and the purpose of the present invention is when various external forces act to deflect the retaining portion of the combined body inwardly. However, it is to provide a coupler that can effectively prevent the bonded body from coming off the through-hole of the object and detaching from the object.

(1) The coupler of the present invention is
A coupling tool comprising a coupling body and a coupling maintenance body,
The conjugate is
An axial part;
A proximal-side outward projecting portion located on the proximal side of the shaft-shaped portion;
A retaining portion that is located on the distal end side of the shaft-shaped portion and has a distal-side outward projecting portion that sandwiches an object between the proximal-end-side outward projecting portion and can be elastically bent inward;
The base end side outward projecting portion and the shaft-like portion are provided with a penetrating portion that penetrates in the axial direction from the base end in the axial direction to the inner portion of the retaining portion,
The binding maintenance body is:
It has an insertion part that can be inserted from the axial base end side to at least the inner part of the retaining part with respect to the penetration part of the combined body,
The fitting insertion portion has an inward bending preventing portion that can prevent the inward bending of the retaining portion by being positioned inward of the retaining portion in a state of being inserted into the penetration portion. ,
In the state where the fitting insertion portion of the coupling maintenance body is inserted into the penetration portion of the coupling body and the inward bending prevention portion is located at a position where the inward deflection of the retaining portion can be prevented, the coupling maintenance is performed with respect to the coupling body. A structure that prevents the body from moving forward relative to the distal end and the inward deflection preventing portion from reaching a position where it cannot prevent the inward deflection of the retaining portion, and the coupling maintaining body relative to the combined body And a reverse preventing structure for preventing the inward bending preventing portion from reaching a position where the inward bending preventing portion cannot prevent the inward bending of the retaining portion.

  Insert the shaft-shaped part of the combined body from the distal end side, where the proximal-side outward projecting portion projects outward from the proximal-end opening of the through-hole with respect to the through-hole in the overlapping object or other objects Then, the insertion of the combined body stops at the outer peripheral portion of the base end opening of the through hole in the object at the base end side outward projecting portion.

  The tip opening of the through-hole allows the tip-side outwardly protruding portion to pass by elastically bending the retaining portion of the combined body inward, while the retaining portion is restored from the inwardly bent state. If the side outward projecting part cannot pass in the opposite direction, the distal side outward projecting part comes out from the distal end opening of the through hole, and the retaining part is restored from the inwardly bent state. The object is sandwiched between the distal end side outward projecting portion and the proximal end side outward projecting portion.

  In the combined body in this state, the insertion portion of the coupling maintaining body is inserted into the penetrating portion that penetrates the proximal-side outward projecting portion and the shaft-shaped portion in the axial direction from the proximal end in the axial direction to the inner portion of the retaining portion. , And the inward deflection preventing portion in the insertion portion is positioned inward of the retaining portion of the combined body, so that the inward bending of the retaining portion can be prevented.

  This coupling tool is attached to the coupling body in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward bending preventing portion is located at a position where the inward bending of the retaining portion can be prevented. On the other hand, the advancement preventing structure that prevents the inward bending preventing portion from reaching the position where the inward bending preventing portion cannot prevent the inward bending of the retaining portion by the relative advancement of the joint maintaining body relative to the distal end, Is provided with an anti-retraction structure that prevents the inward deflection preventing portion from reaching a position where the inward deflection preventing portion cannot prevent the inward bending of the retaining portion. The inward bending prevention part is maintained at a position where it can prevent the inward bending of the retaining part, and the inward bending of the retaining part is prevented, so that the combined body comes out of the through hole and is detached from the object. Is prevented.

(2) The coupler of the present invention is
As the advance prevention structure, the coupling maintenance body has a leading end receiving part, and the coupling body has a base end receiving part,
In the state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward deflection preventing portion is located at a position where the inward deflection of the retaining portion can be prevented, the proximal end receiving in the coupling body is performed. When the stop portion receives the receiving portion for the front end of the connection maintaining body, the connection maintaining body advances relative to the connection body toward the front end, and the inward bending prevention portion is moved inward of the retaining portion. It can prevent reaching to a position where bending cannot be prevented.

(2-1)
A proximal-side outward projecting portion of the joined body is provided at the proximal end of the joined body, and a proximal-side recessed portion that opens to the proximal end side is formed in the proximal-end-side outward projecting portion, and the proximal side The recess constitutes a receiving portion for the proximal end,
At the base end of the joint maintaining body, a maintenance body base end overhanging portion that can be fitted into the base end side recess is formed in an outwardly projecting shape, and the maintenance body base end overhanging portion has a receiving portion facing the front end. It can be configured.

(3) The coupler of the present invention is
As the above-described retreat prevention structure, the coupling maintenance body has a proximal-direction receiving portion, and the coupling body has a distal-direction reception portion,
In the case where the insertion preventing portion of the coupling maintenance body is inserted into the penetration portion of the coupling body and the coupling maintenance body moves forward relative to the coupling body, the base end of the coupling maintenance body The elastic radial inward displacement of the orientation receiving portion and / or the elastic radial outward displacement of the distal end receiving portion of the combined body does not hinder its advancement,
In a state where the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body and the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented, the front end receiving in the coupling body is performed. When the stop portion receives the base-end-receiving portion in the coupling maintenance body, the coupling maintenance body moves backward relative to the coupling body in the proximal direction, and the inward deflection preventing portion is inside the retaining portion. It is possible to prevent reaching a position where bending to the direction cannot be prevented.

(3-1) The coupling maintenance body has a plurality of proximal leg portions that can be elastically bent radially inwardly on the proximal end side of the insertion portion,
In the base end side leg portion, it has a reverse prevention outward projecting portion provided with a base end facing receiving portion,
When the coupling maintaining body moves forward relative to the coupled body, the proximal leg is elastically bent radially inward, and the proximally-received portion of the outwardly protruding portion that prevents retraction Is elastically displaced radially inward so that its advancement is not hindered,
In the state in which the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body and the inward deflection preventing part is located at a position where the inward deflection of the retaining part can be prevented, the leading end of the coupling body is received. When the portion receives the base-end-receiving portion in the coupling maintenance body, the coupling maintenance body moves backward relative to the coupling body so that the inward deflection preventing portion is inward of the retaining portion. It is possible to prevent reaching a position where it cannot be prevented from bending.

(3-2) The coupler is in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body so that the inward bending prevention portion can prevent the inward bending of the retaining portion. In
The proximal end of the base end side leg of the bonded body is exposed at the proximal end of the bonded body;
A state in which the base end receiving portion of the joint maintaining body is received by the tip end receiving portion of the joint maintaining body by bending the base end portion of the base end side leg portion of the joint maintaining body radially inward. Can be released, and the bond maintaining body can be moved backward relative to the bonded body.

  In this case, in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward bending prevention portion is located at a position where the inward deflection of the retaining portion can be prevented, the base of the coupling maintenance body The base end portion of the end side leg is exposed at the base end portion of the joined body, and the base end of the base end side leg portion of the joined maintenance body is bent inward in the radial direction. It is possible to release the state in which the end receiving part is received by the tip receiving part in the combined body, and to allow the coupling maintaining body to move backward relative to the combined body. .

  By moving the coupling maintenance body backward toward the proximal end relative to the coupling body, the inward bending prevention portion in the insertion portion of the coupling maintenance body is moved from the inner position of the retaining portion of the coupling body to the proximal side. Can be made.

  Thereby, it becomes possible to bend inward of a retaining part, and to detach | leave a coupling body from the through-hole of a target object.

(3-3) The above-mentioned coupler is in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetrating portion of the coupling body, and the inward bending prevention portion can be prevented from bending inward of the retaining portion. In
The base end portion of the base end side leg portion of the joint maintaining body may not protrude from the base end portion of the joint body to the base end side.

  In this case, in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward bending prevention portion is located at a position where the inward deflection of the retaining portion can be prevented, the base of the coupling maintenance body Since the base end of the end side leg does not protrude from the base end of the joined body to the base end side, the base end of the base end side leg of the joint maintaining body is brought radially inward due to an unintended cause such as force majeure. It is possible to prevent the state where the base-end-receiving part in the coupling maintaining body is received by the tip-side receiving part in the combined body by being bent.

  (4) In the couplers according to (1) to (3), the shaft-like portion of the joined body can be elastically bent radially inward, and a plurality of distal-end-side leg portions positioned on the outer peripheral side of the penetrating portion. It is possible to have the above-mentioned retaining portion on the tip side leg portion.

(4-1) The coupling tool has a shaft-shaped portion in the coupled body
An axial cylindrical portion whose inside constitutes the penetrating portion; and
The front end of the front end leg portion has a plurality of front end leg portions that are positioned on the outer peripheral side of the penetrating portion on the front end side in the axial direction of the cylindrical portion and can be elastically bent radially inward. It can have the above-mentioned retaining part on the side.

  (5) The couplers according to (3-1) to (3-3) may include a plurality of shaft-like portions in the joined body that are elastically deflectable radially inward and are located on the outer peripheral side of the penetrating portion. It has a front end side leg part and shall have the above-mentioned retaining part in the above-mentioned front end side leg part.

(5-1) The coupling tool is a receiving crotch portion in which one or more of the crotch portions between the base portions of the adjacent distal leg portions in the coupled body constitute a distal-end-side receiving portion,
The fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body so that the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented, and the circumference of the receiving crotch part in the coupling body The receding prevention outward projecting portion of the proximal end leg portion of the coupling maintaining body is positioned in the directional position so that the receiving crotch portion of the coupling maintaining body is the proximal end of the receding preventing outward projecting portion of the coupling maintaining body. The orientation receiving portion can be received.

(5-2) In the coupling tool, the shaft-shaped portion in the coupled body is
An axial cylindrical portion whose inside constitutes the penetrating portion; and
The front end of the front end leg portion has a plurality of front end leg portions that are positioned on the outer peripheral side of the penetrating portion on the front end side in the axial direction of the cylindrical portion and can be elastically bent radially inward. It can have the above-mentioned retaining part on the side.

  According to the coupling tool of the present invention, in the state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward deflection preventing portion is located at a position where the inward deflection of the retaining portion can be prevented. An advance prevention structure for preventing the inward bending prevention portion from reaching a position where the inward bending prevention portion cannot prevent the inward bending of the retaining portion; On the other hand, since the connection maintaining body is provided with a retraction preventing structure for preventing the inward bending preventing portion from retreating toward the proximal end and preventing the inward bending preventing portion from being bent inward of the retaining portion. The inward bending prevention part of the insertion part is maintained at a position where the inward bending of the retaining part can be prevented, and the inward bending of the retaining part is prevented, so that the combined body comes out of the through hole and is subject to Detachment from the object is prevented.

  Therefore, for example, when the object is a plant cultivation mat or the like disposed on the rooftop or the folded-plate roof and negative wind pressure acts, it tries to bend the retaining portion of the combined body inwardly. Even when various external forces are applied, it is possible to effectively prevent the bonded body from coming out of the through hole of the object and detaching from the object.

It is a perspective view of a coupling body. It is a top view of a coupling body. It is a perspective view of a coupling maintenance body. It is a top view of a coupling maintenance body. It is assembly sectional drawing of a coupling tool. It is sectional drawing of a coupling tool. It is a top view of a coupler. It is explanatory drawing which shows the use condition of a coupling tool. It is explanatory drawing which shows the use condition of a coupling tool. It is explanatory drawing which shows the use condition of a coupling tool.

  (1) An embodiment of a coupler according to the present invention will be described with reference to the drawings. The drawings relate to an example of the embodiment of the coupler of the present invention.

  Each of the couplers R includes a bonded body L and a bonded body M formed by integrally molding a polypropylene resin, and the support 30 and the plant growth mat 20 are laminated and bonded.

  The combined body L includes a shaft-shaped portion L1, a proximal-end-side outward projecting portion L2, a retaining portion L3, and a penetrating portion L4.

  The base end side outward projecting portion L2 is located at the base end of the joined body L and has an annular plate shape whose outer diameter is larger than the outer diameter of the mat coupling through hole 20a.

  The shaft-like portion L1 is provided vertically at the central portion on the distal end side of the proximal-side outwardly extending portion L2 toward the distal end.

  The penetrating portion L4 forms a cylindrical space penetrating in the axial direction from the proximal end to the distal end in the axial direction of the joined body L on the central portion of the proximal-side outwardly extending portion L2 and the center line of the shaft-like portion L1. .

  The shaft-shaped portion L1 includes a pair of distal-side leg portions L1a extending in the axial direction of the combined body L from the distal-side surface of the proximal-side outwardly extending portion L2. The both end side leg portions L1a each have a substantially arcuate cross section in the direction perpendicular to the axial direction of the combined body L (precisely substantially fan-shaped), and both end portions in the horizontal direction of both end side leg portions L1a. Are symmetrically opposed in the radial direction with a predetermined interval therebetween. Each distal end side leg L1a has a distal end that is a free end, and the distal end can be elastically bent radially inward. The through portion L4 is exposed radially outward between the ends of the both end side leg portions L1a.

  One crotch portion and the other crotch portion between the base portions of the both end side leg portions L1a are receiving crotch portions L5 constituting a front end receiving portion.

  The retaining portion L3 is constituted by a distal end portion of the shaft-shaped portion L1, has a distal end side outwardly extending portion L3a that sandwiches the object between the proximal end side outwardly extending portion L2 and is elastic inward. It can be bent. The distal end side outwardly extending portion L3a is formed so as to gradually bulge laterally from the distal end of each distal end side leg portion L1a toward the proximal end side.

  Further, the base end side of the base end side opening having a ring shape having portions projecting radially outward across the central angle of 180 degrees on the base end side of the base end side outward projecting portion L2 A concave portion L2a is formed, and the bottom surface of the base-end-side concave portion L2a forms a base-end-side receiving portion L2a1.

  The connection maintenance body M has the fitting insertion part M1 and the maintenance body base end overhang | projection part M2.

  The insertion part M1 is provided vertically toward the tip. The distal end side of the insertion portion M1 is a columnar portion M1a, and can be elastically deflected radially inward on the proximal end side of the columnar portion M1a, and has a cross-sectional arch shape that is symmetrically opposed in the radial direction. It has a pair of base end side leg part M1b.

  At the base ends of both base end side leg portions M1b, there are plate-like maintenance body base end overhang portions M2 each having a projecting portion protruding radially outward at the center of the arcuate shape. Is formed. Both maintenance body base end overhanging portions M2 are opposed to each other with the gap between the base end side leg portions M1b interposed therebetween, and the front end side surfaces of both maintenance body base end overhanging portions M2 are in the front end receiving portion M2a. Is configured. Both maintenance body base end overhang | projection parts M2 can be accommodated in the base end side recessed part L2a in the base end side outward overhang | projection part L2 of the coupling body L. As shown in FIG.

  Each of the base end side leg portions M1b has a retraction-preventing outward projecting portion M3 formed so as to gradually protrude outward toward the base end in the circumferential central portion on the outer peripheral side. The base end side surface of the overhang portion M3 constitutes the base end facing portion M3a. A gap is formed in the axial direction between the proximal-side received portion M3a and the distal-side surface of the maintenance body proximal end overhanging portion M2.

  The insertion part M1 can reach the tip of the through-hole L4 of the combined body L from the axial base end to the tip. An inward bending preventing portion that can prevent the inward bending of the retaining portion L3 by the intermediate position in the axial direction of the columnar portion M1a being located inward of the retaining portion L3 in a state where the cylindrical portion M1a is fitted into the through portion L4. Configure.

  (2) The plant growth mat 20 is mainly made of a waste fabric waste fiber braided with fibers containing about 80% polyester synthetic fiber and processed into a fiber, which has a low melting point. It was produced using a polyester fiber mixed and dispersed as a binder fiber. That is, a fiber assembly in which these fibers are three-dimensionally assembled to a predetermined thickness without orientation, and a fertilizer and a soil conditioner dispersed therein are heated to a temperature at which the binder fiber melts, and then assembled. Fertilizer in the voids of the fibers by pressing to a thickness of about 20 to 50 mm with respect to the thickness of the state, cooling and curing the binder fibers to bond the fibers together and forming innumerable voids between the fibers And the mat | matte 20 for plant growth to which the soil improvement material was added was obtained. Cylindrical mat coupling through-holes 20a each having an axial direction in the thickness direction are provided at four corners (not limited to this) of the plant growth mat 20 in a square shape (not limited to this) in plan view. ing.

  The support 30 having a square shape (not limited to this shape) in plan view that is substantially the same as the plant growth mat 20 is integrally formed by injection molding of a synthetic resin, and the whole is a saw-like portion. The support portion 32 forming the upper surface portion has a substantially grid-like lattice shape. A large number of through-holes 34 in the upper opening formed uniformly over the entire upper surface portion of the support portion 32 can be inserted through the roots of plants grown on the plant growth mat 20 laminated on the support portion 32. Each of them has a substantially square shape in plan view (the shape of the through hole is not limited to this, and for example, a triangle, a square, a rectangle, other polygons, a circle, an ellipse, etc. can be arbitrarily adopted). The upper surface portion of the support portion 32 has a substantially constant height except for the through-hole 34 and the support-side convex portions 35 provided at the four corner portions (not limited to this) of the support body 30. On the lower side of the support portion 32, a large number of columnar column portions 36 are dispersedly formed. The support column 36 supports the support unit 32 in a state in which the support 30 is mounted on the mounting surface C, and is between the lower end position (mounting surface position) of each support column 36 and the support unit 32. A portion of each of the spaces excluding each column portion 36 is a space forming portion 38.

  The support-side convex portion 35 is provided at a location corresponding to the mat coupling through hole 20 a in the plant growth mat 20. The support-side convex portion 35 has a cylindrical shape protruding slightly upward from the support portion 32, and has an outer diameter slightly smaller than the inner diameter of the mat coupling through hole 20a. The inner peripheral side of the support-side convex portion 35 constitutes an upper portion of the support-coupling hole 39 that penetrates the support portion 32 up and down. The lower end portion of the support coupling hole 39 is formed in an enlarged diameter portion 39a whose inner diameter is slightly enlarged.

  When the plant growth mat 20 is laminated on the support portion 32 of the support 30 so that each support-side convex portion 35 fits in the lower part of the corresponding mat coupling through hole 20a, the plant growth mat 20 is supported on the support 30. The mat mating through hole 20a and the support coupling hole 39 can be vertically communicated with each other by being positioned horizontally on the support portion 32 in 30.

  (3) When the shaft-like portion L1 of the joined body L is inserted from the front end side into the mat joining through hole 20a and the support body joining hole 39 that are laminated in this manner and stacked in the vertical direction, The insertion is stopped by the outer peripheral portion of the base end opening (upper end opening in the drawing) of the mat coupling through hole 20a in the base end side outwardly extending portion L2.

  When the retaining portion L3 of the joined body L is elastically bent inward, the distal end side outward projecting portion L3a can pass through the distal end opening (lower end opening in the drawing) of the support joining hole 39. When the distal end outwardly extending portion L3a comes out of the distal end opening of the through hole and the retaining portion L3 is restored from the inwardly bent state, the distal end side outwardly extending portion L3a faces the support coupling hole 39 in the reverse direction. A state in which a laminate of the plant growth mat 20 and the support 30 as an object is sandwiched between the distal end side outwardly extending portion L3a and the proximal end side outwardly extending portion L2. Become.

  In the combined body L in this state, the coupling is maintained with respect to the penetrating portion L4 penetrating in the axial direction from the proximal end in the base end side L2 and the axial portion L1 to the inner portion of the retaining portion L3. By inserting the insertion part M1 of the body M and setting the inward bending prevention part in the insertion part M1 to be inward of the retaining part L3 of the joined body L, the inward bending of the retaining part L3. Is prevented. The maintenance body base end overhanging portion M2 at the base end of the coupling maintenance body M is fitted into the base end side recess L2a and does not protrude outward. In a state where the fitting insertion portion M1 of the coupling maintenance body M is fitted into the through-hole L4 of the coupling body L and the inward bending prevention portion is located at a position where the inward deflection of the retaining portion L3 can be prevented. The base-end-receiving part L2a1 in FIG. 2 receives the front-end-receiving part M2a in the connection maintaining body M, thereby preventing the connection maintaining body M from moving forward relative to the connection body L. .

  In the coupling body L, the fitting insertion portion M1 of the coupling maintenance body M is fitted and inserted into the penetration portion L4 of the coupling body L so that the inward bending prevention portion can prevent the inward bending of the retaining portion L3. The receding prevention outward projecting portion M3 in the base end side leg M1b of the coupling maintaining body M is positioned at the circumferential position of the receiving crotch L5, whereby the receiving crotch L5 in the coupled body L is coupled to the coupling maintaining body. It is possible to receive the receiving part M3a facing the base end of the outwardly protruding part M3 for preventing retraction in M.

  When the coupling maintenance body M moves forward relative to the coupling body L, the proximal leg M1b elastically bends radially inward and faces the proximal end of the receding prevention outward projection M3. When the receiving portion M3a is elastically displaced radially inward, the forward movement is not hindered, and the fitting insertion portion M1 of the coupling maintenance body M is fitted into the penetration portion L4 of the coupling body L so as to be inward. In a state where the bending prevention portion is located at a position where the inward bending of the retaining portion L3 can be prevented, the distal end receiving portion in the coupling body L replaces the proximal end receiving portion M3a in the coupling maintenance body M. By receiving, the binding maintenance body M is prevented from moving backward relative to the binding body L toward the proximal end.

  In a state where the fitting insertion portion M1 of the coupling maintenance body M is fitted into the through-hole L4 of the coupling body L and the inward bending prevention portion is positioned at a position where the inward deflection of the retaining portion L3 can be prevented. The base end portion of the base end side leg portion M1b of M is exposed at the base end portion of the joined body L, and the base end portion of the base end side leg portion M1b of the joint maintaining body M is bent inward in the radial direction. Accordingly, the state where the base-end-receiving part M3a in the coupling body M is received by the tip-side receiving part in the coupling body L is released, and the coupling body M is relatively proximal to the coupling body L. It may be possible to retract in the direction.

  By retracting the coupling maintenance body M relatively toward the proximal end, the inward deflection preventing portion of the fitting insertion portion M1 of the coupling maintenance body M is moved from the inner position of the retaining portion L3 of the coupling body L to the proximal end side. Can be moved.

  Thereby, the inward bending of the retaining portion L3 is enabled, and the combined body L can be detached from the through hole of the object.

  (4) The coupling tool includes a coupled body and a binding maintenance body, and an object to be bound by the bound body (or an object to which the bound body is bound, for example) is not particularly limited. In addition, a plant cultivation mat disposed on a rooftop, a folded-plate roof, a wall surface, or the like, or a support that supports the mat can be mentioned.

  Both the bonded body and the bonded body are preferably formed by integrally molding a synthetic resin (for example, polypropylene resin, polyamide resin, etc.).

  (5) The combined body includes a shaft-shaped portion, a proximal-end-side outward projecting portion, a retaining portion, and a penetrating portion.

  The axial portion of the combined body is, for example, a cylindrical portion, a leg portion, or a combination thereof, such as a cylindrical shape, extending in the axial direction of the combined body (that is, the axial direction coincides with or parallel to the axial direction of the combined body). A leg portion may be provided on the tip end side in the axial direction of the portion. Examples of the cylindrical part include a cylindrical part and a polygonal cylindrical part, and the leg part is, for example, along the axial direction of the joined body radially outward from the axial center line of the joined body, and the tip is It is a free end, and the tip end side can be elastically bent radially inward. For example, a plurality of such leg portions can be provided around the axial center line of the combined body with a circumferential interval therebetween. The cross-sectional shape of the leg portion in the direction perpendicular to the axial direction of the combined body is, for example, substantially arc-shaped or fan-shaped (two arcs having the same size and position of the center and central angle and different radii and their A figure surrounded by two radii passing through both ends of the arc), a rectangular shape, and other polygonal shapes. It is desirable that the tip of the shaft-like portion be formed in a tapered shape so that the shaft-like portion can be easily inserted into a through-hole or the like of the object.

  The proximal end outward projection is located on the proximal side of the shaft-shaped portion. The position of the base end side outward projecting portion is not limited to the base end of the shaft-shaped portion. The shape of the proximal-side outward projecting portion can be, for example, an annular plate-shaped portion or a butterfly-shaped plate-shaped portion that is perpendicular to the axial direction of the combined body.

  The retaining portion is located on the distal end side of the shaft-shaped portion, and has a distal-side outward projecting portion that sandwiches the object between the proximal-side outward projecting portion and can be elastically bent inward. is there. For example, in a leg portion along the axial direction of the coupled body radially outward from the axial center line of the coupled body, the distal end being a free end, and the distal end side being capable of elastically bending radially inward The thing which provided the front end side outward projection part in the radial direction outer side of the front-end | tip part can be mentioned.

  The penetrating portion penetrates the proximal-side outward projecting portion and the shaft-shaped portion in the axial direction from the proximal end in the axial direction of the combined body to the inner portion of the retaining portion. Generally, the penetrating portion penetrates to the tip in the axial direction, but does not necessarily need to reach the tip. The penetrating portion can have, for example, a circular cross section, but is not limited thereto, and can also have, for example, a polygonal cross section.

  (6) The coupling maintenance body has an insertion part. The insertion part can be inserted from the axial base end side to at least the inner part of the retaining part with respect to the penetrating part of the combined body, and is located inside the retaining part in a state of being inserted into the penetration part Therefore, it has an inward bending prevention part which can prevent the inward bending of the retaining part. The fitting part can reach the tip of the penetrating part or reach the tip of the penetrating part, but can also not reach the tip of the penetrating part, and can be inserted over the entire length of the penetrating part. It doesn't need to be. The cross-sectional shape of the fitting insertion part may be the same as or different from the cross-sectional shape of the penetration part of the combined body, but the inward bending prevention part is located on the inner side of the retaining part. It must have sufficient dimensions and rigidity to prevent inward deflection. However, the inward bend prevention part only needs to be able to prevent the inward bending of the retaining part to the extent that the combined body can be prevented from coming off from the object due to the retaining part being deflected inward.

  (7) The coupling tool is coupled in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetrating portion of the coupling body and the inward bending prevention portion is located at a position where the inward bending of the retaining portion can be prevented. A forward maintaining structure that prevents the inward bending preventing portion from reaching the position where the inward bending preventing portion cannot prevent the inward bending of the retaining portion, and the bonded body is coupled to the combined body. There is provided a retraction preventing structure for preventing the maintenance body from retreating relatively toward the proximal end and preventing the inward bending preventing portion from reaching a position where the inward bending of the retaining portion cannot be prevented.

  As the advance prevention structure, for example, the joint maintaining body has a receiving part for the front end and the joint has a receiving part for the base end, and the fitting insertion part of the joint maintaining body is fitted in the through part of the joint body. In the state where the inward deflection preventing portion is inserted and positioned at a position where the inward deflection of the retaining portion can be prevented, the proximal end receiving portion in the combined body is replaced with the distal end receiving portion in the combined maintaining body. By receiving it, it is possible to prevent the coupling maintaining body from moving forward relative to the coupled body so that the inward deflection preventing portion reaches a position where the inward deflection of the retaining portion cannot be prevented. .

  Examples of the receiving member for the front end constituting the advancement preventing structure in the coupling maintenance body include other surfaces such as a surface perpendicular to or inclined with respect to the axial direction, for example, a proximal end portion or an axial middle portion of the coupling maintenance body The surface of the front end side of the outward projecting part in the case where the outward projecting part is provided in the part can be exemplified.

  In addition, examples of the base-end-side receiving portion that constitutes the advance prevention structure in the combined body include a surface that is perpendicular or inclined with respect to the axial direction, for example, a base-end-side surface of the base-end-side outward projecting portion of the combined body. Or the surface of the base end side of other parts, such as an axial direction intermediate part, or the head-like part provided in the base end of the conjugate as the base end side outward projection A surface on the base end side can be mentioned.

  That is, for example, the base end side outward projecting portion of the joined body is provided at the base end of the joined body, and the base end side outward projecting portion is formed with a base end side recessed portion that opens to the base end side. The proximal-side concave portion constitutes a proximal-side receiving portion, and a maintenance body proximal-end overhanging portion that can be fitted into the proximal-side concave portion is formed in an outwardly protruding shape at the proximal end of the coupling maintenance body, A maintenance body base end overhang | projection part shall comprise the receiving part for front ends. In addition, the maintenance body base end overhanging portion at the base end of the joint maintenance body may be accommodated in the base end side recessed portion in the base end side outward projecting portion of the combined body and not protrude outside the base end side recess. desirable.

  As the structure for preventing retreat, for example, a receiving portion facing the base end (for example, a surface perpendicular or inclined with respect to the axial direction) is provided on the coupling maintaining body, and a receiving portion facing the distal end (for example, vertical or inclined with respect to the axial direction). And the anti-retraction structure has an elastic diameter of the receiving portion facing the base end of the coupling maintaining body when the coupling maintaining body moves forward relative to the coupled body. Due to the inward displacement in the direction and / or the elastic radial outward displacement of the front-end-side receiving portion of the combined body, the insertion portion of the coupling maintaining body is inserted into the penetrating portion of the combined body without hindering its advancement. In the state where the inward bending preventing portion is positioned at a position where the inward bending of the retaining portion can be prevented, the distal end receiving portion in the combined body receives the proximal end receiving portion in the combined maintaining body. By doing so, the bond maintenance body moves backward relative to the bond body toward the proximal end. Preventing portion bending can be made to prevent reaching the position that can not prevent the bending inward of the retaining portion.

  As an example of the connection maintaining body constituting such a receding prevention structure, it is possible to elastically bend radially inward on the base end side of the fitting insertion portion (it can also be bent radially outward). It may have a plurality of base-end-side legs, and the base-end-side legs (preferably two or more base-end-side legs) are provided with a base-end facing receiving portion. When the coupling maintaining body moves forward relative to the coupled body with the projecting portion, the proximal leg portion elastically bends radially inward and the base of the receding prevention outward projecting portion When the end receiving portion is elastically displaced radially inward, the forward movement is not hindered, and the fitting insertion portion of the coupling maintenance body is fitted into the through portion of the coupling body to prevent the inward deflection. In a state where the retaining portion is located at a position where the inward bending of the retaining portion can be prevented, the distal end receiving portion in the combined body is the proximal end receiving portion in the combined maintaining body. By receiving it, it shall be prevented that the joint maintaining body moves backward relative to the joined body relative to the joined body and the inward bending preventing portion reaches a position where the inward bending of the retaining portion cannot be prevented. Can do.

  In this case, the coupling maintenance body is in a state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward bending prevention portion is located at a position where the inward bending of the retaining portion can be prevented. The base end portion of the base end side leg portion of the joint maintaining body is exposed at the base end portion of the joint body, and the base end portion of the base end side leg portion of the joint maintaining body is bent inward in the radial direction. The state where the base-end-receiving part in the body is received by the front-end receiving part in the combined body is released, and the coupling maintaining body can be moved backward relative to the combined body. Can be. In this case, the base end portion of the base end side leg portion of the coupling maintenance body is configured such that the fitting insertion portion of the coupling maintenance body is inserted into the through portion of the coupling body, and the inward bending prevention portion is bent inward of the retaining portion. In a state where it can be prevented, it can be assumed that it does not protrude from the base end portion of the combined body to the base end side.

  These base end side leg portions (in the case of a plurality, a part or all of them) may be formed such that all or part of the maintenance body base end overhanging portion is formed at the base end. Moreover, the maintenance body base end overhang | projection part shall be able to be accommodated in the base end side recessed part in the base end side outward overhang | projection part of a coupling body.

  (8) In the coupled body, the distal-side receiving portion is located at a predetermined circumferential position, and in the coupled maintenance body, the proximal-side received portion is positioned at a predetermined circumferential position, and On the other hand, only when the coupling maintenance body has a predetermined positional relationship in the circumferential direction, the front-end-side receiving portion in the coupling body can receive the base-end-side receiving portion in the coupling maintenance body. be able to.

  When the shaft-like portion in the combined body has a plurality of tip-side leg portions positioned on the outer peripheral side of the penetrating portion, which can be elastically bent radially inward, the adjacent tip-side leg portions in the combined body One or two or more of the crotch portions between the base portions may be the receiving crotch portion that constitutes the leading end receiving portion. In addition, the coupling maintaining body has a plurality of base end side leg portions that can be elastically bent radially inwardly on the base end side of the insertion portion, and the base end side leg portion has a base end direction. It is possible to have a reverse preventing outward projecting portion provided with a receiving portion. In that case, the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body, and the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented, and the receiving crotch in the coupling body The receding prevention outward projecting portion in the base end side leg portion of the joint maintaining body is positioned at the circumferential position of the joint maintaining portion, so that the receiving crotch portion in the joint body is the base of the receding prevention outer projecting portion in the joint maintaining body. The end-side receiving part can be received.

20 Plant growth mat 20a Mat coupling through hole 30 Support body 32 Support section 34 Through hole 35 Support body side convex section 36 Support section 38 Space forming section 39 Support body coupling hole 39a Wide diameter section C Mounting surface L Combined body L1 Shaft-like portion L1a Tip side leg L2 Base end side outward projection L2a Base end side recess L2a1 Base end receiving portion L3 Stopping portion L3a Tip side outward projection L4 Through portion L5 Stop crotch portion M Maintenance body M1 Insertion part M1a Cylindrical part M1b Base end side leg part M2 Maintenance body base end overhanging part M2a Front end facing receiving part M3 Retraction prevention outward projecting part M3a Base end facing receiving part R

Claims (8)

A coupling tool comprising a coupling body and a coupling maintenance body,
The conjugate is
An axial part;
A proximal-side outward projecting portion located on the proximal side of the shaft-shaped portion;
A retaining portion that is located on the distal end side of the shaft-shaped portion and has a distal-side outward projecting portion that sandwiches an object between the proximal-end-side outward projecting portion and can be elastically bent inward;
The base end side outward projecting portion and the shaft-like portion are provided with a penetrating portion that penetrates in the axial direction from the base end in the axial direction to the inner portion of the retaining portion,
The binding maintenance body is:
It has an insertion part that can be inserted from the axial base end side to at least the inner part of the retaining part with respect to the penetration part of the combined body,
The fitting insertion portion has an inward bending preventing portion that can prevent the inward bending of the retaining portion by being positioned inward of the retaining portion in a state of being inserted into the penetration portion. ,
In the state where the fitting insertion portion of the coupling maintenance body is inserted into the penetration portion of the coupling body and the inward bending prevention portion is located at a position where the inward deflection of the retaining portion can be prevented, the coupling maintenance is performed with respect to the coupling body. A structure that prevents the body from moving forward relative to the distal end and the inward deflection preventing portion from reaching a position where it cannot prevent the inward deflection of the retaining portion, and the coupling maintaining body relative to the combined body It is equipped with a retraction prevention structure that prevents the inward bending prevention part from reaching the position where it cannot prevent the inward bending of the retaining part by retreating toward the proximal end .
As the retreat prevention structure, the coupling maintenance body has a proximal-direction receiving portion, and the coupling body has a distal-direction reception portion,
The coupling maintenance body has a plurality of proximal leg portions that can be elastically bent radially inwardly on the proximal end side of the fitting insertion portion,
In the base end side leg portion, it has a reverse prevention outward projecting portion provided with a base end facing receiving portion,
When the insertion part of the coupling maintenance body is inserted into the penetration part of the coupling body and the coupling maintenance body moves forward relative to the coupling body, the base end side leg portion is elastic inward in the radial direction. When the base-end-side receiving portion of the outwardly protruding portion that is bent backward is elastically displaced radially inward, its advancement is not hindered,
In a state where the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body and the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented, the front end receiving in the coupling body is performed. When the stop portion receives the base-end-receiving portion in the coupling maintenance body, the coupling maintenance body moves backward relative to the coupling body in the proximal direction, and the inward deflection preventing portion is inside the retaining portion. coupler, characterized in der Rukoto which prevents reaching the deflection position which can not prevent towards. As the advance prevention structure, the coupling maintenance body has a leading end receiving part, and the coupling body has a base end receiving part,
In the state where the fitting insertion portion of the coupling maintenance body is fitted into the penetration portion of the coupling body and the inward deflection preventing portion is located at a position where the inward deflection of the retaining portion can be prevented, the proximal end receiving in the coupling body is performed. When the stop portion receives the receiving portion for the front end of the connection maintaining body, the connection maintaining body advances relative to the connection body toward the front end, and the inward bending prevention portion is moved inward of the retaining portion. The coupling tool according to claim 1, which prevents a position where bending cannot be prevented. A proximal-side outward projecting portion of the joined body is provided at the proximal end of the joined body, and a proximal-side recessed portion that opens to the proximal end side is formed in the proximal-end-side outward projecting portion, and the proximal side The recess constitutes a receiving portion for the proximal end,
At the base end of the joint maintaining body, a maintenance body base end overhanging portion that can be fitted into the base end side recess is formed in an outwardly projecting shape, and the maintenance body base end overhanging portion has a receiving portion facing the front end. The coupler according to claim 2, which is configured. In a state where the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body and the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented,
The proximal end of the base end side leg of the bonded body is exposed at the proximal end of the bonded body;
A state in which the base end receiving portion of the joint maintaining body is received by the tip end receiving portion of the joint maintaining body by bending the base end portion of the base end side leg portion of the joint maintaining body radially inward. The coupling tool according to any one of claims 1 to 3, wherein the coupling maintenance body can be moved backward relative to the coupling body relative to the coupling body. In a state where the fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body and the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented,
The coupling tool according to claim 4, wherein the base end portion of the base end side leg portion of the joint maintaining body does not protrude from the base end portion of the joint body to the base end side. The shaft-like portion of the combined body has a plurality of distal leg portions located on the outer peripheral side of the penetrating portion, which can be elastically bent radially inward, and the retaining portion is provided on the distal leg portion. The coupler according to any one of claims 1 to 5 . The shaft-like portion in the combined body is
An axial cylindrical portion whose inside constitutes the penetrating portion; and
The front end of the front end leg portion has a plurality of front end leg portions that are positioned on the outer peripheral side of the penetrating portion on the front end side in the axial direction of the cylindrical portion and can be elastically bent radially inward. The coupling tool according to claim 6, which has the retaining portion on the side. 1 or 2 or more of the crotch portions between the base portions of the adjacent front end side leg portions in the combined body is a receiving crotch portion that constitutes a front end receiving portion,
The fitting insertion part of the coupling maintenance body is fitted into the penetration part of the coupling body so that the inward bending prevention part is located at a position where the inward bending of the retaining part can be prevented, and the circumference of the receiving crotch part in the coupling body The receding prevention outward projecting portion of the proximal end leg portion of the coupling maintaining body is positioned in the directional position so that the receiving crotch portion of the coupling maintaining body is the proximal end of the receding preventing outward projecting portion of the coupling maintaining body. The coupling tool according to claim 6 or 7, wherein the orientation receiving part can be received.

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