CN116464704A

CN116464704A - Safety hook

Info

Publication number: CN116464704A
Application number: CN202211431814.1A
Authority: CN
Inventors: 吉江谦一
Original assignee: YKK Corp
Current assignee: YKK Corp
Priority date: 2022-01-20
Filing date: 2022-11-16
Publication date: 2023-07-21
Also published as: JP2023106001A

Abstract

The invention provides a safety hook which can be simply assembled, reliably suspend articles and prevent accidental opening and has good appearance. The safety hook includes a main body (16) having a plurality of opening portions (28) and a swing member (40) closing the plurality of opening portions. The main body includes a first hook portion (12) and a second hook portion (14) each having an opening, and a connection portion (18) that integrally connects the first hook portion and the second hook portion and holds a part of the swing member. The swing member integrally includes a closing portion (42) for closing the opening of the main body and a spring portion (44) for biasing the closing portion. The swing member is held by the connection portion of the main body. The spring portion has a bent portion (44 b) having one end continuous with the closing portion and the other end side held by the connecting portion of the main body. The main body and the swing member are provided in a symmetrical shape with respect to the center of the connecting portion of the main body.

Description

Safety hook

Technical Field

The present invention relates to a safety hook (carabiner) having a hook portion for suspending an article and provided with a swing member for elastically switching opening and closing at an opening portion of the hook portion for attaching the article.

Background

Conventionally, a safety hook for a suspended article has various shapes, and for example, a spring portion for elastically switching opening and closing is provided in an opening portion of a hook portion of the suspended article.

For example, the lock type bidirectional safety hook of patent document 1 is provided with a main body and first and second hooking portions oriented on first and second sides of the main body. Further, a first lock arm (gate) mounted to the main body and oriented in a manner to close the first hooking portion and a second lock arm oriented in a manner to close the second hooking portion are provided. The first locking arm and the second locking arm are provided with sliding locks. The slide lock has a lock position positioned in the cutout portion of the main body and a lock release position positioned at a position distant from the cutout portion. The locking type bidirectional safety hook is designed to put articles into the first hook part and the second hook part of the main body respectively and close the locking arms respectively, so that the sliding lock slides to the locking position in the notch part. Thus, the lock arm can be prevented from being opened accidentally.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2015-516546

Disclosure of Invention

Problems to be solved by the invention

In the above-described background art, the lock arm is formed by bending a metal rod into a slender コ shape and bending both ends into a short L-shape, and the both ends bent into the L-shape are inserted into mounting holes formed in the main body to be mounted. Therefore, the mounting hole is conspicuous and the appearance is poor. The lock arm is a ring-shaped spring, and sometimes accidentally falls off when a strong force is applied by something getting caught on the ring. In addition, the lock arm has a larger thickness than the main body and is concave-convex, and the lock arm is easy to be clamped on other objects. Further, the slide lock can also be slidably mounted to the lock arm, so that the slide lock is conspicuous. In addition, the device is composed of three parts, namely a main body and two locking arms, and is high in cost.

The present invention has been made in view of the above-described problems of the related art, and an object of the present invention is to provide a safety hook that can be easily assembled, reliably suspend an article without being accidentally opened, and has a good appearance.

Means for solving the problems

The safety hook of the present invention includes a main body having a plurality of opening portions, the main body including: a first hook portion and a second hook portion respectively formed with the opening portions; and a connecting portion that integrally connects the first hook portion and the second hook portion and holds a part of the swing member, wherein the swing member integrally includes a closing portion that closes the opening of the main body and a spring portion that biases the closing portion, and the spring portion is held by the connecting portion of the main body.

The spring portion has a bent portion, one end of which is continuous with the closing portion, and the other end side of which is held by the connecting portion of the main body. The main body and the swing member are provided in a symmetrical shape with respect to the center of the connecting portion of the main body.

The spring portion is a spring that is long in one direction, the swinging member has one spring portion, the closing portions are integrally provided at both end portions of the spring portion via the bending portions, engaged portions are provided at tip end portions of the closing portions on the opposite side to the bending portions, the swinging member is provided in a point symmetrical shape with respect to a center axis intersecting a plane along the bending direction of the spring portion at a middle in the longitudinal direction of the spring portion, protruding portions are provided at tip end portions of the first hook portion and/or the second hook portion, and the tip end portions of the closing portions and the tip end portions of the first hook portion and/or the second hook portion are engaged by the engaged portions in combination with the protruding portions.

The engaged portion has a hook portion at a distal end portion of each of the closing portions, and the protruding portion of the first hook portion and/or the second hook portion has a hook portion accommodating recess at a distal end portion. The safety hook includes two members, namely, the main body and the swinging member, and the swinging member is made of resin.

The connecting portion of the main body includes a receiving space for receiving and holding the spring portion of the swing member. The swing member has a swing center shaft supported by the connection portion of the main body, and the swing center shaft is provided at a position separated by a predetermined interval from an extension line of the swing member in a longitudinal direction of the spring portion.

The safety hook according to the present invention includes a main body having one or more openings defined by one or more hook portions, and a swing member closing the openings, the swing member integrally including a closing portion closing the openings of the main body and a spring portion biasing the closing portion, the spring portion having a curved portion, one end of the curved portion being continuous with the closing portion, the other end side of the curved portion being integrally provided to the main body, the main body having a receiving space holding the spring portion of the swing member, the swing member having a swing center shaft supported by the main body, the swing center shaft being provided at a position separated from an extension line of the length direction of the spring portion of the swing member by a predetermined interval, and a tip end of the closing portion being engaged with a tip end of the hook portion by a recess and projection.

Effects of the invention

The safety hook of the invention comprises a main body and a swinging member for elastically switching the opening and closing of the opening of the main body, has simple component structure, can be simply assembled, and reduces the cost. In addition, the article can be reliably suspended and not accidentally opened. Further, by housing the spring portion of the swing member, which is elastically switched between open and closed, in the main body, the swing member and the like are not accidentally detached, and the appearance of the surface of the main body is good, and characters and patterns can be provided on the surface of the main body, so that the structure with high design can be obtained.

Drawings

Fig. 1 is a perspective view of a safety hook according to an embodiment of the present invention.

Fig. 2 is a top view (a), a front view (b), and a right side view (c) of the safety hook of this embodiment.

Fig. 3 is a longitudinal sectional view taken along line A-A of fig. 2.

Fig. 4 is a longitudinal sectional view taken along line B-B of fig. 2.

Fig. 5 is a longitudinal sectional view taken along line C-C of fig. 2.

Fig. 6 is an enlarged partial longitudinal sectional view taken along line B-B of fig. 2.

Fig. 7 is a top view (a), a front view (b), and a right side view (c) of the main body of the safety hook of this embodiment.

Fig. 8 is a longitudinal sectional view taken along line D-D of fig. 7.

Fig. 9 is a top view (a), a front view (b), and a right side view (c) of the swing member of the safety hook of this embodiment.

Fig. 10 is a perspective view of the swing member of the safety hook of this embodiment.

Description of the reference numerals

10. Safety hook

12. First hook part

14. Second hook part

16. Main body

18. Connecting part

20. Connecting part

22. Accommodation space

24. 24a, 24b holding part

26. Bearing recess

28. An opening part

30. Clamping claw

32. 34 accommodating portion

36. Protruding part

38. Hook portion accommodating recess

40. Swinging member

42. Closing part

44. Spring part

44a straight line portion

44b bend

46. Swing center shaft

50. Abutment portion

52. Locked part

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 to 10 show an embodiment of the present invention, in which a safety hook 10 is provided with a main body 16 having a first hook portion 12 and a second hook portion 14 to which an article is attached. The main body 16 is integrally molded, for example, from synthetic resin. In the case where a resin having a spring property is used for the swing member 40 described later, the material of the main body 16 may be freely selected, or a material having no spring property, a recycled material such as a metal or a resin, or the like may be used.

The main body 16 will be described with reference to fig. 7 and 8. The main body 16 is provided with a connecting portion 18 that integrally connects the first hook portion 12 and the second hook portion 14 and holds a part of a swing member 40 described later. The connecting portion 18 of the main body 16 is formed in a parallelogram plate shape, has a pair of sides parallel to each other, and is formed of a pair of short sides, i.e., side edge portions 18a, 18b, and a pair of sides, i.e., side edge portions 18c, 18d having a length of, for example, about twice as long as compared to the short sides.

The connection portion 18 is formed by disposing two parallelogram-shaped plate bodies of the same shape in parallel with each other with a prescribed interval. The side edges 18a, 18b, 18c, 18d are opposed to each other with a predetermined interval. The corner surrounded by the side edge 18a and the side edge 18c and the corner surrounded by the side edge 18b and the side edge 18d are acute angles, and the vicinity of the corner at the acute angle is a connecting portion 20 having a thickness that fills the space between the pair of plates, and connects the pair of plates. The space between the pair of plate bodies is a housing space 22 for housing a swing member 40 described later, and the side edges 18a, 18b, 18c, 18d other than the connecting portion 20 are opened by communicating with the housing space 22. The thickness direction of the plate body of the connection portion 18 is defined as the thickness direction of the main body 16. As will be described later, the main body 16 is formed in point symmetry with respect to an imaginary central axis passing through the connecting portion 18 in the thickness direction.

In the connecting portion 18, a corner surrounded by the side edge portion 18a and the side edge portion 18d and a corner surrounded by the side edge portion 18b and the side edge portion 18c form an obtuse angle, and a pair of holding portions 24 protruding by a predetermined thickness are formed on the inner side surface 18e of the housing space 22 side in the vicinity of the corner of the obtuse angle. The outer shape of the holding portion 24 parallel to the inner side surface 18e is substantially rectangular.

One of the holding portions 24a provided at the corner surrounded by the side edge 18a and the side edge 18d is formed in an outer shape surrounded by the side edge 18a, the side edge 18d, a side intersecting at a substantially right angle with a position slightly apart from the corner of the side edge 18a, and a side intersecting at a position slightly apart from the corner of the side edge 18d and substantially parallel to the side edge 18 a. The bearing recess 26 is provided at a predetermined depth on a surface of the holding portion 24a substantially parallel to the inner side surface 18 e. The bearing recess 26 is formed in a groove shape communicating with the side edge 18a at a substantially right angle, and opens to the outside of the main body 16. The end of the bearing recess 26 opposite to the side edge 18a is formed in a semicircular shape bulging toward the opposite side of the side edge 18 a. The portion of the bearing recess 26 communicating with the side edge 18a is widened toward the inner side surface 18e and also communicates with the inner side surface 18 e. The holding portions 24a are formed on a pair of plate bodies forming the connection portion 18, respectively, and face each other in the accommodation space 22.

The other holding portion 24b provided at the corner surrounded by the side edge portion 18b and the side edge portion 18c has the same shape as the holding portion 24a, and is formed in an outer shape surrounded by the side edge portion 18b, the side edge portion 18c, a side intersecting at a substantially right angle with a position slightly apart from the corner of the side edge portion 18b, and a side intersecting with a position slightly apart from the corner of the side edge portion 18c and substantially parallel to the side edge portion 18 b. The holding portion 24b is also provided with a bearing recess 26 at a predetermined depth. The bearing recess 26 is formed in a groove shape communicating with the side edge 18b at a substantially right angle, and an end of the bearing recess 26 opposite to the side edge 18b is formed in a semicircular shape bulging toward the opposite side of the side edge 18 b. The portion of the bearing recess 26 communicating with the side edge 18b widens toward the side edge 18c and also communicates with the side edge 18 c. The holding portions 24b are also formed on a pair of plates forming the connection portion 18, respectively, in the same manner as the holding portions 24a, and face each other in the housing space 22.

The first hooking portion 12 is provided protruding laterally of the side edge portion 18c of the connecting portion 18. The first hook portion 12 is formed in a deformed コ rod shape, and the base end portion 12a, which is one end portion in the longitudinal direction, is continuous with the connecting portion 20 on the side of the side edge portion 18c of the connecting portion 18. The first hook portion 12 is bent so as to protrude outward from the connecting portion 20 along the extension line of the side edge portion 18a and so as to be substantially parallel to (i.e., at an acute angle) the side edge portion 18c at a predetermined position, and is further bent toward the connecting portion 18 so as to be substantially parallel to (i.e., at an obtuse angle) the side edge portion 18b at a position on the extension line reaching the side edge portion 18b, and the distal end portion 12b of the first hook portion 12 reaches a position separated from the connecting portion 18 by a predetermined interval. The space between the front end portion 12b of the first hook portion 12 and the connecting portion 18 becomes the opening 28 for placing the article into the first hook portion 12. The outer side surface of the distal end portion 12b, which is the outer side of the コ shape of the first hook portion 12, is located on the extension line of the side edge portion 18 b.

The distal end portion 12b is provided with an engagement claw 30. The engaging claws 30 are formed in a thin shape having a smaller cross section than the cross section of the front end portion 12b intersecting the longitudinal direction, and are provided in a pair spaced apart in the thickness direction so as to protrude from the front end portion 12b toward the connecting portion 18. Each engagement claw 30 is formed of a side surface 30a, a side surface 30b, and side surfaces 30c, 30d near the distal end portion 12b, wherein the side surface 30a is coplanar with an outer side surface located on an extension line of the side edge portion 18b, the side surface 30b is located on an opposite side of the outer side surface 30a, and the side surfaces 30c, 30d are located between the side surfaces 30a, 30 b. The side surface 30c is an outer surface of the pair of engaging claws 30 that is separated from each other, and the side surface 30d is an inner surface of the pair of engaging claws 30 that faces each other. The side surface 30b is located at a position shifted to the side surface 30a side from the extension line of the コ -shaped inner side surface of the distal end portion 12 b. Thus, the inner surface 30b is recessed from the distal end 12b, and a space obtained by the recess becomes a receiving portion 32 for receiving an abutment portion 50 of the closing portion 42 of the swing member 40, which will be described later.

The side surface 30c of each engagement claw 30 is coplanar with the side surface in the vicinity of the distal end portion 12b, and the side surface 30d faces a space at a predetermined interval, and the space serves as the receiving portion 34 for receiving the engaged portion 52 of the closing portion 42 of the swing member 40. The housing portion 34 communicates with the housing portion 32. The side surfaces 30d of the engaging claws 30 are provided with protrusions 36 protruding toward the housing 34 at distal end portions apart from the distal end portions 12b of the first hook portions 12. A hook receiving recess 38 is provided in a surface of the protrusion 36 facing the distal end portion 12b, and the hook receiving recess 38 is formed along a side edge portion located on the opposite side of the receiving portion 32. The hook receiving recess 38 receives the hook 52a of the engaged portion 52 of the closing portion 42 of the swing member 40.

The second hooking portion 14 having a point-symmetrical shape with respect to the first hooking portion 12 is provided protruding laterally of the side edge portion 18d of the connecting portion 18. The second hook portion 14 is formed in a deformed コ rod shape, and a base end portion 14a, which is one end portion in the longitudinal direction, is continuous with the connecting portion 20 on the side of the side edge portion 18d of the connecting portion 18. The second hooking portion 14 is bent so as to protrude outward from the connecting portion 20 along the extension line of the side edge portion 18b and so as to be substantially parallel to (i.e., at an acute angle) the side edge portion 18d at a predetermined position, and is further bent toward the connecting portion 18 so as to be substantially parallel to (i.e., at an obtuse angle) the side edge portion 18a at a position on the extension line reaching the side edge portion 18a, and the distal end portion 14b of the second hooking portion 14 reaches a position separated from the connecting portion 18 by a predetermined interval. The space between the distal end portion 14b of the second hook portion 14 and the connecting portion 18 becomes an opening 28 for placing an article into the second hook portion 14. The outer side surface of the distal end portion 14b, which is the outer side of the コ shape of the second hooking portion 14, is located on the extension line of the side edge portion 18 a.

The distal end portion 14b is provided with an engagement claw 30 having the same shape as the engagement claw 30 of the distal end portion 12 b. The engaging claws 30 are formed in a thin shape having a smaller cross section than the cross section of the front end portion 14b intersecting the longitudinal direction, and are provided in a pair spaced apart in the thickness direction so as to protrude from the front end portion 14b toward the connecting portion 18. Each engagement claw 30 is formed of a side surface 30a, a side surface 30b, and side surfaces 30c, 30d near the distal end portion 14b, wherein the side surface 30a is coplanar with an outer side surface located on an extension line of the side edge portion 18a, the side surface 30b is located on an opposite side of the outer side surface 30a, and the side surfaces 30c, 30d are located between the side surfaces 30a, 30 b. The side surface 30c is an outer surface of the pair of engaging claws 30 that is separated from each other, and the side surface 30d is an inner surface of the pair of engaging claws 30 that faces each other. The side surface 30b is located at a position shifted to the side surface 30a side from the extension line of the コ -shaped inner side surface of the distal end portion 14 b. Thus, the inner surface 30b is recessed from the distal end portion 14b, and a space obtained by the recess becomes a receiving portion 32 for receiving an abutment portion 50 of the closing portion 42 of the swing member 40, which will be described later.

The side surface 30c of each engagement claw 30 is coplanar with the outer side surface in the vicinity of the distal end portion 14b, and the side surface 30d faces a space at a predetermined interval, and the space serves as the receiving portion 34 for receiving the engaged portion 52 of the closing portion 42 of the swing member 40. The housing portion 34 communicates with the housing portion 32. The side surfaces 30d of the engaging claws 30 are provided with protrusions 36 protruding toward the housing 34 at distal end portions apart from the distal end portions 14b of the second hook portions 14. A hook receiving recess 38 is provided in a surface of the protrusion 36 facing the distal end portion 14b, and the hook receiving recess 38 is formed along a side edge portion located on the opposite side of the receiving portion 32. The hook receiving recess 38 receives the hook 52a of the engaged portion 52 of the closing portion 42 of the swing member 40.

The safety hook 10 is provided with one swing member 40 that closes the two opening portions 28 of the main body 16. The swinging member 40 will be described with reference to fig. 9 and 10. The swing member 40 integrally includes a closing portion 42 that closes the opening 28 of the main body 16, and a spring portion 44 that biases the closing portion 42. The swing member 40 is integrally formed of synthetic resin having spring property.

The spring portion 44 of the swing member 40 has a bar shape elongated in one direction, and a cross-sectional shape intersecting the longitudinal direction is rectangular, and the longitudinal direction of the rectangle coincides with the thickness direction of the main body 16 when attached to the main body 16. Further, when a force of a certain or more is applied by a human hand, the spring portion 44 is easily elastically deformed. The spring portion 44 is bent in a Z-shape, and is composed of a straight portion 44a which is a straight line of the intermediate portion, and a bent portion 44b which is continuous with both ends of the straight portion 44 a. The bent portions 44b are formed by bending at an acute angle with respect to the straight portions 44a, and the bending direction of the pair of bent portions 44b is a direction in which the pair of bent portions 44 are separated from each other from the straight portions 44a on the same plane including the straight portions 44 a. The surface on which the straight portion 44a and the curved portion 44b are located intersects the thickness direction of the main body 16 when the swing member 40 is attached to the main body 16. In addition, the corners of the pair of bent portions 44b are smoothly bent. The vicinity of the end of the curved portion 44b opposite to the straight portion 44a is a straight line, and the straight portions of the pair of curved portions 44b are substantially parallel to each other.

The closing portions 42 are provided at the ends of the curved portions 44b opposite to the straight portions 44a, respectively. The closing portion 42 is in a rod shape that is long in the extension line direction of the straight portion of the end portion of the bent portion 44 b. The closing portion 42 is formed of a base end portion 42a that is one end portion in the longitudinal direction, an inner side surface 42b continuous with the inner side of the corner portion of the bent portion 44b, an outer side surface 42c opposite to the inner side surface 42b, and a tip end portion 42d located opposite to the base end portion 42a and intersecting the outer side surface 42c at substantially right angles. The base end portion 42a, which is one end portion in the longitudinal direction, of the closing portion 42 is continuous with an end portion of the bent portion 44b of the spring portion 44, and a boundary between the base end portion 42a and the bent portion 44b becomes a stepped portion.

The dimension of the closing portion 42 in the longitudinal direction is the length of the opening 28 of the closing body 16. The cross-sectional shape intersecting the longitudinal direction is rectangular, and when attached to the main body 16, the dimension in the thickness direction that coincides with the thickness direction of the main body 16 is smaller than the dimension in the thickness direction of the front end portion 12b of the first hooking portion 12 and the front end portion 14b of the second hooking portion 14 and slightly larger than the dimension in the thickness direction of the spring portion 44. The length in the width direction intersecting the thickness direction, that is, the interval between the inner side surface 42b and the outer side surface 42c is longer than the dimension in the thickness direction, and is substantially the same as the width of the front end portion 12b of the first hooking portion 12 and the front end portion 14b of the second hooking portion 14 and wider than the dimension in the width direction of the spring portion 44.

An outer contour line, which is a step portion at the boundary between the base end portion 42a and the bent portion 44b as viewed in the thickness direction, is connected to the inner side surface 42b and the outer side surface 42c, and an intermediate portion of the outer contour line is a curve bulging toward the center of the closing portion 42, and a position of the outer contour line connected to the outer side surface 42c is further from the distal end portion 42d than a position of the outer contour line connected to the inner side surface 42 b. That is, the outer contour extends long toward the curved portion 44b side.

The portion between the bent portion 44b and the base end portion 42a of the spring portion 44 is an attachment portion 44c where the holding portion 24 of the connecting portion 18 of the main body 16 is located when attached to the main body 16. The mounting portion 44c is coplanar with the curved portion 44b, i.e., the thickness of the mounting portion 44c is the same as the curved portion 44b and thinner than the closing portion 42. The mounting portion 44c has a fan-like shape when viewed in the thickness direction, and is surrounded by a straight line along the extension line of the inner side surface 42b, a straight line substantially parallel to the distal end portion 42d, and a curved proximal end portion 42 a. A swing center shaft 46 is integrally provided in the center of the fan shape. The swing center axis 46 is a cylindrical shape having a center axis substantially parallel to the thickness direction, and protrudes from both sides of the mounting portion 44c in the thickness direction. The swing center shaft 46 is separated from the base end portion 42a of the closing portion 42. The swing center shaft 46 is rotatably held in a bearing recess 26 formed in the holding portion 24 of the main body 16.

The curved portion 44b is connected to the outer surface 42c side of the closing portion 42 with respect to the swing center axis 46. That is, the swing center axis 46 is provided at a position of the closing portion 42 away from the center line between the inner side surface 42b and the outer side surface 42c toward the inner side surface 42b at a predetermined interval. Thus, a force that moves the closing portion 42 by the spring portion 44 acts at a position that is farther to the outer side surface 42c side of the closing portion 42 than the swing center axis 46. The bent portion 44b gradually widens as approaching the closing portion 42, and the connection strength is high.

A side surface 42e intersecting the inner side surface 42b, the outer side surface 42c, and the distal end portion 42d is provided with a locking recess 48 formed thin in the thickness direction of the closing portion 42 at a portion of the closing portion 42 continuous with the distal end portion 42d. The locking concave portion 48 is formed in a rectangular shape by being connected to the outer side surface 42c and the distal end portion 42d, and a thin portion left between the locking concave portion 48 and the inner side surface 42b is an abutment portion 50 that is inserted into the receiving portion 32 of the distal end portion 12b of the first hook portion 12 or the receiving portion 32 of the distal end portion 14b of the second hook portion 14 of the main body 16 and abuts against the engagement claw 30 from the inner side surface 30 b. The locking recess 48 has a locked portion 52 along the distal end 42d formed at a predetermined width and a predetermined height lower than the abutment portion 50. The engaged portion 52 is the engaged portion 52 that is inserted into the receiving portion 34 of the front end portion 12b of the first hook portion 12 or the receiving portion 34 of the front end portion 14b of the second hook portion 14 of the main body 16 and positioned in the engagement claw 30. The portion of the engaged portion 52 that is continuous with the outer side surface 42c is continuously formed with a hook portion 52a that protrudes toward the base end portion 42a along the outer side surface 42 c. The bottom portion of the locking recess 48 excluding the locked portion 52 and the hook portion 52a has a thin plate shape along the center of the thickness of the outer side surface 42c, and is positioned so as to be interposed between the protrusions 36 of the pair of engagement claws 30 of the main body 16.

The swinging member 40 is deflected in a direction intersecting the thickness direction of the spring portion 44, and the swinging member 40 is formed in a shape that is point-symmetrical with respect to an imaginary central axis intersecting a plane along the deflection direction at the middle of the length direction of the spring portion 44, and is rotated 180 ° from each other. The main body 16 is also formed in a shape that is point-symmetrical with respect to an imaginary central axis along the thickness direction at the center of the connecting portion 18, and is formed in a shape that is rotated 180 ° from each other.

Next, a method of assembling the safety hook 10 of this embodiment will be described. The body 16 is aligned with the thickness direction of the swing member 40, and the tip end 42d of one of the closing portions 42 of the swing member 40 is inserted into the accommodation space 22 from the side edge 18d of the connecting portion 18 and is discharged from the side edge 18 b. At this time, the swing member 40 is pulled out while being elongated and the angle of the bent portion 44b is greatly deformed, and the swing center shaft 46 is put into the bearing recess 26 of the holding portion 24b from the side edge portion 18b until the swing center shaft 46 also comes out from the side edge portion 18 d. The swing center shaft 46 on the other closing portion 42 side is also placed in the bearing recess 26 of the holding portion 24a from the side edge portion 18 a. Then, the elastic deformation of the swinging member 40 returns, the swinging center shafts 46 are pulled to the semicircular wall portions on the inner side of the bearing recess 26 without falling off, the pair of swinging center shafts 46 are rotatably accommodated in the pair of bearing recesses 26, and the spring portions 44 of the swinging member 40 are accommodated in the accommodation spaces 22 of the connecting portions 18 of the main body 16. At this time, the pair of closing portions 42 protrude obliquely outward from the pair of opening portions 28.

Then, the distal end portion 42d of each closing portion 42 is elastically deformed in the thickness direction so as to pass over the engagement claw 30 of the main body 16, and then is elastically deformed so as to reduce the angle of the bent portion 44b of the spring portion 44 so as to enter the inner side surface 30b side of the engagement claw 30. When the elastic deformation force is released, the distal end portion 42d is inserted between the pair of engagement claws 30 of the distal end portion 12b of the first hook portion 12 by the elastic force of the spring portion 44, and the abutment portion 50 is urged to abut against and engage with the inner side surfaces 30b of the engagement claws 30.

At this time, the locking concave portions 48 are located at the protruding portions 36 of the pair of engaging claws 30, and are thus positioned in the thickness direction. Further, the abutting portion 50 is biased to abut against the inner side surface 30b of the engagement claw 30, and therefore is positioned so as not to be displaced in the right-left direction in fig. 2 (b) intersecting the thickness direction, so that the front end portion 42d is not displaced in the right direction in the first hooking portion 12, and the front end portion 42d is not displaced in the left direction in the second hooking portion 14. Further, since the hook 52a of the engaged portion 52 is positioned in the hook receiving recess 38 of the protrusion 36 of the engaging claw 30, it is positioned so as not to be displaced in the left-right direction in fig. 2 (b) intersecting the thickness direction, so that the front end 42d is not displaced in the left direction in the first hooking portion 12, and the front end 42d is not displaced in the right direction in the second hooking portion 14. Since the swing center shaft 46 is accommodated in the bearing recess 26, it does not move in the up-down direction in fig. 2 (b) intersecting the thickness direction.

Thus, the swinging member 40 is positioned in the pair of opening portions 28 with respect to the main body 16 so that the closing portions 42 are closed, and the assembly is completed. Under the action of the elastic force to increase the angle of the bent portion 44b of the spring portion 44, the force to rotate the tip end portion 42d side of each closing portion 42 around the swing center axis 46 is applied, and the tip end portion 42d is pressed against the inner side surface 30b of the engagement claw 30 without falling off.

In contrast to the above-described method, the method of assembling may be performed by inserting the tip end 42d of one of the closing portions 42 of the swinging member 40 from the side edge 18c of the connecting portion 18 into the housing space 22 and then out of the side edge 18 a.

Next, a method of using the safety hook 10 will be described. When an article is to be hung on the first hook portion 12 or the second hook portion 14, as shown in fig. 6, the closing portion 42 is rotated about the swing center axis 46 while the closing portion 42 is pressed inward of the opening portion 28 to elastically deform the spring portion 44, so that the distal end portion 42d is separated from the engagement claw 30 of the first hook portion 12 and opened. The hook 52a of the distal end portion 42d is positioned in the left direction by engaging with the hook receiving recess 38 of the engaging claw 30, but normally, the engaging area is small, and thus can be opened by applying a force of a certain or more. When the object passes through and the force is removed, the closing portion 42 rotates again around the swing center shaft 46 by the elastic force of the spring portion 44, thereby closing the opening 28. The closing portion 42 is always biased toward the engagement claw 30, and thus is not accidentally opened. The locking recess 48, the abutment 50, the locked portion 52, and the hook 52a of the closing portion 42 are locked in any of the thickness direction and the direction intersecting the thickness direction, and are not disengaged, when received in the receiving portion 34, the receiving portion 32, and the hook receiving recess 38 of the main body 16.

When one of the closing portions 42 is pushed in to open the opening 28, as shown in fig. 6, the bent portion 44b is deflected to slightly bulge outward from the side edge portion 18b of the connecting portion 18, and a force to pull outward is generated in the linear portion 44a of the spring portion 44, but the closing portion 42 on the opposite side is forced in a direction to close the opening 28 around the swing center axis 46, so that the closing portion 42 on the opposite side is not accidentally opened.

When a strong force is applied to the article suspended from the first hook portion 12, the distal end portion 12b of the first hook portion 12 is slightly elastically deformed in a direction away from the distal end portion 42d of the closing portion 42, but since the hook portion 52a is inserted deeper into the hook portion accommodating recess portion 38, the engaging area of the hook portion 52a with the hook portion accommodating recess portion 38 becomes large, and the engagement is not likely to be released, and thus the safety is ensured.

According to the safety hook 10 of this embodiment, the main body 16 and the swinging member 40 are formed as two members, and the safety hook has a simple component structure, a low cost, and easy management of components, and the main body 16 and the swinging member 40 are easily assembled. The spring portion 44 and the swing center shaft 46 of the swing member 40 are accommodated in the accommodation space 22 of the connection portion 18, and are not visible from the surface of the connection portion 18, so that the appearance is good. The surface of the connection portion 18 can be formed in a large area, characters and patterns can be provided, trade names, manufacturers, and the like can be recorded, and additional customer marks and the like can be added, so that additional values such as design and functionality can be improved. In addition, the hole for assembly is not required, the appearance design can be simply performed without having concave and convex on the appearance, the appearance design is high, and the situation of being clamped on other components can be restrained.

In addition, the article can be reliably suspended, preventing accidental opening. Even if the first hook portion 12 or the second hook portion 14 is deformed due to the article being a heavy object or being applied with a strong force, the engagement area of the hook portion 52a with the hook portion accommodating recess portion 38 increases, and the opening is not possible, which is safe. Since the swing center shaft 46 is provided at a position of the closing portion 42 away from the center line between the inner side surface 42b and the outer side surface 42c toward the inner side surface 42b at a predetermined interval, even if the closing portion 42 is rotated about the swing center shaft 46 to open one opening 28, the other opening 28 is not opened, and the biasing force is reduced. The closing portion 42 has a swing center shaft 46 provided at the base end portion 42a, and an abutment portion 50 and a locked portion 52 provided at the tip end portion 42d, and is reliably engaged with the main body 16, with high strength. Thus, the first hook portion 12 and the second hook portion 14 do not need to be rigid, and thus, the degree of freedom in design is provided. The swing member 40 has the following structure by the arrangement of the shafts at two positions based on the two swing center shafts 46 and the spring portion 44 having the bent portion 44 b: when one of the closing portions 42 is pushed inward of the opening 28 during opening, a force is applied in a direction in which the opposite closing portion 42 is opened, and the force is pressed against the engagement claw 30 of the first hook portion 12 or the second hook portion 14 to close the same. Thereby, the closing portion 42 on the opposite side is not accidentally opened.

The main body 16 is easy to assemble because the pair of openings 28 are opened and the housing space 22 is communicated between the pair of openings 28. Further, since the bearing recess 26 communicates with the outside of the main body 16, when the swing member 40 is assembled to the main body 16, the swing center shaft 46 is elastically deformed so as to expand the angle of the bent portion 44b of the spring portion 44, and is assembled by being placed in the bearing recess 26 from the outside of the side edge portions 18a and 18b of the connecting portion 18, so that the assembly is easy. Further, since the swing center shaft 46 is not exposed to the outside of the main body 16, the design is improved.

The swinging member 40 is accommodated in the thickness of the main body 16, and does not catch on other articles, and the closing portion 42 is not easily detached from the opening 28. The spring portion 44 has a simple structure and is less susceptible to creep. If the swing member 40 is made of a resin having a spring property, the material of the main body 16 may be freely selected, or a material having no spring property, a metal, a recycled material, or the like may be used. In the proposal of sustainable products made of recycled materials, which can be used for increasing strength by metals according to the demands of customers.

The safety hook of the present invention is not limited to the above-described embodiment, and the shapes of the main body and the swinging member may be changed appropriately, and the number of the hook portions of the main body may be one as long as the swinging member can be reliably attached to the main body. The suspended articles can be various articles such as cameras, whistles, bags, boxes and the like. The material, color, surface treatment, transparency, etc. of the main body and the swing member can be freely changed, and can be appropriately changed in accordance with the design and the desired function. Or may be made of metal.

Claims

1. A safety hook (10) includes a main body (16) having a plurality of opening portions (28) and a swing member (40) closing the plurality of opening portions (28),

the safety hook (10) is characterized in that,

the main body (16) includes: a first hook portion (12) and a second hook portion (14) each having the opening (28) formed therein; and a connection part (18) which connects the first hook part (12) and the second hook part (14) together and holds a part of the swing member (40),

the swing member (40) integrally includes a closing portion (42) for closing the opening portion (28) of the main body (16) and a spring portion (44) for urging the closing portion (42), and the swing member (40) is held by the connecting portion (18) of the main body (16).

2. The safety hook of claim 1, wherein,

the spring portion (44) has a bent portion (44 b), one end of the bent portion (44 b) is continuous with the closing portion (42), and the other end side of the bent portion (44 b) is held by the connecting portion (18) of the main body (16).

3. The safety hook of claim 2, wherein,

the main body (16) and the swing member (40) are provided in a symmetrical shape with respect to the center of the connecting portion (18) of the main body (16).

4. A safety hook according to claim 3, wherein,

the spring portion (44) is a spring long in one direction, the swing member (40) has one spring portion (44), the closing portions (42) are integrally provided at both end portions of the spring portion (44) via the bending portions (44 b), the engaged portions (52) are provided at the front end portions (42 d) of the closing portions (42) on the opposite side of the bending portions (44 b),

the swing member (40) is provided in a point-symmetrical shape with respect to a center axis intersecting a plane along the bending direction of the spring portion (44) at the middle of the length direction of the spring portion (44),

a protrusion (36) is provided at the front end (12 b, 14 b) of the first hook (12) and/or the second hook (14),

the front end part (42 d) of the closing part (42) and the front end parts (12 b, 14 b) of the first hook part (12) and/or the second hook part (14) are provided so that the protruding part (36) engages with the engaged part (52).

5. The safety hook of claim 4, wherein,

the engaged portion (52) has a hook portion (52 a) at a distal end portion (42 d) of each of the closing portions (42), and the protruding portion (36) of the first hook portion (12) and/or the second hook portion (14) has a hook portion accommodating recess (38) at distal end portions (12 b, 14 b).

6. The safety hook of claim 4 or 5, wherein,

the safety hook comprises two members, namely the main body (16) and the swinging member (40), wherein the swinging member (40) is made of resin.

7. A safety hook according to claim 1 or 3, wherein,

the connecting portion (18) of the main body (16) is provided with a receiving space (22) for receiving and holding the spring portion (44) of the swing member (40).

8. A safety hook according to claim 1 or 3, wherein,

the swing member (40) has a swing center axis (46) supported by the connection portion (18) of the main body (16), and the swing center axis (46) is provided at a position separated by a predetermined interval from an extension line of the spring portion (44) of the swing member (40) in the longitudinal direction.

9. A safety hook (10) comprising a main body (16) and a swinging member (40), wherein the main body (16) has one or more openings (28) defined by one or more hooking portions (12, 14), the swinging member (40) closes the openings (28),

the safety hook (10) is characterized in that,

the swing member (40) integrally includes a closing portion (42) for closing the opening portion (28) of the main body (16) and a spring portion (44) for urging the closing portion (42),

the spring part (44) has a bent part, one end of which is continuous with the closing part (42), and the other end side of which is integrally provided to the main body (16),

the main body (16) is provided with a receiving space (22) for holding the spring part (44) of the swing member (40),

the swing member (40) has a swing center shaft (46) supported by the main body (16), the swing center shaft (46) is provided at a position separated by a predetermined interval from an extension line of the spring portion (44) of the swing member (40) in the longitudinal direction,

the front end (42 d) of the closing part (42) is engaged with the front ends (12 b, 14 b) of the hooking parts (12, 14) by means of projections and depressions.