JP2018119616A - Carabiner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel carabiner capable of maintaining a state in which a gate part is open.SOLUTION: A carabiner comprises a guide opening part 16, a frame part 11 comprising a first frame end part 13 and a second frame end part 14 defining it, and a gate part 12 supported rotatably at the first frame end part 13. The gate part 12 has a first coil spring 21 which energizes the guide opening part 16 to a closing position through rotation of the gate part 12, a plate-like spring 24 which has one end made to abut on the first coil spring 21 and the other end locked to a lock groove 26, and is bent, and a first stopper 25 which comprises an engagement part 42 to engage a locking corner part 34 provided at the first frame end part 13, and is supported rotatably at the gate part 12 nearby the first frame end part 13. The first stopper 25 restricts, as the engagement part 42 engages the locking corner part 34, the gate part 12 from returning to the position where the guide opening part 16 is closed against the first coil spring 21 and plate-like spring 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a carabiner capable of maintaining an open state of a gate portion.

  Carabiners (snap hooks or releasable clamps) are used for applications that releasably couple one object to another. Specifically, it is used as a decoration tool such as a mountain climbing aid or a key holder, a tool for hanging a rope or the like in a cargo handling operation, or a tool for hanging various tools.

  As a carabiner for mountain climbing aids, for example, it has a C-shaped body and a finger (gate part) that is rotatably supported at one end of the body via a spindle. Some have a second rear outlet opening that communicates the inside with the outside on the opposite side of the first opening (see Patent Document 1 below). According to this invention, when the protrusion faces the second rear outlet opening at the stroke end in the direction in which the finger closes, mud is discharged to the outside and the lock portion inside the recess is self-cleaned.

  And a swing body (gate portion) pivotally supported by a pin at one end of the body, and a swing body stopper provided at the other end of the body. A carabiner has also been proposed in which an opening for fitting with the stopper is provided at the free end opposite to the shaft support side of the moving body, and protrusions are provided on both sides of the free end (see Patent Document 2 below). According to the present invention, when the opening does not fit with the stopper when the swinging body is closed, the protrusion is restricted from rotating by swinging the protrusion into contact with the stopper.

  Since these carabiners are for climbing aids, malfunctions can cause serious and fatal accidents. Therefore, it is required as a basic performance of the carabiner to prevent the gate portion from opening due to malfunction or accidental occurrence. Further, in the case of a carabiner for a mountain climbing aid, it is desirable that the gate portion be closed as much as possible. For this reason, a coiled spring and a leaf spring are provided inside the gate portion, and the gate portion is instantaneously closed by the biasing thereof (for example, see Patent Document 3 below).

JP 7-47150 A JP2011-50689A Japanese Patent Laid-Open No. 2006-6342

  However, for example, when used in cargo handling work or when various tools are applied, the work efficiency may be improved if the gate portion is kept open.

  This invention is made | formed in view of the said situation, The objective is to provide the novel carabiner which can maintain the state which the gate part opened.

  In order to solve the above problems, a carabiner according to the present invention includes a guide opening, a frame portion having a first frame end and a second frame end defining the guide opening, and the frame portion. A gate portion rotatably supported by the end portion of the first frame, and the gate portion is accommodated in the gate portion and biased to a position where the guide opening is closed by the rotation of the gate portion. A first coil spring that has one end abutted on the first coil spring and the other end locked in a locking groove provided in the vicinity of the first frame end of the frame portion. A plate-like spring bent at least at one position, and an engaging portion that engages with a locking corner provided at the end of the first frame, and rotates in the vicinity of the end of the first frame in the gate portion. It is supported freely A first stopper, and the engaging portion of the first stopper engages with the locking corner portion of the first frame end to resist the biasing of the first coil spring and the plate spring. By doing so, the gate portion is restricted from rotating and returning to the position where the guide opening is closed.

  Another carabiner according to the present invention, in order to solve the above problems, a guide opening, a frame portion having a first frame end and a second frame end defining the guide opening, A gate portion rotatably supported by the first frame end portion of the frame portion, and the gate portion is accommodated in the gate portion, and the guide opening is closed by the rotation of the gate portion. A first coil spring biased to a position, one end abutted against the first coil spring, and the other end locked in a locking groove provided in the vicinity of the first frame end of the frame portion. A plate spring bent at at least one position at an arbitrary position, a second coil spring accommodated in the gate portion and biased to a position where the guide opening is opened by rotation of the gate portion, and one end of the spring Second carp Abutted against the spring, the other end is abutted against a locking corner provided at the end of the first frame, and is accommodated in the gate portion so as to be slidable in the longitudinal direction of the gate portion. A second stopper that is long, the other end of the second stopper is locked in a locking groove provided near the end of the first frame, and a second coil spring is connected to the guide opening. Urging to the opening position and resisting the urging of the first coil spring and the plate spring to restrict the gate portion from rotating and returning to the closing position of the guide opening. And

  In the above configuration, the engaging portion of the first stopper is preferably a notch portion having a substantially V-shaped cross section in a cross section parallel to the rotation surface of the first stopper.

  In the above configuration, the gate portion includes a first opening for receiving the first stopper on a surface opposite to an inner region formed by the frame portion and the gate portion. It is preferable that at least a part of the engaging portion is exposed from the first opening.

  In the above configuration, the gate portion includes a second opening on a surface opposite to an inner region formed by the frame portion and the gate portion, and a protrusion provided on the second stopper is provided. It is preferable to expose from the second opening.

The present invention has the following effects by the means described above.
That is, the carabiner of the present invention includes a frame portion having a guide opening defined at the first frame end portion and the second frame end portion, and a gate portion rotatably supported by the first frame end portion. At least.

  The gate portion is provided with a first coil spring and a plate spring, respectively. One end of the plate spring is in contact with the first coil spring, and the other end is at the end of the first frame. It is locked in a locking groove provided in the vicinity. When the gate portion rotates, the first coil spring receives a compression action from the plate spring due to the difference between the position where the gate portion is supported and the locking groove, thereby closing the guide opening. Energize the gate.

  On the other hand, the gate portion is also provided with a first stopper having an engaging portion that engages with a locking corner provided at the end of the first frame. The first stopper is rotatably supported in the vicinity of the first frame end. Therefore, when the gate portion is rotated so that the engaging portion engages with the locking corner portion of the first frame end, the first stopper acts to bias the first coil spring and the plate spring. Can withstand. As a result, the first stopper can restrict the gate portion from rotating to return to the position where the guide opening is closed.

  That is, according to the carabiner of the present invention, the gate portion returns to the position where the guide opening is closed against the bias of the first coil spring and the plate spring by rotating the first stopper in a timely manner. It is possible to regulate attempts for a long time. As a result, when the carabiner of the present invention is used for, for example, cargo handling work or suspension of various tools, the work efficiency can be improved.

  In addition, another carabiner according to the present invention includes a long second stopper that is slidably accommodated in the longitudinal direction of the gate portion in the gate portion, instead of the first stopper. Further, the other carabiner also includes a second coil spring that is accommodated in the gate portion and biased to a position where the guide opening is opened by the rotation of the gate portion. One end of the second stopper is in contact with the second coil spring, and the other end is locked to a locking corner provided at the end of the first frame.

  When the gate portion is in a position to close the guide opening, the second coil spring is subjected to a compression action from the second stopper. Then, when the gate portion is rotated to the position where the guide opening is opened, the second stopper slides due to the recovery restoring force of the second coil spring, and is engaged with the locking groove provided in the vicinity of the end portion of the first frame. Stop. On the other hand, when the gate portion rotates, the first coil spring receives a compression action from the plate spring due to the difference between the position where the gate portion is supported and the locking groove, thereby closing the guide opening. Energize the gate. However, when the other end of the second stopper is locked by the locking groove, the second stopper restricts the gate portion from rotating to return to the position where the guide opening is closed.

  That is, according to another carabiner of the present invention, the first coil spring and the second coil stopper are slid by sliding the second stopper and locking the other end in the locking groove provided in the vicinity of the first frame end. It is possible to prevent the gate portion from returning to the position where the guide opening is closed against the urging of the plate spring over a long period of time. As a result, when the other carabiner of the present invention is used for, for example, cargo handling work or suspension of various tools, the work efficiency can be improved.

In the carabiner which concerns on one Embodiment of this invention, it is a perspective view showing the state which the guide opening part closed. FIG. 5 is a perspective view showing a state in which a gate portion is opened and a guide opening is formed in the carabiner. It is the elements on larger scale showing the stopper in the gate part of the said carabiner. It is a partial expanded sectional view showing a mode that the gate part of the said carabiner rotates and a guide opening part opens and closes. FIG. 2A is a perspective view showing an outline of a plate spring in the carabiner, and FIG. 2B is an enlarged perspective view showing an outline of a stopper. In the carabiner which concerns on other embodiment of this invention, it is a perspective view showing the state which the guide opening part closed. FIG. 5 is a perspective view showing a state in which a gate portion is opened and a guide opening is formed in the carabiner. It is a partial expanded sectional view showing a mode that the gate part of the said carabiner rotates and a guide opening part opens and closes.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to FIGS. However, parts that are not necessary for the description are omitted, and some parts are illustrated by being enlarged or reduced for easy explanation.

  FIG. 1 is a perspective view showing a state in which the guide opening is closed in the carabiner according to the present embodiment. FIG. 2 is a perspective view showing a state in which the gate portion is opened and a guide opening is formed in the carabiner. FIG. 3 is a partially enlarged view showing a stopper in the gate portion of the carabiner. FIG. 4 is a partially enlarged cross-sectional view showing a state in which the gate portion of the carabiner rotates and the guide opening portion opens and closes. FIG. 5A is a perspective view showing an outline of a plate spring in the carabiner, and FIG. 5B is an enlarged perspective view showing an outline of a stopper.

  As shown in FIGS. 1 and 2, the carabiner 1 of this embodiment includes at least a frame portion 11 and a gate portion 12.

  The frame portion 11 has a substantially C-shape with a notch portion in a part thereof. The frame portion 11 and the gate portion 12 form an inner region 15. The cutout portion can form a guide opening 16, and the guide opening 16 is defined by the first frame end 13 and the second frame end 14. The first frame end portion 13 is provided with an insertion hole 19 (see FIG. 4), whereby the projection surface of the frame portion 11 is perpendicular to the surface that is substantially C-shaped, and the rivet pin 18 (for details) As will be described later). Furthermore, a locking corner 34 is provided at the tip of the first frame end 13 for enabling engagement with a stopper described later. Further, the second frame end portion 14 is formed with a locking portion 17. The locking part 17 is locked to the gate part 12.

  In addition to the substantially C-shape, the overall shape of the frame portion 11 may be other shapes such as an oval shape, a drop-shaped ellipse shape, or a square shape in consideration of the mechanical strength of the frame portion 11. Good. Moreover, the material of the frame part 11 is not specifically limited, For example, a metal or a synthetic resin can be illustrated. Furthermore, although the cross-sectional shape of the frame portion 11 of the present embodiment is substantially rectangular, the present invention is not limited to this shape, and for example, a circular shape, an elliptical shape, a hexagonal shape, an octagonal shape, etc. Also good.

  The gate unit 12 includes at least a first coil spring 21, a plate spring 24, and a first stopper 25. The gate portion 12 is rotatably supported by a rivet pin 18 that is inserted into and supported by an insertion hole 19 in the first frame end portion 13 of the frame portion 11. The entire shape of the gate portion 12 is a substantially cylindrical shape that is slightly curved. However, the present invention is not limited to this shape, and may be another overall shape such as a columnar shape.

  A locking recess 29 that is locked to the locking portion 17 is provided at the rocking tip of the gate portion 12 (see FIG. 2). The locking recess 29 accommodates at least a part of the locking portion 17 of the second frame end portion 14 when the gate portion 12 rotates in the direction indicated by the arrow in FIG. 2 and closes the guide opening 16. Abut. This restricts the gate portion 12 from further rotating. That is, the locking part 17 and the locking recess 29 restrict the gate part 12 to the closed position.

  As shown in FIG. 3, the gate portion 12 is provided with an accommodation space 20 for accommodating the first coil spring 21. The accommodating space 20 is substantially cylindrical and opens as an insertion port 22 for the first coil spring 21 at the rotation base end of the gate portion 12. Further, the rivet pin 18 crosses the insertion port 22. Further, an opening restricting portion 23 is provided inside the gate portion 12 on the side (direction indicated by the arrow in FIG. 4) in which the gate portion 12 rotates to a position where the guide opening 16 is opened. The opening restricting portion 23 comes into contact with the frame portion 11 when the gate portion 12 is rotated to a predetermined angle such as 90 degrees in order to open the guide opening portion 16. Thereby, it is controlled that the gate part 12 rotates more than the said angle.

  The first coil spring 21 is formed in a coil shape. The first coil spring 21 is biased to a position where the gate portion 12 is closed while being accommodated in the accommodating space 20 of the gate portion 12.

  The plate spring 24 is made of a metal piece having spring properties. Further, the plate spring 24 has a shape that is bent at one place at the center and is bent into a substantially square shape as a whole. However, the bending position is not particularly limited, and can be set as necessary. Also, a plurality of bending positions can be provided. The plate spring 24 may be made of a synthetic resin.

  One end of the plate spring 24 is in contact with the first coil spring 21. More specifically, as shown in FIG. 5, the spring insertion portion 31 of the plate spring 24 comes into contact with the first coil spring 21. The plate-like spring 24 is provided with a pair of spring seats 32 projecting left and right from the spring insertion portion 31, and the spring seats 32 come into contact with the first coil spring 21, thereby A shaped spring 24 allows a compressive force to be applied to the first coil spring 21. The gate portion 12 is biased to the position where the guide opening 16 is closed by the elastic restoring force of the first coil spring 21 and the plate spring 24. The other end of the plate spring 24 is locked in a locking groove 26 provided in the vicinity of the first frame end 13.

  In addition, the gate portion 12 is provided with a first opening 27 for accommodating the first stopper 25 on the surface opposite to the inner region 15. Further, the gate portion 12 is provided with a first stopper insertion hole (not shown) for inserting a stopper rivet pin 28 (details will be described later). Further, the first stopper insertion hole is provided so that the stopper rivet pin 28 is perpendicular to the surface on which the projection surface of the frame portion 11 is substantially C-shaped. Further, the stopper insertion hole is provided in the vicinity of the first frame end 13.

  The first stopper 25 includes a second stopper insertion hole 41 and a notch (engagement portion) 42.

  The second stopper insertion hole 41 enables the first stopper 25 to be rotatably supported via the stopper rivet pin 28 in the vicinity of the first frame end portion 13. The second stopper insertion hole 41 is provided at the corner of the first stopper 25 opposite to the surface on which the notch 42 is provided. A stopper rivet pin 28 is inserted into the second stopper insertion hole 41, and the stopper rivet pin 28 is also inserted into the first stopper insertion hole of the gate portion 12. Accordingly, the first stopper 25 is rotatably supported via the stopper rivet pin 28.

  The cutout portion 42 has a substantially V-shaped cross-sectional shape in a cross section parallel to the rotation surface of the first stopper 25 (see FIG. 5B). As a result, the notch 42 can engage with the locking corner 34 of the first frame end 13. The rotation surface of the first stopper 25 is a surface defined by a locus when the first stopper 25 is rotated, and is a surface perpendicular to the stopper rivet pin 28.

  The notch 42 does not engage with the locking corner 34 when the gate 12 closes the guide opening 16. On the other hand, when the gate portion 12 is rotated to be opened and the gate portion 12 is maintained in the open state, the notch portion 42 is engaged with the locking corner portion 34. Specifically, the first contact surface 43 a and the second contact surface 43 b that form a substantially V shape in the notch 42 abut on the locking corner 34. The first contact surface 43 a is a contact surface on the side exposed from the first opening 27, and the second contact surface 43 b is a contact surface on the inner side of the gate portion 12. Accordingly, it is possible to restrict the gate portion 12 from rotating and returning to the position where the guide opening 16 is closed against the urging of the first coil spring 21 and the plate spring 24. However, even if the gate portion 12 is in an open state, the cutout portion 42 does not engage with the locking corner portion 34 if the state is not maintained.

  In a state where the notch 42 is not engaged with the locking corner 34, a part of the notch 42 is exposed from the first opening 27 of the gate portion 12. Therefore, the user can easily engage with or release the locking corner 34 by pressing the exposed portion and rotating the first stopper 25, which is excellent in convenience. Yes.

Next, the operation mechanism of the carabiner 1 according to the present embodiment will be described with reference to FIG.
First, when the gate portion 12 is in a position to close the guide opening portion 16, the corner portion on the second contact surface 43 b side in the cutout portion 42 of the first stopper 25 is the corner portion for locking the first frame end portion 13. The first stopper 25 is restricted from rotating so as to be accommodated in the gate portion 12. Thereby, the notch 42 of the first stopper 25 is in a state of being exposed from the first opening 27 without engaging with the locking corner 34 of the first frame end 13.

  Further, the plate spring 24 exerts a compressive action on the first coil spring 21. As a result of the locking portion 17 at the second frame end portion 14 locking the gate portion 12, the gate portion 12 is inward. Further rotation in the direction opposite to the region 15 is restricted.

  Next, when the gate portion 12 is rotated to the position where the guide opening portion 16 is opened, the corner portion of the second contact surface 43b in the notch portion 42 contacts the engaging corner portion 34 of the first frame end portion 13. As a result, the first stopper 25 can be rotated so that the first stopper 25 is accommodated inside the gate portion 12. When the guide opening 16 is sufficiently opened, the first contact surface 43a and the second contact surface 43b of the notch 42 are brought into contact with the locking corner 34, and the first stopper 25 is obtained. Engages with the locking corner 34 of the first frame end 13.

  At this time, a pressing force is applied to the plate spring 24 so that the bent portion is linear, and a force for compressing the first coil spring 21 is applied to the first coil spring 21 accordingly. It is done. As a result, a biasing force is exerted to return the gate portion 12 to a position where the guide opening portion 16 is closed. However, as described above, since the first stopper 25 engages with the locking corner 34 of the first frame end 13, it is possible to resist the biasing of the first coil spring 21 and the plate spring 24. As a result, it is possible to restrict the gate portion 12 from rotating and returning to the position where the guide opening portion 16 is closed. Thereby, the state which the guide opening part 16 opened can be maintained.

  When returning the gate portion 12 to the position where the guide opening portion 16 is closed again, the gate portion 12 is once rotated in the direction of the inner region 15 (the direction indicated by the arrow in FIG. 4), and then the first stopper 25. Is rotated in the direction in which the first contact surface 43 a is exposed from the first opening 27. As a result, the contact of the first contact surface 43a and the second contact surface 43b of the notch 42 with the locking corner 34 is released. As a result, the gate portion 12 is rotated by the bias of the first coil spring 21 and the plate spring 24, and the gate portion 12 is returned to the position where the guide opening 16 is closed.

(Embodiment 2)
Another embodiment of the carabiner according to the present invention will be described below with reference to FIGS. In addition, about the component which has the function similar to the carabiner 1 of the said Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  FIG. 6 is a perspective view showing a state in which the guide opening is closed in another carabiner according to the present embodiment. FIG. 7 is a perspective view showing a state in which the gate portion is opened and a guide opening is formed in the other carabiner. FIG. 9 is a partially enlarged cross-sectional view showing a state where the gate portion of the other carabiner rotates and the guide opening portion opens and closes.

  As shown in FIGS. 6 to 8, the gate unit 12 includes at least a first coil spring 21, a plate spring 24, a second stopper 51, and a second coil spring 52.

  The gate portion 12 is provided with an accommodation space 53 for accommodating the second coil spring 52. The housing space 53 is substantially cylindrical and is provided on the opposite side of the housing space 20 that houses the first coil spring 21 from the inner region 15 formed by the frame portion and the gate portion.

  The second coil spring 52 is formed in a coil shape. The second coil spring 52 biases the second coil spring 52 to a position where the gate portion 12 is opened while being accommodated in the accommodating space 53 of the gate portion 12.

  Further, the gate portion 12 is provided with a second opening 54 for exposing a protruding portion 56 (details will be described later) of the second stopper 51 on the surface opposite to the inner region 15. ing. The second opening 54 is provided so as to extend substantially parallel to the longitudinal direction of the gate portion 12. Thereby, when the 2nd stopper 51 slides in the elongate direction of the gate part 12, the state which the protrusion part 56 exposed from the 2nd opening part 54 can be maintained.

  The second stopper 51 includes a long main body 55 and a protruding portion 56 that is provided integrally with the main body 55 and protrudes. One end of the main body 55 is in contact with the second coil spring 52. More specifically, as shown in FIG. 8, a part of the main body portion 55 comes into contact with the second coil spring 52. On the other hand, the other end of the main body 55 is in contact with the locking corner 34 of the first frame end 13 when the gate 12 is in a position to close the guide opening 16. At this time, the second coil spring 52 receives a compression action from the main body portion 55.

  The outer shape of the main body 55 is a quadrangular prism. However, the present invention is not limited to this aspect, and other shapes such as a cylindrical shape and a triangular prism shape can be adopted as long as the length is long.

  The protruding portion 56 is provided integrally with the main body portion 55, and at least a part of the protruding portion 56 is exposed from the second opening portion 54. By projecting the protruding portion 56 from the second opening 54, the second stopper 51 can be slid in the longitudinal direction of the gate portion 12 with a finger or the like.

Next, the operation mechanism of the carabiner 1 ′ according to the present embodiment will be described with reference to FIG.
First, when the gate portion 12 is in a position to close the guide opening portion 16, the other end of the second stopper 51 is in contact with the locking corner portion 34 of the first frame end portion 13, and the second coil spring 52 is The compression force is received from the second stopper 51, and it is in a contracted state.

  Further, the plate spring 24 exerts a compressive action on the first coil spring 21. As a result of the locking portion 17 locking the gate portion 12, the gate portion 12 is opposite to the inner region 15. Prevents further rotation in the direction.

  Next, when the gate portion 12 is rotated to a position where the guide opening portion 16 is opened, the portion where the other end of the second stopper 51 is in contact is engaged with the locking corner portion 34 of the first frame end portion 13. Move to the stop groove 26. When the guide opening 16 is sufficiently opened, the other end of the second stopper 51 (main body 55) is pushed by the elastic restoring force of the second coil spring 52 and is locked by the locking groove 26. To do.

  At this time, a pressing force is applied to the plate spring 24 so that the bent portion is linear, and a force for compressing the first coil spring 21 is applied to the first coil spring 21 accordingly. It is done. As a result, a biasing force is exerted to return the gate portion 12 to a position where the guide opening portion 16 is closed. However, as described above, the other end of the second stopper 51 is locked by the locking groove 26, and the second coil spring 52 also tries to rotate the gate portion 12 to the position where the guide opening 16 opens. Since the biasing is performed, the biasing of the first coil spring 21 and the plate spring 24 can be resisted. As a result, it is possible to restrict the gate portion 12 from returning to the position where the guide opening portion 16 is closed.

  When returning the gate portion 12 to the position where the guide opening portion 16 is closed again, the gate portion 12 is once rotated in the direction of the inner region 15 (the direction indicated by the arrow in FIG. 8), and then the second stopper 51. Is slid in the direction away from the first frame end 13 against the bias of the second coil spring 52. Thereby, the state where the other end of the second stopper 51 is locked by the locking groove 26 can be released. Furthermore, the gate opening 12 can be returned to the position where the guide opening 16 is closed by rotating the gate 12 by the urging of the first coil spring 21 and the plate spring 24.

1, 1 ′ Carabiner 11 Frame portion 12 Gate portion 13 First frame end portion 14 Second frame end portion 15 Inner region 16 Guide opening 17 Locking portion 18 Rivet pin 19 Insertion hole 20 Accommodating space 21 First coil spring 22 Insertion opening 23 Opening restricting portion 24 Plate spring 25 First stopper 26 Locking groove 27 First opening 28 Stopper rivet pin 29 Locking recess 31 Spring insertion portion 32 Spring seat portion 34 Locking corner 41 Stopper insertion Hole 42 Notch (engagement part)
43a First contact surface 43b Second contact surface 51 Second stopper 52 Second coil spring 53 Accommodating space 54 Second opening 55 Main body 56 Projection

Claims (5)

A frame portion having a guide opening and a first frame end and a second frame end defining the guide opening;
A gate part rotatably supported by the first frame end of the frame part,
The gate part is
A first coil spring housed in the gate portion and biased to a position where the guide opening is closed by rotation of the gate portion;
One end is in contact with the first coil spring, and the other end is locked in a locking groove provided in the vicinity of the first frame end of the frame portion, and is bent at at least one position at an arbitrary position. A leaf spring;
A first stopper that includes an engaging portion that engages with a locking corner provided at the first frame end, and is rotatably supported in the vicinity of the first frame end of the gate portion; Have
When the engaging portion of the first stopper engages with the locking corner portion of the first frame end portion and resists the bias of the first coil spring and the plate spring, the gate portion is A carabiner that rotates and restricts the guide opening from returning to the closed position. A frame portion having a guide opening and a first frame end and a second frame end defining the guide opening;
A gate part rotatably supported by the first frame end of the frame part,
The gate part is
A first coil spring housed in the gate portion and biased to a position where the guide opening is closed by rotation of the gate portion;
One end is in contact with the first coil spring, and the other end is locked in a locking groove provided in the vicinity of the first frame end of the frame portion, and is bent at at least one position at an arbitrary position. A leaf spring;
A second coil spring housed in the gate portion and biased to a position where the guide opening is opened by rotation of the gate portion;
One end is in contact with the second coil spring, and the other end is in contact with a locking corner provided at the end of the first frame, and slides in the longitudinal direction of the gate portion within the gate portion. A long second stopper accommodated in a possible manner,
The other end of the second stopper is locked in a locking groove provided in the vicinity of the first frame end, and the second coil spring is biased to a position where the guide opening is opened, A carabiner that restricts the gate portion from rotating and returning to a position where the guide opening is closed by resisting urging of one coil spring and a plate spring.   The carabiner according to claim 1, wherein the engaging portion of the first stopper is a cutout portion having a substantially V-shaped cross section in a cross section parallel to the rotation surface of the first stopper. The gate portion includes a first opening for receiving the first stopper on a surface opposite to an inner region formed by the frame portion and the gate portion,
The carabiner according to claim 1 or 3, wherein at least a part of the engaging portion is exposed from the first opening. The gate portion includes a second opening on a surface opposite to an inner region formed by the frame portion and the gate portion,
The carabiner according to claim 2, wherein a protruding portion provided on the second stopper is exposed from the second opening.

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