Metal hook

Abstract

To provide a metal-made opening / closing-type hook tool.SOLUTION: In a metal-made hook tool 1 including a hook curved part 2 and a hook opening / closing bar 3, the hook opening / closing bar is rotatable with a rotating shaft 14 arranged at an upper apex part 18 of the hook curved part as a rotation center. When the hook opening / closing bar is locked to a shoulder part 4 while withstanding energization means, a band-shaped protrusion provided in a center of a shoulder surface and a band-shaped groove provided in a center part in a vertical direction of a surface of the hook opening / closing bar are engaged with each other, and then, the hook tool is brought into a release state by being locked by lock protrusions 15 at both sides provided at a lower end part of the band-shaped protrusion of the shoulder part and lock recesses 21 at both sides provided at the band-shaped groove of the hook opening / closing bar. When the hook opening / closing bar is energized by the energization means, the hook tool is brought into a closed state by a lock of a lower-end end part of the hook opening / closing bar and an opening end part, and the two lock protrusions at both sides of the band-shaped protrusion are provided at asymmetric positions.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a metal hook device. [Background technology]

[0002] An openable / closable hook device made of a flexible material has been produced (Patent Document 1). When a conventional hook device is attached to the handle of a stroller, for example, and a load is hung from the hook body, the load may come off the opening of the hook body and fall due to vibrations caused when the stroller is moving. Therefore, it is necessary to drive the stroller while being careful not to let the load hung from the hook body fall. The open-close type hook device described in Patent Document 1 is extremely convenient because the hook body can be closed after a load is hung on the hook, preventing the load from falling off. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2014 / 030402 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the open-close type hook device described in Patent Document 1 was made of a flexible material and was somewhat lacking in strength. The present inventors created an open-close type hook device with a similar structure. However, when opening the hook device, the engagement between the inner section and the outer section was not sufficient, making it difficult to maintain the open state. SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide an openable and closable hook device made of metal. [Means for solving the problem]

[0005] The inventors conducted extensive research into metal open-close hook devices and surprisingly discovered that by giving the locking protrusion that locks the hook open-close bar a specific shape, the hook open-close bar can be easily locked and the open state can be easily maintained. The present invention is based on these findings. Thus, the present invention provides [1] A metal hooking device including a hook curved portion and a hook opening / closing bar, the hook curved portion being composed of a shoulder portion and a lower curved portion, the hook opening / closing bar being rotatable about a rotation axis provided at the upper apex of the hook curved portion and being a rod-shaped body that can be attached and detached to the shoulder portion, the lower end of the hook opening / closing bar being a free end, the lower end of the hook opening / closing bar being urged by an urging means in the direction of the open end of the hook curved portion with the upper end as the rotation axis, and when the hook opening / closing bar engages with the shoulder portion against the urging means, the hook opening / closing bar is set at the center of the surface of the shoulder portion. a band-shaped protrusion at the shoulder engages with a band-shaped groove provided in the vertical center of the surface of the hook opening / closing bar, and is engaged with both locking protrusions provided at the lower end of the band-shaped protrusion at the shoulder and both locking recesses provided in the band-shaped groove of the hook opening / closing bar, so that the hook device is in an open state, and when the hook opening / closing bar is biased by the biasing means, the lower end of the hook opening / closing bar and the opening end are engaged, so that the hook device is in a closed state, and the two locking protrusions on both sides of the band-shaped protrusion are provided in asymmetrical positions. [2] The metal hook device according to [1], wherein the hook opening / closing bar has a release protrusion, and [3] The metal hook device according to [1], which has an engagement hole 9 at the lower tip 7 of the opening and closing bar 3 and an engagement protrusion 10 at the open end 8 of the hook curved portion 2; Regarding. Effect of the Invention

[0006] According to the metal hook device of the present invention, the openable / closable hook device can be easily maintained in an open state. [Brief description of the drawings]

[0007] [Figure 1] 1A and 1B are diagrams showing the transition state between the open and closed states of the metal hook device of the present invention. [Diagram 2] 1A is a right side view showing the closed state of the metal hook device of the present invention, and FIG. 1B is an enlarged view of the locking projection. [Diagram 3] FIG. 2 is a right side view showing the metal hook device of the present invention in an open state. [Figure 4] 1A is a left side view showing the metal hook device of the present invention in a closed state, and FIG. 1B is an enlarged view of a locking projection. [Diagram 5] FIG. 2A is a front view of the metal hook device of the present invention with the hook opening / closing bar removed, FIG. 2B is a diagram showing two locking protrusions on both sides of a band-shaped protrusion having a locking protrusion portion, and FIG. 2C is a diagram showing two locking protrusions on both sides of a band-shaped protrusion not having a locking protrusion portion. [Figure 6] FIG. 2 is a perspective view of the metal hook device of the present invention in a closed state. [Figure 7] 13 is a diagram showing a band-shaped groove and a locking recess of a hook opening / closing bar. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The metallic hooking device of the present invention is a metallic hooking device including a hook curved portion and a hook opening and closing bar, the hook curved portion is composed of a shoulder portion and a lower curved portion, the hook opening and closing bar is a rod-shaped body that can rotate around a rotation axis provided at the upper apex portion of the hook curved portion as a rotation center and is detachable from the shoulder portion, the lower end portion of the hook opening and closing bar is a free end portion, and the lower end portion of the hook opening and closing bar is urged by an urging means in the direction of the open end portion of the hook curved portion with the upper end portion as the rotation axis, and when the hook opening and closing bar engages with the shoulder portion against the urging means, When the hook opening / closing bar is biased by the biasing means, the lower end of the hook opening / closing bar and the opening end are engaged with each other, and the hook device is placed in an open state, and when the hook opening / closing bar is biased by the biasing means, the lower end of the hook opening / closing bar and the opening end are engaged, and the two locking protrusions on either side of the band-shaped protrusion engage with each other, and the hook device is placed in a closed state, and the two locking protrusions on either side of the band-shaped protrusion are provided in asymmetric positions.

[0009] Specific embodiments of the metallic hook device of the present invention will be described with reference to Figs. Fig. 1 is a diagram showing the transition state between the open state and the closed state of the metal hooking device of the present invention. Fig. 2 is a right side view showing the closed state of the metal hooking device of the present invention. Fig. 3 is a right side view showing the open state of the metal hooking device of the present invention. Fig. 4 is a left side view showing the closed state of the metal hooking device of the present invention. Fig. 5 is a diagram showing two locking protrusions on both sides of a band-shaped protrusion as seen from the front in the open state of the metal hooking device of the present invention. Fig. 6 is a perspective view of the closed state of the metal hooking device of the present invention.

[0010] The hook curved portion 2 has a lower half S-shape (the shape of the lower half of an S-shape), and as shown in FIG. 1, the hook curved portion upper apex 18 can be connected to, for example, a connecting means 19. The hook curved portion upper apex 18 of the hook curved portion 2 is located at a position corresponding to the midpoint of the S-shape, and is also the upper end of the hook curved portion 2. The hook curved portion 2 can hold and hang a hanging object at its lower curved portion 5, and has a hook space inside the lower half S-shaped hook curved portion 2. The hook curved portion 2 has an opening 20 between the hook curved portion upper apex 18 and the open end 8, and the hanging object can enter and exit through the opening 20. The position of the open end 8 corresponds to the end of the S-shape.

[0011] The hook curved portion 2 has a shoulder 4 adjacent to an upper apex 18 of the hook curved portion. In the open state shown in Fig. 3, the shoulder 4 and the opening / closing bar 3 overlap each other and become part of a semi-S-shaped external shape together with other regions of the hook curved portion 2, making the overall shape of the hook curved portion 2 a lower half-S-shape. Note that in this specification, the length of the shoulder 4 is required to be a length that closes the opening 20 in the closed state as shown in Fig. 3, for example, and depends on the length of the opening 20, so that it may reach an inclined region below the midpoint of the lower half-S shape (the shape of the lower half of the S shape).

[0012] The shoulder portion 4 is an area which is inseparable from the hook curved portion 2, and will not separate from the hook curved portion 305 even in the open state shown in Fig. 3. On the other hand, the opening and closing bar 3 is a rod-like body which is detachable from the shoulder portion 4, and its upper end portion 11 is rotatably fixed to the hook curved portion 2 by a rotation shaft 14 provided at an upper vertex portion 18 of the hook curved portion 2. The lower end portion 7 which is the opposite end portion of the opening and closing bar 3 is a free end portion.

[0013] For example, as shown in Figures 1 and 2, the shoulder portion 4 has a band-shaped protrusion 12 at the vertical center of the surface on the side of the opening and closing bar 3, and the opening and closing bar 3 has a band-shaped groove 13 at the center of the surface on the side of the shoulder portion 4 that can engage with the band-shaped protrusion 12, thereby making it possible to stably maintain the interlocking state between the shoulder portion 4 and the opening and closing bar 3.

[0014] The hook device is opened by being engaged by the locking protrusions 15, 16 on both sides of the band-shaped protrusion provided at the lower end of the band-shaped protrusion 12 on the shoulder portion, and by the locking recesses 21 on both sides of the band-shaped groove provided in the band-shaped groove 13 of the hook opening / closing bar. The two locking protrusions on both sides of the belt-shaped protrusion are provided at asymmetric positions when viewed from the front as shown in FIG. 5. The inventors have noticed that if the two locking protrusions on both sides are provided at symmetric positions when viewed from the front, it becomes difficult for the belt-shaped protrusion and the belt-shaped groove to engage with each other. The inventors have found that by providing the two locking protrusions on both sides at asymmetric positions, the belt-shaped protrusion and the belt-shaped groove can be easily engaged with each other. The misalignment 27 of the asymmetric locking protrusions on both sides shown in FIGS. 15B and C is not particularly limited as long as the centers of the protrusions do not coincide. The distance between the centers of the two locking protrusions is not limited because the larger the hook tool is, the longer the distance, and the smaller the hook tool is, the shorter the distance. For example, in the case of a hook tool used for a stroller, it is preferably 0.5 mm or more, more preferably 1 mm or more, even more preferably 1.5 mm or more, and even more preferably 2 mm or more. The upper limit of the misalignment between the asymmetrical locking projections on both sides is not particularly limited, but is 20 mm or less, preferably 15 mm or less, and more preferably 10 mm or less. The locking projection may be fixed, but is preferably configured to retract to the inside of the band-shaped projection when engaged. For example, a spring can be provided between the locking projection 15 (16) and the locking projection hole 15b (16b) on the opposite side, so that the locking projection 15 (16) retracts when engaged. The locking projections on both sides of the band-shaped projection may be one on each side (left and right) of the band-shaped projection, but may also have two or more locking projections. For example, as shown in Fig. 5(D), the locking projections and locking projection holes may be aligned in a straight line, the locking projections and locking projection holes may be aligned diagonally, or two locking projections and two locking projection holes may be aligned to form a square. The locking recess 21 for locking the locking protrusion may be in the form of a groove, as shown in the enlarged view of Fig. 7. The groove may be formed up to the lower end 7 as shown in the figure, but may also be formed to fit, for example, the locking protrusion 26. The locking projection may have a locking projection portion 26 as shown in FIG. 5(B), or may not have a locking projection portion as shown in FIG. 5(C).

[0015] When the hook opening / closing bar 3 is biased by the biasing means, the lower end 7 of the hook opening / closing bar and the opening end 8 are engaged, and the hook device is in a closed state. For example, the metal hook device 1 of the present invention preferably has a release protrusion 6 that can be operated with a fingertip. For example, when the opening / closing bar 3 is pulled out with a finger toward the opening using the release protrusion 6 provided on the side of the opening / closing bar 3, the engaged state is released, and the opening / closing bar 3 rotates like a pendulum due to the biasing means, and moves until the lower end 7 of the opening / closing bar 3 contacts the opening end 8 of the hook curved portion 2 and stops. In this way, the hook curved portion 2 is in a closed state. Even if the opening / closing bar 3 does not have the release protrusion 6, it can be closed by pinching both sides of the opening / closing bar 3 with fingers.

[0016] The metal hook device 1 of the present invention may have an interlocking hole 9 at the lower tip 7 of the opening / closing bar 3 and an interlocking projection 10 at the open end 8 of the curved hook portion 2 . By providing an interlocking hole 9 at the lower tip 7 and an interlocking protrusion 10 at the opening end 8 for the interlocking between the lower tip 7 of the opening bar 3 and the opening end 8 of the hook curved portion 2, the interlocking between the lower tip 7 and the opening end 8 can be maintained more stably.

[0017] The metal hook device 1 according to the present invention can be coupled to a hooking means 17. For example, as shown in FIG. 6, the metal hook device 1 can be detachably attached to a suspended body 22 by the hooking means 17. The suspended body 22 can be, for example, a rod-shaped body parallel or perpendicular to a horizontal plane (floor or ground), or a rod-shaped body inclined at any angle from the horizontal plane. The hooking means 17 is not limited as long as it can be hung on the suspended body 22, and a means used in a conventional hook device can be used as is. For example, as shown in FIG. 6, a combination of a belt part 23 with a hook-and-loop fastener and a mounting base part 24, or a combination of a belt part 23 with a hook-and-loop fastener, a mounting base part 24, and a connecting part 25 can be used. [Industrial Applicability]

[0018] The metal hook device of the present invention can be used for baby strollers, silver carts, or wheelchairs, or bicycle handles and frames (particularly inclined frames), pipes of various outdoor products (particularly inclined pipes for assembling tents), pipes of various logistics products (particularly inclined frames of dollies), and further pipes of various household items (e.g., balcony handrails and fences, clotheslines), beds in hospitals and lodging facilities, etc. Examples of objects to be wrapped around that have a large outer diameter include outdoor items such as garden planters, outdoor trash cans, and display panels. [Explanation of symbols]

[0019] 1. Hook tool; 2···Hook curved section; 3···Hook opening and closing bar; 4...Shoulder; 5···lower curvature; 6...Release protrusion; 7···Lower end; 8...open end; 9....Mating hole 9; 10...occlusal projection; 11...Top edge; 12···Cingulum; 13···Cingular sulcus; 14···axis of rotation; 15...locking protrusion; 15b...Protruding hole for locking; 16...locking protrusion; 16b...Protruding hole for locking; 17...locking means; 18 ···Upper apex of curved part of hook; 19...Connection means; 20···opening; 21...Latching recess 22... suspended body; 23... Belt section; 24···Mounting base part; 25...Connection part; 26...locking protrusion; 27. The locking protrusion is misaligned.

Claims

1. A metal hook device including a hook curved portion and a hook opening and closing bar, The hook curved portion is composed of a shoulder portion and a lower curved portion, the hook opening / closing bar is a rod-shaped body that can rotate about a rotation axis provided at an upper vertex of the hook curved portion and is detachable from the shoulder portion, The lower end of the hook opening and closing bar is a free end, The lower end of the hook opening / closing bar is biased by a biasing means in the direction of the open end of the hook curved portion with the upper end as a rotation axis, When the hook opening / closing bar engages with the shoulder against the biasing means, a band-shaped protrusion provided at the center of the surface of the shoulder engages with a band-shaped groove provided at the center in the vertical direction of the surface of the hook opening / closing bar, and the hook is engaged with both locking protrusions provided at the lower end of the band-shaped protrusion of the shoulder and both locking recesses provided in the band-shaped groove of the hook opening / closing bar, thereby opening the hook device; When the hook opening and closing bar is biased by the biasing means, the lower end of the hook opening and closing bar and the opening end are engaged with each other, thereby bringing the hook device into a closed state, A metal hook device, characterized in that the two locking projections on both sides of the band-shaped projection are provided at asymmetric positions.

2. The metal hook device according to claim 1 , wherein the hook opening and closing bar has a release protrusion.

3. 2. The metal hook device according to claim 1, wherein the hook opening / closing bar has an engagement hole at a lower end thereof, and the hook curved portion has an engagement projection at an open end thereof.

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