JP6808476B2 - Driving tool - Google Patents

Description

The present invention relates to a driving tool such as a compressed air driven nail gun.

For example, in a high-pressure air nail gun as disclosed in the following patent document, an exhaust cover is attached to the side of the tool body for the purpose of reducing exhaust noise. The following patent document discloses a configuration in which the upper end of the exhaust cover is engaged with the lower end edge of the cylinder cap and fixed at the mounting position. According to the mounting structure, the upper end side of the exhaust cover is fixed by utilizing the mounting state of the cylinder cap, so that the mounting structure can be simplified.

Japanese Patent No. 3099285

However, according to the conventional exhaust cover mounting structure, the lower side of the exhaust cover is configured to engage with a rubber layer coated on the tool body for the purpose of shock absorption and hold the position. There was a problem that the mounting position of the exhaust cover was not stable.

An object of the present invention is to stabilize the mounting position of the exhaust cover while simplifying the mounting structure of the exhaust cover.

The above problems are solved by the following inventions. The first invention is a driving tool provided with an exhaust cover on the side of a tool body having a striking piston that reciprocates using compressed air as a power source. In the first invention, a driver guide for guiding the driver for striking the driving tool is attached to the front part of the tool body in the driving direction, and a top cap for airtightly closing the upper chamber of the piston is attached to the rear part of the tool body in the driving direction. It is attached, and the front part of the exhaust cover in the driving direction is fixed to the main body housing by using the means of attaching the driver guide to the main body housing of the tool body, and the exhaust cover is driven by using the top cap attaching means to the main body housing. The rear part of the direction is fixed to the main body housing.

According to the first invention, the front part of the exhaust cover in the driving direction is fixed to the main body housing by the means of attaching the driver guide to the main body housing, and the rear part of the exhaust cover in the driving direction is fixed to the main body housing by the means of attaching the top cap to the main body housing. Will be done. As a result, the front and rear parts of the exhaust cover in the driving direction can be mounted at a stable mounting position with respect to the main body housing, and the mounting position of the exhaust cover can be stabilized.

The second invention is, in the first invention, a driving tool in which two places on the front side in the driving direction and two places on the rear side in the driving direction of the exhaust cover are fixed to the main body housing.

According to the second invention, two places each of the front side and the rear side of the exhaust cover in the driving direction are fixed to the main body housing, and the mounting position of the exhaust cover is stabilized.

A third invention is a driving tool in which a fixing screw is used as a mounting means in the first or second invention. In the third invention, an engaging pin portion is integrally provided at the tip of the fixing screw, and the engaging pin portion is engaged with the exhaust cover to fix the exhaust cover to the main body housing. ..

According to the third invention, the driver guide and the top cap are screwed to the main body housing with fixing screws. When the driver guide and the top cap are screwed to the main body housing with fixing screws, the exhaust cover is fixed to the main body housing by the engaging pins of the fixing screws.

A fourth invention is a driving tool provided with an air duster device that blows compressed air from a duster pipe by an operation different from the starting operation of the tool main body in any one of the first to third inventions. In the fourth invention, the exhaust cover holds the duster pipe.

According to the fourth invention, the position of the duster pipe can be held with respect to the tool body portion with a simple configuration, whereby the configuration of the air duster device can be simplified. By simplifying the configuration of the air duster device, it is possible to improve the ease of assembly and maintainability and reduce the cost.

A fifth invention is a driving tool provided with an information display unit on an exhaust cover in any one of the first to fourth inventions.

According to the fifth invention, the exhaust cover can be provided with an information display function, and an information display area can be easily secured.

A sixth aspect of the present invention is the driving tool in which a seal member is interposed between the exhaust cover and the main body housing in any one of the first to fifth inventions.

According to the sixth invention, the airtightness between the exhaust cover and the main body housing can be increased to improve the exhaust efficiency. In the case of the sixth invention, the edge portion of the shock absorbing elastomer rubber layer coated on the main body housing can be sandwiched, and the sandwiched edge portion can function as a sealing member.

A seventh invention is a driving tool provided with an exhaust cover on the side of a tool body having a striking piston that reciprocates using compressed air as a power source. In the seventh invention, a driver guide for guiding the driver for striking the driving tool is attached to the front part of the tool body in the driving direction, and a top cap that airtightly closes the upper chamber of the piston is attached to the rear part of the tool body in the driving direction. It is attached, and the exhaust cover is sandwiched between the driver guide and the top cap in the front and rear and fixed to the main body housing.

According to the seventh invention, the exhaust cover is sandwiched and fixed between the driver guide at the front part in the driving direction with respect to the main body housing and the top cap at the rear part in the driving direction, whereby the mounting position of the exhaust cover with respect to the main body housing is fixed. Is stabilized.

It is an overall side view of the driving tool which concerns on this embodiment. This figure shows the left side when viewed from the user. It is a vertical cross-sectional view of the driving tool which concerns on this embodiment. It is an overall side view of the driving tool which concerns on this embodiment. This figure shows the right side when viewed from the user. This figure shows a state in which the contact arm cover and the exhaust cover are removed to expose the duster pipe. It is an overall side view of the driving tool which concerns on this embodiment. This figure shows the right side when viewed from the user. This figure shows a state in which the contact arm cover and the exhaust cover are attached and the duster pipe is held. FIG. 4 is a cross-sectional view taken along the line (V)-(V) of FIG. 4, which is a vertical cross-sectional view of the duster valve and its surroundings. This figure shows the off state of the duster valve. FIG. 4 is a cross-sectional view taken along the line (VI)-(VI) of FIG. 4, which is a vertical cross-sectional view of the duster valve. This figure shows the on state of the duster valve. It is a cross-sectional view taken along the line (VII)-(VII) of FIG. This figure is a cross-sectional view taken through the exhaust hole. It is a cross-sectional view taken along the line (VIII)-(VIII) of FIG. This figure is a cross-sectional view taken through the center of the fixing bolt of the top cap. It is an exploded perspective view which shows the attachment state of the exhaust cover with respect to the main body housing. FIG. 1 is a cross-sectional view taken along the line (X)-(X) of FIG. 1, which is a cross-sectional view of the tool body. In this figure, the state of attachment of the exhaust cover and the filter to the protector is shown. It is a cross-sectional view taken along the line (XI)-(XI) of FIG. In this figure, a vertical cross section shows a state in which the duster pipe is covered with an exhaust cover on the right side of the tool body. It is a cross-sectional view taken along the line (XII)-(XII) of FIG. In this figure, a vertical cross section shows a state in which the duster pipe is covered with a contact cover on the right side of the tool body.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 12. As shown in the figure, in the present embodiment, a compressed air-driven nail gun is illustrated as an example of the driving tool 1. The driving tool 1 of the present embodiment includes an air duster device 30 that blows out compressed air. This embodiment has features that have not been conventionally provided for the mounting structure of the air duster device 30 and the exhaust cover 40, and the basic configuration of the driving tool 1 does not need to be changed in particular, so detailed description thereof will be omitted. In this specification, with respect to the direction of each member or configuration, the direction in which the driving tool is driven is the lower side and the user side is the rear side as shown in the figure.

The driving tool 1 is an air-driven nail gun that operates by using compressed air as a drive source, and includes a tool main body portion 2, a handle portion 3, and a magazine 4. A driver guide 5 is provided at the lower part of the tool body 2 so as to protrude downward. The lower end of the driver guide 5 is an injection port 5a into which the driving tool is launched.

As shown in FIG. 2, the tool body 2 has a cylindrical body housing 15 with a cylindrical cylinder 12 mounted therein, and a disk-shaped piston 10 mounted in the cylinder 12 so as to be reciprocating up and down. I have. A driver 11 for striking is attached to the center of the lower surface of the piston 10. The driver 11 extends downward long, and its tip reaches the inside of the driving passage 5b of the driver guide 5. When compressed air is supplied to the upper chamber of the piston 10, the piston 10 moves down in the cylinder 12 and the striking driver 11 moves down in the driving passage 5b. In the driving passage 5b, one driving tool n is supplied from the magazine 4 in conjunction with the driving operation of the tool main body 2. Therefore, when the driver 11 moves downward, one driving tool n is hit by the driver 11 and is launched from the injection port 5a of the driver guide 5. One driving tool n hit by the driver 11 is driven from the injection port 5a and driven into the material W to be driven.

The handle portion 3 is provided so as to protrude laterally from the side portion of the tool body portion 2. The inside of the handle portion 3 is a pressure accumulator (accumulator) 8 for storing compressed air to be supplied to the tool body portion 2. A hose connection port 9 for connecting an air hose is provided at the tip of the handle portion 3. Compressed air is supplied from the compressed air source (air compressor) to the accumulator chamber 8 via the air hose connected to the hose connection port 9.

A trigger type switch lever 6 and a trigger valve 7 are arranged near the base of the handle portion 3. A head valve 13 for opening and closing the upper chamber of the piston 10 with respect to the accumulator chamber 8 is arranged on the upper outer peripheral side of the cylinder 12 on the tool body 2 side so as to be movable up and down. The head valve 13 is urged toward the upper closed position by the compression spring 13a. FIG. 2 shows a state in which the head valve 13 is located at the closed position. The compressed air supplied to the accumulator chamber 8 acts on both the upper surface side and the lower surface side of the head valve 13, and in the initial state in which they act on both, the pressure receiving area difference between the upper surface side and the lower surface side and the compression spring 13a are attached. The head valve 13 is held in a closed position in the upper chamber of the piston 10 by the force. As shown in FIG. 1, when the switch lever 6 is pulled with the fingertip (index finger F1) of the hand holding the handle portion 3, the trigger valve 7 is turned on. When the trigger valve 7 is turned on, the lower surface side of the head valve 13 is opened to the atmosphere and the air pressure is switched to a state in which the air pressure does not act. Therefore, the head valve 13 is moved downward by the air pressure acting on the upper surface side, and the upper chamber of the piston 10 is accumulating pressure. Opened to room 8. When the head valve 13 moves downward to open, compressed air is supplied from the accumulator chamber 8 to the upper chamber of the piston 10, and the piston 10 moves downward. As described above, the downward movement of the piston 10 causes the driving operation of one driving tool n.

Although not shown in the figure, when the piston 10 reaches the lower moving end and the driving operation is completed, a part of the compressed air flowing into the upper chamber of the piston 10 passes through the check valve 14a and enters the return air chamber 14. It flows into the piston 10 and acts on the lower surface side of the piston 10 through the ventilation hole 14b. On the other hand, when the pulling operation of the switch lever 6 is released after the driving operation, the trigger valve 7 is turned off. When the trigger valve 7 is turned off, the pressure-accumulating chamber 8 is switched to a state in which the compressed air of the accumulator chamber 8 acts on the lower surface side of the head valve 13 again, and the head valve 13 is moved upward by the air pressure and the urging force of the compression spring 13a. As shown in FIG. 2, when the head valve 13 moves upward, the upper chamber of the piston 10 is closed with respect to the accumulator chamber 8 while being opened to the atmosphere. The compressed air in the upper chamber of the piston 10 is exhausted to the outside through the exhaust holes 16 provided in the main body housing 15. An exhaust cover 40 is attached to the side portion of the main body housing 15 so as to cover the exhaust hole 16. The present embodiment has a feature not found in the conventional mounting structure of the exhaust cover 40. The details will be described later.

The magazine 4 is loaded with a connecting driving tool in which a large number of driving tools are connected in parallel at regular intervals, and a housing portion 4a having a cylindrical box shape for accommodating the connecting driving tools in a spiral state. A lid portion 4b for closing this is provided. A feed mechanism 4c is provided between the magazine 4 and the driver guide 5 to feed the connecting driving tool in the driving passage of the driver guide 5 in conjunction with the driving operation of the tool body 2. When the feed mechanism 4c operates in conjunction with the driving operation of the tool body 2, the connected driving portion loaded in the magazine 4 is pitch-fed, and one driving tool n is provided in the driving passage 5b of the driver guide 5. Be supplied.

The driver guide 5 is provided with a contact arm 20 for switching between valid and invalid of the pulling operation of the switch lever 6. As shown in FIG. 3, the contact arm 20 is formed by bending a rod having a small diameter, and is supported so as to be displaceable up and down mainly along the right side portion of the driver guide 5. A contact top 21 is attached to the lower portion of the contact arm 20. The contact top 21 is a metal member having a substantially cylindrical shape, and is located coaxially with the lower part of the driver guide 5. The tip opening of the contact top 21 serves as the injection port 5a.

As shown in the figure, by pushing down the driving tool 1 in the driving direction with the contact top 21 in contact with the material W to be driven, the contact top 21 moves relatively upward with respect to the driver guide 5. .. When the contact arm 20 moves upward relative to the driver guide 5 by the pressing operation of the contact top 21, the pulling operation of the switch lever 6 becomes effective. Therefore, the pulling operation of the switch lever 6 is effective only when the contact top 21 is brought into contact with the material to be driven W and the driving tool 1 is pushed down, whereby the contact arm 20 is relatively moved upward. The driving operation is performed. When the contact arm 20 is not relatively moved upward, the trigger valve 7 does not turn on even if the switch lever 6 is pulled to the on side, so that the tool body 2 does not perform the driving operation.

The contact top 21 can be replaced with another contact top having a different length or the like according to the driving tool n. The spare contact top can be stored in the storage portion 22 provided on the rear side of the magazine 4 without rattling.

The driving tool 1 of the present embodiment includes an air duster device 30 that blows out compressed air by the operation of the user, in addition to the series of driving operations in the tool body 2. By blowing compressed air onto wood chips and dust around the driving portion with the air duster device 30, it is possible to improve the visibility around the driving portion, whereby accurate driving work can be performed quickly. The air duster device 30 of the present embodiment is not the tip end side of the handle portion 3 as in the conventional case, but is the side portion of the tool body portion 2 and the base portion of the handle portion 3 and the cylinder 12 with respect to the position in the front-rear direction in which the handle portion 3 extends. It is provided between and. Therefore, as shown in FIG. 1, the air duster device 30 of the present embodiment uses the air duster device 30 by operating the duster button 36 with, for example, the thumb F2, without changing the grip of the hand with respect to the handle portion 3 during the driving operation. Can be done.

Details of the air duster device 30 are shown in FIGS. 5 and 6. The air duster device 30 includes a duster valve 31 and a duster pipe 32. The duster valve 31 is a side portion on the rear side of the main body housing 15 and is arranged between the cylinder 12 and the trigger valve 7. The duster valve 31 has a configuration in which one valve stem 38 is airtightly housed in a valve recess 15a provided in the main body housing 15. The right end portion of the valve recess 15a communicates with the atmosphere through the punch hole 15b. The punch hole 15b avoids the generation of negative pressure in the valve recess 15a and ensures smooth movement of the valve stem 38. The valve stem 38 is equipped with first and second seal rings 33 and 34. The first and second seal rings 33 and 34 are airtightly slidably contacted with the inner wall surface of the valve recess 15a. A third seal ring 35 is mounted on the inner wall surface of the valve recess 15a. The third seal ring 35 is airtightly slidably contacted with the outer peripheral surface of the switching large diameter portion 38a of the valve stem 38 between the first seal ring 33 and the second seal ring 34.

The left end side of the valve stem 38 protrudes to the left from the inside of the valve recess 15a. A disk-shaped duster button 36 is attached to the left end of the valve stem 38 to which the user puts his or her fingertips during operation. A compression spring 37 is interposed between the duster button 36 and the mouth of the valve recess 15a. The compression spring 37 urges the valve stem 38 to the left (off side) in FIGS. 5 and 6. FIG. 5 shows the off state of the duster valve 31, and FIG. 6 shows the on state of the duster valve 31.

In the off state shown in FIG. 5, the third seal ring 35 is in sliding contact with the switching large diameter portion 38a of the valve stem 38. Therefore, in this off state, the inside of the valve recess 15a between the first seal ring 33 and the third seal ring 35 and between the second seal ring 34 and the third seal ring 35 is airtight in the left and right two chambers. It will be in a partitioned state. A duster pipe 32 is connected to the right ventricle between the first seal ring 33 and the third seal ring 35. A ventilation hole 8a from the accumulator chamber 8 is opened in the left chamber between the second seal ring 34 and the third seal ring 35. In the off state shown in FIG. 5, the space between the duster pipe 32 and the ventilation hole 8a is hermetically sealed by the third seal ring 35, so that the compressed air is not supplied to the duster pipe 32.

As shown in FIG. 6, when the duster button 36 is pushed to the right side (on side) against the urging force of the compression spring 37, the switching large diameter portion 38a of the valve stem 38 comes off from the inner peripheral side of the third seal ring 35. It becomes a state. In this on state, the right ventricle between the first seal ring 33 and the third seal ring 35 and the left ventricle between the second seal ring 34 and the third seal ring 35 are the inner circumferences of the third seal ring 35. It will be in a state of being communicated through the side. Therefore, the compressed air is supplied from the accumulator chamber 8 to the duster pipe 32 through the ventilation holes 8a.

As shown in FIG. 3, the duster pipe 32 is piped from the vicinity of the base portion of the handle portion 3 to the driver guide 5 side along the right side portion of the tool body portion 2. As shown in FIGS. 5 and 6, the upstream end portion of the duster pipe 32 is inserted into the connection hole 15c provided in the main body housing 15 and is airtightly connected. The lower end portion (outlet port 32a) of the duster pipe 32 is located behind the driver guide 5 and on the back surface (right side) of the feeding mechanism 4c of the driving tool. As shown in FIG. 6, when the duster valve 31 is turned on, compressed air is blown out from the outlet 32a in the same direction (downward) as the driving direction of the driving tool n. The compressed air blown out from the outlet 32a enhances the visibility in which wood chips and dust on the material W to be driven are blown off.

When the user releases the pushing operation of the duster button 36, the valve stem 38 is returned to the off position side shown in FIG. 5 by the urging force of the compression spring 37. When the valve stem 38 is returned to the off position, the switching large diameter portion 38a is returned to the inner peripheral side of the third seal ring 35, and the duster pipe 32 is in a state of being airtightly shut off from the accumulator chamber 8 side. The blowing of compressed air from the port 32a is stopped.

As shown in FIGS. 4, 11 and 12, the duster pipe 32 is covered and held in an integral position by the contact arm cover 23 and the exhaust cover 40 attached along the right side of the tool body 2. In particular, as shown in FIG. 12, the tip end portion (outlet port 32a) of the duster pipe 32 is inserted into the holding hole 23a of the contact arm cover 23 and held at a fixed position. The contact arm cover 23 covers the right side of the contact arm 20. In FIG. 4, the contact arm 20 and the duster pipe 32 are almost entirely covered by the contact arm cover 23 and the exhaust cover 40 and are invisible.

The contact arm cover 23 is attached to the feeding mechanism 4c of the driving tool n by being screwed with a fixing screw 23b at one place. On the other hand, the exhaust cover 40 is attached to the main body housing 15 by a new structure that has not existed in the past. A driver guide 5 is connected to the lower part of the main body housing 15 of the tool main body 2 by four fixing screws 41. A top cap 17 is connected to the upper part of the main body housing 15 of the tool main body 2 by four fixing screws 42. As shown in FIG. 2, the upper part of the main body housing 15 is airtightly closed by the top cap 17. A damper 18 for top dead center is attached to the inner surface of the top cap 17. The top cap 17 is coated with a rubber layer 17a for shock absorption. Further, a damper 19 for bottom dead center is attached to the driver guide 5 coupled to the lower part of the main body housing 15.

The exhaust cover 40 according to the present embodiment is attached by using the means for connecting the driver guide 5 to the main body housing 15 (fixing screw 41) and the means for connecting the top cap 17 to the main body housing 15 (fixing screw 42). .. The main body housing 15 with the driver guide 5 and the top cap 17 removed is shown in FIG. Although only two fixing screws 41 and 42 are shown in FIG. 9, the driver guide 5 and the top cap 17 are attached to the main body housing 15 by the four fixing screws 41 and 42, respectively, as described above. To be combined.

Engagement pin portions 41a and 42a are coaxially and integrally provided at the tips of the fixing screws 41 and 42. The engaging pin portions 41a and 42a are formed to have a diameter smaller than the screw diameter. Rectangular flat plate-shaped coupling flange portions 43 and 44 are provided on the lower portion and the upper portion of the main body housing 15 so as to project laterally, respectively. Screw holes 43a and 44a are provided at the four corners of the upper and lower coupling flange portions 43 and 44, respectively. By abutting the driver guide 5 against the lower coupling flange portion 43 and tightening the four fixing screws 41 into the screw holes 43a, the driver guide 5 is coupled to the lower part of the main body housing 15. Further, the top cap 17 is bonded to the upper portion of the main body housing 15 by abutting the top cap 17 against the upper coupling flange portion 44 and tightening the four fixing screws 42 into the screw holes 44a.

As shown in FIG. 8, in order to connect the driver guide 5 and the top cap 17 to the main body housing 15, a total of eight fixing screws 41 and 42 are tightened into the screw holes 43a and 44a, respectively. , 42 engaging pin portions 41a, 42a are in a state of protruding from the screw holes 43a, 44a. The exhaust cover 40 is a resin part having slits 40c for exhaust, and lower engaging recesses 40a are provided at two lower portions thereof, and upper engaging recesses 40b are provided at two upper portions. The engaging pin portions 41a and 42a protruding from the screw holes 43a and 44a of the fixing screws 41 and 42 are inserted into the lower engaging recess 40a and the upper engaging recess 40b of the exhaust cover 40, respectively, and the exhaust cover 40 is inserted. It is attached along the left and right sides of the main body housing 15.

A muffling filter 45 is attached to the inner surface side of the exhaust cover 40 and the inner surface side of the slit 40c. Further, the exhaust cover 40 of the present embodiment is provided with a display unit 40d for displaying various information on the lower side of the slit 40c. Further, the outer surface of the main body housing 15 is coated with a protector 47 (elastomer resin layer) for shock absorption. As shown in FIGS. 7 and 10, the edge of the protector 47 is pressed and fixed by the exhaust cover 40. The exhaust cover 40 also has a function as a fixing means for the protector 47.

According to the driving tool 1 of the present embodiment described above, both the front part and the rear part of the exhaust cover 40 in the driving direction are provided by the means for attaching the driver guide 5 and the top cap 17 to the main body housing 15 (fixing screws 41 and 42). Since the configuration is fixed to the main body housing 15, the exhaust cover 40 can stabilize the mounting position with respect to the main body housing 15.

Further, since the exhaust cover 40 is attached by being sandwiched between the driver guide 5 and the top cap 17 in the front-rear direction in the driving direction, the attachment position of the exhaust cover 40 with respect to the main body housing 15 can be stabilized in this respect as well.

Further, since the duster pipe 32 of the air duster device 30 is held in position by the exhaust cover 40, the position holding structure of the duster pipe 32 can be simplified. By simplifying the position holding structure of the duster pipe 32, it is possible to improve the assembleability and maintainability of the air duster device 30 and reduce the cost.

Further, the exhaust cover 40 according to the present embodiment is provided with an information display unit 40d. The information display unit 40d can display the specifications of the driving tool 1 or precautions for handling. By providing the information display unit 40d on the exhaust cover 40 attached along the left and right side portions of the main body housing 15, it becomes possible to easily secure a display area for this type of information.

Further, the exhaust cover 40 is attached with the edge portion of the elastomer rubber layer for shock absorption sandwiched between the exhaust cover 40 and the main body housing 15. As a result, air leakage between the exhaust cover 40 and the main body housing 15 can be prevented and the exhaust efficiency can be improved.

Various changes can be made to the embodiments described above. For example, the configuration in which the same mounting structure is applied to the exhaust covers 40 on both the left and right sides is illustrated, but one may be directly connected to the outer surface of the main body housing 15 by, for example, screwing.

An example of a configuration in which the exhaust cover 40 is attached by using the means for attaching the driver guide 5 to the main body housing 15 (fixing screw 41) and the means for attaching the top cap 17 to the main body housing 15 (fixing screw 42) has been illustrated. Instead of using means, for example, the engaging pins provided on the driver guide 5 and the top cap 17 are inserted into and engaged with the front and rear surfaces of the exhaust cover, and the exhaust cover is driven between the driver guide and the top cap. It may be installed by sandwiching it in the front-back direction.

Further, the function of holding the position of the display unit 40d and the duster pipe 32 of the exhaust cover 40 may be omitted.

1 ... Driving tool, n ... Driving tool, W ... Driving material 2 ... Tool body 3 ... Handle part, F1 ... Index finger, F2 ... Thumb 4 ... Magazine 4a ... Storage part, 4b ... Lid part, 4c ... Feed mechanism 5 ... Driver guide, 5a ... Injection port, 5b ... Driving passage 6 ... Switch lever 7 ... Trigger valve 8 ... Accumulation chamber, 8a ... Vent hole 9 ... Hose connection port 10 ... Piston 11 ... Driver 12 ... Cylinder 13 ... Head valve, 13a ... compression spring 14 ... return air chamber 14a ... check valve, 14b ... ventilation hole 15 ... main body housing 15a ... valve recess, 15b ... extraction hole 16 ... exhaust hole 17 ... top cap 20 ... contact arm 21 ... contact top 22 ... accommodation Part 23 ... Contact arm cover, 23a ... Holding hole, 23b ... Fixing screw 30 ... Air duster device 31 ... Duster valve 32 ... Duster pipe, 32a ... Outlet 33 ... First seal ring 34 ... Second seal ring 35 ... Third seal ring 36 ... Duster button 37 ... Compression spring 38 ... Valve stem, 38a ... Switching large diameter part 40 ... Exhaust cover 40 ... Lower engaging recess, 40b ... Upper engaging recess, 40c ... Slit, 40d ... Display 41 ... Fixing screw (driver guide) (For fixing), 41a ... Engagement pin portion 42 ... Fixing screw (for fixing top cap), 42a ... Engagement pin portion 43, 44 ... Coupling flange portion, 43a, 44a ... Screw hole 45 ... Sound deadening filter 47 ... Protector

Claims (6)

It is a driving tool equipped with an exhaust cover on the side of the tool body, which has a striking piston that reciprocates using compressed air as a power source.
A driver guide that guides the driver for striking the driving tool is attached to the front part of the tool body in the driving direction, and a top cap that airtightly closes the upper chamber of the piston is attached to the rear part of the tool body in the driving direction. ,
The front portion of the exhaust cover in the driving direction is fixed to the main body housing by using the means for attaching the driver guide to the main body housing of the tool main body, and the exhaust cover is used by using the top cap attaching means to the main body housing. Driving direction A driving tool whose rear portion is fixed to the main body housing. The driving tool according to claim 1, wherein two places on the front side in the driving direction and two places on the rear side in the driving direction of the exhaust cover are fixed to the main body housing. The driving tool according to claim 1 or 2, wherein a fixing screw is used as the mounting means, an engaging pin portion is integrally provided at the tip of the fixing screw, and the engaging pin portion is used as the exhaust cover. A driving tool having a configuration in which the exhaust cover is fixed to the main body housing by engaging with. The driving tool according to any one of claims 1 to 3, further comprising an air duster device that blows compressed air from a duster pipe by an operation different from the operation of starting the tool body, and the exhaust cover is provided with the above. A driving tool that holds a duster pipe. The driving tool according to any one of claims 1 to 4, wherein an information display unit is provided on the exhaust cover. The driving tool according to any one of claims 1 to 5, wherein a sealing member is interposed between the exhaust cover and the main body housing.

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