Suction cup device and lifting device

Abstract

To provide a suction cup device and a hanging tool for making it easy that an operator holds a heavy hanging object by hand and adjusts its position.SOLUTION: The suction cup device 3 comprises a suction cup 31 sucked and attached to a hanging object, a suction cup fitting member 32 to which the suction cup 31 is fitted and a hanging part 30 of which upper part is hanged at a hanging hook of a hoist and supports the suction cup fitting member 32 at a lower part side, and the hanging part 30 has a coil spring 30f for energizing the suction cup fitting member 32 upward in the state of supporting the suction cup fitting member 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a suction cup device and a lifting tool capable of lifting fittings such as sashes. [Background technology]

[0002] When fittings become larger, the burden on each person increases when a small number of people work together to lift the fittings and fit them into the window frame. Also, when the first fitting is already attached to the window frame, the installation space becomes narrow, making it difficult for a large number of people to perform the installation work. Furthermore, there is a demand for speeding up the fitting installation work.

[0003] Furthermore, as a device for mechanically lifting building materials, Patent Document 1 discloses a glass window hanging jig that holds and hangs a glass window while at the same time facilitating the work of installing the glass window onto a structure. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-46824 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the hanging jig of Patent Document 1 mentioned above is a bulky device because it uses a suction cup device with opposing suction cups to clamp both the front and back sides of the glass window.

[0006] On the other hand, if the building fixture hanger is of a simple configuration, when it comes to the final stage of fitting the glass window into the rails of the window frame, a worker will need to manually lift the heavy glass window and adjust its position while fitting the glass window into the rails.

[0007] An object of the present invention is to provide a suction cup device and a lifting tool that make it easy for an operator to adjust the position of a heavy suspended object by holding it with his or her hands. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the suction cup device of the present invention comprises a suction cup which is attached by suction to an object to be suspended, a suction cup mounting member to which the suction cup is attached, and a hooking portion whose upper side is hooked onto a suspension hook and which supports the suction cup mounting member at its lower side, and which is characterized in that the hooking portion has an elastic member which urges the suction cup mounting member upwards while supporting it.

[0009] With the above configuration, when the suspended object is suspended by the lifting machine via the suction cup device and the suspended object is held by hand to fine-tune its height, the elastic member at the hook portion biases the object to be lifted, making the fine-tuning easy. Also, the elastic member absorbs vibrations and shocks that occur when the suspended object is suspended by the lifting machine, preventing the suspended object from coming off the suction cups.

[0010] The elastic member may be a coil spring that becomes shorter than its natural length when the load of the suspended object is applied, thereby generating a biasing force in the upward direction, or that becomes longer than its natural length when the load of the suspended object is applied, thereby generating a biasing force in the upward direction.

[0011] The coil spring may have multiple springs with different spring constants in series, or may have an unequal pitch spring with multiple spring parts with different spring constants. Here, for example, if the spring constant of the coil spring is large, the load borne by the worker changes significantly with a slight change in spring length, making it difficult to lift the suspended object by hand and fine-tune the height, etc. On the other hand, if the spring constant of the coil spring is small, the change in length of the coil spring relative to the load becomes large. By providing multiple coil springs with different spring constants in series as in this configuration, the spring length does not become long, and the fine adjustment can be easily performed. The same can be said for unequal pitch springs.

[0012] A plurality of suction cups may be attached to the suction cup attachment member, and the hook portion may be located at a central position between the suction cups at both ends. In this way, the object to be suspended can be stably suspended by the plurality of suction cups.

[0013] The suction cup includes a suction cup body and a pump section located on the opposite side of the suction surface of the suction cup body, and the pump section may be provided with an operation button that is operated when creating a suction state and that changes position in response to a decrease in suction force over time. This makes it easy to prevent insufficient suction by checking the positional displacement of the operation button while suspending the suspended object.

[0014] The suction cup attachment member may be sandwiched between the suction cup main body and the pump section. In this way, the operation button of the pump section can be seen without being obstructed by the suction cup attachment member, so that the state of the operation button can be properly grasped.

[0015] The suction cup attachment member may have a plate-shaped attachment surface portion located between the suction cup main body and the pump portion, and the attachment surface portion may have a locking portion for locking a horizontal hanging strap that is hung horizontally on a suspended object. This makes it possible to reduce the interference with the operability and visibility of the operation button caused by the horizontal hanging strap that is locked to the suction cup attachment member.

[0016] The pump section may be a cylindrical pump section with its cylindrical center parallel to the mounting surface section, and the mounting surface section may have a rising surface section with a height not exceeding the cylindrical center, and the rising surface section may have a locking section for locking a suspending strap that receives the load of the suspended object when the suction cup is released. This reduces the interference with the operability and visibility of the operation button caused by the rising surface section and the suspending strap.

[0017] The hoist of the present invention is characterized in that it comprises any one of the suction cup devices and a suspending strap that is connected to the suction cup mounting member and receives the load of the suspended object when the suction cup is released. With this, when the suspended object is lifted by hand to fine-tune the height, etc., while the suspended object is suspended by a lifting machine via the suction cup device, the elastic member in the hook portion provides assistance for the lifting, making it easy for the worker to hold the suspended object by hand and fine-tune the height, etc. Effect of the Invention

[0018] The present invention makes it easy for a person to hold a heavy suspended object by hand and adjust the height, etc. It also has the effect of preventing the suspended object from coming off the suction cups due to vibrations or impacts while suspending the suspended object. [Brief description of the drawings]

[0019] [Figure 1] FIG. 11 is an explanatory diagram showing the process of attaching a fixture to a fixture frame using the fixture hanger of the embodiment. [Diagram 2] 1A and 1B are schematic front and side views of a suction cup device according to an embodiment, and a plan view and a bottom view of a suction cup attachment member of the suction cup device. [Diagram 3] 3 is an enlarged front view of the suction cup device shown in FIG. 2. [Figure 4] An explanatory diagram showing the work of attaching a fixture to a fixture frame using a fixture hanger of another embodiment. [Diagram 5] FIG. 2 is a schematic explanatory diagram of a conveyor belt. [Figure 6]6 is an explanatory diagram showing the operation of transporting fittings using the transport belt of FIG. 5. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in Fig. 1, a fitting hoist (hanging device) 100 according to the embodiment is attached to a fitting (sash, etc.) 5, for example, on the indoor side before floor construction, and the fitting 5 is hoisted by a hoist (lifting machine) 7 attached to a beam or the like of a building 8 via the fitting hoist 100. A lower rail is formed on the lower part of the fitting 5, and an upper rail is formed on the upper part. In addition, a lower rail is formed on the lower frame of a fitting frame (window frame, etc.) 6 into which the fitting 5 is fitted, and an upper rail is formed on the upper frame.

[0021] The fitting hanger 100 includes a first suspending strap 1, a second suspending strap 2, and the suction cup device 3 of the embodiment. The suspending straps 1 and 2 can prevent the fitting 5 from falling in the unlikely event that the suction cup of the suction cup device 3 comes off.

[0022] The first sling 1 has an engagement portion 11 that engages with one corner of the bottom edge of the fitting 5. The second sling 2 has an engagement portion 21 that engages with the other corner of the bottom edge of the fitting 5. The first sling 1 and the second sling 2 are made of, for example, a nylon belt sling, and the engagement portions 11, 21 are made of a circular belt portion formed at one end position of the nylon belt sling. Such a circular belt portion can be made by folding back an end of the nylon belt sling and sewing it to the nylon belt sling.

[0023] The suction cup device 3 has two suction cups 31 arranged horizontally and attached by suction to the glass surface of the fitting 5. These two suction cups 31 are fixed side by side to a suction cup attachment member 32 that is long in the horizontal direction. As will be described later, the suction cup 31 has a pump section 31b, and is not connected to a floor-mounted negative pressure generating device by a hose.

[0024] The suction cup device 3 also includes a hook portion 30 to which the hook portion 71 of the hoist 7 is hooked, and hook portions 301, 301 to which the first suspending belt 1 and the second suspending belt 2 are respectively hooked. The hook portion 30 is connected to the center position in the left-right direction of the suction cup attachment member 32. The hook portions 301, 301 are fixed to the left and right end sides of the suction cup attachment member 32.

[0025] The suction cup device 3 is disposed above the vertical center of the fitting 5. In addition, the suction cup device 3 is attached to the glass surface of the fitting 5 so that the left-right center of the fitting 5 is located at the left-right center position of the two suction cups 31.

[0026] The first sling 1 and the second sling 2 are connected, for example, crosswise to the suction cup device 3. This connection can be performed by hooking the looped belt portion at the other end position of the nylon belt sling onto the hook portions 301, 301. The nylon belt sling can also be passed through and engaged with slits 32e, 32f (see FIG. 2) formed in the suction cup attachment member 32 of the suction cup device 3.

[0027] In addition, a horizontal strap (lashing belt) 105 is hung horizontally on the fitting 5. This horizontal strap 105 goes around the rear side of the fitting 5 and passes through the hook portions 301, 301, thereby preventing the fitting 5 from falling over when the suction cup comes off.

[0028] The suction cup device 3 will be described in detail with reference to Figures 2 and 3. The suction cup attachment member 32 in this suction cup device 3 has a plate-shaped attachment surface portion 32a and opposing surface portions (upper surface portions) 32b bent approximately 90 degrees at both the upper and lower edges of the attachment surface portion 32a to face each other.

[0029] The suction cup 31 has a structure in which the suction cup body 31a and the cylindrical pump portion 31b are connected by a bolt 31c, the suction cup body 31a being located on the outer surface side (the side where the hanging object is located) of the mounting surface portion 32a, and the pump portion 31b being located on the inner surface side of the mounting surface portion 32a. The suction cup mounting member 32 and the suction cup 31 are fixed to each other by screwing the bolt 31c in a state in which the suction cup mounting member 32 is sandwiched between the suction cup body 31a and the pump portion 31b in this manner. In this embodiment, the pump portion 31b is arranged so that its cylindrical center is parallel to the mounting surface portion 32a and faces sideways, and an operation button 31d, which will be described later, faces outward. The height of the opposing surface portion (upright surface portion) 32b is set to a height that does not exceed the cylindrical center of the pump portion 31b.

[0030] A distance G between the hanging center of the hook portion 30 and the suction surface of the suction cup 31 is 30 mm or less. In this embodiment, the plate-shaped mounting surface portion 32a of the suction cup mounting member 32 is positioned between the suction cup main body 31a and the pump portion 31b, so that it is easy to make the distance G small.

[0031] A support column 32c having a substantially U-shape in plan view is fixed to the mounting surface 32a by welding or the like at the center of the mounting surface 32a in the left-right direction on the inner side of the mounting surface 32a. The upper side of the support column 32c extends upward through the upper opposing surface 32b. The support column 32c is provided with a horizontal shaft 32d that passes through the vertical center of the mounting surface 32a and extends horizontally parallel to the mounting surface 32a. The horizontal shaft 32d is formed, for example, using a bolt and nut. The suction cup 31 is attached with its center positioned on the axis of the horizontal shaft 32d. The axis center of the horizontal shaft 32d (the suspension center of the hook portion 30) is located closer to the suction cup body 31a than the cylindrical center of the pump portion 31b.

[0032] The hook portion 30 is located inside the support portion 32c. The hook portion 30 has a spring accommodating member 30a, and the lower end side of the spring accommodating member 30a is rotatably connected to the horizontal shaft portion 32d. A shaft guide portion 30b is provided on the upper portion of the spring accommodating member 30a, and a shaft 30c is provided so as to be slidable in the vertical direction through the shaft guide portion 30b. A receiving plate that receives the lower portion of a coil spring (elastic member) 30f is formed on the lower portion of the shaft 30c, and an eye nut 30e is attached to the upper portion of the shaft 30c.

[0033] When the hook portion 71 of the hoist 7 is hooked onto the eye nut 30e and the fitting 5 is lifted, the fitting 5 is lifted by the fitting hoisting device 100 in a state in which the coil spring 30f is compressed in a manner determined by the load of the fitting 5 and the spring constant of the coil spring 30f.

[0034] Then, at the stage where the fitting 5 is finally fitted into the rail of the fitting frame 6, a worker manually lifts the fitting 5 and adjusts its position while fitting the fitting 5 into the rail. At this time, the force of the coil spring 30f due to the contraction of the hook portion 30 provides assistance in the lifting, so the worker can easily make the fine adjustments. In addition, the coil spring 30f reduces vibrations and shocks that occur when the fitting 5 is suspended by the hoist 7, so that the fitting 5 is prevented from coming off the suction cup 31.

[0035] Although the coil spring 30f is arranged so that it becomes shorter than its natural length when the fitting 5 is lifted and generates an upward biasing force, the arrangement is not limited to this. Conversely, the coil spring may become longer than its natural length when the fitting 5 is lifted and generate an upward biasing force. In such a configuration, an eye nut 30e is provided at the upper end of the coil spring, and the lower end of the coil spring is connected to the suction cup attachment member 32.

[0036] Alternatively, the coil spring 30f may be a plurality of coil springs, for example, two coil springs, arranged in series, each having a different spring constant. For example, the two coil springs are made of the same material and have the same diameter, and the wire diameter of the coil spring with the smaller spring constant is made smaller than the wire diameter of the coil spring with the larger spring constant.

[0037] Here, if the spring constant of the coil spring 30f as a single unit is large, the load borne by the worker changes significantly with a slight change in spring length, making it difficult to lift the fitting 5 by hand and fine-tune the height, etc. On the other hand, if the spring constant of the coil spring 30f as a single unit is small, the change in length of the coil spring relative to the load becomes large. By providing multiple coil springs with different spring constants in series, the spring length does not become too long, making it easy to perform the fine adjustments.

[0038] Instead of the coil spring 30f, a non-uniform pitch spring having a plurality of spring portions with different spring constants may be used.

[0039] Moreover, instead of the coil spring 30f, a torsion bar, an air spring, a leaf spring, or the like may also be used.

[0040] When the distance G between the hanging center of the hook portion 30 and the suction surface of the suction cup 31 is 30 mm or less, the force acting on the suction surface of the suction cup 31 in the peeling direction can be made relatively small, making it difficult for the suction cup to come off.

[0041] When a plurality of suction cups 31 are attached to the suction cup attachment member 32 and the hook portion 30 is positioned at the center between the suction cups on both ends, the plurality of suction cups 31 can stably hang an object to be hung.

[0042] In the above embodiment, a sash is exemplified as the fitting 5 to be hung, but the present invention is not limited to this and can also be used to attach fittings such as doors and doors to fitting frames.

[0043] Furthermore, in the above example, the suction cup device 3 has two suction cups 31, but it may have one or three or more suction cups.

[0044] Incidentally, the pump section 31b is provided with an operation button 31d, which is pumped when a suction state is generated as shown in FIG. 2 and displaces in the protruding direction according to the decrease in suction power over time. A commercially available product can be used for the suction cup 31 with the operation button 31d. By using the suction cup 31 with the operation button 31d, it becomes easy to check the positional displacement of the operation button 31d when the fitting 5 is suspended by the suction cup device 3 and prevent insufficient suction beforehand. In this embodiment, a red line or the like is attached to the operation button 31d, and when the operation button 31d displaces in the protruding direction due to the decrease in suction power over time, the line becomes visible. In the fitting hanger 100, even if the suction of the suction cup device 3 is insufficient, the fitting 5 can be prevented from falling by the first hanging belt 1 and the second hanging belt 2, so that the notification of insufficient suction by the operation button 31d is not essential, but having the operation button 31d is significant in preventing the suction cup from coming off as much as possible. Even during the lifting operation, the suction force can be restored by pumping the operation button 31d, thereby preventing the suction cup from coming off.

[0045] The suction cup attachment member 32 is sandwiched between the suction cup main body 31a and the pump part 31b. This allows the operator to see the operation button 31d of the pump part 31b without being blocked by the suction cup attachment member 32, so that the operator can properly grasp the state of the operation button 31d.

[0046] The suction cup attachment member 32 has a plate-shaped attachment surface portion 32a located between the suction cup main body 31a and the pump portion 31b, and opposing surface portions (upright surface portions) 32b located on both upper and lower edges of the attachment surface portion 32a and extending parallel to the longitudinal direction (cylinder center direction) of the pump portion 31b while being spaced apart from the pump portion 31b. The opposing surface portions 32b can increase the strength of the suction cup attachment member 32.

[0047] The mounting surface portion 32a has a slit 32f as a locking portion for locking the horizontal hanging band 105 that is hung horizontally on the fitting 5. The facing surface portion 32b has a height that does not exceed the cylindrical center of the pump portion 31b, and the facing surface portion 32b has a slit 32e as a locking portion for locking the hanging bands 1 and 2 that receive the load of the fitting 5 when the suction cup 31 is released. FIG. 4 shows an example of locking the horizontal hanging band 105 using the slit 32f. In FIG. 4, the first hanging band 1 and the second hanging band 2 are locked using the slit 32e formed in the facing surface portion 32b located on the lower side. By using the slit 32e and the slit 32f, as can be seen from FIG. 4, it is possible to reduce the obstruction of the operability and visibility of the operation button 31d caused by the facing surface portion (standing surface portion) 32b, the first hanging band 1, the second hanging band 2, and the horizontal hanging band 105. In this embodiment, the slits 32f are inclined with respect to the vertical direction, but this is not limiting, and the slits 32f may be formed straight in the vertical direction.

[0048] FIG. 5 shows a lifting belt 9 for carrying in, which is used for lifting a fitting 5 from a loading platform of a truck or the like outdoors with a crane or the like and lowering it into a building. As shown in FIG. 6, the lifting belt 9 for carrying in includes a hook belt part 91 having loop parts 91a at both ends, and support belt parts 92, 93 connected to the hook belt part 91. A worker can place the center of the hook belt part 91 in the longitudinal direction on the bottom surface of the fitting 5 and hook the loop part 91a onto a hook of a crane or the like. Then, in such a state where the hook belt part 91 is hooked onto the hook, the support belt parts 92, 93 can wrap around the side edge side of the fitting 5 and support the side edge. The fitting 5 can be lifted by using two of the lifting belts 9 for carrying in.

[0049] In addition, both ends of the support belt parts 92 and 93 are sewn at positions equidistant from the center of the hook belt part 91 in the longitudinal direction at a non-right angle (for example, inner angle A = about 75 degrees) to the extension direction of the hook belt part 91. When the hook belt part 91 is hooked on the hook and takes an oblique position, the support belt parts 92 and 93 are positioned approximately parallel (approximately horizontal) to the bottom edge part of the fitting 5 across both sides of the fitting 5. The two delivery suspension belts 9 are of the same shape, and when the two delivery suspension belts 9 are hung symmetrically and properly on the fitting 5, the position where the longitudinal center of the hook belt portion 91 touches the bottom of the fitting 5 will be equal to both edges of the bottom of the fitting 5 for both delivery suspension belts 9, and since the ring portion 91a can be positioned on a vertical line passing through the left-right center of the fitting 5, it becomes easy to check whether the ring portion 91a is located on the center of gravity of the fitting 5.

[0050] The support belt portion 92 is longer than the support belt portion 93, and when the hooking belt portion 91 is hooked onto the hook, the support belt portion 92 is positioned above the support belt portion 93 and across both sides of the fitting 5. These support belt portions 92, 93 prevent the fitting 5 from slipping off, tipping over, or deformation of both lower ends of the fitting 5 when it is brought in.

[0051] Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0052] 1: First suspension strap 2: Second suspension belt 3: Suction cup device 5: Fittings (for hanging) 6: Door and window frame 7: Hoist (lifting machine) 8: Building 9: Lifting belt for loading 11: Engagement part 21: Engagement part 30: Hook 30a: Spring housing member 30b: Shaft guide part 30c: shaft 30e: Ainat 30f: Coil spring 31 :Sucker 31a: Suction cup body 31b: Pump section 31c: Bolt 31d: Operation button 32: Suction cup mounting material 32a: Mounting surface part 32b: Opposing surface part (upright surface part) 32c: Support section 32d: Horizontal shaft 32e: Slit (locking part) 32f: Slit (retaining part) 71: Hook part 91: Hook belt part 91a : limbus 92: Support belt section 93: Support belt part 100: Fixtures and hangers (hangers) 105: Horizontal belt 301: Hook part G: Spacing

Claims

1. A suction cup that is attached to the object to be hung; a suction cup attachment member to which the suction cup is attached; a hook portion whose upper side is hooked onto a hanging hook and whose lower side supports the suction cup mounting member, the hook portion has an elastic member that urges the suction cup attachment member upward while supporting the suction cup attachment member, the elastic member is a coil spring that becomes shorter than its natural length when the load of the suspended object is applied, thereby generating a biasing force in the upward direction, or that becomes longer than its natural length when the load of the suspended object is applied, thereby generating a biasing force in the upward direction, A suction cup device characterized in that the coil spring has a plurality of springs connected in series with different spring constants, or the coil spring has an unequal pitch spring having a plurality of spring portions with different spring constants.

2. 2. The suction cup device according to claim 1, wherein a plurality of suction cups are attached to the suction cup attachment member, and the hook portion is located at a central position between the suction cups on both ends.

3. A suction cup that is attached to a suspended object by suction; a suction cup attachment member to which the suction cup is attached; a hook portion whose upper side is hooked onto a hanging hook and whose lower side supports the suction cup mounting member, the hook portion has an elastic member that urges the suction cup attachment member upward while supporting the suction cup attachment member, the suction cup comprises a suction cup body and a pump section located on the opposite side of the suction surface of the suction cup body, the pump section being provided with an operation button which is operated when a suction state is generated and which changes position in accordance with a decrease in suction force over time, The suction cup device is characterized in that the suction cup attachment member is sandwiched between the suction cup main body and the pump portion.

4. 4. The suction cup device according to claim 3, wherein the suction cup mounting member has a plate-shaped mounting surface portion located between the suction cup main body and the pump portion, and the mounting surface portion has a locking portion for locking a horizontal hanging band to be hung horizontally on the suspended object.

5. 5. The suction cup device according to claim 4, wherein said pump section is a cylindrical pump section positioned with its cylindrical center parallel to said mounting surface section, said mounting surface section is formed with a rising surface section having a height not exceeding said cylindrical center, and said rising surface section has a locking section for locking a suspension belt which receives the load of said suspended object when said suction cup is released.

6. A suction cup device according to any one of claims 1 to 5, a suspension belt connected to the suction cup attachment member and configured to receive the load of the suspended object when the suction cup is released; A sling equipped with:

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