Methods for disconnecting and reconnecting connecting devices and their protruding or recessed parts.

Abstract

A connecting device capable of emergency disconnection and a method for disconnecting the connecting device's concave and convex components are provided. The connecting device includes concave and convex components. The concave component has a recessed portion forming a concave channel and an opening. The convex component has a protrusion and a main body portion. The protrusion includes a leaf spring that can elastically flex and deform through an external operation performed by a rope. By engaging a locking protrusion with a protrusion receiving portion through the elastic deformation of the leaf spring, the displacement of the protrusion along the concave channel is restricted within the concave channel, and the locking protrusion can be released from the protrusion receiving portion according to the flexural deformation of the leaf spring caused by the external operation performed by the rope. The concave portion has at least one operating window that allows an external force to be applied directly or indirectly to the leaf spring to release the locking protrusion from the protrusion receiving portion while the displacement of the protrusion along the concave channel is restricted within the concave channel by the engagement of the locking protrusion with the protrusion receiving portion.

Description

Technical Field

[0001] This disclosure relates to a connecting device and a method for disconnecting the connection of a connecting device and its protruding or recessed parts. Background Technology

[0002] Universal buckles used for clothing, bags, shoes, etc., can usually be easily unlocked by gripping between the thumb and forefinger. However, unlike such common buckles, there is also a need for connecting devices that are designed to be difficult to disengage after the interlocking parts have been temporarily connected.

[0003] For example, U.S. Patent No. 11,064,771 discloses a connecting device designed to force a user to release the lock by pulling a cord to manipulate a leaf spring in order to disengage the connection between the protruding and recessed parts (see that document). Figure 9 A, Figure 16 This is an operation. For reference, in this document... Figure 9 Figure A illustrates the state in which the protrusion inside the channel engages with the opening of the leaf spring and is locked in place. Summary of the Invention

[0004] The problem that the invention aims to solve

[0005] In the connecting device described in U.S. Patent No. 11,064,771, if the rope cannot be pulled due to certain reasons (e.g., rope cutting or loss), it may be impossible to disengage the connecting device. Connecting devices are typically manufactured with high rigidity, making disengagement extremely difficult under such conditions. Referring to this non-limiting example, the inventors of this application have discovered a new problem: enabling emergency disengagement of connecting devices designed to be unlocked only by limited methods.

[0006] [Methods used to solve problems]

[0007] One connecting device disclosed herein comprises: a recessed member having recessed channels with channel ends on both sides in the width direction of the recessed member and an opening that opens forward relative to the recessed member; and a convex member comprising a convex portion constrained by the recessed channel of the recessed member and a main body portion connected to the convex portion rearward relative to the convex member, the convex portion including a leaf spring capable of elastically flexing and deforming by an external operation performed by a rope. The engagement of a locking protrusion, achieved by the elastic deformation of the leaf spring, with a protrusion receiving portion restricts the displacement of the convex portion along the recessed channel within the recessed channel, and the locking protrusion can be released from the protrusion receiving portion according to the flexural deformation of the leaf spring caused by the external operation performed by the rope. The recessed member has at least one operating window that allows for direct or indirect application of an external force to the leaf spring to release the locking protrusion from the protrusion receiving portion, while the displacement of the convex portion along the recessed channel is restricted by the engagement of the locking protrusion with the protrusion receiving portion.

[0008] In some embodiments, the leaf spring has an outer surface and an inner surface that determine the thickness of the leaf spring. Engaging protrusions are provided on the outer surface of the leaf spring, and protrusion receiving portions are formed in the recesses. The number of engaging protrusions can be one or more. The number of protrusion receiving portions can be one or more. The engaging protrusions can be located at the center in the width direction of the convex member. The protrusion receiving portions can be located at the center in the width direction of the concave member.

[0009] In some embodiments, the protruding receiving portion and the operating window are disposed at the same location in the width direction of the recess, forming an opening that serves as both a protruding receiving portion and an operating window. The opening is formed extending through the recess from the outer surface of the recess to the recessed channel. In the engaged state of the engaging protrusion and the protruding receiving portion, an external force can be indirectly applied to the leaf spring via the engaging protrusion disposed in the opening. The opening may be located at the center in the width direction of the recess.

[0010] In some embodiments, the opening is defined by left and right walls that are spaced apart in the width direction of the recess, with the distance between the left and right walls being less than 1 cm.

[0011] In some embodiments, the recess includes a lower plate, an upper plate, and a connecting plate connecting the lower plate and the upper plate. The opening can pass through the lower plate, the upper plate, and the connecting plate respectively (i.e., all of them). The recessed channel is open in at least three directions—below, above, and rear—by means of the opening.

[0012] In some embodiments, the engaging protrusion includes a lower protrusion and an upper protrusion disposed opposite each other in a vertically spaced manner. Both the lower and upper protrusions are configured within the opening without protruding from it.

[0013] In some embodiments, the connecting plate is provided with at least one guide protrusion that guides the protrusion to move along the recessed channel. A lower groove is formed between the guide protrusion and the lower plate for the lower protrusion to be inserted, and an upper groove is formed between the guide protrusion and the upper plate for the upper protrusion to be inserted.

[0014] In some embodiments, the connecting plate has at least one inclined surface, and when the protrusion is inserted into the concave channel, the engaging protrusion slides on the at least one inclined surface, causing the leaf spring to flex.

[0015] In some embodiments, the leaf spring has a rope connection portion with a rope attached. The rope connection portion includes an internal passage for the rope to pass through, a post for the rope to be wound around, and a rope retainer portion for pressing and holding the rope. The internal passage extends to the outer surface of the leaf spring and forms an opening on the outer surface, with the rope retainer portion and the post arranged sequentially from the opening of the leaf spring.

[0016] In some embodiments, the recess does not have a protrusion that extends into an opening formed on the outer surface of the leaf spring using an internal passage.

[0017] In some embodiments, the body portion has a rope channel that allows a rope to extend rearward from the rope joint relative to the convex member. The body portion includes at least one carrying passage spatially communicating with the rope channel and a rear bar defining the carrying passage from rearward relative to the convex member. The front surface of the rear bar includes an inclined surface that slopes approximately the entire thickness of the rear bar.

[0018] In some embodiments, the lower plate and the upper plate have a lower limiting portion and an upper limiting portion, respectively, thereby preventing the protrusion from dislodging from the recessed channel through the opening.

[0019] Another technical solution of the present invention relates to a method for disengaging the connection between a protruding member and a concave member in any of the aforementioned connecting devices. The method includes: inserting a rod-shaped member into an operating window, thereby applying an external force directly or indirectly to a leaf spring to release the engaged protrusion from the protrusion receiving portion; and a step of pulling the protrusion out of the concave channel by means of horizontal pulling.

[0020] The leaf spring has an outer surface and an inner surface that determine its thickness. A locking protrusion is provided on the outer surface of the leaf spring, and a protrusion receiving portion is formed in the recess. The protrusion receiving portion and the operating window are located at the same position in the width direction of the recess, forming an opening that serves as both the protrusion receiving portion and the operating window. The opening extends through the recess from its outer surface to the recessed channel. When the locking protrusion and the protrusion receiving portion are engaged, an external force can be indirectly applied to the leaf spring via the locking protrusion located in the opening.

[0021] [Invention Effects]

[0022] According to a technical solution disclosed herein, a connection device capable of emergency disconnection can be provided. Attached Figure Description

[0023] Figure 1 This is a perspective view of a connecting device according to one aspect of the present disclosure. It is drawn with accuracy based on the product design drawings.

[0024] Figure 2 It is an exploded perspective view of the connecting device. It is drawn with accuracy based on the product's design drawings.

[0025] Figure 3 It is an exploded 3D diagram of the connecting device, from the perspective of... Figure 2 Diagrams showing different viewpoints. Drawn with accuracy based on the product's design drawings.

[0026] Figure 4 This is an exploded perspective view of the connecting device, showing a state of connection between the convex and concave parts. It is drawn with accuracy based on the product design drawings.

[0027] Figure 5 This is a top view of the connecting device when the convex and concave parts are separated. It is drawn with accuracy based on the product's design drawings.

[0028] Figure 6 This is a side view of the connecting device when the convex and concave parts are separated. It is drawn with accuracy based on the product's design drawings.

[0029] Figure 7 This is a side view of the connecting device when the convex and concave parts are connected. It is drawn with accuracy based on the product's design drawings.

[0030] Figure 8 It is along the convex part Figure 5 A vertical sectional view of a single-dash line X8-X8. Drawn with accuracy based on the product design drawings.

[0031] Figure 9 It is along the convex part Figure 6 A horizontal sectional view with a single-dash line X9-X9. Drawn with accuracy based on the product's design drawings.

[0032] Figure 10 This is the front view of the convex component. It is drawn with accuracy based on the product's design drawings.

[0033] Figure 11 This is a schematic diagram illustrating the process of inserting the protrusion of a convex component into the recessed channel of a concave component, thereby engaging the protrusion and the protrusion receiving part.

[0034] Figure 12 This is a schematic diagram illustrating the process of inserting the protrusion into the concave channel and engaging the engaging protrusion with the protrusion receiving part.

[0035] Figure 13 This is a schematic diagram showing the state in which the protrusion is inserted into the concave channel and the engaging protrusion engages with the protrusion receiving part.

[0036] Figure 14 It is along the concave part Figure 7 A horizontal sectional view with a single-dash line X14-X14. Drawn with accuracy based on the product's design drawings.

[0037] Figure 15 It is a horizontal cross-sectional schematic diagram showing the state in which the leaf spring flexes in the same direction as the concave part is pulled by the rope, forming a tiny gap between the leaf spring and the guide protrusion.

[0038] Figure 16 This is a horizontal cross-sectional view showing the state in which the locking protrusion is disengaged from the protrusion receiving part by bending the leaf spring backward with a rope. The locking protrusion can disengage from the protrusion receiving part and retract to the left or right from there.

[0039] Figure 17 This is a vertical sectional view of the connecting device in the width direction when the convex and concave parts are connected. It is drawn with accuracy based on the product design drawings.

[0040] Figure 18 This is a top view of a connecting device according to another method of this disclosure.

[0041] Figure 19 It is along the connecting device Figure 18 A vertical section diagram of the single-dash line AA.

[0042] Explanation of reference numerals in the attached figures

[0043] 1. Connecting device; 3. Guide protrusion; 4p, lower groove; 4q, upper groove; 5p, inclined surface; 5q, inclined surface; 7. Rope channel; 9. Operating window; 10. Recess; 11. Lower plate; 11a, lower restriction part; 12. Upper plate; 12a, upper restriction part; 13. Connecting plate; 20. Recessed channel; 21. Channel end; 22. Channel end; 30. Opening; 60. Protrusion; 6 5. Leaf spring; 65a. Outer surface; 65b. Inner surface; 68. Rope connection; 68a. Internal passage; 68b. Post; 68c. Rope holding part; 70. Main body; 78r. Rear rod; 78s. Inclined surface; 79. Belt passage; 80. Engaging protrusion; 81. Lower protrusion; 82. Upper protrusion; 85. Protrusion storage part; F. Concave part; M. Convex part; OP1. Opening. Detailed Implementation

[0044] Hereinafter, non-limiting embodiments and features of the present invention will be described with reference to the accompanying drawings. Those skilled in the art will be able to combine the various embodiments and / or features without excessive explanation, and will also understand the synergistic effects based on such combinations. Repetitive descriptions between embodiments are omitted in principle. The accompanying drawings are provided primarily for the purpose of describing the invention, and simplifications have been made for ease of drawing.

[0045] Reference Figures 1 to 7 Please provide an explanation. Figure 1 This is a three-dimensional view of the connecting device 1. Figure 2 This is an exploded perspective view of the connecting device 1. Figure 3 This is an exploded perspective view of the connecting device 1, from the perspective of... Figure 2 Diagrams viewed from different perspectives. Figure 4 This is an exploded perspective view of the connecting device 1, showing one state of the connection process between the convex part M and the concave part F. Figure 5 This is a top view of the connecting device 1 when the convex part M and the concave part F are in a separated state. Figure 6 This is a side view of the connecting device 1 when the convex part M and the concave part F are in a separated state. Figure 7 This is a side view of the connecting device 1 when the convex part M and the concave part F are in the connected state. Figures 1 to 7 All drawings were created based on the accuracy of the product's design drawings, and are not simply rough sketches.

[0046] In this instruction manual, such as Figure 2 As shown, the explanation will refer to the directions indicated by the first coordinate C1 and the second coordinate C2 respectively assigned to the concave part F and the convex part M. The first coordinate C1 and the second coordinate C2 differ in that they are flipped in the front-back direction and the left-right direction, respectively. The vertical directions of the first coordinate C1 and the second coordinate C2 are parallel and can be considered identical. The width directions of the concave part F and the convex part M are aligned with the left-right directions of the first coordinate C1 and the second coordinate C2, respectively. The thickness directions of the concave part F and the convex part M are aligned with the vertical directions of the first coordinate C1 and the second coordinate C2, respectively. The length directions of the concave part F and the convex part M are aligned with the front-back directions of the first coordinate C1 and the second coordinate C2, respectively.

[0047] The connecting device 1 consists of a concave part F and a convex part M. The concave part F and the convex part M are resin components injection molded from resin material. They have a rectangular shape when viewed from above, with a width greater than the width (depth) from front to back, and possess sufficient rigidity (mechanical strength) to withstand collisions and friction with other objects. While the concave part F and the convex part M can be 3D-modeled using a 3D printer, in this case, it is desirable to improve their mechanical strength by embedding reinforcing materials.

[0048] Typically, the concave member F is symmetrically shaped in the vertical and horizontal directions, so that the directionality is not recognized in these directions, that is, it can be used even if the concave member F is turned over. The convex member M shown in the figure is symmetrically shaped in the horizontal direction but asymmetrically shaped in the vertical direction (this will become clear from the following description). However, the convex member M can also be used by turning it upside down.

[0049] The concave member F is a member in which a concave channel 20 having channel ends 21 and 22 on both sides in the width direction of the concave member F is formed in the concave portion 10, and an opening 30 that opens the concave channel 20 forward with respect to the concave member F. The concave channel 20 penetrates the concave portion 10 throughout the entire width of the concave portion 10. The concave channel 20 opens to the left and right at the left and right channel ends 21 and 22 and opens forward through the opening 30, that is, it opens in three directions (left, right, and forward). As can be seen from the following description, at a position between the left and right ends of the entire width of the concave portion 10 (for example, the middle position between the left and right ends), the concave channel 20 opens above, below, and / or behind by an operation window (Japanese: アクセス窓) 9 (or opening OP1) described later. The opening 30 is formed in parallel with the concave channel 20 along the entire length of the concave channel 20 in the width direction of the concave member F, and is spatially connected to the concave channel 20 along the entire length of the concave channel 20 in the width direction of the concave member F. The concave member F may also have a rod portion 41 connected to the concave portion 10 from the rear, thereby defining a belt passage 49.

[0050] The convex member M includes: a convex portion 60 that is inserted into the concave channel 20 of the concave portion 10 and is constrained; and a main body portion 70 that is connected to the convex portion 60 behind the convex member M. The main body portion 70 (for example, at the rear of the main body portion 70) may have at least one belt passage 79. Typically, the same or different belts are mounted on the concave member F and the convex member M, but the belts may also be embedded during the injection molding of each member. That is, the method of fixing the belt to the concave member F and the convex member M is arbitrary.

[0051] First, the concave member F will be described in more detail. The concave portion 10 has a cross-sectional shape that is substantially Japanese コ-shaped, substantially letter C-shaped, or substantially letter U-shaped, and includes a lower plate 11, an upper plate 12, and a connecting plate 13 that connects the lower plate 11 and the upper plate 12. The lower plate 11 and the upper plate 12 are flat or curved plate portions that are long in the width direction of the concave member F and narrow in the length direction thereof. The connecting plate 13 is a flat or curved plate portion that is long in the width direction of the concave member F and narrow in the thickness direction thereof. In some cases, the connecting plate 13 is divided into a left side portion and a right side portion in the width direction of the concave member F by the operation window 9 or the opening OP1 described later, but it is not necessarily limited to this form, and may also be continuously formed over the entire width of the concave member F.

[0052] The recess 10 is shaped to constrain the protrusion 60 within the recessed channel 20. Preferably, the lower plate 11 and the upper plate 12 have a lower limiting portion 11a and an upper limiting portion 12a that prevent the protrusion 60 from dislodging from the recessed channel 20 via the opening 30 (moving forward relative to the recessed member F). The recessed channel 20 is defined by the lower plate 11 from below, by the upper plate 12 from above, by the connecting plate 13 from the rear, and by the lower limiting portion 11a and the upper limiting portion 12a from the front.

[0053] The lower limiting portion 11a and the upper limiting portion 12a are arranged opposite each other in the vertical direction, determining the opening width of the opening 30 in the vertical direction. The opening width of the opening 30 is smaller than the height or width of the recessed channel 20 between the lower plate 11 and the upper plate 12 (for example, about 50% to 80% of it). Typically, the lower limiting portion 11a and the upper limiting portion 12a are formed across the entire width of the recessed member F at the leading edge of the lower plate 11 and the leading edge of the upper plate 12. However, they may also be formed discontinuously in the width direction of the recessed member F. For example, the lower limiting portion 11a and the upper limiting portion 12a may be divided into three parts in the width direction of the recessed member F. In this case, the mechanical strength of these limiting portions is reduced, but the weight of the recessed member F can be reduced.

[0054] It is also conceivable that the lower limiting part 11a and the upper limiting part 12a are positioned at different locations in the front-rear direction. The vertical width of the opening 30, measured between the lower limiting part 11a and the upper limiting part 12a, can vary depending on the offset distance between them in the front-rear direction. Furthermore, one of the lower limiting part 11a and the upper limiting part 12a can, of course, be omitted. Other structures concerning the recessed member F will be described later.

[0055] Add reference Figures 8 to 10 The convex component M will be described in more detail. Figure 8 For the convex part M along Figure 5 A vertical sectional view of the single-dash line X8-X8. Figure 9 For the convex part M along Figure 6 A horizontal sectional view of the single-dotted dashed line X9-X9. Figure 10 This is a front view of the convex component M. All accompanying drawings are drawn with accuracy based on the product's design drawings.

[0056] The protrusion 60 is a frame-shaped portion that is wider in the width direction and narrower in the length direction of the protrusion M. Specifically, the protrusion 60 includes: a leaf spring 65, which can elastically flex and deform by external operation based on a rope; a support wall 61 supporting one end of the leaf spring 65; a support wall 62 supporting the other end of the leaf spring 65; and restrained portions 63 and 64, which are restrained by a lower restrained portion 11a and an upper restrained portion 12a. A space exists between the leaf spring 65 and the restrained portions 63 and 64, allowing the leaf spring 65 to flex rearward. Additionally, the rope connection portion 68, described later, can also be arranged into this space. Furthermore, the leaf spring 65 and the restrained portions 63 and 64 are arranged with a first interval spaced apart in the front-rear direction. The support walls 61 and 62 are arranged with a larger second interval spaced apart in the left-right direction. The second interval can be in the range of 3 to 8 times the first interval.

[0057] The leaf spring 65 has an outer surface 65a and an inner surface 65b that determine the thickness of the leaf spring 65. The outer surface 65a of the leaf spring 65 is a surface that is slightly warped forward over the entire width between the left and right support walls 61 and 62, and has no protrusions except for the engaging protrusions 80 (lower protrusion 81 and upper protrusion 82, described later) that are provided in a manner that protrude forward toward the convex member M. By using such a leaf spring 65, it is possible to facilitate the smooth insertion of the convex member 60 into the concave channel 20, and it is also possible to simplify the forming mold of the convex member M. In the initial position where the leaf spring 65 is not elastically deformed, the outer surface 65a is slightly warped away from the body portion 70 in the width direction of the convex member M. Similarly, the inner surface 65b is slightly warped away from the body portion 70 in the width direction of the convex member M.

[0058] The thickness of the leaf spring 65, determined between the outer surface 65a and the inner surface 65b, is typically in the range of 1.0 mm to 3.0 mm. If the leaf thickness is too small, the target connection strength may not be achieved, and its mechanical strength will be reduced. If the leaf thickness is too large, the connection strength becomes too great, and it will be difficult to disengage the connection between the convex part M and the concave part F even by rope manipulation.

[0059] Preferably, the radius of curvature of the outer surface 65a is 0.4 m or more, or 0.5 m or more, or 0.6 m or more. The radius of curvature of the inner surface 65b is approximately equal to that of the outer surface 65a, but may be different. When the protrusion M is injection molded with the leaf spring 65 having a larger radius of curvature, it is expected that mold costs will be reduced and / or the occurrence of molding defects will be reduced. The leaf spring 65 can have any size and / or shape as long as it deforms according to the directly or indirectly applied external force and elastically returns to its initial posture upon the release of the external force. For example, a leaf spring with a smaller vertical width than the leaf spring shown in the figure can be used. A leaf spring with a wavy upper edge and a wavy lower edge can also be used. A leaf spring with a vertical height variation in the width direction of the protrusion M can also be used. A leaf spring with a thickness variation in the width direction of the protrusion M can also be used.

[0060] The leaf spring 65 has a rope connection portion 68 for rope-based external operation, and optionally, displacement limiting protrusions 69p and 69q that determine the deformation limit point of the leaf spring 65. By pulling the rope behind the protruding member M, the rope connection portion 68 is moved rearward, allowing the leaf spring 65 with the rope connection portion 68 to flex or bend rearward in an arc shape.

[0061] The rope connection 68 is provided to connect to the inner surface 65b of the leaf spring 65, rather than its outer surface 65a. That is, the rope connection 68 is convexly provided within the frame space of the protrusion 60, thereby ensuring that the protrusion 60 is smoothly inserted into the recessed channel 20. Preferably, the rope connection 68 has a left-right width that decreases as it moves away from the leaf spring 65. When the rope is pulled backward, causing the leaf spring 65 to bend backward, the rear end of the rope connection 68 is smoothly received into the rope channel 7 described later.

[0062] The displacement limiting protrusions 69p and 69q are configured to collide with the restricted portions 63 and 64 (specifically, the walls of the frame space within the determining protrusions 60 of the restricted portions 63 and 64) when the rope connection 68 is pulled backward by the rope, thereby suppressing damage to the leaf spring 65. The front-to-back spacing between the displacement limiting protrusions 69p and 69q and the walls of the restricted portions 63 and 64 when the leaf spring 65 is not deformed is set in a manner corresponding to the allowable limit of deformation of the leaf spring 65 or a deformation smaller than the allowable limit. In the example shown, the displacement limiting protrusions 69p and 69q are provided in a manner that connects to the left and right sides of the rope connection 68, thereby improving mechanical strength, but are not necessarily limited to this.

[0063] Rope junction 68 may include an internal passage 68a for the rope to pass through, a post 68b for the rope to be wound around, and a rope holding part 68c for compressing and holding the rope (see in particular). Figure 9Alternatively, the internal passage 68a reaches the outer surface 65a of the leaf spring 65, thus forming an opening OP2 on the outer surface 65a (i.e., an opening different from the opening OP1) (see, in particular, reference). Figure 10 A rope holding part 68c and a post 68b are sequentially arranged from the opening OP2 of the leaf spring 65. In this case, after the rope is loosely wound around the post 68b, it is automatically inserted into the rope holding part 68c and held in place by pulling the rope backward, making rope installation simple. In addition, the recess 10 does not have a protrusion into the opening OP2, which facilitates the simplification of the forming mold of the recess F.

[0064] The rope holding portion 68c is configured to reduce the width of the internal passage 68a, preferably by reducing the width in the thickness direction of the convex member M (for example, see reference). Figure 8 In some cases, the rope retaining portion 68c includes an upper portion located above the internal passage 68a and a lower portion located below the internal passage 68a. The vertical spacing between these upper and lower portions is less than the diameter of the rope (or less than the maximum width of the rope). The rope typically has a circular or elliptical cross-sectional shape. The rope is a braided rope that is elastic in its length direction and can naturally recover its shape in its cross-sectional direction, but is not limited thereto; paper rope, hemp rope, or rope containing metal wire (e.g., power cord) may also be used. That is, the rope is only suitable for the purpose of operating the leaf spring 65, and its material is not limited.

[0065] The restricted portions 63 and 64 have lower ends that protrude downwards from the lower surface of the main body 70. When the concave member F and the convex member M are connected, and the convex member M moves away from the concave member F, the lower ends of the restricted portions 63 and 64 collide with the lower restricting portion 11a and are thus restricted from movement. Similarly, the restricted portions 63 and 64 have upper ends that protrude upwards from the upper surface of the main body 70. When the concave member F and the convex member M are connected, and the convex member M moves away from the concave member F, the upper ends of the restricted portions 63 and 64 collide with the upper restricting portion 12a and are thus restricted from movement. Ideally, the two collision times are simultaneous.

[0066] When the convex member M and the concave member F are connected, the rope connection portion 68 is disposed within the recessed channel 20 of the concave portion 10. Therefore, it is desirable to form a rope channel in either the convex member M or the concave member F for retracting the rope connected to the rope connection portion 68 outward. In order to flex the leaf spring 65 rearward, it is desirable to apply a rearward linear pulling force to the leaf spring 65. This is especially true when the leaf spring 65 has a thickness that is difficult to flex easily (e.g., a thickness of 5 mm or 8 mm or more). From the above aspects, it is preferable to provide the rope channel 7 for the convex member M. However, it is not limited to this; for example, an opening or cut may be formed in the concave portion 10 of the concave member F to form the rope channel. For example, the opening OP1, described later, can be extended to the front end of the concave portion 10 to form the rope channel.

[0067] The main body 70 has a rope channel 7 that allows the rope to extend rearward from the rope joint 68. The rope channel 7 is spatially connected to the space within the frame of the protrusion 60. Typically, the rope channel 7 is spatially connected to the belt passage 79. In the example shown, the rope channel 7 is partially open in the vertical direction and has a horizontal width much larger than the diameter or width of the rope, thus allowing the rope to easily pass through the rope channel 7 and enabling visual confirmation of the rope's passage.

[0068] The main body 70 can have one or more lower rods 71 ​​and one or more upper rods 72 that clamp the rope on the upper and lower sides. The rope passing through the rope channel 7 is clamped between the upper rod 72 and the lower rod 71, thereby positioning the rope at or near the thickness center of the convex member M, which promotes a more stable rearward pull on the rope and causes the leaf spring 65 to flex and deform rearward.

[0069] The main body 70 includes: left and right plate-shaped portions 78p and 78q, which are disposed on the left and right sides of the rope channel 7, defining the left and right width of the rope channel 7; and a rear rod 78r, which defines a conveyor belt passage 79 from the rear (more specifically, it is disposed behind the conveyor belt passage 79). The rear rod 78r is connected to the left and right plate-shaped portions 78p and 78q at both the left and right ends to define the conveyor belt passage 79.

[0070] Plate-shaped portions 78p and 78q extend from the outer periphery of the main body 70 toward the center of the concave member F in the width direction, defining the rope channel 7. The width of the rope channel 7 is defined by the opposing surfaces of the plate-shaped portions 78p and 78q. Preferably, the channel width can be shaped to increase progressively in the left and right directions relative to the convex member M, thereby avoiding interference with the rope connection portion 68. An upper rod 72 is mounted across the left and right plate-shaped portions 78p and 78q in the width direction of the convex member M, and the same applies to the lower rod 71.

[0071] The left and right plate-like portions 78p and 78q preferably have a thickness smaller than the vertical spacing between the lower limiting portion 11a and the upper limiting portion 12a, thereby facilitating smooth insertion of the protrusion 60 into the concave channel 20. A peripheral wall 75 can be provided on one or both surfaces of the upper and lower surfaces of the main body portion 70. In this case, a groove 76 is formed adjacent to the limited portions 63 and 64, which can prevent interference with the lower limiting portion 11a and the upper limiting portion 12a. The front surface of the rear rod 78r is an inclined surface 78s that slopes approximately the entire thickness of the rear rod 78r (see reference). Figure 8 This avoids or suppresses interference between the rope and the belt in the belt passage 79. The approximate total thickness mentioned here refers to more than 80% of the thickness defined by the upper and lower surfaces of the rear bar 78r, which are connected via the front surface of the rear bar 78r.

[0072] Next, the description will focus on limiting the displacement of the protrusion 60 within the recessed channel 20 in the width direction of the connecting device 1. For the purpose of limiting the displacement of the protrusion 60 within the recessed channel 20, a locking protrusion 80 is provided in the leaf spring 65, and a protrusion receiving portion 85 is formed in the recess 10.

[0073] The engaging protrusion 80 includes a lower protrusion 81 and an upper protrusion 82, which are spaced apart and opposed to each other in the vertical direction. Both the lower protrusion 81 and the upper protrusion 82 can be disposed within the protrusion receiving portion 85 (the opening OP1 described later). Compared with the configuration of a single large protrusion, the influence on the elastic characteristics of the leaf spring 65 can be suppressed. The opposing surfaces of the lower protrusion 81 and the upper protrusion 82 are both flat surfaces, thereby avoiding the complexity of the construction of the core for forming the internal structure of the rope connection portion 68 (e.g., the internal passage 68a, the post 68b, and the rope holding portion 68c).

[0074] The lower surface of the lower protrusion 81 includes an inclined region that slopes upward as it extends toward the tip of the lower protrusion 81, thereby forming a thin wall on the tip side of the lower protrusion 81. The upper surface of the upper protrusion 82 includes an inclined region that slopes downward as it extends toward the tip of the upper protrusion 82, thereby forming a thin wall on the tip side of the upper protrusion 82.

[0075] The protruding receiving portion 85 is a space recessed rearward relative to the concave member F to accommodate the engaging protrusion 80 that protrudes forward relative to the convex member M. In some cases, the protruding receiving portion 85 extends through the connecting plate 13 or is recessed within the inner surface of the connecting plate 13. In the former case, it facilitates the forming of the protruding receiving portion 85. In the latter case, it is preferable that the engaging protrusion 80 is received within the protruding receiving portion 85 in a manner that does not protrude rearward from the rear surface of the connecting plate 13. This avoids or suppresses the situation where the engaging protrusion 80 protrudes from the rear surface of the connecting plate 13 and gets caught on an external object.

[0076] The engagement of the engaging protrusion 80 with the protrusion receiving portion 85, achieved by the elastic deformation of the leaf spring 65, restricts the displacement of the protrusion 60 along the concave channel 20. Furthermore, the engaging protrusion 80 can be released from the protrusion receiving portion 85 based on the flexural deformation of the leaf spring 65 caused by external rope-based operation. Specifically, with the protrusion 60 inserted into the concave channel 20 and the engaging protrusion 80 engaged with the protrusion receiving portion 85, it is difficult or almost impossible to access the leaf spring 65 from the outside except through a pre-set external rope-based operation. Therefore, except for release achieved through a pre-set external rope-based operation, the state of restricting the displacement of the protrusion 60 along the concave channel 20 can be maintained permanently or semi-permanently. On the other hand, when it is difficult to perform external rope-based operation of the leaf spring 65 for some reason, it may be difficult to disengage the connection between the concave member F and the protrusion M.

[0077] In this embodiment, the recess 10 has at least one operating window 9 that allows for direct or indirect application of external force to the leaf spring 65 to release the engaging protrusion 80 from the protrusion receiving portion 85, while restricting the displacement of the protrusion 60 along the recess 20 within the recess 20 by engaging the engaging protrusion 80 with the protrusion receiving portion 85, thereby enabling emergency disengagement. For clarity, the operating window 9 is an opening distinct from the channel ends 21 and 22. In some cases, the operating window 9 (and / or the opening OP1 described later) extends through the lower plate 11, the upper plate 12, and the connecting plate 13, respectively, thereby enabling operation from multiple directions.

[0078] To reiterate, when it is difficult to externally operate the leaf spring 65 using a pre-set rope, disengaging the connecting device 1 becomes difficult. For example, when the connecting device 1 is used to secure defensive equipment inside a ship or aircraft, it can hinder the use of that equipment. The aforementioned operating window 9 provides an emergency solution for such situations. For example, a rod-shaped member (e.g., a thin rod-shaped tool (Phillips screwdriver, flathead screwdriver, etc.)) can be inserted into the operating window 9, forcibly bending the leaf spring 65 with the rod-shaped member, releasing the engagement between the engaging protrusion 80 and the protrusion receiving portion 85, and pulling laterally to disengage the protrusion 60 from the recessed channel 20. Furthermore, the direction of the lateral pull is consistent with the width direction of the connecting device 1.

[0079] The manner or extent of engagement between the engaging protrusion 80 and the protrusion receiving portion 85 is determined according to individual requirements. In some cases, the engagement between the engaging protrusion 80 and the protrusion receiving portion 85 is a loose fit (gap fit), in which the engaging protrusion 80 can (typically slightly) displace within the protrusion receiving portion 85 in the width direction of the connecting device 1 (e.g., its maximum displacement distance is about 6 mm). In other cases, the engaging protrusion 80 is pushed in and engaged (e.g., pressed into) the protrusion receiving portion 85 (by the elasticity of the leaf spring 65). In any case, the displacement of the protrusion 60 along the recessed channel 20 is restricted within the recessed channel 20.

[0080] The protruding storage portion 85 does not necessarily need to penetrate the recess 10 (e.g., connecting plate 13); it is sufficient for it to be recessed only in a direction intersecting the extending direction of the recessed channel 20 (e.g., behind the recessed component F). On the other hand, unlike the protruding storage portion 85, the operating window 9 needs to penetrate the recess 10 (any one or two or all of the lower plate 11, upper plate 12, and connecting plate 13), otherwise, the leaf spring 65 disposed within the recessed channel 20 cannot be operated from the outside. Furthermore, it is also conceivable that the operating window 9 is closed with a sliding cover and that the cover can be slid to open the operating window 9 when necessary. The operating window 9 can also be covered with a removable or destructible film (e.g., transparent or colored film, rubber sheet, seal), which can be removed or destroyed to open the operating window 9 when needed.

[0081] As described above, there are different requirements for the protruding storage portion 85 and the operating window 9, and their positions and sizes can be determined individually based on these requirements. Therefore, in this context, the protruding storage portion 85 and the operating window 9 are located in different positions. However, from more than one viewpoint, such as simplifying the structure of the mold (and even simplifying the structure of the recessed part F), the rigidity of the recessed part F, mechanical strength, and the operability of unconnection via the operating window 9, it is best to arrange the protruding storage portion 85 and the operating window 9 at the same location in the width direction of the recess 10, thereby forming an opening OP1 that serves as both the protruding storage portion 85 and the operating window 9.

[0082] The opening OP1 is formed penetrating through the recess 10 from the outer surface of the recess 10 to the recessed channel 20. When the engaging protrusion 80 and the protrusion receiving portion 85 are engaged, external force can be applied to the leaf spring 65 indirectly via the engaging protrusion 80 disposed in the opening OP1. Instead of directly pressing the leaf spring 65, the leaf spring 65 is pressed indirectly via the engaging protrusion 80, thereby ensuring greater operability. Furthermore, it can be said that the protrusion receiving portion 85 and the operating window 9 are provided by the shared opening OP1 formed penetrating through the recess 10 from the outer surface of the recess 10 to the recessed channel 20.

[0083] The engaging protrusions 80 (preferably both the lower protrusion 81 and the upper protrusion 82) are disposed within the opening OP1 in a manner that does not protrude from the opening OP1. That is, when disposed within the opening OP1, the engaging protrusions 80 do not protrude outward (e.g., rearward, upward, or downward) beyond the outer surface (e.g., rear surface, upper surface, or lower surface) of the recess 10, thus preventing the connection between the recessed member F and the convex member M from being unexpectedly released. However, since the state in which the engaging protrusions 80 can float within the opening OP1 can be observed and understood from the outside (provided that the operating window 9 is not sealed), even for someone who is not familiar with the operation of the operating window 9, the following operation can be readily conceived: pressing the engaging protrusions 80 via the operating window 9 on the spot causes the leaf spring 65 to elastically deform, causing the engaging protrusions 80 to disengage from the protrusion receiving portion 85.

[0084] The operating window 9 and / or opening OP1 are defined by left and right wall surfaces 85a and 85b, which are spaced apart in the width direction of the recess 10. The distance between the left and right wall surfaces 85a and 85b is less than 1 cm, preferably in the range of 3 mm to 10 mm. This can prevent or suppress the unintentional disengagement of the engaging protrusion 80 and the protrusion receiving part 85 from expanding the operating space to an unnecessary extent. The left and right wall surfaces 85a and 85b are also the limiting surfaces of the protrusion receiving part 85, which prevent the engaging protrusion 80 from moving.

[0085] Here, the characteristic structure of the recess 10 will be described. A guide protrusion 60 is provided on the connecting plate 13, allowing at least one guide protrusion 3 to move along the recessed channel 20. The guide protrusion 3 has a rectangular cross-sectional shape, thereby reducing the spatial dimensions of the channel ends 21, 22 of the recessed channel 20, facilitating a more stable insertion of the protrusion 60 into the recessed channel 20 (while simultaneously making it more difficult to operate the leaf spring 65 from the channel ends 21, 22). Typically, a guide protrusion 3 is positioned at the midpoint (directly in the middle) between the lower plate 11 and the upper plate 12. A lower groove 4p is formed between the guide protrusion 3 and the lower plate 11 for the insertion of a lower protrusion 81, and an upper groove 4q is formed between the guide protrusion 3 and the upper plate 12 for the insertion of an upper protrusion 82. The guide protrusion 3 does not need to be formed along the entire length of the recessed channel 20. In the disclosed example, the operating window 9 or opening OP1 is formed through the connecting plate 13, and no guide protrusion 3 is formed at this through-section. As a result, the guide protrusion 3 is divided into left and right portions arranged on both sides of the operation window 9 or the opening OP1. As the number of operation windows 9 increases, the number of guide protrusions 3 can also increase (for example, the guide protrusion 3 is divided into 3 non-contiguous portions).

[0086] The connecting plate 13 has at least one inclined surface 5p, 5q for the engaging protrusion 80 to slide and cause the leaf spring 65 to flex when the protrusion 60 is inserted into the concave channel 20. Typically, left and right inclined surfaces 5p, 5q are provided on both sides of the opening OP1. The left and right inclined surfaces 5p, 5q form a convex wedge shape that protrudes into the concave channel 20 (specifically, forward). Using the inclined surfaces 5p, 5q, it is possible to facilitate the forming of the leaf spring 65 with a larger radius of curvature (such as through injection molding). When the leaf spring 65 is formed with a larger radius of curvature, the concave part F and the convex part M can be connected with less force.

[0087] With a lower groove 4p and an upper groove 4q provided, the left and right inclined surfaces 5p and 5q can be the bottom surfaces of the lower groove 4p and the upper groove 4q. For the purpose of limiting the insertion direction and separation (disengagement) direction of the protrusion 60 relative to the concave channel 20 to only one side (left or right), one of the left and right inclined surfaces 5p and 5q can be omitted. According to the accompanying drawings, it is immediately apparent that the height of the guide protrusion 3 decreases inversely proportional to the increase in the height of the inclined surface.

[0088] Reference Figures 11 to 13 The connection process between the concave component F and the convex component M will be explained. First, the convex component 60 is inserted into the concave channel 20 (refer to...). Figure 11 Specifically, the protrusion 60 is inserted into the recessed channel 20 from one end (e.g., channel end 21) toward the other end (e.g., channel end 22) and held within the recessed channel 20. In this state, the position of the protrusion 60 is restricted from below by the lower plate 11, from above by the upper plate 12, from behind by the connecting plate 13, and from the front by the lower limiting portion 11a and the upper limiting portion 12a. Then, when the protrusion 60 slides along the recessed channel 20 within the recessed channel 20, the engaging protrusions 80 (e.g., the lower protrusion 81 and the upper protrusion 82) collide with the inclined surface 5p (see reference). Figure 12 ).

[0089] When a force is applied to the convex member M to further slide the convex member 60, the leaf spring 65 flexes rearward relative to the convex member M (e.g., in a shallow arc or shallow V-shape), and the engaging protrusion 80 also displaces in the same direction (see reference). Figure 12 (The arrow). Depending on the implementation, sometimes when the leaf spring 65 flexes rearward, the support walls 61 and 62 can also deform toward the center of the width direction of the protrusion M. After the engaging protrusion 80 has completely passed the inclined surface 5p, the leaf spring 65 elastically returns to its original shape or the side of its original shape, that is, moves forward relative to the protrusion M, and the engaging protrusion 80 also displaces in the same direction. As a result, the engaging protrusion 80 enters into the protrusion receiving portion 85 and engages, preventing the protrusion 60 from sliding along the concave channel 20 (see...). Figure 13The engaging protrusion 80 can move slightly between the left and right walls 85a and 85b, or be gently pressed between the left and right walls 85a and 85b.

[0090] At the end of the connection between the concave member F and the convex member M, the leaf spring 65 is located within the concave channel 20. Therefore, (except for visual recognition via the operation window 9 or opening OP1) it cannot be visually recognized from the outside in top, bottom, and rear views relative to the concave member F. Typically, at the end of the connection between the concave member F and the convex member M, the leaf spring 65 is either not visually recognized or almost invisible from the outside in left, right, and front views relative to the concave member F. At the end of the connection between the concave member F and the convex member M, the channel end 22 is closed by the support wall 61, and similarly, the channel end 21 can be closed by the support wall 62.

[0091] Reference Figures 14 to 16 The connection release operation between the concave member F and the convex member M will be explained. First, the protruding receiving part 85 and the engaging protrusion 80 are in an engaged state, preventing the convex member 60 from sliding along the concave channel 20 (see reference). Figure 14 When the rope is pulled rearward relative to the convex member M, the rope joint 68 displaces in the same direction, and the leaf spring 65 also flexes in the same direction (see reference). Figure 15 If the engaging protrusion 80 is sufficiently displaced (rearward relative to the convex member M) until it disengages from the protrusion receiving portion 85 (see reference). Figure 16 This allows the protrusion 60 to slide along the recessed channel 20. By pulling the rope straight backward relative to the protrusion M and then pulling it diagonally to the right or left relative to the protrusion M, the engaging protrusion 80 can be disengaged from the protrusion receiving portion 85, and then the protrusion 60 can slide along the recessed channel 20. Furthermore, by chamfering the left and / or right corners of the tip of the engaging protrusion 80, the engaging protrusion 80 can smoothly transition from moving backward to moving to the left or right. If the engaging protrusion 80 is loosely received within the protrusion receiving portion 85, it can smoothly transition from moving backward to moving to the left or right (the engaging protrusion 80 can move to the left or right within the protrusion receiving portion 85, and can begin moving to the left or right with lower frictional resistance).

[0092] As described above, by providing the operation window 9 (which also serves as the opening OP1 for the operation window 9 to function), the connection between the convex member M and the concave member F can be released in an emergency. This feature is as follows: Figure 17 As shown. When viewed from the front. Figure 17When the rod-shaped member (not shown) is used, the lower protrusion 81 can be easily operated from the lower left, and similarly, the upper protrusion 82 can be easily operated from the upper left. The recessed channel 20 of the recess 10 is open in three directions—upward, downward, and rearward—through the opening OP1, so the lower protrusion 81 and the upper protrusion 82 can be operated simultaneously or together using a common rod-shaped member. The lower protrusion 81 and / or the upper protrusion 82 are pressed out of the opening OP1 and enter the recessed channel 20 by the rod-shaped member. In this way, the engagement between the lower protrusion 81 and the upper protrusion 82 and the protrusion receiving part 85 is released, and the protrusion 60 can be dislodged from the recessed channel 20 by pulling horizontally. To reiterate, the operation window 9 does not need to be located in the same position as the protrusion receiving part 85. Alternatively, two operation windows 9 can be provided on both sides of the recess F in the width direction, separated by the protrusion receiving part 85.

[0093] Reference Figure 18 , Figure 19 Another embodiment of this disclosure will be described. In this other embodiment, a protruding receiving portion 85 is formed in the leaf spring 65, and an engaging protrusion 80 is provided in the recess 10. The engaging protrusion 80 is provided in the recessed channel 20, protruding forward relative to the recessed member F. Furthermore, the operating window 9 is provided in a different position than the protruding receiving portion 85. In this embodiment, the same effect can be obtained within the scope of not contradicting the above. Within the scope of not contradicting the above, the above features can be applied individually or in any combination.

[0094] like Figure 18 As schematically shown, the recess 10 has a locking protrusion 80 protruding into the recessed channel 20. The leaf spring 65 is formed with a smaller radius of curvature than in the above embodiment. A protrusion receiving portion 85 for engaging the locking protrusion 80 is formed on the top of the leaf spring 65, which curves convexly forward relative to the protruding member M. A rope connecting portion 68 (not shown) is provided on the leaf spring 65, which can release the engagement between the locking protrusion 80 and the protrusion receiving portion 85. Unlike the above embodiment, the operation window 9 is located in a different position from the protrusion receiving portion 85. Specifically, two operation windows 9 are provided on the left and right sides of the locking protrusion 80. Furthermore, the leaf spring 65 can be directly operated via the operation windows 9. In this configuration, the connection can also be urgently released via the operation windows 9.

[0095] Based on the above disclosure, those skilled in the art can make various modifications to the features and embodiments. The reference numerals added to the claims are for reference only and should not be considered as limiting the interpretation of the claims.

Claims

1. A connecting device, the connecting device (1) comprising: The recessed component (F) has recessed channels (20) with channel ends (21, 22) on both sides of the recess (10) in the width direction of the recessed component (F) and an opening (30) that opens the recessed channels (20) to the front relative to the recessed component (F); and The convex member (M) includes a convex portion (60) constrained by the recessed channel (20) inserted into the recess (10) and a body portion (70) connected to the convex portion (60) at the rear relative to the convex member (M). The convex portion (60) includes a leaf spring (65) that can be elastically flexed and deformed by external operation performed by a rope. The engagement of the engaging protrusion (80) with the protrusion receiving portion (85) is achieved by means of the elastic deformation of the leaf spring (65), thereby restricting the displacement of the protrusion (60) along the concave channel (20) and allowing the engaging protrusion (80) to be released from the protrusion receiving portion (85) according to the flexural deformation of the leaf spring (65) caused by external operation of the rope, wherein, The recess (10) has at least one operating window (9) that allows the leaf spring (65) to be directly or indirectly applied to release the engaging protrusion (80) from the protrusion receiving portion (85) while the protrusion (60) is restricted from displacement along the recess (20) within the recess (20) by engaging the engaging protrusion (80) with the protrusion receiving portion (85).

2. The connecting device according to claim 1, wherein, The leaf spring (65) has an outer surface (65a) and an inner surface (65b) that determine the thickness of the leaf spring (65). The engaging protrusion (80) is provided on the outer surface (65a) of the leaf spring (65), and the protrusion receiving portion (85) is formed in the recess (10).

3. The connecting device according to claim 2, wherein, The protruding storage portion (85) and the operation window (9) are provided at the same location in the width direction of the recess (10) to form an opening (OP1) that serves as both the protruding storage portion (85) and the operation window (9). The opening (OP1) extends from the outer surface of the recess (10) through the recessed channel (20) through the recess (10). In the engaged state of the engaging protrusion (80) and the protruding storage portion (85), the leaf spring (65) can be indirectly subjected to external force via the engaging protrusion (80) disposed in the opening (OP1).

4. The connecting device according to claim 3, wherein, The opening (OP1) is defined by left and right walls (85a, 85b) that are spaced apart in the width direction of the recess (10), with the interval between the left and right walls (85a, 85b) being less than 1 cm.

5. The connecting device according to claim 3, wherein, The recess (10) includes a lower plate (11), an upper plate (12), and a connecting plate (13) that connects the lower plate (11) and the upper plate (12). The opening (OP1) passes through the lower plate (11), the upper plate (12), and the connecting plate (13).

6. The connecting device according to claim 3, wherein, The engaging protrusion (80) includes a lower protrusion (81) and an upper protrusion (82) that are spaced apart and opposite each other in the vertical direction, both of which are configured to be disposed within the opening (OP1) without protruding from the opening (OP1).

7. The connecting device according to claim 6, wherein, The recess (10) includes a lower plate (11), an upper plate (12), and a connecting plate (13) connecting the lower plate (11) and the upper plate (12). The connecting plate (13) is provided with at least one guide protrusion (3) for guiding the protrusion (60) to move along the recessed channel (20). A lower groove (4p) for the lower protrusion (81) to be inserted is formed between the guide protrusion (3) and the lower plate (11). An upper groove (4q) for the upper protrusion (82) to be inserted is formed between the guide protrusion (3) and the upper plate (12).

8. The connecting device according to claim 3, wherein, The recess (10) includes a lower plate (11), an upper plate (12), and a connecting plate (13) that connects the lower plate (11) and the upper plate (12). The connecting plate (13) has at least one inclined surface (5p, 5q), and when the protrusion (60) is inserted into the concave channel (20), the engaging protrusion (80) slides on the at least one inclined surface (5p, 5q) to cause the leaf spring (65) to flex.

9. The connecting device according to claim 3, wherein, The leaf spring (65) has a rope junction (68) to which the rope is attached. The rope connection (68) includes an internal passage (68a) through which the rope passes, a post (68b) around which the rope is wound, and a rope holding part (68c) that compresses and holds the rope. The internal passage (68a) reaches the outer surface (65a) of the leaf spring (65) and forms an opening (OP2) on the outer surface (65a). The rope holding part (68c) and the post (68b) are arranged sequentially from the opening (OP2) of the leaf spring (65).

10. The connecting device according to claim 9, wherein, The recess (10) does not have a protrusion that protrudes into the opening (OP2) formed on the outer surface (65a) of the leaf spring (65) by means of the internal passage (68a).

11. The connecting device according to claim 3, wherein, The leaf spring (65) has a rope junction (68) to which the rope is attached. The main body (70) has a rope channel (7) that allows the rope to extend from the rope joint (68) to the rear relative to the protrusion (M). The main body (70) includes at least one carrying passage (79) that is spatially connected to the rope channel (7) and a rear bar (78r) that defines the carrying passage (79) from the rear relative to the convex member (M), the front surface of the rear bar (78r) including an inclined surface (78s) that is inclined over substantially the entire thickness of the rear bar (78r).

12. The connecting device according to any one of claims 1 to 10, wherein, The recess (10) includes a lower plate (11), an upper plate (12), and a connecting plate (13) connecting the lower plate (11) and the upper plate (12). The lower plate (11) and the upper plate (12) have a lower limiting part (11a) and an upper limiting part (12a), respectively, thereby preventing the protrusion (60) from dislodging from the recessed channel (20) through the opening (30).

13. A method for releasing the connection between a protruding and recessed part of a connecting device, wherein the connection between the protruding part (M) and the recessed part (F) in the connecting device according to claim 1 is released, wherein... The methods for removing this link include: The process of inserting a rod-shaped member into the operating window (9), thereby applying external force directly or indirectly to the leaf spring (65), and releasing the engaging protrusion (80) from the protrusion receiving portion (85); and The process of pulling the protrusion (60) out of the recessed channel (20) by pulling it horizontally.

14. The method according to claim 13, wherein, The leaf spring (65) has an outer surface (65a) and an inner surface (65b) that determine the thickness of the leaf spring (65). The engaging protrusion (80) is provided on the outer surface (65a) of the leaf spring (65), and the protrusion receiving portion (85) is formed in the recess (10). The protruding storage portion (85) and the operation window (9) are provided at the same location in the width direction of the recess (10) to form an opening (OP1) that serves as both the protruding storage portion (85) and the operation window (9). The opening (OP1) extends from the outer surface of the recess (10) through the recessed channel (20) through the recess (10). In the engaged state of the engaging protrusion (80) and the protruding storage portion (85), the leaf spring (65) can be indirectly subjected to external force via the engaging protrusion (80) disposed in the opening (OP1).

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