Slide-detachable hook

Abstract

The objective of the present invention is to provide a one-touch attachable / detachable hook that can be attached smoothly when being attached and also removed smoothly when being detached. The hook has: a hook body having a hook base part and a hook key part bent from and continuous with the hook base part; and an opening / closing lever coupled at one end via a rotational center part installed in the hook base part, the opening / closing lever being rotationally biased in the direction of a contact point set on the hook key part. The opening / closing lever, which has a bent part, is rotated by causing an opening / closing lever extension part curved beyond the bent part to cross the hook base part.

Description

Slide-on / slide-off hook

[0001] The present disclosure relates to hooks used in various places in household goods, industrial goods, sports and leisure goods, and office supplies.

[0002] Conventionally, spring hooks represented by carabiners have been used as hooks for daily life, outdoor activities, and sports. Many inventions have been made to make hooks with a carabiner structure easier, faster, or safer to use for the purpose of hanging nearby objects.

[0003] For example, in Patent Document 1, the return link spring housed in the lever rod has a sliding contact end at the other end that slides on a spring receiving surface that is a curved concave surface, making the included angle outside the groove formed by the sliding contact end and the spring receiving surface an obtuse angle so that the return link spring is less likely to fall out of the locking groove. As a result, it is a carabiner with a wide passing width of the insertion member that allows the lever portion to rotate up to about 90 degrees, which is easy to use.

[0004] Japanese Unexamined Patent Application Publication No. 2016-006342

[0005] However, although the invention of Document 1 can widen the opening part, the difficulties associated with the use of conventional carabiners still remain regarding removal. For example, it is difficult to remove it with one hand, and even if both hands are used, when the lever rod of the hook is tilted inward, the hanging rod may get caught, the finger pressing the lever rod may interfere with the removal of the hanging rod, or the finger may be sandwiched between the lever rod and the carabiner body.

[0006] An object of the present disclosure is to provide a hook that can be smoothly attached and detached.

[0007] The slide-detachable hook of the present disclosure comprises a hook body having a hook base and a hook key portion bent and connected from the hook base, and an opening / closing lever with one end connected via a rotating center installed on the hook base, wherein the opening / closing lever is rotationally biased in the direction of a contact point set on the hook key portion, and the opening / closing lever having a bent portion comprises an opening / closing lever extension portion beyond the bent portion, and the opening / closing lever extension portion is curved toward the hook base and rotates intersecting with the hook base.

[0008] The slide-type detachable hook of this disclosure allows for smooth, one-touch attachment and detachment of the hook.

[0009] This is a reference perspective view of the hook that forms the basis of this disclosure. Figures 2A to 2C are reference plan views illustrating how the hook that forms the basis of this disclosure is used and the specifications of the opening / closing lever. Figure 2A shows the state in which the hanging rod and the hook are close together, Figure 2B shows the state in which the hook is being hung on the hanging rod, and Figure 2C shows the state when the hook is hung on the hanging rod, or when attempting to remove the hook from the hanging rod. This is a plan view of the first embodiment for illustrating the specifications of the opening / closing lever of this disclosure. This is a plan view of the second embodiment illustrating how the hook of this disclosure is used. This is a perspective view of the hook of the third embodiment of this disclosure. This is a perspective view of the hook of the fourth embodiment of this disclosure.

[0010] Hereinafter, an embodiment of the slide-attachable hook of this disclosure will be described with reference to the drawings.

[0011] Figure 1 is a reference perspective view of the hook 1 on which this disclosure is based. The hook 1 consists of a hook body 2 and an opening / closing lever 5. The hook body 2 consists of a hook base 3 and a hook lock portion 4 that is bent and connected to the hook base 3. In the drawings of the following embodiments, descriptions of the hook body 2, hook base 3, and hook lock portion 4 have been omitted to avoid complexity, but the configuration of the hook body is the same.

[0012] The opening / closing lever 5 has one end connected to the hook base 3 at the center of rotation 8. The center of rotation 8 is the rotation center of the entire opening / closing lever 5. The opening / closing lever 5 bends near the center from the center of rotation 8 to the tip 54 of the opening / closing lever, and when the opening / closing lever 5 is closed, the contour of the bent portion 53 contacts the inner circumference of the hook key portion 4 at the contact point 6. The portion of the opening / closing lever 5 from the center of rotation 8 to the contact point 6 is called the opening / closing lever base 51, and the portion from the contact point 6 to the tip 54 of the opening / closing lever is called the opening / closing lever extension 52. The opening / closing lever 5 is biased to rotate in the closing direction by a leaf spring 71 installed at the center of rotation 8.

[0013] The contact point 6 between the bent portion 53 of the opening / closing lever 5 and the hook key portion 4 does not necessarily have to be a point contact; it may be a surface contact, or it may be a snap-fit ​​type contact that fixes the position of the opening / closing lever 5 when it is closed.

[0014] A slit 9 is provided in the hook base 3, allowing the opening / closing lever extension 52 to pass through. The opening / closing lever extension 52 passes through the slit 9 and protrudes to the outside of the hook base 3. The slit 9 allows the opening / closing lever 5, which intersects the hook base 3, to rotate freely, and also serves as a rotation guide for the opening / closing lever 5.

[0015] The tip 54 of the opening / closing lever may always protrude through the slit 9 and extend to the outside of the hook 1. On the other hand, when the bent portion 53 is in contact with the contact point 6, if the tip 54 of the opening / closing lever is inside the slit of the hook base, the effect is that the protrusion of the opening / closing lever extension is not noticeable except when opening or closing.

[0016] The opening / closing lever 5 does not need to be in the shape of a square or round bar, as long as it has the functions described above. It may be in the shape of a plate, a grid, or composed of multiple wires, or a combination of these. The material should preferably be one that is resistant to deformation.

[0017] The spring 7, which is attached near the center of rotation 8 and biases the opening / closing lever 5 in the closing direction, is not limited to a leaf spring, but may be a coil spring, torsion spring, wire spring, or shape memory alloy spring, etc.

[0018] In Figure 1, a slit is made in the hook base 3 to allow the opening / closing lever extension 52 to pass through. However, a space equivalent to a slit can be provided in the opening / closing lever extension, and the hook base 3 can be passed through it to avoid restricting the movement of the rotating lever when opening and closing.

[0019] The head of the hook base 3 is provided with a string-threading hole 20 for attaching a strap or rope. The head of the hook base 3 is not limited to the string-threading hole 20 shown in Figure 1; other attachments may be made to assist the function of the hook body, or to have functions or decorations different from the function of the hook body. Alternatively, nothing may be attached at all. In other words, the hook 1 may be modified to suit the intended use or the user's preferences to make it easier to use.

[0020] Figures 2A to 2C are reference plan views of the hook that forms the basis of this disclosure, illustrating how the hook is used. In the following explanation, the object to which the hook is attached is a rod-shaped hanging rod 10, and a cross-sectional view of the hanging rod 10 is inserted in the figures. Figure 2A shows the hook 1 being attached to the hanging rod 10, or the hook 1 being removed from the hanging rod 10. Figure 2B shows the hanging rod 10 passing through the opening / closing lever 5. Figure 2C shows the hook 1 being attached to the hanging rod 10, or the hook 1 being removed from the hanging rod 10.

[0021] When hooking hook 1 onto the hanging rod 10, hook 1 is slid and moved so that the hanging rod 10 moves relative to it in the direction of the arrow in Figure 2A. In this way, the relative positions of hook 1 and the hanging rod 10 change in the order of Figures 2A, 2B, and 2C, and hook 1 is hooked onto the hanging rod 10. Initially, the base 51 of the opening / closing lever 5, which was in contact with the contact 6, receives pressure from the hanging rod 10, causing the opening / closing lever 5 to start rotating and move away from the contact 6. Eventually, as shown in Figure 2B, the gap between the contact 6 and the opening / closing lever 5 becomes wide enough for the hanging rod 10 to pass through, and the hanging rod 10 enters hook 1. Once the hanging rod 10 passes the bent portion 53, the force of the spring 7 causes the opening / closing lever 5 to rotate back in the opposite closing direction until it contacts the contact 6, resulting in the state shown in Figure 2C.

[0022] Conversely, to detach the hook 1 from the hanging rod 10, the hook 1 is slid and moved so that the hanging rod 10 moves relative to it in the direction of the arrow in Figure 2C. By doing so, the relative positions of the hook 1 and the hanging rod 10 change in the order of Figures 2C, 2B, and 2A, and the hook 1 is detached from the hanging rod 10. Initially, the opening / closing lever extension 52 of the opening / closing lever 5, which was in contact with the contact 6, receives pressure from the hanging rod 10 and the entire opening / closing lever 5 begins to rotate, causing the opening / closing lever 5 to move away from the contact 6. Eventually, as shown in Figure 2B, the gap between the contact 6 and the opening / closing lever 5 becomes large enough for the hanging rod 10 to pass through, and the hanging rod 10 passes through the bent portion 53. After the hanging rod 10 has passed through the bent portion 53, the force of the spring 7 causes the opening / closing lever 5 to rotate back in the closing direction until it contacts the contact 6, resulting in the state shown in Figure 2A.

[0023] As described above, the hook 1 can be easily and quickly attached or detached simply by sliding it in one direction, without having to press the opening / closing lever 5 with your finger to spread it open. Since the opening / closing lever 5 only needs to be slid in a specific direction, it can be easily and quickly attached and detached with one hand.

[0024] Figure 3 is a plan view of the first embodiment of the present disclosure, and is a plan view showing the specifications of the opening / closing lever 5. In this embodiment, the opening / closing lever extension 52 is curved. By curving it, the storage range of the hanging rod 10 within the hook lock part is widened, and a large-diameter hanging rod 10 can be hung.

[0025] However, depending on the curvature, the opening / closing lever 5 may not move even if you try to slide the hook 1 to remove it.

[0026] The dashed line A is a radius line passing through the center of rotation and an arbitrary point 41 on the outer circumference of the outline of the opening / closing lever extension 52. The dashed line B is the tangent to the outer circumference at the aforementioned arbitrary point 41. If the angle formed by radius line A and tangent line B, and the angle facing the hook base side, is taken as the tangent angle β, then if the tangent angle β is 90 degrees or less, the opening / closing lever 5 will not move even if you try to slide the hook 1 to remove it. It has been found that even if the opening / closing lever extension 52 is pressed in the removal direction by the hanging rod 10, if the tangent angle β is 90 degrees or less, a rotational moment in the closing direction, opposite to the opening direction, is generated in the opening / closing lever 5.

[0027] The tangent angle β may be approximately the same at any point on the outer edge of the opening / closing lever extension 52, or it may vary at each arbitrary point 41, but at any arbitrary point, the angle must be 90 degrees or greater.

[0028] If the extension portion 52 of the opening / closing lever is roughly a straight line as shown in Figure 2A, then the bending angle α of the opening / closing lever at the bent portion 53 should be 90 degrees or more. This is because if the bending angle α is 90 degrees or more, the tangent angle β will be obtuse at any other arbitrary point on the extension portion 52 of the opening / closing lever, and the opening / closing lever 5 will open smoothly.

[0029] Furthermore, it has been discovered that the force required to move the opening / closing lever 5 can be adjusted not only by the elastic force of the spring, but also by changing the tangent angle β. In other words, if an opening / closing lever is provided that has the same tangent angle β of 90 degrees or more at any arbitrary point along the outer circumference of the opening / closing lever extension 52, a small tangent angle β results in a hook that is difficult to remove, that is, does not come off easily, while a large tangent angle β results in a hook that is easy to remove, that is, easy to detach.

[0030] In Figure 3, a knob 30 is attached to the tip of the opening / closing lever 5. The opening / closing lever 5 can be opened by pulling the knob 30. For example, in the case of a string that cannot be pressed firmly on the opening / closing lever 5, or a flimsy hanging rod 10, the opening / closing lever 5 can be opened by pulling the knob 30, and the string or hanging rod 10 can be hung there. The same applies when removing the string.

[0031] By appropriately shaping and attaching the knob, it is possible to hold the hook body of this disclosure with one hand and pull the knob with the fingers of the same hand. Alternatively, instead of the knob 30, the protruding portion of the opening / closing lever extension 52 from the hook body 2 may be made longer to provide the above-mentioned knob function.

[0032] Figure 4 is a plan view of a carabiner-type hook according to a second embodiment of the present disclosure, illustrating how the hook is used. In the carabiner-type hook, the end of the hook base 3 curves toward the end of the hook lock portion 4 to form a rotation center 8, which is connected to the opening / closing lever 5. Although not shown in the figure, a spring is installed in the rotation center 8 that always acts in the direction of closing the opening / closing lever.

[0033] The opening / closing lever 5, connected to the rotating center 8, curves significantly toward the hook base 3 at the position of the contact 6 at the tip of the hook lock part 4, and is structured to pass through the slit 9 installed in the hook base 3 and rotate freely.

[0034] The hanging rod 10a indicates the position when the hook 1 is attached to the hanging rod 10 or when the hook 1 is detached from the hanging rod 10. The hanging rod 10b, shown by the dotted line, indicates the position when the hanging rod 10 passes the opening / closing lever 5 of the hook 1. The hanging rod 10c indicates the position when the hook 1 is attached to the hanging rod 10 or when attempting to remove the hook 1 from the hanging rod 10. The actions and functions of the hanging rod, hook body, and opening / closing lever when attaching and detaching the hook to the hanging rod 10 are the same as those described in Figures 2A to 2C, so they are omitted here.

[0035] In Figure 4, the dashed line A is a radius line passing through the center of rotation and an arbitrary point 41 on the outer edge of the opening / closing lever extension 52, and the dashed line B is a tangent to the outer circumference of the opening / closing lever extension 52 at the aforementioned arbitrary point 41. If the angle formed by radius line A and tangent line B that faces the hook base is called the tangent angle β, then if the tangent angle β is 90 degrees or more, smooth removal is possible. The same principle as in Example 1 is at work in Example 2.

[0036] The tangent angle β may be approximately the same at any point on the outer edge of the opening / closing lever extension 52, or it may be varied at each arbitrary point 41, but at any arbitrary point, it must be an obtuse angle.

[0037] Furthermore, as in the first embodiment, the force required to move the opening / closing lever 5 can be adjusted by changing the tangent angle β. In other words, if an opening / closing lever is provided that has the same tangent angle β of 90 degrees or more at any arbitrary point along the outer circumference of the extension of the opening / closing lever, a small tangent angle β results in a hook that is difficult to remove, that is, does not come off easily, while a large tangent angle β results in a hook that is easy to remove, that is, easy to detach.

[0038] Figure 5 is a perspective view of a hook according to a third embodiment of the present disclosure. In Figure 5, the opening and closing lever is made of a wire spring 73. A single spring wire is bent to form a wire spring with a pair of legs. The ends of the pair of legs are bent at alternating positions, and the tips are bent into a key shape to form a bent terminal 74. The bent terminal 74 is inserted into and fixed into a pair of insertion holes 81 that form the rotation center of the hook base. The pair of insertion holes 81 are set up offset from each other so that the hole axes do not overlap. When the hook is viewed in plan, the pair of insertion holes are set up in offset positions that are relatively close together.

[0039] In this type of wire spring, the two insertion holes 81 at the base of the wire spring are the centers of rotation, so there is no single axis of rotation. The bent terminals 74 of the wire spring 73 are forcibly inserted into the small holes located at offset positions on both sides of the hook base 3, and the elasticity of the wire spring 73, which tries to eliminate the strain, becomes the force that closes the opening / closing lever 5. In this disclosure, the term "axis of rotation" or "center of rotation" is used to refer to a rotation center that has multiple centers of rotation at such offset positions and behaves as if it were a single axis of rotation.

[0040] Furthermore, the wire spring in Figure 5 may be used only at the base of the opening / closing lever, or the entire opening / closing lever may be made of wire springs with a pair of legs attached as reinforcing members at the bent parts, etc.

[0041] Figure 6 is a perspective view of the fourth embodiment of the present disclosure. A similar leaf spring to that of FIG. 5 is used, but the opening / closing lever extension 52 is different. The extensions of the opening / closing lever 5 divided into two cross both sides of the hook base 4 and meet at the tip 54 of the opening / closing lever. By adopting such a structure, there is an effect that there is no hindrance to the rotation of the opening / closing lever when opening and closing. In such a form, the hook base serves as a rotation guide for the opening / closing lever.

[0042] Although the embodiments of the present disclosure have been described in detail above, the present disclosure is not limited to the above-described embodiments, and various changes and improvements are possible within the scope not departing from the gist of the present disclosure. Needless to say, all or part of each of the above embodiments can be combined as appropriate within a non-contradictory range.

[0043] The backpack according to the present disclosure can be implemented in the following aspects (1) to (6).

[0044] (1) A hook body having a hook base and a hook key portion bent and continuous from the hook base, and an opening / closing lever having one end connected via a rotation center portion provided on the hook base, wherein the opening / closing lever is rotationally biased in the direction of a contact point set on the hook key portion. In the hook, the opening / closing lever having a bent portion rotates by crossing the opening / closing lever extension portion after the bent portion and the hook base, and is characterized by a slide-on / slide-off hook.

[0045] (2) The slide-on / slide-off hook according to the above configuration (1), wherein when the opening / closing lever extension portion and the hook base cross and rotate, the opening / closing lever extension portion passes through the slit provided in the hook base or both sides of the hook base.

[0046] (3) The slide-on / slide-off hook according to the above configuration (2), wherein when the opening / closing lever abuts on the contact point, the tip of the opening / closing lever extension portion is within the slit.

[0047] (4) The slide-on / slide-off hook according to the above configuration (2), wherein the tip of the opening / closing lever extension portion is always located outside the hook body.

[0048] (5) The slide-detachable hook according to the above configuration (4), wherein a knob is installed at the tip of the opening / closing lever extension part.

[0049] (6) Among the angles formed by a radius line passing through an arbitrary point on the contour of the rotation center part and the opening / closing lever extension part and a tangent line to the contour at the arbitrary point, if the angle on the side facing the hook base is defined as the tangent angle β, the tangent angle β is 90 degrees or more. The slide-detachable hook according to the above configuration (1) or (2). (7) When the opening / closing lever is in contact with the contact point, at all arbitrary points on the contour of the opening / closing lever extension part on the closed loop formed by the hook body and the opening / closing lever extension part, excluding the bent part, the tangent angle β is substantially constant. The slide-detachable hook according to the above configuration (6).

[0050] 1 Hook 2 Hook body 3 Hook base 4 Hook key part 5 Opening / closing lever 51 Opening / closing lever base 52 Opening / closing lever extension part 53 Bent part 54 Opening / closing lever tip part 6 Contact point 7 Spring 8 Rotation center part 9 Slit 10 Hanging rod 20 String passing hole 30 Knob 40 Intersection point between the outer contour of the opening / closing lever extension part and the inner contour of the hook back 41 Arbitrary point on the outer contour of the opening / closing lever extension part 71 Plate spring 72 Torsion spring 73 Wire spring 74 Bent terminal 81 Insertion hole α Bent angle of the opening / closing lever β Tangent angle

Claims

1. A hook comprising a hook body having a hook base and a hook key portion bent and connected from the hook base, and an opening / closing lever with one end connected via a rotating center installed on the hook base, wherein the opening / closing lever is rotationally biased in the direction of a contact point set on the hook key portion, characterized in that the opening / closing lever having a bent portion is provided with an opening / closing lever extension portion beyond the bent portion, and the opening / closing lever extension portion is curved toward the hook base and rotates intersecting with the hook base.

2. The slide-on / off hook according to claim 1, characterized in that when the opening / closing lever extension and the hook base intersect and rotate, the opening / closing lever extension passes through a slit provided in the hook base or on both sides of the hook base.

3. The slide-detachable hook according to claim 2, characterized in that, of the angles formed by the radius line passing through the center of rotation and an arbitrary point on the contour of the extension of the opening / closing lever and the tangent line to the contour at the arbitrary point, the angle facing the base of the hook is denoted as the tangent angle β, and the tangent angle β is obtuse.

4. The slide-detachable hook according to claim 3, characterized in that when the opening / closing lever is in contact with the contact point, the tangent angle β is approximately constant at all arbitrary points except the bent portion in the contour of the opening / closing lever extension on the closed loop formed by the hook body and the opening / closing lever extension.

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