JP3679946B2 - Hook device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, when a framework such as a scaffold or a work table (for example, a tower) is formed by a shaft member such as a pipe, a support member spanned between support members, a ladder temporarily installed at a required position, or an end portion of a scaffold plate, etc. The present invention relates to a hook device used for hooking a shaft on the shaft member.
[0002]
[Prior art]
Conventionally, as a hook device of this type, a hook main body having a substantially U-shaped fitting portion that is detachable with respect to a pipe (shaft member) such as a support member or a cross member that forms a framework for a scaffold, a work table, and the like, A lock member with a lock piece integrally formed on the hook and swingably attached to the hook body, and a lock posture in which the lock piece enters the entrance / exit side of the fitting portion and the hook body is fixed to the pipe Some of them are composed of a spring interposed between the lock member and the hook body so as to hold the spring.
[0003]
In this hook device, when the lock member is always held in the locked posture and the fitting portion is fitted to the pipe in the locked posture, the lock piece is pushed by the pipe and temporarily from the entrance of the fitting portion. After retreating, it enters again and returns to the locked posture, and when the hook body is pulled away from the pipe in this state, the lock body is pushed by the pipe and temporarily retracted as in fitting, so the hook body comes off the pipe, The lock member returns to the locked posture.
[0004]
[Problems to be solved by the invention]
In the conventional hook device, the lock member is held in the locked posture by the spring, but is not held in the unlocked posture. For example, a plurality of hook devices such as scaffolding plates are attached at positions separated from each other. In some cases, two or more workers were required to remove these hook devices from the pipe.
[0005]
The present invention enables the lock member to be held in the unlocked posture, so that when removing the plurality of hook devices, if the lock member of each hook device is set in the unlocked posture in advance, one worker will be used thereafter. A hook device is provided that can be removed with a fitting member and can be engaged with a shaft member such as a pipe regardless of the position of the locking member, and can be locked as it is due to the fitting operation. The purpose is to do. In addition, although the shaft material in this invention mainly targets a pipe (hollow circular pipe material), it is not limited to this, It is applied also to shaft materials, such as a round bar (solid circle rod material).
[0006]
[Means for Solving the Problems]
The hook device according to claim 1 integrally forms a hook body 3 having a fitting portion 2 that can be freely fitted to and removed from a shaft member P that forms a framework for a scaffold, a work table, and the like, and a lock piece 4 and an operating piece 5. The lock member 6 swingably attached to the hook body 3 and the lock posture in which the lock member 4 enters the entrance / exit side of the fitting portion 2 to fix the hook body 3 to the shaft member P. The lock piece 4 is retracted and the operating piece 5 is interposed between the lock member 6 and the hook body 3 so as to be held in any one of the unlocking postures that enter the back side of the fitting portion 2. The hook body 3 is formed by a string spring 7 and a pair of halves 3a and 3b made of an aluminum extruded mold each having a substantially U-shaped cross section are abutted so that the U-shaped opening side faces each other, and a lock member is interposed therebetween. 6 is formed by rivet joining and locking The material 6 is formed with a substantially L-shaped guide groove 12 composed of a long groove portion 12a and a short groove portion 12b. The guide groove 12 is composed of a rivet shaft that rivets the halves 3a and 3b. The two guide shafts 14 and 14 are passed, and the lock member 6 assumes a locked posture when both guide shafts 14 and 14 are in the long groove 12a of the guide groove 12, and this locked posture is held by the chord spring 7. The unlocking posture is established by leaving one guide shaft 14 in the long groove portion 12a and engaging the other guide shaft 14 with the short groove portion 12b, and this unlocking posture is also held by the string spring 7; the lock member 6, when fitting the left fitting portion 2 of the lock posture Jikuzai P is returned to the locking position after the lock member 4 is retracted halfway pressed by shaft member P Te,該Ro Click position is held by the helical spring 7, when fitting the fitting portion 2 to Jikuzai P remains unlocked position, the actuating piece 5 so changes to pressed and locked position in the axial material P It is characterized by being.
[0007]
According to a second aspect of the present invention, in the hook device according to the first aspect, the hook body 3 is opposed to the U-shaped opening side by a pair of halves 3a and 3b each made of an aluminum extrusion mold having a substantially U-shaped cross section. It is characterized by being butt-joined.
[0008]
According to a third aspect of the present invention, in the hook device according to the first or second aspect, the lock member 6 is formed by cutting an aluminum extruded mold having a required cross-sectional shape by a required thickness in the longitudinal direction. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an assembly work table K made of aluminum pipes, and according to the present invention, each end of a horizontal brace a, an oblique brace b, a staircase c, a scaffold plate d, etc. A hook device 1 is used, and each hook device 1 is hooked and fixed to a pipe P that is a shaft member constituting the work table K. FIG. 2 shows a state in which hook devices 1 are attached to both ends of a frame e such as a staircase c. FIGS. 3 to 7 show a detailed structure of the hook device 1.
[0010]
As can be seen from FIG. 3 to FIG. 5, the hook device 1 is integrally formed with a hook body 3 having a substantially U-shaped fitting portion 2 that can be fitted to and detached from the pipe P, a lock piece 4 and an operating piece 5. Then, the lock member 6 swingably attached to the hook main body 3 and the lock member 6 are connected to the lock member 6 as shown in FIG. 3B and FIG. A locking posture that enters the entrance / exit side and fixes the hook body 3 to the pipe P, and the locking piece 4 is retracted from the fitting portion 2 and the operating piece 5 is behind the fitting portion 2 as shown in FIG. It is constituted by a string spring 7 interposed between the lock member 6 and the hook body 3 so as to be held in any posture of the unlocking posture that rushes into the part side.
[0011]
The hook body 3 is butt-joined by a pair of halves 3a and 3b made of an aluminum alloy extrusion mold material each having a substantially U-shaped cross section so that the U-shaped opening side faces each other. 3A is shown in FIGS. 4A to 4D, and the other half 3b is shown in FIGS. 5A to 5C. Both halves 3a and 3b have a symmetrical shape, and a substantially U-shaped fitting portion 2 is formed on one end side of each, and rivet holes 8 to 11 are provided at required positions. . In this way, when the hook body 3 is formed by abutting and joining the pair of halves 3a, 3b made of an aluminum extruded mold so that the U-shaped opening side faces each other, the hook body is produced by casting. In comparison, the production cost can be greatly reduced.
[0012]
As shown in FIGS. 6A to 6C, the lock member 6 is formed by cutting an aluminum alloy extruded mold having a substantially Y-shaped section in the longitudinal direction by a required thickness. As shown in (A) of the figure, it has a lock piece 4 and an actuating piece 5 and a substantially L-shaped guide groove 12 composed of a long groove portion 12a and a short groove portion 12b. Further, a manual operation unit 13 is formed adjacent to the lock piece 4, and a fingertip is engaged with the manual operation unit 13 to perform a push / pull operation. If the lock member 6 is also formed by cutting the aluminum extrusion mold material to the required thickness in the longitudinal direction, the manufacturing cost can be greatly reduced compared to the case of manufacturing by casting.
[0013]
In order to assemble the hook device 1 including the hook body 3, the lock member 6, and the spring 7 as described above, the lock member 6 is disposed between the pair of halves 3 a and 3 b forming the hook body 3. The two rivet holes 8, 8 at the center in the longitudinal direction of the halved body 3 a through the guide groove 12 of the lock member 6 and the corresponding two rivet holes 8, 8 of the other half body 3 b The rivet shafts 14, 14 are inserted through the rivet shafts 15, 16, from the rivet holes 9, 10, 10 of one half 3 a to the corresponding rivet holes 9, 10, 10 of the other half 3 b, 16 is inserted into the rivet shaft 15, and the one end 7 a is engaged with the halves 3 a and 3 b and the other end 7 b is engaged with the lock member 6. (See FIG. 7) However, these rivet shafts 1 By caulking the one end of each to 17, both halves 3a, with joining 3b, mounting the helical spring 7 and the locking member 6. The rivet shaft 14 passed through the guide groove 12 of the lock member 6 is used as a guide shaft. The rivet hole 11 is for passing a rivet shaft or the like when the hook device 1 is attached to the end of the frame e as shown in phantom lines in FIG.
[0014]
In the hook device 1 thus assembled, when the two guide shafts 12 and 12 passed through the guide groove 12 of the lock member 6 are both in the long groove portion 12a as shown in FIG. The member 6 has a locking posture in which the operating piece 5 is retracted from the fitting portion 2 and the lock piece 4 enters the entrance / exit side of the fitting portion 2 to fix the hook body 3 to the pipe P. This locked posture is held by the string spring 7.
[0015]
From the locking posture as shown in FIG. 7A, the lock member 6 is appropriately moved by the manual operation unit 13, and one of the two guide shafts 12 and 12 as shown in FIG. By engaging the other guide shaft 12 with the short groove portion 12b while leaving the inside of the long groove portion 12a, the lock member 6 is retracted from the entrance / exit of the fitting portion 2 and at the same time the operating piece 5 is The unlocking posture enters the back side of the fitting portion 2. This unlocking posture is also held by the string spring 7.
[0016]
The usage mode and operation of the hook device 1 configured as described above will be described below with reference to FIGS.
[0017]
FIG. 8 shows a case where the fitting portion 2 is fitted to the pipe P while the lock member 6 is held in the locked posture. As shown in (1) and (2) in FIG. When the fitting part 2 of the hook body 3 is pressed onto the pipe P from above with the locking posture, the lock piece 4 that has entered the entrance / exit of the fitting part 2 is moved to the pipe P at the entrance / exit of the fitting part 2. As the fitting portion 2 is engaged with the pipe P, the fitting portion 2 re-enters the entrance / exit of the fitting portion 2 and returns to the locked position as indicated by (3) in FIG. The main body 3 can be fixed to the pipe P.
[0018]
FIG. 9 shows a case where the fitting portion 2 is fitted to the pipe P while the lock member 6 is held in the unlocked posture, and as shown in (1) of FIG. If the fitting part 2 of the hook body 3 is pressed from above onto the pipe P as it is, the operating piece 5 that has entered the back side of the fitting part 2 is pushed by the pipe P, and 2), the guide shaft 12 engaged with the short groove portion 12b moves to the long groove portion 12a side, and the two guide shafts 12 and 12 are engaged with the long groove portion 12a. The member 6 changes its posture from the unlocked posture to the locked posture, and fixes the hook body 3 fitted to the pipe P. The locked posture is held by the string spring 7.
[0019]
As shown in FIGS. 8 and 9, even if the lock member 6 is in either the locked position or the unlocked position, the fitting member 2 of the hook body 3 is pushed into the pipe P from above to lock it as it is. The hook body 3 can be fixed to the pipe P in the posture.
[0020]
FIG. 10 shows that the lock member 6 is unlocked and the hook body 3 is detached from the state in which the fitting portion 2 is fitted to the pipe P and the lock member 6 is locked and the hook body 3 is fixed to the pipe P. This is the case. In this case, first, as shown in (1) in the figure, while the lock member 6 is pulled up in the arrow direction of the figure by the manual operation portion 13, the hook body 3 is moved to the pipe P as shown in (2) in the figure. When the manual operation unit 13 is released from the upper side, the lock member 6 returns to the original locked position by the string spring 7 and is held in the locked position as shown in FIG.
[0021]
In FIG. 11, the lock member 6 is unlocked from the state in which the fitting portion 2 is fitted to the pipe P and the lock member 6 is fixed to the pipe P in the locked posture, and the hook body 3 is In this case, as shown in (1) in the figure, as shown in (2) in the figure, the lock member 6 is pulled up in the direction of the arrow by the manual operation unit 13 as shown in (1) in the figure. The hook body 3 is pulled upward from the pipe P and at the same time the lock member 6 is pulled to the right in the figure to switch the lock member 6 from the locked position to the unlocked position. It is held by a spring 7.
[0022]
As shown in FIGS. 10 and 11, by pulling the lock member 6, the hook body 3 can be extracted from the pipe P in the locked position, and by further pulling the lock member 6, the hook body can be removed from the pipe P. After extracting 3, the lock member 6 can be held in the unlocked posture.
[0023]
【The invention's effect】
According to the hook device of the first aspect of the invention, since the lock member can be held in the locked posture and also in the unlocked posture, a plurality of hook devices are attached at positions separated from each other, for example, as a scaffold plate. In this case, when removing the hook devices from the shaft member, if the lock members of the respective hook devices are sequentially held in the unlocking posture, all the hook devices are lifted together by lifting the scaffolding plate. Because it can be removed from, it can be removed alone.
[0024]
Further, according to this hook device, even when the lock member is in the locked posture or in the unlocked posture, the hook body fitting portion can be fitted to the shaft member, and the hook body remains in the locked posture. Is automatically fixed to the shaft member, so that the use of the apparatus is very simple and the workability can be improved, the forgetting to lock is eliminated, and the safety can be improved.
[0025]
As described in claim 2, if the hook body is formed by butt joining so that the U-shaped opening side faces each other by a pair of halves made of an aluminum extrusion mold having a substantially U-shaped cross section, Compared with the case where the hook body is manufactured by casting, the manufacturing cost can be greatly reduced.
[0026]
According to claim 3, if the lock member is formed by cutting an aluminum extrusion mold having a required cross-sectional shape by a required thickness in the longitudinal direction, the lock member is manufactured as compared with the case where the lock member is manufactured by casting. Cost can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an assembly work table in which a hook device according to the present invention is used.
2A is a plan view of a state where hook devices are attached to both ends of a frame, and FIG. 2B is a front view thereof.
FIG. 3 is a plan view of the hook device, (B) is a front view, (C) is a bottom view, (D) is a left side view, and (E) is a right side view.
4A is a front view showing one half of the halves forming the hook body, FIG. 4B is a left side view, FIG. 4C is a right side view, and FIG. 4D is a bottom view.
5A is a front view showing the other half body forming the hook body, FIG. 5B is a left side view, and FIG. 5C is a right side view.
6A is a front view showing a lock member, FIG. 6B is a left side view, and FIG. 6C is a right side view.
FIGS. 7A and 7B are front views showing the structure of the hook device in a state in which one half is removed, where FIG. 7A shows a state in which a locking member is in a locked position, and FIG. Indicates.
FIGS. 8A to 8C are explanatory views showing a use form when the fitting portion is fitted to the pipe (shaft member) while the lock member is held in the locked posture.
FIGS. 9A to 9C are explanatory views showing a usage pattern when the fitting portion is fitted to the pipe while the lock member is held in the unlocking posture.
FIGS. 10A to 10C are views illustrating a usage mode in the case where the lock member is held in the lock posture after the hook body is detached from the state in which the lock member is locked to the pipe in the lock posture. FIG.
FIGS. 11A to 11C show usage forms when the lock member is held in the unlocking posture after the hook body is detached from the state where the lock member is locked to the pipe in the locking posture. It is explanatory drawing.
[Explanation of symbols]
P pipe (shaft material)
DESCRIPTION OF SYMBOLS 1 Hook apparatus 2 Fitting part 3 Hook main body 3a, 3b Half split body 4 Lock piece 5 Actuation piece 6 Lock member 7 Spring

Claims (2)

A hook body having a fitting portion that is freely detachable with respect to a shaft member that forms a framework of a scaffold, a work table, etc .; and a lock member that is integrally formed with a lock piece and an operating piece and is swingably attached to the hook body. The lock member has a lock posture in which the lock piece enters the entrance / exit side of the fitting portion and the hook body is fixed to the shaft member, and the lock piece is retracted and the operating piece enters the back side of the fitting portion. It consists of a string -wound spring interposed between the lock member and the hook body so as to be held in any of the released positions, and the hook body is made up of a pair of halves made of an aluminum extrusion mold having a substantially U-shaped cross section. The body is abutted so that the U-shaped opening faces each other, and a lock member is arranged between them to form a rivet joint. The lock member has a substantially L-shaped guide groove comprising a long groove portion and a short groove portion. Is formed in this guide groove Serial two guide shafts both halves consists of the rivet shaft being riveted is passed, the locking member, the guide shafts are both in the locked position when in the long groove portion of the guide groove, the locking posture the held by helical spring, leaving one of the guide shaft in the elongated groove Ri Do an unlocked position by engaging the other guide shaft Tanmizo unit, the lock release posture is held again by the helical spring, Thus the locking member, when fitting the left fitting portion of the lock posture shaft member is Rutotomoni back to the lock position after the lock piece is retracted halfway pressed by a shaft member, the lock posture the helix A hook device that is held by a spring and is configured such that when the fitting portion is fitted to the shaft member in the unlocked posture, the operating piece is pushed by the shaft member to change to the locked posture.   The hook device according to claim 1, wherein the lock member is formed by cutting an aluminum extruded mold having a required cross-sectional shape by a required thickness in a longitudinal direction thereof.

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