JP4630472B2 - Connecting ring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting ring such as a chain or a carabiner.
[0002]
[Prior art and problems to be solved by the invention]
An opening / closing body 4 is pivotally attached to one end portion of the opening 3 of the ring base 2 through which the connected object 1 such as a chain, a rope, and a wire is moved in and out, so that the opening 3 can be freely opened and closed. In the connecting ring configured to rotate the opening / closing body 4 inward against the spring 5 biased in the direction to open the opening 3 and allow the connection object 1 to enter and exit the ring base 2, The pivoting structure of one end of the opening 3 and one end of the opening / closing body 4 has a pivoting shaft 7 installed between opposing walls 6 provided on one side and a connecting portion 8 provided on the other side. The spring 5 is wound around the shaft 7.
[0003]
That is, for example, the base end of the opening / closing body 4 made of a channel-shaped material having a U-shaped cross section is pivotally attached to one end of the opening 3 of the ring base 2 made of a C-shaped hook, and is provided so as to be rotatable. The opening / closing body 4 is configured to close the opening 3 by the biasing force of the spring 5.
[0004]
Specifically, for example, in Conventional Example 1 shown in FIG. 5, one end portion of the opening 3 is formed into a narrow rod shape to form a connecting portion 8, and a channel-shaped opening / closing body 4 is fitted to the connecting portion 8. The pivot shaft 7 is inserted into the shaft hole 10 provided in the connecting portion 8, and the pivot shaft 7 is installed between the opposing walls 6 of the opening / closing body 4 to be pivotally mounted to pivot the opening / closing body 4. In addition, the spring 8 is wound around the pivot shaft 7 exposed to the left and right, that is, the space between the left and right outer surfaces of the connecting portion 8 and the opposing wall 6 of the opening / closing body 4 by making the connecting portion 8 into a narrow rod shape. The arrangement is arranged.
[0005]
Further, in the conventional example 2 shown in FIG. 6, one end of the opening 3 is cut out on one side and a narrow hook-like projecting portion is formed at a position close to one side to form a connecting portion 8, which is the same as the conventional example 1. The pivot shaft 7 is inserted into the shaft hole 10 provided in the coupling portion 8 to pivotally attach the opening / closing body 4, and the pivot shaft 7 exposed on one side of the coupling portion 8, that is, one side of the coupling portion 8. The spring 5 is wound around the space between the outer surface and one side of the facing wall 6 of the opening / closing body 4.
[0006]
However, in both of the conventional examples 1 and 2, since the opening / closing body 4 is loosely moved in the left-right direction with respect to the connecting portion 8 and the spring 5 is in contact with the inner surface of the opposing wall 6 of the rotating opening / closing body 4, There is also a possibility of causing a rotation failure while repeating the rotation.
[0007]
Further, when a tensile load is applied by the connected object, particularly when the opening / closing body 4 closes the opening 3, the rotation tip of the opening / closing body 4 and the other end of the opening 3 are engaged. If a load is applied to the pivot shaft 7, the pivot shaft 7 may be bent (distorted) because one load is applied to the installed pivot shaft 7, and the bending of the pivot shaft 7 causes the opening / closing body 4 to bend. Rotation failure may occur.
[0008]
Further, in the conventional example 1, since two springs are used, the cost is increased accordingly, and the manufacture is also troublesome.
[0009]
On the other hand, in Conventional Example 2, there is only one spring, but since the shaft is attached at a position according to one side, the rotational stability is poor, and the spring on one side may be in contact with the side wall surface. It may cause malfunction.
[0010]
The present invention finds such a problem in the conventional structure, solves this with a simple structure, and makes it difficult to cause a rotation failure compared to the conventional example, and the durability is dramatically improved more easily than the conventional example. It is an object of the present invention to provide an epoch-making connecting ring having a pivoting structure.
[0011]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0012]
An opening / closing body 4 is pivotally attached to one end portion of the opening 3 of the ring base 2 through which the connection object 1 enters and exits, and the opening 3 is closed so as to be freely opened and closed, and a spring that biases the opening / closing body 4 in the closing direction. 5, the opening / closing body 4 is rotated inward to open the opening 3 and the connection object 1 is moved into and out of the ring base 2. the hinged structure of the base end of the closing member 4, a connecting portion 8 provided at one end portion of the opening 3 in the pivot shaft 7 which is bridged between the opposed walls 6 provided on the base end portion of the closing member 4 axes The connecting portion 8 is provided with a notch portion 9 that is not attached to the pivot shaft 7 at the center, and the left and right positions of the connecting portion 8 are axially attached to the pivot shaft 7. a structure provided with the spring 5 to the pivot shaft 7 is located in the notch 9, the closing member 4 constitutes the U-shaped cross section, one end portion of the opening 3, The connecting portion 8 disposed between the opposing walls 6 of the base end portion of the open / close body 4 having a U-shaped cross section is formed, and the distal end portion of the connecting portion 8 is provided in a recessed state to form the notch portion 9. A shaft hole 10 through which the pivot shaft 7 is inserted is provided in the distal left and right convex portion 8A of the connecting portion 8, and the pivot shaft 7 is inserted into the shaft hole 10 of the distal left and right convex portion 8A at a position separated from the left and right. The pivot shaft 7 is installed between the opposing walls 6 so that the opening / closing body 4 is pivotally mounted, and is exposed between the left and right convex portions 8A of the front end by the notch 9. A spring 5 for urging the opening / closing body 4 in the closing direction is wound around the pivot shaft 7, and the rotation tip of the opening / closing body 4 and the other end of the opening 3 are the opening / closing body. 4 is configured to be engaged when the opening 3 is closed, and the interval between the notches 9 in the center of the connecting portion 8 is maintained when the connecting object 1 is pulled. In which the consolidated ring, characterized in that the concatenation of the distal lateral protrusion 8A formed in said right and left by the notch 9 of the connecting portion 8 by installing portion 12.
[0013]
Further, a base end portion of the opening / closing body 4 is pivotally attached to one end portion of the opening portion 3 of the C-shaped ring base body 2, and the opening portion of the C-shaped ring base body 2 is provided by the freely provided opening / closing body 4. 3 closed and the closing member 4 is biased in a direction to close the spring 5 against by the open the consolidated product 1 the opening 3 by rotating the closing member 4 inward said ring base 2 In the connecting ring configured to enter and exit, a pivot structure in which one end of the opening 3 and the base end of the opening / closing body 4 are pivoted between opposing walls 6 provided at the base end of the opening / closing body 4 is provided. A connecting portion 8 provided at one end of the opening 3 is attached to the shaft 7, and a notch 9 that is not attached to the pivot shaft 7 is provided at the center of the connecting portion 8. the spaced locations is configured to be pivotally attached to each said pivot shaft 7, a structure provided with the spring 5 to the pivot shaft 7 is located in the cutout portion 9, structure of the closing member 4 in a U-shaped cross section The opening 3 is formed at one end thereof with the connecting portion 8 disposed between the opposing walls 6 at the base end of the opening / closing body 4 having a U-shaped cross section. The notch portion 9 is provided in a recessed state, and a shaft hole 10 through which the pivot shaft 7 is inserted is provided in the distal left and right convex portion 8A of the connecting portion 8 so that the distal left and right convex portions at positions separated from each other are provided. The pivot shaft 7 is inserted into the shaft hole 10 of the portion 8A, and the pivot shaft 7 is installed between the opposing walls 6 so that the opening / closing body 4 is pivotally mounted. The pivot shaft 7 that is exposed between the convex portions 8A has a structure in which a spring 5 that urges the opening / closing body 4 in the closing direction is wound around the pivot shaft 7, The other end of the opening 3 is configured to be engaged when the opening 3 of the opening / closing body 4 is closed. To hold the notch 9 spacing parts, in which the consolidated ring, characterized in that the distal lateral protrusion 8A formed in the left and right was ligated with installing portion 12 by the notch 9 of the connecting portion 8 .
[0014]
Further, on the left and right outer surfaces of the connecting portion 8, there are provided minute projections 11 that prevent the opening / closing body 4 or the connecting portion 8 from moving slightly to the left and right and make the friction when the opening / closing body 4 is rotated minute. It concerns on the connection ring of any one of Claim 1, 2 characterized by these.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention (how to carry out the invention) considered to be suitable will be briefly described with reference to the drawings, showing its effects.
[0016]
An opening / closing body 4 is pivotally attached to one end of the opening 3 of the ring base body 2 through which the connection object 1 is put in and out, and one end of the opening 3 of the connection ring and the opening / closing body 4 are closed. of the hinged structure between the proximal end, and pivotally connecting portion 8 provided on the other to the pivot shaft 7 which is bridged between the opposed walls 6 provided on one, the pivot axis is at the center of the connecting portion 8 7 is provided with a notch portion 9 that is not pivotally attached to the connecting portion 8 so as to be pivotally attached to the pivot shaft 7. The spring 5 is attached to the pivot shaft 7 that is located at the notch portion 9. The configuration is provided.
[0017]
Accordingly, since the connecting portion 8 is pivotally attached to the pivot shaft 7 at positions separated from each other in the left and right directions, the opening and closing body 4 is not easily moved back and forth in the right and left directions, and at least the center of the pivot shaft 7 is also against a tensile load. Since it is pivotally mounted at a position separated from the left and right instead of one point, even if a pulling force is applied to the pivot shaft 7 via the connecting portion 8, the pivot shaft 7 is difficult to bend unless a load is applied until shearing. The structure is not easily distorted.
[0018]
Further, by using the notch portion 9 of the connecting portion 8 having a shaft attachment structure (left and right support structure) separated from each other in the left and right directions, the spring 5 is disposed on the pivot shaft 7 in the notch portion 9 so that the spring 5 is rotated. The rotating surface of the opening / closing body 4 and the spring 5 are not in contact with each other, so that the rotating contact can be extremely reduced, and rotation failure is unlikely to occur.
[0019]
Therefore, it is easy to manufacture with a simple structure and excellent in mass productivity. Further, compared with the conventional example, it is less likely to be loosely moved, the pivot shaft 7 is less likely to be distorted due to a tensile load, and the upper spring is the rotation of the opening / closing body 4. Since it does not come into contact with the moving surface, it is difficult to cause a rotation failure such that it is difficult to rotate, the spring biasing does not work well, and the opening / closing body 4 does not return to the closed position. It becomes the structure which improves further from an example.
[0020]
【Example】
Specific embodiments of the present invention will be described with reference to the drawings.
[0021]
In the present embodiment, the connecting portion 8 provided at one end of the opening 3 is attached to the pivot shaft 7 provided between the opposing walls 6 provided in the opening / closing body 4. That is, the opening / closing body 4 is formed in a U-shaped cross section (channel shape), and the opening 3 is provided at one end of the opening 3 with a gap between the opposing walls 6 at the base end of the opening / closing body 4. A connecting portion 8 having a thickness to be engaged is formed, a shaft hole 10 is provided in the connecting portion 8, the pivot shaft 7 is inserted into the shaft hole 10, and the pivot shaft 7 is inserted between the opposing walls 6. The construction is such that the opening / closing body 4 is pivotally mounted.
[0022]
In this embodiment, in such a pivot attachment structure, the distal end portion of the connecting portion 8 is provided in a recessed state to provide a notch portion 9, and the right and left convex portions 8 A of the connecting portion 8 are pivoted on the pivot shaft 7. A structure in which a spring 5 that biases the opening / closing body 4 in the closing direction is wound around the pivot shaft 7 that is exposed between the left and right protrusions 8A of the tip by the notch 9. Yes.
[0023]
Further, in the present embodiment, as shown in enlarged view in FIG. 3, the left and right outer surfaces of the connecting portion 8, and prevents rattling fine movement to the left and right of the opening-and-closing member 4 or the connecting portion 8, and the rotation of the closing member 4 A minute projection 11 is provided to reduce the friction at the time.
[0024]
Further, as shown in FIG. 4, the rotation tip of the opening / closing body 4 and the other end of the opening 3 may be hooked and engaged when the opening 3 of the opening / closing body 4 is closed. Although the tensile load due to the connection object 1 is likely to be applied to the pivot shaft 7, in this embodiment, the pivot shaft 7 is less likely to be distorted because the pivot shaft 7 is pivoted at positions separated from each other. A force acts to narrow the interval between the notches 9 in the central portion of the connecting portion 8 at the time of a tensile load. In this embodiment, the front left and right convex portions 8A formed on the left and right by the notched portions 9 of the connecting portion 8 are provided. It connects with the construction part 12, and is reinforced so that the space | interval of the notch part 9 can be hold | maintained even if tensile load is added.
[0025]
【The invention's effect】
Since the present invention is configured as described above, it has a structure that is less likely to cause a rotation failure than the conventional example, and an epoch-making connecting ring that has a pivoted structure that can easily improve durability compared to the conventional example. Become.
[0026]
That is, since the connecting portion is pivotally attached to the pivot shaft at a position separated from the left and right, it is difficult for the opening and closing body to be slightly rattled to the left and right, and it is not at least one central point of the pivot shaft against a tensile load. Since the shafts are attached at positions separated from each other on the left and right, even if a tensile force is applied to the pivot shaft through the connecting portion, the pivot shaft is unlikely to bend and is not easily distorted unless a load until shearing is applied.
[0027]
In addition, since the spring is disposed on the pivot shaft in the notch portion using the notch portion of the connecting portion which is a left and right shaft attachment structure (left and right support structure), the rotating opening and closing body and the spring are There is no contact, and the pivoting structure is such that the rotational contact can be extremely reduced and rotation failure is unlikely to occur.
[0028]
Therefore, it is easy to manufacture with a simple structure and excellent in mass productivity, and is less susceptible to backlash and fine movement than the conventional example, the pivot shaft is less likely to be distorted by a tensile load, and the upper spring is the rotation surface of the opening / closing body. Rotation is difficult to occur, such as it is difficult to rotate, the spring bias does not work well, and the opening / closing body does not return to the closed position. It becomes an improved connecting ring.
[0029]
Further, in this onset bright, the opening and closing member configured to U-shaped cross section, one end portion of the opening portion is disposed on the opposite walls of the proximal end portion of the U-shaped cross section of the opening and closing member The connecting portion is formed, the tip portion of the connecting portion is provided in a recessed state, the notch portion is provided, and the shaft hole through which the pivot shaft is inserted is provided in the left and right convex portions of the connecting portion. The pivot shaft is inserted into the shaft hole of the distal left and right convex portion at a spaced position, the pivot shaft is installed between the opposing walls, and the opening / closing body is pivoted. the pivot shaft has an exposed state between the left and right protrusions, because I a spring for biasing the closing member in the closed direction disposed winding, very the present invention can be easily realized by one layer simple structure It becomes a linkage ring with excellent practicality.
[0030]
Further, in the present invention, the rotation tip of the opening / closing body and the other end of the opening are engaged when the opening of the opening / closing body is closed, and the center of the connection is at the time of a tensile load by the connection object. In order to maintain the notch spacing of the connecting portion, the left and right convex portions formed at the left and right by the notched portion of the connecting portion are connected by the erection portion, so that the rotating tip of the opening / closing body and the other end of the opening Even when the opening of the opening / closing body is closed, it is possible to prevent the interval between the notches at the center of the connecting portion from being narrowed at the time of a tensile load caused by the connected object and to maintain the interval between the notches. The connection ring is stronger in terms of tensile strength and excellent in durability.
[0031]
In the invention of claim 3 Symbol placement, it becomes more difficult to occur rattling fine movement of the opening and closing of the left and right coupling ring was soo that can be extremely reduced even its exceeded dynamic resistance.
[Brief description of the drawings]
FIG. 1 is an explanatory front view of the present embodiment.
FIG. 2 is an explanatory plan sectional view of the present embodiment.
FIG. 3 is an enlarged plan sectional view illustrating a main part of the embodiment.
FIG. 4 is an explanatory front view of an example in which the rotating front end of the opening / closing body of the present embodiment and the other end of the opening are engaged when the opening of the opening / closing body is closed; FIG.
FIG. 5 is an explanatory enlarged plan view of a main part showing a conventional example 1;
FIG. 6 is an explanatory enlarged plan view of a main part showing a conventional example 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connection thing 2 Ring base | substrate 3 Opening part 4 Opening / closing body 5 Spring 6 Opposite wall 7 Pivoting shaft 8 Connection part 8A Tip left-right recessed part 9 Notch part
10 shaft hole
11 Microprotrusions
12 Construction section

Claims (3)

An opening / closing body is pivotally attached to one end portion of the opening portion of the ring base body through which the connected object enters and exits, so that the opening portion can be freely opened / closed, and the opening / closing body is resisted by a spring biased in the closing direction. In a connecting ring configured to open the opening and allow the connected object to enter and exit the ring base, and a pivoting structure between one end of the opening and the base end of the opening / closing body. A connecting portion provided at one end of the opening is pivotally attached to a pivot shaft provided between opposing walls provided at the base end portion of the opening / closing body, and is not pivotally attached to the pivot shaft at the center of the coupling portion. provided notch is configured to be pivotally attached to left and right spaced locations of the connecting portion on each said pivot axis, a structure provided with the spring to pivot axis is located in the cutout portion, cross the closing body It is configured in a U shape, and is disposed between the opposing walls of the base end portion of the opening / closing body having a U shape in cross section at one end portion of the opening. The connecting portion is formed, the distal end portion of the connecting portion is provided in a recessed state, the cutout portion is provided, and the shaft hole through which the pivot shaft is inserted is provided in the left and right convex portions of the connecting portion, and left and right separated The pivot shaft is inserted into the shaft hole of the tip left and right convex portion at the position, the pivot shaft is installed between the opposing walls, and the opening / closing body is pivoted. The pivot shaft, which is exposed between the convex portions, has a structure in which a spring that biases the opening / closing body in the closing direction is wound around the pivot shaft, and the opening tip of the opening / closing body and the opening An end is engaged when the opening of the opening / closing body is closed, and is formed on the left and right by the notch portion of the connecting portion in order to maintain a notch interval at the center portion of the connecting portion when a tensile load is applied by the connecting object. A connecting ring characterized in that the projected left and right convex portions are connected by an erection portion . A base end portion of an opening / closing body is pivotally attached to one end portion of an opening of the C-shaped ring base, and the opening of the C-shaped ring base is closed with the pivotable opening / closing body. in connection rings configured to and out the by rotating the closing member inwardly against the spring biases the open consolidated product said opening into said endocyclic base for closing said opening A pivot joint structure between one end of the opening / closing body and the base end of the opening / closing body, and a connecting portion provided at one end of the opening is pivotally attached to a pivot shaft provided between opposing walls provided at the base end of the opening / closing body , A notch portion that is not pivotally attached to the pivot shaft is provided in the center of the joint portion, and the left and right separated positions of the joint portion are pivotally attached to the pivot shaft, respectively. the spring arrangement and to which is provided on, the opening and closing member configured to U-shaped cross section, at one end of the opening of the proximal end portion of the U-shaped cross section of the opening and closing member The connecting portion disposed between the opposing walls is formed, the distal end portion of the connecting portion is provided in a recessed state, the notched portion is provided, and the pivot shaft is inserted into the left and right convex portions of the distal end of the connecting portion. A structure in which the opening / closing body is pivotally mounted by inserting the pivot shaft into the shaft hole of the left / right convex portion of the tip at a position separated from the left and right, and by laying the pivot shaft between the opposing walls. And a spring for urging the opening / closing body in the closing direction is wound around the pivot shaft that is exposed between the left and right convex portions at the front end by the notch, and the opening / closing body is rotated. This moving tip and the other end of the opening are engaged when the opening of the opening / closing body is closed, and this connection is maintained in order to maintain the notch spacing at the center of the connection when a tensile load is applied by the connection. characterized in that connected by installing portion the leading lateral projections formed on the left and right by the notch parts Connecting ring. The left and right outer surfaces of the connecting portion, claim to prevent rattling fine movement to the left and right of the opening and closing member or connecting portion, and the friction during the rotation of the closing body, characterized in that a minute projection to micro 1 The linking ring according to any one of 1 and 2 .

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