JP2016006342A - Carabiner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a lever rod to be fallen by about 90 degrees without causing the extremity end of a return link spring to cut an engaging groove and further enable an insertion space to be made wide.SOLUTION: A carabiner 11 of this invention comprises: a C-shaped body 15 having an opening part 27; a lever rod 13 rotatably supported at a released one end part of the body 15; a coil-shaped return spring 17 stored in the lever rod 13 and biasing the lever rod 13 to a closed position thereof; a return link spring 19 made of a chevron-shaped and curved metallic piece with one end being abutted against the return spring 17 and the other end being engaged with an engaging groove 23 formed near the released one end part of the body 15; a sliding contact end part 21 formed at the other end of the return link spring 19 and slidably contacting with the engaging groove 23; and a spring receiving surface 25 formed at the engaging groove 23 and formed by a curved concave surface to which the sliding contact end part 21 of the return link spring 19 is slidably contacted.

Description

  The present invention relates to a carabiner.

Carabiners for mountain climbing, cave exploration, rescue, etc. (see Patent Documents 1 and 2, etc.) and carabiners for decoration such as key holders are generally known.
As shown in FIG. 15A, this type of carabiner 501 has a substantially C-shaped body 503 and a movable lever rod 505 having a substantially circular cross section. The lever rod 505 is rotatably supported at one open end of the body 503 via the spindle 507. The lever rod 505 can be moved to a separate position (indicated by a one-dot chain line in FIG. 15A) away from the body 503 by being pushed into the body 503. The carabiner 501 is opened at the position of the lever rod 505, and a safety rope, a strap, a key ring or the like can be inserted. A return spring 509 is mounted inside the lever rod 505, and the return spring 509 biases the lever rod 505 to a closing position in the opposite direction (shown by a solid line in FIG. 15A). Then, the lever rod 505 engages with the other open end 515 of the body 503.

US2008 / 0006876A1 EP1433963B1

  However, in the conventional carabiner 501, the opening angle of the lever rod 505 does not increase to about 40 to 60 degrees. In the carabiner 501, a return link spring 511 made of a metal piece and bent into a letter shape is inserted into a return spring 509 that is a coil spring. As shown in FIG. 15 (b), the return link spring 511 has a V-shape formed such that the hooking portion 510 on one end is in contact with the return spring 509 and the other end is formed near the open end of the body 503. Locked in the locking groove 513.

  When the lever rod 505 is rotated around the spindle 507, the return spring 509 is compressed by the return link spring 511 due to the difference in position between the spindle 507 and the locking groove 513. At this time, the other end of the return link spring 511 acts to scrape the locking groove 513. This scraping is notable when the return link spring 511 is steel, and particularly when the body 503 is made of a resin material. The other end of the return link spring 511 curls the locking groove 513, and the locking groove. There is a possibility that the one end side convex portion 514 of 513 may be lost.

  In the structure of the conventional carabiner 501, as shown in FIG. 15 (c), when the opening angle of the lever rod 505 is set large to about 90 degrees, one end of the return link spring 511 is locked in a V-shape. There is a risk of tilting to an angle that exits from the groove 513 (arrow A in the figure) or damage due to excessive stress acting on the return link spring 511. For this reason, in the above-described conventional carabiner 501, the shape of the body 503 is configured to be vertically long along the open portion, and the lever rod 505 is set to be longer than the width length of the body 503, that is, the depth width. The opening angle was limited to be sufficiently smaller than 90 degrees.

  The present invention has been made in view of the above circumstances, and the object thereof is to prevent the tip of the return link spring from scraping or damaging the locking groove and to tilt the lever rod up to about 90 degrees. It is possible to provide a carabiner that can widen the insertion space and has no restriction on the shape of the carabiner.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The carabiner 11 according to claim 1 of the present invention includes a C-shaped body 15 having an opening 27,
A lever rod 13 rotatably supported at one open end of the body 15;
A coiled return spring 17 that is accommodated in the lever rod 13 and biases to a position to close the lever rod 13;
A return link spring comprising a metal piece bent into a U-shape, having one end abutting against the return spring 17 and the other end locked in a locking groove 23 formed in the vicinity of the open end of the body 15. 19 and
A sliding contact end portion 21 formed on the other end of the return link spring 19 and slidingly contacting the locking groove 23;
A spring receiving surface 25 formed of a curved concave surface formed in the locking groove 23 and in sliding contact with the sliding contact end portion 21 of the return link spring 19;
It is characterized by comprising.

  In this carabiner 11, the return link spring 19 accommodated in the lever rod 13 is rotated by the lever rod 13 in the opening direction, and the spring receiving surface 25 in which the sliding contact end portion 21 at the other end is a curved concave surface. Slide. The return link spring 19 has an obtuse angle on the outer side of the groove formed by the sliding contact end portion 21 and the spring receiving surface 25, and the return link spring 19 is less likely to fall off the locking groove 23. Accordingly, the lever portion can be opened after being rotated up to about 90 degrees. Further, the sliding contact end portion 21 of the return link spring 19 comes into sliding contact with the curved surface of the spring receiving surface 25 of the locking groove 23, and the scraping of the locking groove 23 by the return link spring 19 is suppressed.

The carabiner 11 according to claim 2 of the present invention is the carabiner 11 according to claim 1,
A cross-sectional shape of the sliding contact end portion 21 is a curved convex surface.

  In this carabiner 11, the sliding contact end portion 21 of the return link spring 19 and the spring receiving surface 25 of the locking groove 23 are in sliding contact with each other between the curved surfaces, and the locking groove 23 is scraped by the return link spring 19. It will be further suppressed.

The carabiner 11 according to claim 3 of the present invention is the carabiner 11 according to claim 1 or 2,
A protrusion 49 that restricts the detachment of the sliding contact end 21 of the return link spring 19 protrudes from a curved terminal portion of the spring receiving surface 25 in the closed state of the lever rod 13.

  In the carabiner 11, when the lever rod 13 is closed, the sliding contact end portion 21 of the return link spring 19 slidably contacting the spring receiving surface 25 approaches one curved terminal portion (locking groove end) of the spring receiving surface 25. To do. At that time, the sliding contact end portion 21 abuts on the protrusion 49 provided at the curved terminal portion, so that the detachment of the sliding contact end portion 21 from the locking groove end is restricted and does not fall off.

The carabiner 11 according to claim 4 of the present invention is the carabiner 11 according to any one of claims 1, 2 and 3,
The rotation angle of the lever rod 13 from the closed position of the lever rod 13 to the open end position of the lever rod 13 is set to 90 degrees.

  In the carabiner 11, the lever rod 13 is rotated at a rotation angle of 90 degrees and opened, so that the lever rod 13 is disposed perpendicular to the opening surface of the opening portion 27 in the opening portion 27 of the body 15. . Thereby, all the separation widths of the opening 27 can be used as the passage width of the insertion member.

The carabiner 55 according to claim 5 of the present invention is the carabiner 11 according to any one of claims 1, 2, 3, and 4,
The locking groove 59 has a straight surface 61 that follows the opening 27 of the body 51 continuously to the curvature of the spring receiving surface 25,
The straight surface 61 when the return link spring 19 is bent so as to form a U-shape between the spring insertion piece 43 that contacts the return link spring 19 and the spring insertion piece 43, and comes into contact with the straight surface 61. A groove contact piece 45 having an acute angle θ between the outer sides of the groove, and
It is characterized by comprising.

  In the carabiner 11, when the rotation angle of the lever rod 57 becomes about 90 degrees and the sliding contact end portion 21 of the return link spring 19 reaches the straight surface 61, the sliding contact end portion 21 and the straight surface 61 form. The included angle θ outside the groove is an acute angle. Thereby, the sliding contact end portion 21 is prevented from dropping from the locking groove 59.

  According to the carabiner of claim 1 according to the present invention, the tip of the return link spring does not scrape the locking groove or is lost, and the lever rod can be tilted to about 90 degrees, The insertion space can be widened. In addition, since the lever 杆 can be opened widely, the shape of the carabiner can be increased without restricting the shape of the body and the length of the lever 、, and a carabiner that can give more design and the like can be obtained. .

  According to the carabiner described in claim 2 of the present invention, the sliding contact end portion of the return link spring and the spring receiving surface of the locking groove are in sliding contact with each other between the curved surfaces, and the engagement by the return link spring. The cut of the stop groove is further suppressed.

  According to the carabiner described in claim 3 of the present invention, it is possible to prevent the return link spring from coming out of the locking groove when the lever rod is closed.

  According to the carabiner according to the fourth aspect of the present invention, the entire separation width of the opening can be set as the passage width of the member inserted into the body.

  According to the carabiner described in claim 5 of the present invention, it is possible to prevent the return link spring from slipping out from the locking groove when the lever rod is tilted to about 90 degrees.

It is the front view which notched a part of carabiner which concerns on embodiment of this invention. (A) is a disassembled perspective view of the carabiner shown in FIG. 1, (b) is an enlarged side view of the main part of (a). It is the front view which notched a part of the state in which the lever hook of the carabiner shown in FIG. 1 was opened. (A) is an operation explanatory view showing the side of the main part when the lever 杆 is closed, (b) is an operation explanatory view showing the side of the main part while the lever 杆 is rotating, (c) is a main part in a state where the lever 杆 is opened. It is operation | movement explanatory drawing showing a side surface. It is the front view which notched a part of carabiner which concerns on the modification with which the stopper surface was formed in the body. FIG. 6 is a front view showing a state in which a lever hook of the carabiner shown in FIG. 5 is opened. (A) is the operation explanatory view showing the principal side of the U-shaped spring receiving surface when the lever 面 is closed, (b) is the operation explanatory view showing the principal side of the lever 杆 during rotation, (c) These are operation | movement explanatory drawings showing the principal part side surface of the state in which the lever rod was opened. It is a perspective view of the carabiner which concerns on the modification by which the cap-shaped seat part was provided in the body. It is the front view which represented the structure of the cap-shaped seat part of the carabiner shown in FIG. 8 with the broken line. It is a front view at the time of lever lever closing of the carabiner shown in FIG. FIG. 9 is a front view showing a state in which the lever の of the carabiner shown in FIG. 8 is opened. It is a perspective view of the folding umbrella to which the carabiner shown in FIG. 8 was attached. It is a front view of the carabiner which concerns on the modification with which the fastening belt was provided in the cap-shaped seat part. It is a top view of the fastening belt shown in FIG. (A) is a front view of a conventional carabiner, (b) is an enlarged cross-sectional view showing a contact state between a return link spring and a locking groove shown in (a), and (c) is a lever rod shown in (a). It is a principal part expanded sectional view when is opened at about 90 degree | times.

Embodiments according to the present invention will be described below with reference to the drawings.
1 is a front view in which a part of a carabiner 11 according to an embodiment of the present invention is cut out, FIG. 2A is an exploded perspective view of the carabiner 11 shown in FIG. 1, and FIG. 1B is an enlarged view of a main part of FIG. FIG. 3 is a side view of the carabiner 11 shown in FIG.
The carabiner 11 according to the present embodiment includes a body 15, a lever rod 13, a return spring 17, a return link spring 19, a sliding contact end portion 21, a locking groove 23, and a spring receiving surface 25. .

  The body 15 is formed, for example, by bending a rod having a circular cross section into an oval ring. The cross-sectional shape may be a circle, a polygon such as a quadrangle, a hexagon, or an octagon. In addition to the oval shape, the annular shape may be other shapes such as a drop-type ellipse shape or a square shape. A part of the body 15 is divided in the circumferential direction to form an opening 27. That is, the body 15 allows other members such as a rope and a key ring to be taken in and out through the opening 27 in the radial direction. A synthetic resin is used as the material of the body 15, but a metal such as aluminum may be used.

  In the body 15, a pin insertion hole 29 perpendicular to the C-shaped projection surface (the paper surface shown in FIG. 1) is formed in one open end portion sandwiching the opening 27. A pin 31 is inserted into and supported by the pin insertion hole 29. The pin 31 supports the lever rod 13 rotatably. In addition, a locking groove 23 is formed at the open end. A locking claw 33 is formed at the other open end of the body 15. The locking claw 33 is locked to the lever rod 13.

  The lever rod 13 is rotatably supported on the open one end portion of the body 15 by the pin 31 described above. In the present embodiment, the lever rod 13 is formed in a substantially prismatic shape. A locking recess 35 that locks to the locking claw 33 is formed at the rocking tip of the lever rod 13. The locking recess 35 is moved in the closing direction of the lever rod 13 and comes into contact with the locking claw 33 so as to restrict further rotation of the lever rod 13. That is, the locking recess 35 and the locking claw 33 restrict the lever rod 13 to the closed position.

  A spring housing space 37 shown in FIG. 1 is formed in the lever rod 13 in a substantially cylindrical shape. The spring accommodating space 37 is opened as a spring insertion port 39 at the rocking base end of the lever rod 13. The pin 31 crosses the spring insertion port 39. An opening restricting portion 41 shown in FIG. 3 is formed in the spring insertion port 39. When the lever rod 13 is rotated up to 90 degrees, the opening restricting portion 41 comes into contact with the body 15 and restricts further rotation of the lever rod 13. Further, the locking groove 23 is disposed opposite to the spring insertion port 39.

  The return spring 17 is formed in a coil shape. The return spring 17 is housed in the spring housing space 37 of the lever rod 13 and urges the lever rod 13 to close.

  The return link spring 19 is made of a metal piece having a spring property that is bent in a substantially heft shape with a halfway bent. One end of the return link spring 19 is in contact with the return spring 17, and the other end is locked in a locking groove 23 formed in the vicinity of one open end of the body 15. In the present embodiment, as shown in FIG. 2, the return link spring 19 is formed with a narrow spring insertion piece 43 at one end.

  The return link spring 19 has a groove contact piece 45 on the opposite side of the spring insertion piece 43. A spring seat 47 is formed between the spring insertion piece 43 and the groove contact piece 45. In the return link spring 19, the spring seat 47 is brought into contact with the return spring 17 by inserting the spring insertion piece 43 into the return spring 17. In the return link spring 19 in which the spring seat 47 is in contact with the return spring 17, the groove contact piece 45 is in contact with the locking groove 23. In this state, the return spring 17 is compressed. In addition, the return link spring 19 is also bent in a direction in which the hemiform becomes a straight line. The lever rod 13 is closed to the opening 27 by the elastic restoring force of the return spring 17 and the return link spring 19.

  The sliding contact end portion 21 is formed at the other end of the return link spring 19. The slidable contact end portion 21 has a curved convex surface in the cross section slidably contacting the locking groove 23. The curved convex surface is a smooth circular shape formed by chamfering the front and back corners of the cross section of the front end of the plate piece that is the sliding contact end portion 21 and rounding the plate thickness to a diameter, preferably by polishing or the like. It is a curved surface. In addition to the curved convex surface, the shape of the sliding contact end portion 21 is a shape in which the corners of the front and back surfaces are chamfered round in the cross section of the front end of the plate piece, a hemispherical three-dimensional shape, and only the tip portion is thick You may comprise as other shapes, such as a swelled shape.

  The spring receiving surface 25 is formed in the locking groove 23. The sliding contact end portion 21 of the return link spring 19 is in sliding contact with the spring receiving surface 25. The spring receiving surface 25 is formed of a concave curved surface and has a larger curvature than the plate thickness of the sliding contact end portion 21, for example, a substantially semicircular shape having a diameter about twice the plate thickness. That is, a corner such as a V-groove is not formed.

  In the carabiner 11, the protrusion 49 that restricts the detachment of the sliding contact end portion 21 of the return link spring 19 protrudes in the direction of narrowing the spring receiving surface 25 at the curved end portion of the spring receiving surface 25 in the closed state of the lever rod 13. Established.

  In the carabiner 11, as shown in FIG. 3, the rotation angle of the lever rod 13 from the closed position of the lever rod 13 to the open end position of the lever rod 13 is set to 90 degrees.

Next, the operation of the carabiner 11 having the above configuration will be described.
4 (a) is an operation explanatory view showing the side of the main part when the lever 杆 is closed, (b) is an operation explanatory view showing the side of the main part while the lever 杆 is rotating, and (c) is a state where the lever 杆 13 is opened. It is operation | movement explanatory drawing showing the principal part side surface.
In the carabiner 11 according to the present embodiment, the sliding contact end portion 21 of the return link spring 19 is formed with a curved convex surface, so-called R surface, and the spring receiving surface 25 of the locking groove 23 with which the sliding contact end portion 21 is in sliding contact is curved. It is formed with a concave surface. As the lever rod 13 rotates in the opening direction, the return link spring 19 accommodated in the lever rod 13 slides on the spring receiving surface 25 whose slidable contact end portion 21 is a curved concave surface.

  In the carabiner 11, the sliding contact end portion 21 of the return link spring 19 is slidable on the spring receiving surface 25 of the locking groove 23, and the sliding contact end portion 21 is located inside the locking groove 23. The return link spring 19 is less likely to be detached from the locking groove 23. Thereby, the lever rod 13 can be opened after being rotated up to about 90 degrees. Further, since the sliding contact end portion 21 of the return link spring 19 and the spring receiving surface 25 of the locking groove 23 are in sliding contact with each other as shown in FIG. 4, the body 15 is made of resin. Also, the scraping of the locking groove 23 by the metal return link spring 19 is suppressed.

  In the return link spring 19, the sliding contact end portion 21 slides into the locking groove 23 with a curved convex surface, so that excessive stress is not applied to the return link spring itself and the return link spring 19 is not broken. Further, the lever rod 13 is smoothly opened and closed because the sliding contact end portion 21 of the return link spring 19 is formed of a curved convex surface and smoothly slides on the spring receiving surface 25 formed of a curved concave portion.

  Further, in the carabiner 11, when the lever rod 13 is closed, the sliding contact end portion 21 of the return link spring 19 that is in sliding contact with the spring receiving surface 25 has one curve of the spring receiving surface 25 as shown in FIG. It approaches the end of the locking groove which is the end portion. At that time, the sliding contact end portion 21 abuts on the protrusion 49 provided at the curved terminal portion, so that the sliding contact end portion 21 is restricted from being detached from the locking groove end. As a result, it is possible to reliably prevent the return link spring 19 from coming out of the locking groove 23 and falling off when the lever rod is closed.

  Further, in this carabiner 11, the lever rod 13 is rotated at a rotation angle of 90 degrees and opened, so that the lever rod 13 in the opening portion 27 of the body 15 has an opening portion 27 as shown in FIG. It is arrange | positioned at right angles to the opening surface. As a result, the opening 27 can use the entire separation width as the passage width of the insertion member. As a result, the entire separation width of the opening 27 can be set as the passage width of the member inserted into the body.

  In the carabiner 11, when the rotation angle of the lever rod 13 reaches about 90 degrees, the sliding contact end portion 21 of the return link spring 19 is connected to the other end of the spring receiving surface 25 as shown in FIG. When the straight surface 26 formed at the end of the curve is reached, the sandwiching angle θ outside the groove formed by the sliding contact end portion 21 and the straight surface 26 becomes an angle smaller than a right angle, that is, an acute angle. As a result, the slidable contact end 21 has the urging force of the return ring spring 19 and the return spring 17 in the direction of the spring receiving surface 25, and is prevented from falling off the locking groove 23.

Next, a modification of the carabiner according to the present invention will be described.
FIG. 5 is a front view in which a part of a carabiner 55 according to a modification in which a stopper surface 53 is formed on the body 51 is cut out, and FIG. 6 is a front view in a state in which a lever rod 57 of the carabiner 55 shown in FIG. It is. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 1-4, and the overlapping description is abbreviate | omitted.
In the carabiner 55 according to this modification, a flat stopper surface 53 is formed on the inner peripheral surface continuous to the open end of the body 51. The stopper surface 53 abuts on the lever rod 57 when the lever rod 57 is rotated at a rotation angle of 90 degrees, and restricts further rotation of the lever rod 57. That is, the lever rod 57 does not need to be formed with the opening restricting portion 41 (see FIG. 3) of the lever rod 13 described above.

FIG. 7A is an operation explanatory view showing the main part side surface of the spring receiving surface 25 formed in a U-shape when the lever 杆 is closed, and FIG. 7B is an operation explanatory view showing the main part side surface during the lever 、 rotation, (C) is operation | movement explanatory drawing showing the principal part side surface of the state by which the lever rod 57 was opened.
In the carabiner 55, the locking groove 59 has a straight surface 61 that continues to the curve of the spring receiving surface 25 and extends along the opening 27 of the body 15. The return link spring 19 is bent so as to be formed in a U-shape by a spring insertion piece 43 that contacts the return spring 17 and a groove contact piece 45. As shown in FIG. 7C, the groove contact piece 45 has an acute angle θ between the outer sides of the groove formed with the straight surface 61 when contacting the straight surface 61.

  In the carabiner 55, the spring receiving surface 25 of the locking groove 59 is formed in a U shape having a straight surface 61 continuous with the curved concave surface. The sliding contact end portion 21 of the return link spring 19 is moved while sliding in the direction from the curved concave surface toward the straight surface 61 as the lever rod 57 rotates in the opening direction. When the rotation angle of the lever rod 57 reaches about 90 degrees and the sliding contact end portion 21 of the return link spring 19 reaches the straight surface 61, the sliding contact end portion 21 and the straight surface as shown in FIG. The slidable contact end portion 21 is prevented from being detached from the locking groove 59 because the included angle θ outside the groove formed with 61 is an acute angle. As a result, it is possible to prevent the return link spring 19 from slipping out from the locking groove 59 when the lever rod 57 is tilted to about 90 degrees.

8 is a perspective view of a carabiner 67 according to a modification in which a cap-shaped seat 65 is provided on the body 63, and FIG. 9 is a front view showing the internal structure of the cap-shaped seat 65 of the carabiner 67 shown in FIG. FIG. 10 is a front view of the carabiner 67 shown in FIG. 8 when the lever rod is closed. FIG. 11 is a front view of the carabiner 67 shown in FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 1-7, and the overlapping description is abbreviate | omitted.
In the carabiner 67 according to this modification, a cap-shaped seat portion 65 is formed at one open end side of the opening portion 27 in which the pin insertion hole 29 which is the lower portion of the body 63 in the figure is formed. The cap-shaped seat portion 65 is formed in a bottomed cylindrical shape, and the bottom portion becomes a top plate portion 69 by being turned upside down, and an inverted J-shaped body 63 is integrally formed on the top plate portion 69. . Further, the top plate portion 69 is provided with a locking groove 23 and a pin insertion hole 29, and a substantially central portion of the top plate portion 69 is a stopper surface 53.

  As shown in FIG. 9, a female screw 75 is formed on the ceiling surface 73 of the recess 71 which is the inner side of the cap-shaped seat portion 65. Also in the carabiner 67, when the closed lever rod 57 shown in FIG. 10 is released, the lever rod 57 contacts the stopper surface 53 of the top plate portion 69 as shown in FIG. As a result, the lever rod 57 is opened at a rotation angle of approximately 90 degrees.

  In the carabiner 67, a male screw (not shown) of the handle portion of the folding umbrella 77 shown in FIG. 12 is screwed into the female screw 75 of the cap-shaped seat portion 65. That is, the carabiner 67 becomes a handle of the folding umbrella 77 and is attached integrally. In this way, the folding umbrella 77 having the carabiner 67 as a handle is hooked on the rod body or the annular body by opening the lever rod 57. Thereafter, the folding umbrella 77 can prevent the rod and the annular body from falling off when the lever rod 57 is closed.

FIG. 13 is a front view of a carabiner 81 according to a modification in which a fastening belt 79 is provided on the cap-shaped seat portion 65, and FIG. 14 is a plan view of the fastening belt 79 shown in FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 1-12, and the overlapping description is abbreviate | omitted.
In the carabiner 81 according to this modification, a fastening belt 79 is integrally provided on the cap-shaped seat portion 65. The fastening belt 79 has a C-shaped belt base 83 formed integrally with the cap-shaped seat 65. The belt base 83 is fitted into the neck portion 87 of the plastic bottle 85. At both ends of the belt base 83, one belt mounting projection 89 is provided to protrude. A belt 91 having flexibility is fixed to one belt mounting protrusion 89. The belt 91 is provided with a protrusion engaging hole (not shown). The belt 91 is wound around the neck 87 of the plastic bottle 85, and the protrusion engagement hole is fitted into the other belt attachment protrusion 89. In addition, an inner peripheral ridge 93 may be provided on the inner surface of the belt base 83 or the belt 91 in order to improve the close contact with the neck portion 87.

  According to the carabiner 81, the plastic bottle 85 can be wound around and attached to the neck 87 of the plastic bottle 85, and the transportability of the plastic bottle 85 can be improved. Moreover, temporary installation property, ie, installation property when there is no flat installation surface, can be improved.

  Therefore, according to the carabiner according to the present embodiment, the tip of the return link spring 19 does not scrape or cause the locking groove 23 to be cut, and the lever rod 13 (57) can be tilted to about 90 degrees. And the insertion space can be widened.

DESCRIPTION OF SYMBOLS 11 ... Carabiner 13 ... Lever rod 15 ... Body 17 ... Return spring 19 ... Return link spring 21 ... Sliding contact end 23 ... Locking groove 25 ... Spring receiving surface 27 ... Opening 43 ... Spring insertion piece 45 ... Groove contact piece 49 ... Protrusions 61 ... Straight surface θ ... Angle

Claims (5)

A C-shaped body having an opening;
A lever rod rotatably supported at one open end of the body;
A coiled return spring that is accommodated in the lever rod and biases to a position to close the lever rod;
A return link spring consisting of a metal piece bent into a U-shape, with one end abutting on the return spring and the other end locked in a locking groove formed near the open end of the body;
A sliding contact end formed on the other end of the return link spring and slidingly contacting the locking groove;
A spring receiving surface formed of a curved concave surface formed in the locking groove and in sliding contact with the sliding contact end portion of the return link spring;
Carabiner characterized by comprising. The carabiner according to claim 1,
A carabiner, wherein a cross-sectional shape of the sliding contact end portion is a curved convex surface. The carabiner according to claim 1 or 2,
A carabiner characterized in that a protrusion for restricting detachment of the sliding contact end portion of the return link spring is provided at a curved end portion of the spring receiving surface in a closed state of the lever rod. A carabiner according to any one of claims 1, 2 and 3,
The carabiner characterized in that the rotation angle of the lever rod from the closed position of the lever rod to the open end position of the lever rod is set to 90 degrees. The carabiner according to any one of claims 1, 2, 3, and 4,
The locking groove has a straight surface along the opening of the body continuously with the curvature of the spring receiving surface;
The return link spring is bent so as to form a hem shape between a spring insertion piece that abuts on the return link spring and the spring insertion piece, and sandwiches outside the groove formed with the straight surface when contacting the straight surface. A groove contact piece having an acute angle, and
Carabiner characterized by comprising.

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