JP6972550B2 - Air duster structure - Google Patents

Description

The present invention relates to an air duster structure in which air is ejected from an ejection port using compressed air supplied from the outside.

Conventionally, an air duster gun or an air duster attached to a driving tool has been used to blow off fine wood chips and the like before driving a nail. For example, Patent Document 1 discloses a driving tool with an air duster. The invention described in Patent Document 1 is configured to eject air from an ejection port by pressing an operation button for opening and closing the release valve.

Japanese Unexamined Patent Publication No. 10-109280

By the way, in the conventional air duster as described above, the air volume is adjusted in advance by using a variable throttle arranged near the air supply port, and after adjusting the air volume with the variable throttle, the operation is performed. It was configured so that a constant air volume could be obtained regardless of the amount of button operation.

However, in a configuration in which the air volume is adjusted with a variable throttle, it is difficult and troublesome to adjust the air volume to a desired value, and the user may not notice the function of adjusting the air volume in the first place.

Therefore, it is an object of the present invention to provide an air duster structure capable of adjusting the air volume by an intuitive and simple operation and obtaining a stable air volume after the adjustment.

The present invention has been made to solve the above-mentioned problems, and is characterized by the following.

The invention according to claim 1 is provided in a driving tool in which a fastener is driven by gripping and gripping the grip and pulling a trigger so that the amount of air ejected changes according to the operation amount of the operation unit. The configured air duster structure includes a regulating unit that regulates the maximum operating amount of the operating unit, the maximum operating amount can be adjusted, and the restricting unit has a plurality of engagements that can be engaged with the operating unit. A portion is provided so that the maximum operation amount of the operation portion is determined by which of the plurality of engagement portions the operation portion engages with, and the operation portion and the regulation portion are placed on the side surface of the driving tool. It is characterized by being provided.

In the invention according to claim 2, in addition to the feature points of the invention according to claim 1, the maximum operation amount of the operation unit can be adjusted by changing the relative position between the operation unit and the regulation unit. It is characterized by the fact that.

In the invention according to claim 3, in addition to the feature points of the invention according to claim 1 or 2, the operation unit is arranged so as to protrude from the side surface of the machine body, and the regulation unit is the operation unit. It is characterized in that it is provided so as to be accessible to and from the side surface of the machine body.

The invention according to claim 4 has, in addition to the feature of the invention according to claim 3 , the restricting portion is attached to the side surface of the machine body via a rotating shaft located off the center of the operating portion. It is characterized by being rotatably attached.

The invention according to claim 5 includes, in addition to the feature points of the invention according to claim 1 or 2 above, the operating portion includes a protruding engaging portion in which a part of the peripheral edge portion is projected in the outer peripheral direction. It is characterized in that the maximum operating amount of the operating portion can be adjusted by rotating the operating portion and depending on which of the plurality of engaging portions the protruding engaging portion engages.

The invention according to claim 1 is as described above, and includes a regulating unit that regulates the maximum operating amount of the operating unit, so that the maximum operating amount can be adjusted. According to such a configuration, a stable air volume can be obtained only by pushing the operation unit all the way after adjusting the maximum operation amount.

The invention according to claim 2 is as described above, and the maximum operation amount of the operation unit can be adjusted by changing the relative position between the operation unit and the regulation unit. According to such a configuration, the air volume can be adjusted by an intuitive operation of restricting the movement of the operation unit itself. Further, since the regulation unit is provided near the operation unit, the adjustment is easy.

Further, the invention according to claim 1 is as described above, and the maximum operation amount of the operation unit is determined depending on which of the plurality of engagement points the operation unit engages with. According to such a configuration, the function of adjusting the air volume can be realized with a simple structure.

Further, the invention according to claim 3 is as described above, and the regulation unit is provided between the operation unit and the side surface of the machine body. With such a configuration, since the regulated portion can be visually observed, the air volume can be intuitively adjusted.

Further, the invention according to claim 5 is as described above, and the maximum operation amount of the operation unit can be adjusted by rotating the operation unit. According to such a configuration, the air volume can be adjusted with a simple operation. In addition, since the air duster can be turned on and off and the air volume can be adjusted with one operation unit, the function can be realized with a small number of parts.

Further, the invention according to claim 4 is as described above, and the maximum operation amount of the operation unit can be adjusted by rotating the regulation unit. According to such a configuration, the air volume can be adjusted with a simple operation.

It is a right side view of a driving tool provided with an air duster structure. It is a left side view of a driving tool provided with an air duster structure. It is a cross-sectional view of AA of a driving tool. It is a left side view of the driving tool which removed the tip cover member and the side cover member. It is (a) the perspective view seen from the back side and (b) the perspective view seen from the front side of the tip cover member. It is a perspective view which saw the driving tool from the bottom. (A) is an external view of an operation part and a regulation part, and (b) is a sectional view of a flow rate adjustment mechanism. It is a sectional view of the operation part and the regulation part, (a) the figure before the operation when it is regulated by the 1st engagement part, (b) the figure after the operation when it is regulated by the 1st engagement part, (c). ) The figure before the operation when regulated by the second engaging part, (d) the figure after the operation when regulated by the second engaging part, (e) the figure before the operation when regulated by the third engaging part. It is a figure, (f) the figure after the operation when it is regulated by the 3rd engaging part, (g) the figure before the operation when it is not regulated, (h) the figure after the operation when it is not regulated. It is (a) external view of the operation part and regulation part, and (b) the sectional view of the flow rate adjustment mechanism which concerns on a modification. It is an external view of the operation part and the regulation part which concerns on the modification, it is the figure when (a) is regulated by the 2nd engagement part, and (b) is the figure when it is regulated by the 1st engagement part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiment, as an example of using the air duster structure, the driving tool 10 provided with the air duster structure is taken as an example, but the method is not limited to this, and the air duster structure according to the present embodiment is applied to other tools and the like. May be good. For example, the air duster structure according to the present embodiment may be applied to the air duster gun.

The driving tool 10 according to the present embodiment uses compressed air supplied from the outside to launch a fastener, and has an air duster structure that ejects air from an ejection port 17b using compressed air supplied from the outside. It is equipped with. By providing the driving tool 10 with an air duster structure in this way, it is possible to perform driving with a fastener and cleaning with an air duster without having to change the tool.

As shown in FIG. 1, the driving tool 10 is operably provided on a tool body 11 having a striking mechanism inside, a grip 12 provided so as to project in a direction orthogonal to the tool body 11, and a grip 12. The trigger 13 is provided, the nose portion 14 is provided so as to project to the tip of the tool body 11, the magazine 15 is connected to the rear of the nose portion 14, and the air duster structure can be operated by pressing. The operation unit 30 is provided.

The striking mechanism built into the tool body 11 operates the driver by utilizing the force of compressed air. The driver is movable in the direction of the nose portion 14 in order to launch the fastener, and moves in the driving direction of the fastener when the striking mechanism generates an impact force. The driver who has moved in the driving direction launches the fastener set in the nose portion 14. The fastener launched by the driver is ejected from the ejection port 14a opened at the tip of the nose portion 14.

When using this driving tool 10, the grip 12 is grasped and gripped, and the trigger 13 is pulled. By this operation, the above-mentioned striking mechanism is activated and the fastener is launched.

A connecting fastener is housed in the magazine 15, and the fastener at the head of the connecting fastener is sequentially supplied in the direction of the nose portion 14 (directly below the driver before the driving operation).

The compressed air for operating the impact mechanism and the air duster structure described above is supplied from an air supply source such as an air compressor. Specifically, an air supply air hose connected to a compressor or the like is connected to an end cap portion 16 provided at the rear end of the grip 12, and compressed air is supplied via this air hose. The compressed air supplied from the end cap portion 16 passes through the air supply path formed inside the grip 12 and is supplied to the striking mechanism or the air duster structure.

In the striking mechanism, when the trigger 13 is operated, compressed air is supplied into the striking cylinder, and this compressed air acts on the striking piston to drive the striking piston, and the driver coupled to the striking piston pushes the nail. Hit.

In the air duster structure, when the operation unit 30 is operated, compressed air is ejected from the ejection port 17b that opens near the nose portion 14. As shown in FIG. 1, the operation unit 30 according to the present embodiment is arranged at a position where the operator can operate the grip 12 by the hand holding the grip 12. Specifically, when the grip 12 is gripped by the right hand, it is arranged at a position where it can be operated by the thumb of the right hand.

As shown in FIGS. 3 and 4, the above-mentioned air duster structure includes a flow rate adjusting mechanism provided inside the housing of the tool body 11. On the downstream side of this flow rate adjusting mechanism, an air take-out port 40 for taking out air is provided outside the housing. A duster pipe 42 extending in the direction of the tip of the tool body 11 (that is, the direction of the nose portion 14) is connected to the air outlet 40. More specifically, the duster pipe 42 is connected to the air outlet 40 via a rotatably provided joint component 41.

The air take-out port 40 is arranged on the side surface of the tool body 11 on the side opposite to the operation unit 30. The duster pipe 42 and the joint component 41 connected to the air outlet 40 are arranged outside the housing of the tool body 11, but as shown in FIG. 2, the tip cover member 17 covering the tip of the tool body 11 And, it is covered by the side cover member 18 arranged at a position covering the air outlet 40.

As shown in FIGS. 5 and 6, a pipe holding portion 17a for holding the tip portion 42a of the duster pipe 42 is provided on the back surface side of the tip cover member 17, whereby the tip portion 42a of the duster pipe 42 is provided. Is fixed by the tip cover member 17. Since the duster pipe 42 is a flexible tube made of resin or the like and can be elastically deformed, it can be easily assembled to the pipe holding portion 17a.

Further, as shown in FIGS. 5 and 6, an air ejection port 17b is opened on the surface side of the tip cover member 17. The air ejection port 17b communicates with the above-mentioned pipe holding portion 17a. In this way, the tip cover member 17 is provided with an air ejection port 17b that communicates with the duster pipe 42, so that air is ejected from the ejection port 17b when the operation unit 30 is operated. ..

The flow rate adjusting mechanism is for changing the amount of air ejected from the ejection port 17b according to the pushing amount of the operation unit 30, and as shown in FIG. 7, forms a pipeline 23 for circulating air. The pipeline forming portion 20 to be formed, the valve body 31 arranged in the conduit 23 and movable, the operating portion 30 arranged so as to project from the surface 11a of the tool body 11, and the valve body 31 in the projecting direction. A valve body urging member 36 for urging is provided. This flow rate adjusting mechanism can introduce compressed air from the upstream side, and when an air supply source such as an air compressor is connected, compressed air is always supplied to the upstream side. Further, an air outlet 40 to which the duster pipe 42 (joint component 41) can be connected is opened on the downstream side of the flow rate adjusting mechanism.

The pipeline forming portion 20 has a hollow portion forming the pipeline 23, and in the present embodiment, a part of the housing of the tool body 11 is used as the pipeline forming portion 20. That is, a through hole is formed in the housing of the tool body 11 in a direction orthogonal to the driving direction of the fastener, and the pipe line 23 is formed by the through hole. As shown in FIG. 7B, the pipeline forming portion 20 is configured to take compressed air into the pipeline 23 from the upstream opening 21 that opens to the upstream side. Further, on the downstream side of the upstream opening 21, a throttle that controls the flow rate of air in the pipeline 23 by gradually changing the clearance amount between the pipeline 23 and the valve body 31 when the valve body 31 moves. A portion 23a is provided. The throttle portion 23a is formed in a tapered shape in which the opening gradually increases toward the downstream side, and is configured to gradually increase the clearance amount when the valve body 31 moves in the direction of opening the pipeline 23. Has been done.

The valve body 31 has an operation unit 30 operably arranged at the tip thereof, and is configured to slide in conjunction with the pressing operation of the operation unit 30. In the natural state, the valve body 31 is urged in the protruding direction by the valve body urging member 36, but when the operation unit 30 is pushed in against the urging force of the valve body urging member 36. , The valve body 31 moves in the direction of opening the pipeline 23. In the present embodiment, a tip sealing member 32 formed of an O-ring or the like is attached to the tip of the valve body 31, and in a natural state, the tip sealing member 32 comes into contact with the throttle portion 23a to form a pipeline. 23 is in a closed state. Further, when the valve body 31 moves in the direction of opening the pipeline 23, a clearance is generated between the tip seal member 32 and the throttle portion 23a, and the clearance controls the flow rate of air in the pipeline 23. It has become. Then, when the valve body 31 opens the pipeline 23, air is discharged from the air outlet 40, and air is ejected from the ejection port 17b. In this embodiment, since the valve body 31 and the air take-out port 40 are arranged along the pushing direction of the operation unit 30, the duster pipe 42 does not have to be arranged inside the housing. There is.

According to such a configuration, as the operation amount of the operation unit 30 increases, the flow path area of the throttle unit 23a gradually increases, and the amount of air ejected from the ejection port 17b gradually increases.

Here, as shown in FIG. 7, the air duster structure according to the present embodiment includes a regulation unit 26 that regulates the maximum pushing amount of the operation unit 30. The regulation unit 26 is configured so that the relative position with the operation unit 30 can be changed. Then, by changing the relative position between the operation unit 30 and the regulation unit 26, the maximum pushing amount of the operation unit 30 can be adjusted.

As shown in FIG. 7, the regulation unit 26 according to the present embodiment is a disk-shaped member arranged between the operation unit 30 and the surface 11a of the tool body 11. The restricting portion 26 is rotatably attached to the surface 11a of the tool body 11 via the rotating shaft 26a.

The regulation unit 26 includes a plurality of engagement points that can be engaged with the operation unit 30, and the maximum pushing amount of the operation unit 30 is determined depending on which of the plurality of engagement points the operation unit 30 is engaged with. You can do it. The regulating portion 26 according to the present embodiment includes three engaging portions of the first engaging portion 26b, the second engaging portion 26c, and the third engaging portion 26d, and these engaging portions are the rotating shafts. It is arranged in the circumferential direction around 26a. These engaging portions are formed so that the height from the surface 11a of the tool body 11 increases in the order of the first engaging portion 26b, the second engaging portion 26c, and the third engaging portion 26d.

When the restricting portion 26 is rotated, 1 or 0 of these plurality of engaging portions faces the back surface side of the operating portion 30. The engaging portion facing the back surface side of the operation unit 30 interferes with the operation unit 30 so that the operation unit 30 cannot stroke to the back (up to the maximum push amount that can be pushed in without being regulated by the regulation unit 26). Specifies the maximum pushing amount of. That is, by rotating the regulating portion 26, the engaging portion engaged with the operating portion 30 can be switched, and by switching the engaging portion, the maximum pushing amount of the operating portion 30 can be adjusted. ing. By controlling the maximum pushing amount of the operating unit 30, the maximum flow path area of the throttle unit 23a can be controlled, and the maximum amount of air ejected from the ejection port 17b can be controlled.

Specifically, as shown in FIG. 8A, when the restricting portion 26 is arranged so that the first engaging portion 26b faces the back surface side of the operating portion 30, as shown in FIG. 8B, The operating unit 30 can be pushed only to a position where the operating unit 30 interferes with the first engaging unit 26b. Therefore, the maximum amount of air ejected from the ejection port 17b is set to "small".

Further, as shown in FIG. 8 (c), when the restricting portion 26 is arranged so that the second engaging portion 26c faces the back surface side of the operating portion 30, the operating unit 30 is as shown in FIG. 8 (d). Can only push the operating unit 30 to a position where it interferes with the second engaging unit 26c. Therefore, the maximum amount of air ejected from the ejection port 17b is set to "medium".

Further, as shown in FIG. 8 (e), when the restricting portion 26 is arranged so that the third engaging portion 26d faces the back surface side of the operating portion 30, as shown in FIG. 8 (f), the operating unit 30 Can only push the operating unit 30 to a position where it interferes with the third engaging unit 26d. Therefore, the maximum amount of air ejected from the ejection port 17b is set to "large".

Further, as shown in FIG. 8 (g), when the restricting portion 26 is arranged so that the engaging portion does not face the back surface side of the operating portion 30, the operating portion 30 is a tool as shown in FIG. 8 (h). The operation unit 30 can be pushed in to a position where it interferes with the surface 11a of the main body 11. Therefore, the maximum amount of air ejected from the ejection port 17b is set to "maximum".

As described above, according to the present embodiment, the regulation unit 26 that regulates the maximum pushing amount of the operation unit 30 is provided, and the maximum operation unit 30 is changed by changing the relative position between the operation unit 30 and the regulation unit 26. The pushing amount can be adjusted. According to such a configuration, the air volume can be adjusted by an intuitive operation of restricting the movement of the operation unit 30 itself. Further, since the regulation unit 26 is provided near the operation unit 30, adjustment is easy. Then, after the adjustment, a stable air volume can be obtained only by pushing the operation unit 30 as far as it will go.

Further, the maximum pushing amount of the operation unit 30 is determined depending on which of the plurality of engagement points the operation unit 30 engages with. According to such a configuration, the function of adjusting the air volume can be realized with a simple structure.

Further, the regulation unit 26 is provided between the operation unit 30 and the surface 11a of the tool body 11. With such a configuration, since the regulating unit 26 can be visually observed, the air volume can be intuitively adjusted.

Further, the maximum pushing amount of the operation unit 30 can be adjusted by rotating the regulation unit 26. According to such a configuration, the air volume can be adjusted with a simple operation.

In the above description, the maximum pushing amount of the operating unit 30 can be adjusted by rotating the regulating unit 26, but the present invention is not limited to this.

For example, as in the modified examples shown in FIGS. 9 and 10, the maximum pushing amount of the operating unit 30 may be adjusted by rotating the operating unit 30.

In this modification, the regulating portion 26 is fixed to the tool body 11 side. More specifically, the regulating portion 26 is integrally formed on the surface 11a of the tool body 11.

As shown in FIG. 9, the regulation unit 26 includes a plurality of engagement points that can be engaged with the operation unit 30, and the operation unit 30 depends on which of the plurality of engagement points the operation unit 30 engages with. The maximum pushing amount of is determined. The regulation unit 26 according to the present embodiment includes three engagement portions of the first engagement portion 26b, the second engagement portion 26c, and the third engagement portion 26d, and these engagement portions will be described later. The operation unit 30 is arranged in the circumferential direction around the rotation shaft 30a. These engaging portions are formed so as to have different heights from the surface 11a of the tool body 11, the first engaging portion 26b is the highest, the second engaging portion 26c is the second highest, and the third. The engaging portion 26d is the lowest.

On the other hand, as shown in FIG. 9, the operation unit 30 according to this modification is rotatably attached to the surface 11a of the tool body 11 via the rotation shaft 30a. Further, it is provided with a protruding engaging portion 30b in which a part of the peripheral edge portion is projected in the outer peripheral direction.

When the operating portion 30 is rotated, one of the plurality of engaging portions of the regulating portion 26 faces the back surface side of the protruding engaging portion 30b. The engaging portion facing the back surface side of the protruding engaging portion 30b is operated by interfering with the operating portion 30 so that it cannot stroke to the back (up to the maximum pushing amount that can be pushed in without being regulated by the regulating portion 26). The maximum pushing amount of the portion 30 is specified. In this way, by rotating the operation unit 30, the engagement portion that engages with the operation unit 30 can be switched, and by switching the engagement portion, the maximum pushing amount of the operation unit 30 can be adjusted. It has become. By controlling the maximum pushing amount of the operating unit 30, the maximum flow path area of the throttle unit 23a can be controlled, and the maximum amount of air ejected from the ejection port 17b can be controlled.

Specifically, as shown in FIG. 9A, when the operation unit 30 is arranged so that the third engagement portion 26d faces the back surface side of the protruding engagement portion 30b, the operation portion 30 is engaged with the third engagement portion 30. The operation unit 30 can be pushed only to a position where it interferes with the unit 26d. Therefore, the maximum amount of air ejected from the ejection port 17b becomes "large".

Further, as shown in FIG. 10A, when the operating portion 30 is arranged so that the second engaging portion 26c faces the back surface side of the protruding engaging portion 30b, the operating portion 30 is placed on the second engaging portion 26c. The operation unit 30 can be pushed only to the position where it interferes. Therefore, the maximum amount of air ejected from the ejection port 17b is "medium".

Further, as shown in FIG. 10B, when the operating portion 30 is arranged so that the first engaging portion 26b faces the back surface side of the protruding engaging portion 30b, the operating portion 30 is placed on the first engaging portion 26b. The operation unit 30 can be pushed only to the position where it interferes. Therefore, the maximum amount of air ejected from the ejection port 17b is "small".

According to such a configuration, the air volume can be adjusted with a simple operation. Further, since the air duster can be turned on and off and the air volume can be adjusted with one operation unit 30, the function can be realized with a small number of parts.

In the above-described embodiment, the plurality of engaging portions of the regulating portion 26 are formed by steps, but the present invention is not limited to this, and the plurality of engaging portions are continuously connected in a slope shape to steplessly form the operation unit 30. The maximum push amount may be regulated.

Further, in the above-described embodiment, the regulation unit 26 and the operation unit 30 are rotated to adjust the maximum pushing amount of the operation unit 30, but the present invention is not limited to this, and the operation unit is not limited to this, for example, by attaching and detaching the regulation unit 26. The mode may be such that the maximum pushing amount of 30 is adjusted.

10 Driving tool 11 Tool body 11a Surface 12 Grip 13 Trigger 14 Nose part 14a Injection port 15 Magazine 16 End cap part 17 Tip cover member 17a Piping holding part 17b Outlet port 18 Side cover member 20 Pipeline forming part 21 Upstream opening 23 Pipeline 23a Squeezing part 26 Restricting part 26a Rotating shaft 26b 1st engaging part 26c 2nd engaging part 26d 3rd engaging part 30 Operation part 30a Rotating shaft 30b Overhanging engaging part 31 Valve body 32 Tip seal member 36 Valve Body urging member 40 Air outlet 41 Joint parts 42 Duster piping 42a Tip

Claims (5)

It is an air duster structure that is provided in the driving tool where the fastener is launched by grasping and grasping the grip and pulling the trigger, and the amount of air ejected changes according to the operation amount of the operation part. ,
A regulation unit that regulates the maximum operation amount of the operation unit is provided, and the maximum operation amount can be adjusted.
The restricting portion includes a plurality of engaging portions that can be engaged with the operating portion.
The maximum operation amount of the operation unit is determined by which of the plurality of engagement points the operation unit engages with.
An air duster structure characterized in that the operation portion and the regulation portion are provided on the side surface of the driving tool. The air duster structure according to claim 1, wherein the maximum operation amount of the operation unit can be adjusted by changing the relative position between the operation unit and the regulation unit. The operating unit is disposed so as to protrude from the side surface of the machine body, the regulating unit is characterized in that is provided to be out between the side surface of the machine body and the operation unit, according to claim 1 or The air duster structure according to 2. The air duster structure according to claim 3 , wherein the regulating portion is rotatably attached to a side surface of a machine body via a rotating shaft located at a position deviated from the center of the operating portion. The operating portion includes a protruding engaging portion in which a part of the peripheral edge portion is projected in the outer peripheral direction, and the protruding engaging portion is engaged with which of the plurality of engaging portions by rotating the operating portion. wherein characterized in that the maximum operation amount of the operation portion is adjustable, duster structure according to claim 1 or 2 by.

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