JPS6154712B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hose storage reel for air tools, etc., and more specifically, the present invention relates to a hose storage reel for use in air tools, etc., and more specifically, it is capable of changing the drawing state of the hose as appropriate and keeping the hose drawing force almost constant. This invention relates to a hose storage reel that can be used as a hose storage reel.

[Conventional technology]

2. Description of the Related Art Conventionally, reels for storing hoses have been widely known which are configured to allow the hose to be easily stored within the reel using a spring or the like. However, with this type of conventional hose storage reel, when pulling out the hose from the reel, not only does the pulling force increase the longer the hose is pulled out, but once the hose is let go, The problem is that the hose gets caught up in the reel, and if you want to pull it out again, you have to pull it out from the beginning again.

[Problem that the invention seeks to solve]

The present invention has been made to solve the above-mentioned drawbacks of the conventional hose storage reel, and, like the conventional hose storage reel, the hose can be easily stored in the reel with a spring spring, and the hose can be stored completely in the reel. Alternatively, the pulling back force of the hose (the restoring force of the main spring spring) can be set to zero while a part of the hose is pulled out.Furthermore, this operation can be repeated one after another by pulling out a part of the hose to set the restoring force of the main spring to zero. It is an object of the present invention to provide a hose storage reel capable of pulling out a long hose with a substantially constant tension force.

[Means for solving problems]

A hose groove wheel 8 is provided in the casings 4 and 6, and the hose groove wheel 8 is rotatably supported by a winding shaft 7 which is rotatably supported by the casings 4 and 6. In a hose storage reel in which a mainspring spring 14 is interposed between a shaft 7 and a mainspring spring 14 that is wound when the hose 2 is pulled out from the casings 4 and 6, the winding shaft 7 is made to protrude outside the casings 4 and 6, and the The winding core shaft portion is a square shaft portion 10, and a fixing spring 11 with an intermediate portion wound around the square shaft portion 10 of the winding core shaft 7 is provided, and one end portion 11b of the fixing spring 11 is held by a casing 6. , the other end 11a is locked with the casing 6 with a degree of freedom, and the winding core shaft 7 is tightened by the fixing spring 11 by the elastic force of the fixing spring 11 to fix it to the casings 4 and 6, and the fixing spring 11 By rotating the other end portion 11a, the restraint of the winding shaft 7 by the fixed spring 11 is released, and a handle 5 for rotating the winding shaft 7 by an external force is fixed to the winding shaft 7. A hose storage reel is provided.

[Action of the invention]

The output hose 2 is pulled out with the winding shaft 7 restrained and fixed by the fixing spring 11, which is shown by a solid line in FIG. When the output hose 2 is pulled out, the hose groove wheel 8 rotates, and the mainspring spring 14 is accordingly tightened. When the output hose 2 is released, the output hose 2 is wound onto the storage reel A by the restoring force of the mainspring spring 14.

When the fixed spring 11 is rotated to the position shown by the chain line in FIG. 4 with the output hose 2 pulled out in the above manner, the winding shaft 7
The restraint and fixation of is released and the core shaft 7 becomes free to rotate, and the core shaft 7 rotates and the restoring force of the mainspring spring 14 becomes zero. Therefore, the pullback force of the output hose 2 from the storage reel A side becomes zero, and even if the output hose 2 is released, the output hose 2 will not be wound around the storage reel A. This operation can be performed even when the output hose 2 is partially pulled out.

By pulling out a part of the output hose 2 to make the restoring force of the mainspring spring 14 zero in the above-described manner and repeating this operation, even if the output hose 2 is long, the pulling force can be made almost constant.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings, taking as an example the case where the present invention is implemented in a hose storage reel for an air tool.

In Fig. 1, 1 is an air supply hose, the whole is indicated by A, a storage reel, and 2 is an output hose. flows. The supply hose 1 and the output hose 2 are inserted into a spring 3 to prevent them from being partially bent.

Details of the storage reel A are shown in Figure 2 and below, and the storage reel A is roughly divided into a first casing 4 on the supply hose 1 side, a second casing 6 on the handle 5 side (described later), and both casings 4 and 6 joined together. In this state, the casings 4 and 6 are placed in the center of the
The winding shaft 7 is rotatably supported by a winding shaft 7, a hose groove wheel 8 is rotatably supported on the winding shaft 7, a handle 5 for rotating the winding shaft 7, and the like will be explained in order below.

A rotary joint shaft 9 is provided in the center of the first casing 4, and an air supply hose 1 is detachably connected to the rotary joint shaft 9 as shown in FIG. The core shaft 7 is rotatably supported by the rotary joint shaft 9 and a hole formed in the center of the second casing 6.

The core shaft 7 protrudes outside the second casing 6,
The protruding core shaft portion is a square shaft portion 10 as shown in FIG. Square shaft portion 1 of this core shaft 7
As shown in FIG. 4, the middle part of the fixed spring 11 is wound around the fixed spring 1.
1 is the protrusion 1 of the second casing 6.
The second casing 6 is engaged with the notch formed in the second casing 6.
The other end 11a is held at one end of a relatively long notch formed in the protrusion 12 of the second casing 6 with a degree of freedom. When the fixed spring 11 is in the position shown by the solid line in FIG. When the fixed spring 11 is rotated in the direction of the arrow shown in the figure to the position indicated by the chain line, the restraint of the winding shaft 7 by the fixed spring 11 is released, and the winding shaft 7 can freely rotate.

As shown in FIGS. 2 and 3, a handle 5 is fixedly provided at the end of the winding shaft 7, and the winding shaft 7 can be rotated by the handle 5. However, this operation is limited to when the restraint of the winding shaft 7 by the fixed spring 11 is released and the winding shaft 7 is set in a free state.

As shown in FIGS. 2 and 5, a hose groove wheel 8 is rotatably supported on the winding shaft 7 supported by the casings 4 and 6. A winding groove 13 is formed. A mainspring spring 14 shown in FIG. 6 is disposed inside the hose groove wheel 8, and an inner end 14a of the mainspring spring 14 is engaged with a hook 15 of the winding shaft 7 shown in FIG. Also, the mainspring spring 14
The outer end 14b of the hose groove 8 is engaged with a retaining rod 16 of the hose groove wheel 8 shown in FIG. Therefore, the winding shaft 7 and the hose groove wheel 8 are connected via the mainspring spring 14, and when the winding shaft 7 is fixed in the above manner by the fixing spring 11, the hose groove wheel 8 is connected to the output hose 2. When the mainspring spring 14 is rotated in the drawing direction, the mainspring spring 14 is tightened, and when the rotational force is removed, the hose groove wheel 8 is moved by the restoring force of the mainspring spring 14.
Rotate in the opposite direction and return to the initial position.

The output hose 2 is wound and stored in the hose groove wheel 8, and the starting end 2a of the output hose 2 is connected to the rotary joint shaft 9 as shown in FIG. 5, and the supply hose 1 shown in FIG. The air entering from the rotary joint shaft 9 reaches the output hose 2 through a communication hole 17 of the rotary joint shaft 9 shown in FIG. The output hose 2 is wound around a hose groove sheave 8 and is drawn out from an opening 22 formed at the bottom of the casings 4 and 6, as shown in FIGS. 3 and 4. A pair of idle rollers 18, 18 are provided at the openings of the casings 4, 6 through which the output hoses 2 are drawn out so that the output hoses 2 can be drawn out smoothly from the casings 4, 6.

As shown in FIG. 4, the upper part of the casings 4 and 6 is provided with a mounting hole 20 for attaching the hook 19. The hook 19 is attached to the storage reel A through this mounting hole 20, and the hook 19 is attached to the machine on the ceiling. It can be used by hanging it on a frame, etc. Further, as shown in FIG. 1, a rotating metal fitting 21 is provided at the tip of the output hose 2 for attachment to a tool (not shown).

Next, the operation of the hose storage reel having the above structure will be explained.

When the hook 19 is hooked to the machine frame to suspend the storage reel A and the output hose 2 is pulled, the hose groove wheel 8 of the storage reel A rotates and the output hose 2 can be pulled out. At this time, the mainspring spring 14 is tightened by rotating the hose groove wheel 8 in the hose drawing direction. Connect the output hose pulled out from storage reel A to the air tool and perform the specified work.
When the work is completed and the output hose 2 is let go, the hose groove wheel 8 rotates in the opposite direction to the direction in which the hose is pulled out due to the restoring force of the mainspring spring 14, and the output hose 2 is wound around the hose groove wheel 8, and the casing 4, It is stored in 6.

Normally, the air tool is used as described above, but if you want to remove the tensile force from the storage reel A side that acts on the output hose 2 while using the air tool, rotate one end 11a of the fixed spring 11. Then, the restraint and fixation of the core shaft 7 by the fixing spring 11 is released. Note that if one end 11a of the fixed spring 11 is released, the fixed spring 11 will be released again.
The core shaft 7 is restrained and fixed. As a result, the winding shaft 7 becomes rotatable, and the winding shaft 7 rotates and stands still due to the restoring force of the mainspring spring 14, and the restoring force stored in the mainspring spring 14 becomes zero. Therefore, the tensile force from the storage reel A side no longer acts on the output hose 2. This makes it easier to work with air tools. When storing the output hose 2 on the storage reel A after finishing the work,
One end portion 11a of the fixed spring 11 is rotated to release the restraint and fixation of the winding shaft 7 by the fixed spring 11, making the winding shaft 7 freely rotatable, and the handle 5 is rotated like winding the mainspring of a clock. As a result, the winding shaft 7, the mainspring spring 14, and the hose groove wheel 8 rotate together to wind up the output hose 2. When winding is completed, the fixing spring 11 is released, and the core shaft 7 is restrained and fixed by the fixing spring 11, thereby fixing the core shaft 7 to the casings 4 and 6.

In the above usage example, the restoring force (pullback force) of the mainspring spring 14 is zero when the output hose 2 is almost completely pulled out, but when the output hose 2 is pulled out a little, the mainspring spring 14 is restored. It is also possible to reduce the force to zero. In other words, if the output hose 2 is pulled out by the desired length and one end 11a of the fixed spring 11 is rotated in this state, the winding shaft 7 becomes free to rotate, rotates by the amount that the output hose 2 is pulled out, and comes to rest. The restoring force of the mainspring spring 14 becomes zero. If the fixing spring 11 is released in this state, the winding shaft 7 is fixed, and the output hose 2 also remains stationary at its drawn-out position.
Therefore, in this state, the tensile force of the mainspring spring 14 acting on the output hose 2 becomes zero, and when the output hose 2 is pulled out for use, only a slight tensile force is required. By adopting such a mode of use, even if the length of the output hose 2 to be pulled out becomes long, the hose 2 can be pulled out with a substantially constant pulling force.

〔Effect of the invention〕

As explained above, the present invention uses a rectangular shaft as a part of the core shaft that is the support shaft of the hose groove wheel, winds the middle part of the fixed spring around the rectangular shaft, and attaches one end of the fixed spring to the casing. hold it in
The other end is secured with a casing with a degree of freedom,
Even with a simple structure that includes a handle that rotates the winding shaft using external force, the hose can be easily stored in the reel using a spring spring, similar to conventional hose storage reels, and all or part of the hose can be stored easily. The pulling force of the hose (the restoring force of the mainspring spring) can be made zero when the part is pulled out, and furthermore, by pulling out a part of the hose to make the restoring force of the mainspring zero zero, and repeating the operation sequentially, it is possible to make a long length. Even if the hose is large, it can be pulled out with a substantially constant tension, making it suitable as a hose storage reel for air tools and the like.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view thereof, FIG. 2 is a longitudinal sectional view of only the storage reel, partially cut away, FIG. 3 is a front view of the storage reel, and FIG. 4 is a cross-sectional view of the storage reel. Figure 3 is a front view with the handle removed, Figure 5 is a vertical sectional view showing the inside of the storage reel, Figure 6 is a side view of the mainspring stored in the hose groove wheel, and Figure 7 is the winding core shaft. FIG. 3 is a sectional view of the mainspring spring engaging portion of FIG. A... Storage reel, 1... Supply hose, 2... Output hose, 3... Spring, 4... First casing, 5
...handle, 6...second casing, 7...winding core shaft,
8...Hose groove wheel, 9...Rotary joint shaft, 1
0... Square part of the core shaft, 11... Fixed spring,
12... Projection, 13... Groove, 14... Mainspring spring,
15...Latching part, 16...Latching bar, 17...Communication hole, 1
8...Roller, 19...Hook, 20...Mounting hole, 21
...Rotating metal fittings.

Claims (1)

[Claims] 1 A hose groove wheel is provided in the casing, the hose groove wheel is rotatably supported by a winding shaft rotatably supported by the casing, and the hose is moved from the casing between the hose groove wheel and the winding shaft. In a hose storage reel that is equipped with a mainspring spring that is wound in when being pulled out, the core shaft is made to protrude outside the casing, and the protruding core shaft portion is a square shaft portion, and the square shaft portion of the core shaft is formed into a rectangular shaft portion. A fixed spring is provided with a middle portion wrapped around it, one end of the fixed spring is held by a casing, the other end is locked with the casing with a degree of freedom, and the core shaft is fixed by the elastic force of the fixed spring. In addition to tightening the handle to fix the winding shaft to the casing, the other end of the fixed spring is rotated to release the restraint of the winding core shaft by the fixed spring. A hose storage reel that is fixed to a central shaft.