JP2017108822A - Hook for safety belt for high-place work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hook configured to be smoothly locked to a fixing structure and removed therefrom.SOLUTION: A stopper 6 turns around a pin 9. A handle 10 turns around a pin 11. The handle and the stopper are connected by a guide groove 12 of the handle and a guide pin 13 of the stopper. A lock lever 14 turns around a pin 17. The pin 9 is inserted into a long hole 14d of the lock lever. The lock lever and the handle are respectively energized by springs 19 and 20. The stopper is normally engaged with an engagement step part 18 of the lock lever, the guide pin is located at a first portion 12a of the guide groove, and the stopper is double-locked at a closed position. In use, the handle and an operation part of the lock lever are held by a hand, after the first lock of the stopper is first unlocked by turning of the lock lever, a second lock of the stopper is unlocked by turning of the handle, and the stopper turns to an open position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an aerial work safety belt used at an aerial work site, in particular, a hook provided at the tip of the lifeline and used to lock the lifeline to a fixing structure at an aerial work site. It is about.

  Conventional hooks for safety work for high places include, for example, those described in Patent Documents 1 and 2. Each of these hooks includes a hook-shaped hook body, and a stopper (opening / closing cap) and a handle (safety device) attached to the inner edge side and the outer edge side of the hook body base portion, respectively.

  In this case, the stopper is attached to the base of the hook body by the first pin at one end thereof, can be turned around the first pin, extends from the base of the hook body to the tip of the hook body, and closes the hook opening. The handle is attached to the middle part of the hook body by the second pin at one end thereof, which is pushed into the inside of the hook body from the closed position to open the hook body base and the tip (opening the hook opening). The second end of the handle extends to the base of the hook body around the second pin between a first position furthest away from the hook body and a second position closest to the hook body.

  Further, in the hook described in Patent Document 1, the handle and the stopper are connected by a guide groove formed on the other end side of the handle and a guide pin inserted through the guide groove and fixed to the stopper. The guide groove is composed of a first arc-shaped portion extending in the longitudinal direction of the handle and a second portion extending in the width direction of the handle from one end of the first portion.

  When the stopper is in the closed position and the handle is in the first position, the guide pin is positioned in the second portion of the guide groove, and the stopper is locked in the closed position. A first spring for biasing the stopper toward the normally closed position is disposed between the main bodies, and a second spring for constantly biasing the handle toward the first position is disposed between the handle and the hook main body. .

On the other hand, in the hook described in Patent Document 2, the stopper and the handle are connected via a lock member. In this case, the other end of the stopper and one end of the lock member are pivotably connected by a third pin, and the arc-shaped first portion extending in the longitudinal direction of the lock member is provided on the other end side of the lock member. And a second groove extending from the one end of the first portion in the width direction of the lock member.
Further, the other end of the lock member and the other end of the handle are overlapped, and the handle is provided with a guide pin (third pin) protruding into the guide groove of the lock member, so that the lock member and the handle are connected. .

  When the stopper is in the closed position and the handle is in the first position, the guide pin is positioned in the second portion of the guide groove of the lock member, and the stopper is locked in the closed position. Further, a spring is attached around the second pin, and the spring is urged toward the normally closed position by the spring, and the lock member is always urged in a direction to position the handle at the first position. ing.

  In these conventional hooks, the handle and the stopper are normally in the first position and the closed position, respectively, the stopper is locked in the closed position, and the hook opening is closed. When using the hook, first, grip the handle and the middle part of the stopper with hands, turn the handle and the stopper to the second position side and the open position side, respectively, and release the lock. The handle and the stopper are pivoted to the second position and the open position, respectively, with the hand held by the intermediate portion, thereby opening the hook opening.

  However, in this configuration, as shown in FIG. 7B, with the hook opening 23 open, the user's finger (index finger, middle finger, etc.) 24 is hooked on the intermediate portion of the stopper 25, and the hook is When the anchoring structure 26 is locked to the fixing structure 26 (in FIG. 7B, a scaffolding pipe is drawn as the fixing structure) and removed from the fixing structure 26, the user's finger 24 is moved to the hook opening 23. There is a problem of obstructing a part of it.

  This problem is particularly noticeable when, for example, the hook is manufactured exclusively for a scaffolding pipe as a fixing structure, and the hook opening is designed to a size that matches the pipe diameter.

Japanese Utility Model Publication No. 5-62270 Japanese Patent No. 3287918

  Accordingly, an object of the present invention is to provide a hook that can be smoothly locked to and removed from a fixing structure.

  In order to solve the above-mentioned problems, the present invention is a hook provided at the tip of a lifeline of a safety belt for working at high places, for locking the lifeline to a fixing structure at the work site at high places, A hook body having a hook shape comprising a base end portion having a connection opening, an intermediate portion extending from the base end portion, and an inverted U-shaped tip portion connected to the tip of the intermediate portion; and a base portion And a lever formed of an arm portion extending from the base portion, disposed on an inner edge side of the hook body, and the base portion is attached to the intermediate portion of the hook body by a first pin. A stopper that is pivotable around a pin, wherein the stopper includes a closed position in which the arm portion extends from the intermediate portion of the hook body to a tip of the hook body, and the arm portion from the closed position. Inward The hook body is open and opens between the base end and the tip of the hook body, and further has a lever shape and is arranged on the outer edge side of the hook body, and one end is hooked by the second pin. Attached to the intermediate portion of the main body, the second pin is pivotable between a first position furthest away from the hook main body and a second position closest to the hook main body, around the second pin. A first portion extending in the width direction of the handle, and an end of the first portion that is far from the first pin, and the length of the handle A guide groove formed with a second portion extending in a direction away from the second pin is formed, the base portion of the stopper and the handle partially overlap, and the base portion of the stopper Is provided with a guide pin protruding into the guide groove of the handle, and when the stopper is in the closed position and the handle is in the first position, the guide pin is in the guide groove. The stopper is locked in the closed position by being located within the portion 1, and the guide pin is moved in the guide groove while the handle is swung from the first position to the second position. After the first part enters the second part and the lock is released, the guide pin moves along the second part of the guide groove so that the stopper is swung to the open position. And an operation portion disposed adjacent to the arm portion of the stopper on the inner edge side of the base end portion of the hook body, and the hook from the operation portion. And an insertion portion extending between the base portion of the stopper and the stopper, and the distal end side of the insertion portion is attached to the intermediate portion of the hook body by a third pin, around the third pin, A lock lever capable of turning between a lock position furthest away from the hook body and a lock release position closest to the hook body, the lock lever extending in a turning direction of the lock lever; An elongated hole through which one pin is inserted is provided, and an engaging portion that can engage with the arm portion of the stopper is provided, the stopper takes the closed position, and the lock lever takes the lock position. When the engaging portion engages with the arm portion, the stopper is prevented from turning to the open position, and the lock lever is in the unlocked position. The engagement portion is disengaged from the arm portion, and is further disposed between the hook body and the lock lever, and urges the lock lever toward the lock position. A hook comprising: a first spring; and a second spring disposed between the hook body and the handle and biasing the handle toward the first position. It is composed.

  In the above configuration, preferably, the stopper includes a pair of opposing first walls and a second wall that connects one side edge of a region of the pair of first walls forming the arm portion. The region forming the base portion with the intermediate portion of the hook body fitted between the region forming the base portion in the pair of first walls is formed in the hook body by the first pin. The lock lever includes a pair of third walls facing each other, and a fourth wall connecting one side edges of a region forming the operation portion in the pair of third walls, A region forming the insertion portion in a state of being inserted between the first wall of the stopper and the hook main body related to the region forming the insertion portion in a pair of third walls is the third pin. By It is attached to the hook body, the elongated holes are provided in each of the pair of third walls, and further, the insertion from the operation portion at the side edge of the pair of third walls on the fourth wall side An engaging step is formed in the transition region to the portion, and the engaging portion comprises the engaging step, and when the stopper is in the closed position and the lock lever is in the locked position, An end of the first wall on the inner surface of the second wall is engaged with the engagement step portion.

  Preferably, the handle includes a pair of opposing side walls and a connection wall that connects one side edges of the pair of side walls, and the handle is fitted into the hook body from the outside. The guide body is attached to the hook body by a pin, the guide groove is provided in each of the pair of side walls of the handle, and the pair of first walls of the stopper respectively project into the guide groove related to the pair. Guide pins are provided.

According to the present invention, the stopper and the handle are disposed on the inner edge side and the outer edge side of the hook body, respectively, and the stopper is attached to the hook body by the first pin, between the closed position for closing the hook opening and the opening position for opening. And a handle is attached to the hook body by a second pin and is pivotable between a first position furthest away from the hook body and a second position closest to the hook body, and The handle and the stopper are connected by the guide groove of the handle and the guide pin of the stopper protruding into the guide groove.
In addition, the lock lever is disposed on the inner edge side of the hook body, and is attached to the hook body by the third pin, so that the lock lever can be turned between a lock position furthest away from the hook body and a lock release position closest to the hook body. The first pin is inserted through the long hole of the lock lever.

  Further, the lock lever is biased toward the lock position by the first spring, and the handle is biased toward the first position by the second spring. Accordingly, the stopper is normally in the closed position, the lock lever is in the lock position, and the handle is in the first position. At this time, the stopper is engaged with the engaging portion of the lock lever, and at the same time, the guide pin is positioned at the first portion of the guide groove, so that the stopper is double-locked at the closed position.

  When the hook is used, the operation part of the handle and the lock lever is grasped by the user's hand, the lock lever is swung to the unlock position, the first lock of the stopper is released, and the first lock In the released state, the handle is turned to the second position side, the guide pin enters the second portion of the guide groove, the second lock of the stopper is released, and then the guide pin is moved to the second position. When the stopper moves to the open position side and the handle reaches the second position, the stopper reaches the open position and the hook opening is opened.

  Thus, the stopper is normally double-locked to the closed position, and the stopper is not swung from the closed position to the open position only by operating the handle unless the lock by the lock lever is released. Thereby, the safety of the hook locked to the fixing structure is further increased.

  In addition, according to the present invention, the lock of the stopper is released from the closed position to the open position by holding the operating portion of the lock lever and the handle by hand without releasing the finger from the stopper. It can be swung, and the finger of the user does not block a part of the hook opening when the hook is locked to the fixing structure or removed from the fixing structure. As a result, even when a hook dedicated to a pipe as a fixing structure is used, the hook can be smoothly locked and removed from the pipe.

It is a perspective view of the hook of the safety belt for high work according to one embodiment of the present invention. It is a disassembled perspective view of the hook shown in FIG. 2A is a plan view of the hook shown in FIG. 1, in which FIG. 1A shows a state where a stopper is double-locked to a closed position by a lock lever and a handle, and FIG. Only the lock is released. FIG. 2A is a plan view of the hook shown in FIG. 1, in which FIG. 1A shows a state where the stopper is in a closed position and the double lock of the stopper by the lock lever and the handle is released, and FIG. It shows the state when taking. FIG. 2 is an enlarged plan view of a hook stopper and a lock lever portion shown in FIG. 1, (A) shows a state where the lock lever is in a lock position, and (B) shows a state where the lock lever is in a lock release position. It is shown. It is the perspective view which expanded the stopper and lock lever part of a hook shown in Drawing 1, (A) shows the state where a lock lever is in a locked position, and (B) shows the state where a lock lever is in a lock release position. It is shown. (A) is a figure which shows the state which grasped the hook of FIG. 1 with the hand, and opened the hook opening, (B) is a figure which shows the state which grasped the conventional hook with the hand and opened the hook opening.

Hereinafter, the configuration of the present invention will be described based on preferred embodiments with reference to the accompanying drawings.
FIG. 1 is a perspective view of a hook for a safety work belt for working at high places according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the hook shown in FIG. 3 is a plan view of the hook of FIG. 1, (A) shows a state where the stopper is double-locked to the closed position by the lock lever and the handle, and (B) shows that the stopper is in the closed position. It shows a state in which only the lock by the lock lever is released. 4 is a plan view of the hook of FIG. 1. FIG. 4A shows a state in which the stopper is in the closed position and the double lock of the stopper by the lock lever and the handle is released, and FIG. It shows the state when the stopper is in the open position.

1 to 4, according to the present invention, the base end portion 2 provided with the lifeline connecting opening 5, the intermediate portion 3 extending from the base end portion 2, and the front end of the intermediate portion 3 are connected. A hook body 1 having a hook shape including an inverted U-shaped tip 4 is provided. The hook body 1 is formed in a plate shape as a whole.
The shape of the hook body 1 is not limited to this, and the hook body 1 may have any shape as long as it has the base end portion 2, the intermediate portion 3, and the inverted U-shaped tip portion 4. .

Further, according to the present invention, the stopper 6 is attached to the inner edge 1 b side of the hook body 1.
The stopper 6 is formed of a pair of first walls 6a and 6b facing each other and a second wall 6c connecting one side edges of the pair of first walls 6a and 6b. The cross section formed by the arm portion 8 extending from 7 has a U-shaped lever shape.

Then, with the intermediate portion 3 of the hook body 1 fitted between the base portions 7 of the stopper 6, the base portion 7 is attached to the proximal end portion 2 side of the intermediate portion 3 by the first pin 9, and the stopper 6 is A closed position in which the arm portion 8 extends from the intermediate portion 3 of the hook body 1 to the tip 1a of the hook body 1 and closes the hook opening 1d around the first pin 9 (FIGS. 3A to 3B). 4 (A)), and the arm portion 8 is pushed inward from the closed position to open between the proximal end 2 and the distal end 1a of the hook body 1 (open the hook opening 1d) (see FIG. 4B). ).
In this case, when the stopper 6 takes the closed position, the outer surface of the tip of the second wall 6c of the stopper 6 abuts on the tip 1a of the hook body 1, and the outward rotation from the closed position of the stopper 6 is prevented.

According to the present invention, the handle 10 having a lever shape is further attached to the outer edge 1 c side of the hook body 1. The handle 10 is formed as a U-shaped member having a pair of side walls 10a and 10b facing each other and a connection wall 10c connecting one side edges of the pair of side walls 10a and 10b.
In this embodiment, in order to facilitate processing and assembly, the handle 10 is composed of a pair of members symmetrical with respect to the longitudinal axis of the connection wall 10c, and these pair of members are coupled to each other by screws 10d.

  The handle 10 is fitted to the hook body 1 from the outside and is attached to the intermediate portion 3 of the hook body 1 by the second pin 11 at one end, and is furthest away from the hook body 1 around the second pin 11. It can turn between the first position (see FIGS. 3A to 3B) and the second position closest to the hook body 1 (see FIG. 4B).

The other end of the handle 10 extends to the base end 2 of the hook body 1, and a guide groove 12 is provided on the inner surface on the other end side of the handle.
The guide groove 12 is provided on the inner surface of each of the pair of side walls 10a and 10b of the handle 10, and the first portion 12a extending in the width direction of the handle 10 and the one far from the first pin 9 of the first portion 12a. And a second portion 12b extending in the length direction of the handle 10 in a direction away from the second pin 11 from the far end.
The second portion 12b of the guide groove 12 is preferably curved so as to be concave toward the first pin 9 side.

  Further, the handle 10 partially overlaps the base portion 7 of the stopper 6, and the pair of first walls 6 a and 6 b of the stopper 6 are respectively provided with guide pins 13 that project into the related guide grooves 12. As a result, the handle 10 and the stopper 6 are connected.

  Thus, when the stopper 6 is in the closed position and the handle 10 is in the first position, the guide pin 13 is positioned in the first portion 12a of the guide groove 12 so that the stopper 6 is locked in the closed position. The guide pin 13 enters the second portion 12b from the first portion 12a of the guide groove 12 and is unlocked while the guide pin 10 is swung from the first position to the second position. 13 moves along the second portion 12b of the guide groove 12, and the stopper 6 is turned to the open position.

  Furthermore, according to the present invention, the lock lever 14 is attached to the inner edge side of the proximal end portion 2 of the hook body 1. The lock lever 14 includes an operation portion 15 disposed adjacent to the arm portion 8 of the stopper 6 on the inner edge side of the base end portion 2 of the hook body 1, and between the operation portion 15 and the base portion 7 of the hook body 1 and the stopper 6. And an extending insertion portion 16.

The lock lever 14 includes a pair of third walls 14a and 14b that face each other and a fourth wall 14c that connects one side edges of a region that forms the operation portion 15 in the pair of third walls 14a and 14b. It has become.
Then, in a state where the region forming the insertion portion 16 of the pair of third walls 14a and 14b is inserted between the first walls 6a and 6b of the stopper 6 and the hook body 1, the region is the third wall. The lock lever 14 is attached to the intermediate portion 3 of the hook body 1 by the pin 17, so that the lock lever 14 is located farthest from the hook body 1 around the third pin 17 (see FIG. 3A), and the hook It can turn between the unlocking position closest to the main body 1 (see FIGS. 3B and 4A to 4B).

  Each of the pair of third walls 14a and 14b is provided with a long hole 14d extending in the turning direction of the lock lever 14, and the first pin 9 is inserted into the long hole 14d. The long hole 14d has a length that does not hinder the turning movement between the lock position and the lock release position of the lock lever 14. In this embodiment, when the lock lever 14 is in the unlocked position, it comes into contact with one end of the elongated hole 14d.

  Further, when the stopper 6 is in the closed position and the lock lever 14 is in the locked position, the lock lever 14 is engaged with the arm portion 8 of the stopper 6 to prevent the stopper 6 from turning to the open position. When the lock lever 14 takes the unlocking position, an engaging portion that allows the stopper 6 to turn is provided.

  FIG. 5 is an enlarged plan view of the hook stopper and the lock lever portion shown in FIG. 1, (A) shows a state where the lock lever is in the lock position, and (B) shows a state where the lock lever is in the lock release position. It shows a certain state. 6 is an enlarged perspective view of the hook stopper and the lock lever portion shown in FIG. 1. FIG. 6A shows a state in which the lock lever is in the locked position, and FIG. 6B shows a state in which the lock lever is unlocked. It shows the state in position.

Referring to FIGS. 5 and 6, in this embodiment, the engaging portion moves from the operation portion 15 on the side edge of the pair of third walls 14 a and 14 b on the fourth wall 14 c side to the insertion portion 16. It consists of an engaging step 18 provided in the region.
As shown in FIGS. 5A and 6A, when the stopper 6 is in the closed position and the lock lever 14 is in the locked position, the proximal end of the inner surface of the second wall 6c of the arm portion 8 of the stopper 6 is used. (The end on the first pin 9 side) engages with the engaging step portion 18, and the turning of the stopper 6 to the open position is prevented.
On the other hand, as shown in FIG. 5 (B) and FIG. 6 (B), when the lock lever 14 takes the unlock position, the engagement between the engagement step portion 18 of the lock lever 14 and the stopper 6 is released, The stopper 6 can be turned to the open position.

Furthermore, according to the present invention, the first spring 19 is attached between the hook body 1 and the inner surface of the fourth wall 14c of the lock lever 14, and the lock spring 14 is always directed to the locked position by the first spring 19. Is energized.
A second spring 20 is attached between the hook body 1 and the inner surface of the second wall 10c of the handle 10, and the handle 10 is always biased toward the first position by the second spring 20. .

  In the hook of the present invention, the stopper 6 is normally in the closed position, the lock lever 14 is in the lock position, and the handle 10 is in the first position. At this time, the stopper 6 engages with the engaging step portion 18 of the lock lever 14 and at the same time, the guide pin 13 is positioned in the first portion 12a of the guide groove 12, whereby the stopper 6 is double-locked in the closed position. (See FIGS. 3A, 5A, and 6A).

  When the hook is used, the handle 10 and the operating portion 15 of the lock lever 14 are gripped by the user's hand, the lock lever 14 is turned to the unlock position, and the first lock of the stopper 6 is released (FIG. 3 ( B), FIG. 5B, and FIG. 6B), and the handle 10 is turned to the second position side in the state where the first lock is released, and the guide pin 13 is moved to the guide groove 12. The second lock of the stopper 6 is released (see FIG. 4A), and then the guide pin 13 moves along the second portion 12b. When the stopper 6 turns to the open position side and the handle 10 reaches the second position, the stopper 6 reaches the open position and the hook opening 1d is opened (see FIG. 4B).

  Thus, the stopper 6 is always double-locked to the closed position, and the stopper 6 is not swung from the closed position to the open position only by operating the handle 10 unless the lock lever 14 is unlocked. Thereby, the safety of the hook locked to the fixing structure is further increased.

  In addition, as shown in FIG. 7A, by holding the operation portion 15 of the lock lever 14 and the handle 10 with the hand 21, the double lock of the stopper 6 is released without putting the finger on the stopper 6. Thus, the stopper 6 can be swung from the closed position to the open position, and can be locked to the hook fixing structure 22 (in FIG. 7A, a scaffold pipe is drawn as the fixing structure). During removal from the fixing structure 22, the user's fingers do not block a part of the hook opening 1 d. As a result, even when a hook dedicated to a pipe as a fixing structure is used, the hook can be smoothly locked and removed from the pipe.

The configuration of the present invention has been described based on one preferred embodiment. However, the configuration of the present invention is not limited to the above-described embodiment, and various modifications may be made within the scope of the configuration described in the claims. Needless to say, it can be devised.
For example, in the above-described embodiment, the hook is configured with the stopper, the lock lever, and the handle as members having a U-shaped cross section, but the hook may be configured with the stopper, the lock lever, and the handle as all flat plate members. it can.

DESCRIPTION OF SYMBOLS 1 Hook main body 1a Tip 1b Inner edge 1c Outer edge 1d Hook opening 2 Base end part 3 Middle part 4 Tip part 5 Lifeline connection opening 6 Stopper 6a, 6b First wall 6c Second wall 7 Base part 8 Arm part 9 First pin 10 Handle 10a, 10b Side wall 10c Connection wall 10d Screw 11 Second pin 12 Guide groove 12a First portion 12b Second portion 13 Guide pin 14 Lock levers 14a, 14b Third wall 14c Fourth wall Wall 14d Long hole 15 Operation part 16 Insertion part 17 Third pin 18 Engagement step part 19 First spring 20 Second spring 21 User's hand 22 Fixing structure (scaffolding pipe)
23 Hook opening 24 User's finger 25 Stopper 26 Fixing structure (scaffolding pipe)

Claims (3)

It is provided at the tip of a lifeline of a safety work belt for working at heights, and is a hook for locking the lifeline to a fixing structure at the work site at heights,
A hook main body having a hook shape including a base end portion having a lifeline connecting opening, an intermediate portion extending from the base end portion, and an inverted U-shaped tip end portion connected to the tip end of the intermediate portion;
The lever portion includes a base portion and an arm portion extending from the base portion, and is disposed on an inner edge side of the hook body, and the base portion is attached to the intermediate portion of the hook body by a first pin. A stopper that is pivotable around one pin,
The stopper includes a closed position in which the arm portion extends from the intermediate portion of the hook body to the tip of the hook body, and the base portion of the hook body in which the arm portion is pushed inward from the closed position. Take the open position that opens between the tips,
It has a lever shape, is disposed on the outer edge side of the hook body, and one end is attached to the intermediate portion of the hook body by a second pin, and is furthest away from the hook body around the second pin A handle that is pivotable between a first position and a second position closest to the hook body;
The other end of the handle is connected to a first portion extending in the width direction of the handle and an end of the first portion far from the first pin, and the handle is extended in the length direction of the handle. A guide groove comprising a second portion extending in a direction away from the second pin is formed;
The base portion of the stopper and the handle partially overlap, and the base portion of the stopper is provided with a guide pin protruding into the guide groove of the handle,
When the stopper is in the closed position and the handle is in the first position, the stopper is locked in the closed position by the guide pin being positioned in the first portion of the guide groove; After the guide pin enters the second portion from the first portion of the guide groove and is unlocked while the handle is swung from the first position to the second position. The guide pin is moved along the second part of the guide groove so that the stopper is swung to the open position;
An operation portion disposed adjacent to the arm portion of the stopper on the inner edge side of the base end portion of the hook body, and an insertion portion extending from the operation portion between the hook body and the base portion of the stopper. The distal end side of the insertion portion is attached to the intermediate portion of the hook main body by a third pin, and is closest to the hook main body around the third pin and the lock position furthest away from the hook main body. It has a lock lever that can be swiveled between unlocked positions,
The lock lever is provided with an elongated hole extending in the turning direction of the lock lever and through which the first pin is inserted, and an engagement portion capable of engaging with the arm portion of the stopper, When the stopper is in the closed position and the lock lever is in the lock position, the engaging portion is engaged with the arm portion to prevent the stopper from turning to the open position, and the lock lever is When taking the unlock position, the engagement of the engagement portion with the arm portion is released,
A first spring disposed between the hook body and the lock lever and biasing the lock lever toward the lock position;
And a second spring disposed between the hook main body and the handle and biasing the handle toward the first position. The stopper includes a pair of first walls facing each other and a second wall connecting one side edges of a region of the pair of first walls forming the arm portion, and the pair of first walls. An area for forming the base portion is attached to the hook body by the first pin in a state where the intermediate portion of the hook body is fitted between the areas for forming the base portion in the wall of
The lock lever includes a pair of third walls facing each other and a fourth wall that connects one side edges of a region of the pair of third walls forming the operation portion. The region forming the insertion portion in the state of being inserted between the first wall of the stopper and the hook body related to the region forming the insertion portion in the wall of 3 is the hook body by the third pin. The elongated holes are provided in each of the pair of third walls, and the side wall on the side of the fourth wall in the pair of third walls is further extended from the operation portion to the insertion portion. An engagement step portion is formed in the transition region, the engagement portion includes the engagement step portion, and when the stopper is in the closed position and the lock lever is in the lock position, the second of the stopper On the inside of the wall Hook according to claim 1 in which the end of the first pin side is characterized by engaging said engaging Godan unit.   The handle includes a pair of opposing side walls and a connection wall that connects one side edges of the pair of side walls, and the handle is fitted into the hook body from the outside by the second pin. The guide groove is attached to the hook body, the guide groove is provided on each of the pair of side walls of the handle, and the guide pin protruding into the related guide groove is provided on each of the pair of first walls of the stopper. The hook according to claim 1 or 2, wherein the hook is provided.

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