JP2019118989A - Driving machine - Google Patents

Abstract

To provide a driving machine of which large-sizing can be suppressed.SOLUTION: A driving machine 10 comprising: a pressure chamber which operates a striking part 70 by compressed-air in an accumulation chamber 17; a first operation mechanism 19, a second operation mechanism 72 and a third operation mechanism 72 which is operated by a user; a pressure adjustment mechanism 71 which adjusts a pressure of compressed-air in the accumulation chamber 17; and a housing 11 having the accumulation chamber 17 and the striking part 70. The housing 11 has a body 12 which operably supports the striking part 70, and a handle 13 which projects from the body 12. The first operation mechanism 19 is provided at a connection site of the handle 13 and the body 12, the pressure adjustment mechanism 71 is provided at an end of the handle 13 separated from the body 12, and the second operation mechanism 72 and the third operation mechanism 72 are integrally provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a driving machine having a pressure accumulation chamber and a pressure chamber supplied with compressed gas from the pressure accumulation chamber and operating a striking portion.

  Patent Document 1 describes an example of a driving machine having a pressure accumulation chamber and a pressure chamber supplied with compressed gas from the pressure accumulation chamber and operating the striking portion. The driving machine described in Patent Document 1 includes a housing, a pressure accumulation chamber, a trigger as a first operation unit, a pressure adjustment mechanism, a second operation mechanism that switches the pressure adjustment state of the pressure adjustment mechanism, and a third operation mechanism. And an air duster. The housing has a main body, a handle provided protruding from the main body, and a cover attached to the main body. The trigger is provided at the connection between the housing and the handle. The pressure adjustment mechanism and the second operation mechanism are provided on the handle. The third operating mechanism is provided on the cover.

  The trigger switches between a state in which the compressed gas in the pressure accumulation chamber is supplied to the pressure chamber and a state in which the compressed gas in the pressure accumulation chamber is not supplied to the pressure chamber. The pressure adjustment mechanism switches the pressure of the compressed gas in the pressure accumulation chamber to a high pressure and a low pressure. The air duster can be switched between a state in which the compressed air is held in the pressure accumulation chamber and a state in which the compressed air is discharged from the pressure accumulation chamber. The driving machine has a housing, a pressure accumulation chamber, a trigger as a first operation unit, a pressure adjustment mechanism, a second operation mechanism for switching the pressure adjustment state of the pressure adjustment mechanism, and an air duster as a third operation mechanism. It is also described in Patent Document 2.

Unexamined-Japanese-Patent No. 2015-226952 JP, 2016-215353, A

  The inventor of the present application has recognized that there is a problem that the housing becomes larger in size with the driving machine having the first operating unit, the second operating mechanism, the third operating mechanism, and the pressure adjusting mechanism.

  An object of the present invention is to provide a driving machine capable of suppressing an increase in size of a housing.

  The driving machine according to one embodiment is supplied with compressed gas from a pressure accumulation chamber, and is operated by a pressure chamber for operating the striking portion, operated by a user, and supplies the pressure gas of the pressure accumulation chamber to the pressure chamber. A first operating mechanism for connecting and blocking a path, a pressure adjusting mechanism capable of adjusting the pressure of the compressed gas in the pressure accumulation chamber, and a second operating mechanism operated by a user and operating the pressure adjusting mechanism; A third operation mechanism operated by a user to switch between a state in which the compressed gas is stored in the pressure accumulation chamber and a state in which the compressed gas is discharged from the pressure accumulation chamber; a housing having the pressure accumulation chamber and the striking portion; The housing includes: a main body operable to support the striking portion; and a handle which is protruded from the main body and is gripped by the user by the hand; The operating mechanism is provided at a connection portion between the handle and the main body, and the pressure adjusting mechanism is provided at an end of the handle opposite to the main body, and the second operating mechanism and the third operation are provided. A mechanism is integrally provided.

  The driving machine according to one embodiment can suppress an increase in size of the housing.

It is a side sectional view showing Embodiment 1 of the driving machine of the present invention. It is side surface sectional drawing which shows the principal part of the driving machine of FIG. It is an expanded sectional view of the trigger valve shown to FIG. 2A. It is side surface sectional drawing of the pressure control valve provided in the driving machine of FIG. It is an air duster provided in the driving machine of FIG. 1, and is side surface sectional drawing of the state which makes the pressure of a pressure accumulation chamber 1st pressure. It is an air duster provided in the driving machine of FIG. 1, It is side surface sectional drawing of the state which makes the pressure of a pressure accumulation chamber 2nd pressure. It is a top view which shows the position in the rotation direction of the knob of an air duster. It is an air duster provided in the driving machine of FIG. 1, and is a side sectional view in a state where compressed air in the pressure accumulation chamber is discharged to the outside. It is side surface sectional drawing which shows Embodiment 2 of a driving machine. It is an air duster provided in the handle of the driving machine of FIG. 8, and is front sectional drawing of a state which makes the pressure of a pressure accumulation chamber 1st pressure. It is an air duster provided in the handle | steering-wheel of the driving machine of FIG. 8, Comprising: It is front sectional drawing of the state which makes the pressure of an accumulation chamber 2nd pressure. It is an air duster provided in the handle of the driving machine of FIG. 8, and is front sectional drawing of the state which discharges the compressed air of a pressure accumulation chamber outside. It is side surface sectional drawing which shows Embodiment 3 of a driving machine. It is a pressure regulation valve and an air duster provided in a driving machine of Drawing 12, and is a sectional view of a state where an air duster corresponds to a high pressure mode. It is a pressure regulation valve and an air duster of Drawing 13, and an air duster is a sectional view corresponding to a low pressure mode. It is a pressure control valve and an air duster provided in the driving machine of FIG. 12, and is a sectional view of a state where compressed air of a pressure accumulation chamber is discharged from an air duster. It is side surface sectional drawing which shows Embodiment 4 of a driving machine. It is a 2nd operation part provided in the driving machine of FIG. 16, and is a sectional view of a state where the 2nd operation part corresponds to a low pressure mode. It is a 2nd operation part provided in the driving machine of FIG. 16, and is a sectional view of a state where the 2nd operation part corresponds to a high pressure mode. It is an air duster provided in the driving machine of FIG. 16, and an air duster is sectional drawing of the state which interrupted | blocked the pressure accumulation chamber and the exhaust port. It is an air duster provided in the driving machine of FIG. 16, and an air duster is sectional drawing of the state which connected the pressure accumulation chamber and the exhaust port.

  Hereinafter, of several embodiments of a driving tool included in the present invention, representative embodiments will be described with reference to the drawings.

Embodiment 1
The driving machine 10 shown in FIG. 1 has a housing 11. The housing 11 has a cylinder case 12, a handle 13 and a head cover 14. The cylinder case 12 has a cylindrical shape, and the handle 13 protrudes from the cylinder case 12 in the direction of the axis C1. The head cover 14 is attached to the cylinder case 12 so as to close the opening of the cylinder case 12. The injection unit 15 is fixed to the cylinder case 12. The injection unit 15 is attached to the cylinder case 12 opposite to the point where the head cover 14 is attached.

  The pressure accumulation chamber 17 is provided from the inside of the handle 13 to the inside of the cylinder case 12 as shown in FIGS. 1 and 2A. The plug 18 is attached to the handle 13 so that the air hose can be attached to and detached from the plug 18. The air hose is connected to an air compressor, and compressed air is supplied to the pressure accumulation chamber 17 via the air hose. The plug 18 is attached to a portion of the handle 13 most distant from the cylinder case 12 in the direction of the axis C1. A trigger 19 is provided in the housing 11, and the trigger 19 is pivotable about the support shaft 20. The trigger 19 is biased counterclockwise in FIG. 2A by the force of the lupling 197.

  A trigger valve 21 is provided on the handle 13. The trigger valve 21 has the plunger 22, the elastic member 23, and the cylinder members 180, 181, and 184 like FIG. 2B. The cylindrical members 180 and 184 are provided so as not to move relative to the handle 13. The elastic member 23 biases the plunger 22. The handle 13 has a passage 182 connected to the pressure accumulation chamber 17. An exhaust passage 183 is formed between the cylindrical member 184 and the handle 13. The exhaust passage 183 is connected to the outside D1. The tubular member 184 has a passage 185, 194. The passage 185 is connected to the main valve chamber 32 via a passage 195. An air chamber 186 is formed between the cylindrical member 180 and the cylindrical member 181.

  A passage 187 is provided in the cylindrical member 180. The passage 182 is connected to the passage 187. The passage 187 leads to the air chamber 186 through the axial hole 188 of the cylindrical member 180. The plunger 22 is disposed in the cylindrical member 181, across the shaft hole 188 and the outside D1. The plunger 22 is movable in the direction of the axis A9. The plunger 22 is biased toward the trigger 19 by the force of the elastic member 23.

  In the cylindrical member 180, seal members 189 and 190 are attached between the inner peripheral surface of the shaft hole 188 and the outer peripheral surface of the plunger 22. The seal member 190 shuts off the shaft hole 188 and the outside D1. The seal member 189 connects or disconnects the passage 187 and the air chamber 186. The tubular member 181 is disposed in the tubular member 184. Seal members 191, 192 and 193 are attached to the outer peripheral surface of the cylindrical member 181. The passage 194 is connected to the passage 182. The seal member 191 shuts off the passage 194 and the air chamber 186. The cylindrical member 181 is movable in the direction of the axis A9. A seal member 196 is attached to the outer peripheral surface of the plunger 22. The seal member 196 contacts the inner circumferential surface of the cylindrical member 181 to shut off the air chamber 186 and the exhaust passage 183. When the seal member 196 is separated from the inner circumferential surface of the cylindrical member 181, the seal member 196 connects the air chamber 186 and the exhaust passage 183.

  The push lever 24 is attached to the injection unit 15. The push lever 24 is movable relative to the ejection unit 15. The trigger valve 21 operates by the operation of the push lever 24 and the operation of the trigger 19.

  A cylinder 25 is provided in the cylinder case 12 and the head cover 14. The cylinder 25 is movable in the direction of the axis A1 with respect to the cylinder case 12, and a flange 26 is provided on the outer peripheral surface of the cylinder 25. A seal member 27 is attached to the outer periphery of the flange 26. The valve seat 28 is attached to the end of the cylinder 25 in the direction of the axis A1.

  A cylindrical main valve 30 is provided in the head cover 14. The main valve 30 is movable in the direction of the axis A1 within the head cover 14. An elastic member 31 is provided in the head cover 14, and the elastic member 31 is a metal compression spring. The elastic member 31 biases the main valve 30 in the direction of the axis A1, and the main valve 30 is pressed against the valve seat 28 by the force of the elastic member 31.

  A main valve chamber 32 is formed between the head cover 14 and the main valve 30. The main valve chamber 32 is connected to the passage 195 shown in FIG. 2B. When the trigger valve 21 operates, the main valve chamber 32 is switched to the first state and the second state. In the first state, the main valve chamber 32 is shut off from the pressure accumulation chamber 17 and connected to the outside D1 of the housing 11. The second state is a state in which the main valve chamber 32 is connected to the pressure accumulation chamber 17 and shut off from the outside D1.

  A stopper 33 is provided in the head cover 14 and the stopper 33 has an annular valve seat 34. A port 34A is formed by the main valve 30 and the valve seat 34. When the main valve 30 moves, the port 34A is opened and closed. An exhaust chamber 39 is formed in the head cover 14. The exhaust chamber 39 is connected to the outside D1. When the port 34A is open, the cylinder upper chamber 38 is connected to the outside D1 via the exhaust chamber 39. When the port 34A is closed, the cylinder upper chamber 38 and the exhaust chamber 39 are shut off.

  Further, the exhaust chamber 39 and the pressure accumulation chamber 17 are separated by a separator 29 which is a part of the head cover 14. The separator 29 has a tubular shape. The compressed air supplied to the pressure accumulation chamber 17 is not directly supplied to the exhaust chamber 39.

  The piston 35 is provided movably in the direction of the axis A1 in the cylinder 25. The piston 35 and the driver blade 36 constitute an impact part 70 integrated. The striking unit 70 is movable in the cylinder 25 in the direction of the axis A1. The seal member 37 is attached to the outer periphery of the piston 35. The cylinder case 12 operatively supports the striking portion 70 via the cylinder 25. The axis C1 intersects with the axis A1. The example of the driving machine 10 shown in FIG. 1 is an example in which the axis A1 and the axis C1 intersect at 90 degrees. The head cover 14 is attached to an end of the cylinder case 12 in the direction of the axis A1.

  The cylinder upper chamber 38 is provided between the stopper 33 and the piston 35 and inside the main valve 30. A passage 30A is formed by the main valve 30 and the valve seat 28. The passage 30A is a passage connecting the pressure accumulation chamber 17 and the cylinder upper chamber 38. The seal member 37 contacts the inner peripheral surface of the cylinder 25 to seal the cylinder upper chamber 38 in an airtight manner.

  The damper 40 is disposed from the inside of the cylinder 25 to the inside of the injection portion 15. The damper 40 is made of synthetic rubber, and the damper 40 has an axial hole 41. The driver blade 36 is movable in the axial hole 41 in the direction of the axis A1. The cylinder lower chamber 42 is formed in the cylinder 25 between the piston 35 and the damper 40. In the cylinder 25, a vent 43 is provided between the flange 26 and the damper 40. The vent 43 penetrates the cylinder 25 in the radial direction. A return air chamber 44 is provided in the cylinder case 12 and between the flange 26 and the injection portion 15. The vent 43 connects the cylinder lower chamber 42 and the return air chamber 44.

  A check valve 45 is provided in the cylinder 25. The check valve 45 is a ring made of synthetic rubber. The check valve 45 is elastically deformed by the air pressure of the cylinder lower chamber 42 to open the vent 43. The check valve 45 is in close contact with the outer peripheral surface of the cylinder 25 and closes the vent 43. In the cylinder 25, a vent 46 is provided between the vent 43 and the injection unit 15. The vent 46 penetrates the cylinder 25 in the radial direction, and always connects the cylinder lower chamber 42 and the return air chamber 44.

  The injection unit 15 has an axial hole 47 and an injection passage 48. The shaft hole 47 is disposed concentrically with the axis A1, and the driver blade 36 is movable in the direction of the axis A1 by the shaft hole 47 and the injection passage 48.

  The magazine 16 accommodates a plurality of nails 52 as fasteners. The plurality of nails 52 are arranged in a row and are connected to one another using connection elements. The magazine 16 has a supply mechanism 51. The supply mechanism 51 supplies the nails 52 in the magazine 16 one by one to the injection path 48.

  Next, a usage example of the driving machine 10 will be described. The compressed air is supplied to the pressure accumulation chamber 17, and the air pressure of the pressure accumulation chamber 17 is higher than the atmospheric pressure. When no operating force is applied to the trigger 19 and the push lever 24 is separated from the workpiece W 1, the cylinder upper chamber 38 is connected to the outside of the housing 11 via the exhaust chamber 39.

  Further, when the operating force is not applied to the trigger 19, the trigger 19 is stopped at the initial position. The plunger 22 connected to the trigger 19 stops at the bottom dead center. When the plunger 22 is stopped at the bottom dead center, the seal member 189 connects the passage 187 and the air chamber 186. For this reason, the passage 182 is connected to the air chamber 186 via the passage 187 and the axial hole 188. Further, the seal member 196 shuts off the air chamber 186 and the exhaust passage 183. The passage 182 is always connected to the passage 194. The cylindrical member 181 receives mutually opposing forces in the direction of the axis A9 by the air pressure of the air chamber 186 and the air pressure of the passage 194. Therefore, the cylindrical member 181 is biased in the direction of the axis A9 by the force of the elastic member 23, and the cylindrical member 181 stops at the top dead center closest to the exhaust passage 183.

  When the cylindrical member 181 is stopped at the top dead center, the seal member 192 is separated from the cylindrical member 184, and the passage 195 and the passage 185 are connected. Further, the seal member 193 is pressed against the cylinder member 184, and the passage 185 and the exhaust passage 183 are shut off. Then, the compressed air of the pressure accumulation chamber 17 is supplied to the main valve chamber 32 through the passage 182 and the passage 195. Main valve 30 receives a first force directed away from head cover 14 in the direction of axis A1. Further, the air pressure of the pressure accumulation chamber 17 is applied to the main valve 30, and the main valve 30 receives a second force in the direction toward the head cover 14.

  The main valve 30 is pressed against the valve seat 28 by the difference between the first force and the second force. That is, the main valve 30 closes the passage 30A, and the air pressure of the pressure accumulation chamber 17 is not transmitted to the cylinder upper chamber 38. Furthermore, the main valve 30 is separated from the valve seat 34 and the port 34A is open. Therefore, the air pressure in the cylinder upper chamber 38 is atmospheric pressure. The piston 35 is urged in the direction of the axis A1 by the air pressure of the cylinder lower chamber 42, and the piston 35 comes into contact with the stopper 33 and stops at the top dead center.

  Then, the user holds the handle 13 with one hand, applies an operating force to the trigger 19 with the finger of the hand holding the handle 13, and the push lever 24 presses the workpiece W1. When an operating force is applied to the trigger 19 and the trigger 19 is actuated counterclockwise in FIG. 2A, the plunger 22 is actuated in the direction of the axis A9 against the force of the elastic member 23, and the plunger 22 is stopped at the top dead center Do. When the plunger 22 stops at the top dead center, the seal member 189 shuts off the passage 187 and the air chamber 186. Further, the seal member 196 connects the air chamber 186 and the exhaust passage 183, and the air in the air chamber 186 is exhausted from the exhaust passage 183 to the outside D1.

  Then, the cylinder member 181 operates against the force of the elastic member 23 by the air pressure of the passage 194, the seal member 192 shuts off the passage 182 and the passage 185, and the seal member 193 acts as the passage 185 and the exhaust passage 183. Connect Therefore, the compressed air of the main valve chamber 32 is discharged to the outside D1 via the passages 195 and 185 and the exhaust passage 183, and the main valve chamber 32 is at the atmospheric pressure.

  Then, the main valve 30 operates toward the head cover 14 by the difference between the force of the elastic member 31 and the force corresponding to the air pressure of the pressure accumulation chamber 17. Therefore, the main valve 30 separates from the valve seat 28, the passage 30A is opened, and the valve seat 34 is pressed against the inner peripheral surface of the main valve 30, and the port 34A is closed.

  When the main valve 30 and the valve seat 28 are separated and the passage 30A is opened and the port 34A is closed, the air pressure in the cylinder upper chamber 38 is increased by the air pressure in the pressure accumulation chamber 17, and the piston 35 and the driver blade 36 are lowered. When the driver blade 36 enters the injection path 48, the driver blade 36 strikes the nail 52, and the nail 52 is driven into the workpiece W1.

  While the piston 35 is operating from top dead center to bottom dead center, air in the cylinder lower chamber 42 passes through the vent 46 and enters the return air chamber 44. When the seal member 37 is positioned between the stopper 33 and the vent 43 in the direction of the axis A1 during movement of the piston 35, the check valve 45 closes the vent 43. When the seal member 37 moves between the air vent 43 and the damper 40 while the piston 35 is moving, the check valve 45 opens the air vent 43, and part of the air in the cylinder upper chamber 38 passes through the air vent 43. , Enters the return air chamber 44. Thus, the air pressure in the return air chamber 44 and the cylinder lower chamber 42 is increased.

  Then, after the driver blade 36 drives the nail 52, the user releases the operation force on the trigger 19 and separates the end 63 of the push lever 24 from the workpiece W1. Then, the push lever 24 returns to the initial position and stops. Furthermore, the plunger 22 operates in the direction of the axis A9 by the force of the elastic member 23, and the plunger 22 stops at the bottom dead center. When the plunger 22 stops at the bottom dead center, the seal member 189 connects the air chamber 186 and the passage 187. Further, the seal member 196 shuts off the air chamber 186 and the exhaust passage 183. For this reason, the air pressure of the air chamber 186 rises. The cylindrical member 181 is actuated toward the exhaust passage 183 by the force of the elastic member 23 and stopped. Then, the seal member 192 connects the passage 194 and the passage 185, and the seal member 193 shuts off the passage 185 and the exhaust passage 183.

  For this reason, the compressed air of the pressure accumulation chamber 17 is sent to the main valve chamber 32, and the air pressure of the main valve chamber 32 rises. The main valve 30 operates in a direction away from the head cover 14 to open the port 34A and block the passage 30A. In addition, the cylinder upper chamber 38 is connected to the outside of the housing 11 via the exhaust chamber 39, and the cylinder upper chamber 38 has an atmospheric pressure.

  Furthermore, the piston 35 that reaches the bottom dead center after the driver blade 36 drives the nail 52 moves toward the top dead center by the air pressure of the cylinder lower chamber 42, and the driver blade 36 ascends with the piston 35. The piston 35 contacts the stopper 33, and the piston 35 stops at the top dead center.

  The driving machine 10 has a pressure adjusting mechanism. The pressure control mechanism has a pressure control valve 71 and an air duster 72. The pressure control valve 71 is a mechanism capable of adjusting the pressure of the pressure accumulation chamber 17 in a state where compressed air is supplied to the pressure accumulation chamber 17. The air duster 72 has both a function as a second operation mechanism for switching the state of the pressure adjustment valve 71 and a function as a third operation mechanism for discharging the compressed air from the pressure accumulation chamber 17 to the outside D1.

  The pressure control valve 71 is disposed between the portion where the trigger valve 21 is disposed and the end of the handle 13 most distant from the cylinder case 12 in the direction of the axis C1. The pressure control valve 71 has a casing 73, an operating member 74, a valve seat 75, an end cover 76, and a valve body 77, as shown in FIG. The end cover 76 is fixed to the handle 13 by a screw member 311. The casing 73 has a cylindrical portion 78 and a flange portion 79, and the flange portion 79 is sandwiched between the handle 13 and the end cover 76. An air chamber 82 is formed between the end cover 76 and the valve seat 75. The end cover 76 has a mounting hole 80 and the plug 18 is mounted to the mounting hole 80. The passage 83 of the plug 18 is connected to the air chamber 82.

  In FIG. 3, the valve seat 75 is fixed so as not to move in the casing 73. The valve seat 75 has a passage 81, which is connected to the air chamber 82. The actuating member 74 has a cylindrical shape, and the actuating member 74 is movable in the direction of the axis A4. The actuating member 74 has a passage 93, which connects the passage 81 and the pressure accumulation chamber 17. When the air hose is connected to the plug 18, compressed air in the air hose is supplied to the pressure accumulation chamber 17 via the passage 83, the air chamber 82, the passage 81 and the passage 93.

  An air chamber 87 is provided between the inner surface of the cylindrical portion 78 and the outer surface of the actuating member 74. A biasing member 84 is provided in the air chamber 87. The air chamber 87 is sealed by seal members 88 and 89. The biasing member 84 biases the actuating member 74 in the direction of the axis A4 in a direction toward the valve seat 75. The biasing member 84 is a metal compression spring as an example.

  As shown in FIG. 3, the actuating member 74 is provided with a shaft 85, and the shaft 85 is disposed across the passage 81 and the air chamber 82. A valve body 77 is attached to a portion of the shaft 85 located in the air chamber 82. The valve body 77 is made of synthetic rubber as an example. A biasing member 86 is provided in the air chamber 82. The biasing member 86 biases the valve body 77 in a direction approaching the valve seat 75. A port 121 is formed between the valve body 77 and the valve seat 75. The biasing member 86 is a metal compression spring as an example. In the handle 13 a pipe 90 is provided, which has a passage 91. A passage 92 is formed in the handle 13, and the passage 91 connects the passage 92 and the air chamber 87.

  The air duster 72 is provided on the head cover 14. The air duster 72 is a valve, and the air duster 72 has a first movable element 94, a second movable element 95, a shaft member 96, a receiving member 97, and a receiving chamber 98, as shown in FIG. The storage chamber 98 is a hole provided in the head cover 14. The first movable element 94, the second movable element 95, the shaft member 96 and the receiving member 97 are disposed in the storage chamber 98. The first movable element 94 is rotatable relative to the head cover 14 about an axis A4. An annular retaining member 176 is attached to the outer peripheral surface of the first movable element 94. The stopper 176 is pressed against the inner surface of the storage chamber 98. Therefore, the first movable element 94 does not move relative to the head cover 14 in the direction of the axis A4. Further, the first movable element 94 has a tubular shape having an axial hole 100, and a passage 101 penetrating the first movable element 94 in the radial direction is provided. The passage 101 is connected to the axial hole 100. An annular inclined surface 122 is formed on the inner surface surrounding the axial hole 100. The inclined surface 122 is inclined with respect to the axis A4.

  As shown in FIG. 4, an exhaust port 102 is provided in the head cover 14, and the exhaust port 102 is connected to the outside D <b> 1 of the housing 11. The passage 101 is connected to the exhaust port 102. The first movable element 94 has an inclined surface 99 at the end in the direction of the axis A4. Seal members 103 and 104 are provided between the inner surface of the storage chamber 98 and the outer peripheral surface of the first movable element 94. The seal members 103 and 104 seal the connection between the passage 101 and the exhaust port 102.

  The second movable element 95 is movable in the direction of the axis A4 in the accommodation chamber 98 and is provided so as not to rotate. The second movable element 95 has a tubular shape, and the second movable element 95 has an axial hole 105. A seal member 106 is attached to the outer peripheral surface of the second movable element 95. An inclined surface 119 is provided at an end of the second movable element 95 on the first movable element 94 side. The inclined surface 119 is inclined with respect to the axis A4.

  The receiving member 97 shown in FIG. 4 has a tubular shape, and the receiving member 97 has an exhaust port 107. The exhaust port 107 connects the shaft hole 105 and the outside of the housing 11. The receiving member 97 has an outward facing flange 108. A space 113 is formed in the receiving chamber 98 between the outward flange 108 and the second movable element 95. The biasing member 109 is disposed in the space 113. The outward flange 108 is pressed against the head cover 14, and the biasing member 109 biases the second movable element 95 in the direction of the axis A4 toward the first movable element 94, and the second movable element 95 and the first The movable element 94 is in constant contact with the movable element 94. The biasing member 109 is a metal compression spring as an example.

  Seal members 110 and 111 are attached to the receiving member 97. The seal member 110 contacts or separates the inner surface of the second movable element 95 depending on the position of the second movable element 95 in the direction of the axis A4. The sealing member 111 always contacts the head cover 14 and shuts off the housing chamber 98 and the outside D1. A passage 112 is provided in the head cover 14. The passage 112 is connected to the space 113.

  The shaft member 96 is disposed across the shaft holes 100 and 105. The shaft member 96 is movable in the direction of the axis A4 with respect to the first movable element 94 and the second movable element 95. A knob 114 is attached to the end of the shaft member 96. The knob 114 is disposed on the outer side D1, and the knob 114 is integrally rotatable with the shaft member 96. The knob 114 is provided with a mark 114A, and the user can visually recognize the mark 114A to recognize the operation position in the rotational direction of the knob 114. An elastic member 120 is provided between the knob 114 and the first movable element 94. The elastic member 120 is a metal compression spring as an example. The knob 114 is biased away from the first movable element 94 by the force of the elastic member 120.

  Seal members 115, 116, and 117 are attached to the outer peripheral surface of the shaft member 96. The sealing member 115 seals the shaft hole 100. The force of the elastic member 120 urges the shaft member 96 together with the knob 114, and the seal member 116 is pressed against the inclined surface 122 of the first movable element 94 so that the knob 114 and the shaft member 96 can move relative to the first movable element 94. And stop at a predetermined position in the direction of the axis A4. The sealing member 117 contacts the inner surface of the second movable element 95 to form a sealing surface.

  A passage 118 is provided in the head cover 14. The passage 118 is always connected to the pressure accumulation chamber 17. The passage 112 is always connected to the passage 92.

  In the driving machine 10, the striking force that the striking unit 70 applies to the nail 52 is determined according to the pressure of the compressed air supplied to the cylinder upper chamber 38, that is, the pressure of the pressure accumulation chamber 17.

  When the nail 52 is driven into the workpiece W 1, part of the compressed air in the pressure accumulation chamber 17 is supplied to the main valve chamber 32 and discharged from the exhaust passage 183 to the outside D 1. A portion of the compressed air of the pressure accumulation chamber 17 is supplied to the cylinder upper chamber 38 and discharged from the exhaust chamber 39 to the outside D1. Further, part of the compressed air of the pressure accumulation chamber 17 is supplied to the air chamber 186 and discharged from the exhaust passage 183 to the outside D1. The air pressure in the pressure accumulation chamber 17 decreases when the nail 52 is driven into the workpiece W1.

  The function of the pressure adjusting valve 71 to adjust the pressure of the pressure accumulation chamber 17 will be described. Compressed air in the air hose flows into the pressure accumulation chamber 17 via the passage 83, the air chamber 82, the port 121, the passage 81 and the passage 93. The actuating member 74 receives the biasing force F1 in the direction approaching the valve seat 75 and the biasing force F2 in the direction away from the valve seat 75. The biasing force F1 is determined according to the pressure of the air chamber 87, the pressure receiving area of the actuating member 74, and the biasing force of the biasing member 84. The biasing force F2 is determined according to the pressure of the compressed air entering the gap between the actuating member 74 and the valve seat 75 and the pressure receiving area of the actuating member 74.

  When the biasing force F2 is larger than the biasing force F1, the actuating member 74 is separated from the valve seat 75, and the port 121 is closed. When the biasing force F2 is smaller than the biasing force F1, the actuating member 74 comes in contact with the valve seat 75 and stops, and the port 121 is open. When the biasing force F1 and the biasing force F2 are the same, the actuating member 74 is not actuated.

  When the pressure in the pressure accumulation chamber 17 exceeds the predetermined pressure, the biasing force F2 received by the operating member 74 is larger than the biasing force F1, and the port 121 is closed. When the pressure of the pressure accumulation chamber 17 becomes lower than a predetermined pressure and the biasing force F2 received by the operating member 74 becomes smaller than the biasing force F1, the operating member 74 operates in a direction approaching the valve seat 75, and the port 121 opens. When the port 121 is opened, the compressed air in the air chamber 82 is supplied to the pressure accumulation chamber via the port 121, the passage 81 and the passage 93, and the pressure in the pressure accumulation chamber 17 is increased.

  Then, when the pressure of the pressure accumulation chamber 17 exceeds a predetermined pressure and the biasing force F2 received by the operating member 74 becomes larger than the biasing force F1, the operating member 74 is separated from the valve seat 75 and the port 121 is closed. The pressure adjustment valve 71 operates the operation member 74 according to the pressure of the pressure accumulation chamber 17. The pressure adjusting valve 71 adjusts the actual pressure of the pressure accumulation chamber 17 so as to be kept within a predetermined pressure range.

  The driving machine 10 of the present disclosure can switch the predetermined pressure range in a plurality of stages by the user operating the air duster 72. The multiple stages are, as an example, two stages of a low pressure mode and a high pressure mode.

  First, an example in which the user selects the low pressure mode will be described. The user stops the position of the knob 114 in the rotational direction at the first operation position shown on the upper side in FIG. When the user stops the knob 114 at the first operating position, the first movable element 94 stops at the first rotational position shown in FIG. 4 in the rotational direction about the axis A1. When the first movable element 94 stops at the first rotational position with respect to the second movable element 95, the inclined surface 99 and the inclined surface 119 intersect. Further, the second movable element 95 is pushed toward the flange 108 against the biasing force of the biasing member 109, and the second movable element 95 is the position closest to the flange 108 in the direction of the axis A4, that is, , Stop at the first position.

  When the first movable element 94 stops at the first position shown in FIG. 4, the seal member 106 is pressed against the inner surface of the storage chamber 98, and the seal member 106 shuts off the passage 118 and the passage 112. For this reason, the compressed air of the pressure accumulation chamber 17 is not supplied to the air chamber 87, and the pressure of the air chamber 87 is the first regulated pressure.

  Next, an example in which the user selects the high pressure mode will be described. The user stops the position of the knob 114 in the rotational direction as a second operation position shown in the lower part of FIG. When the knob 114 stops at the second operating position, the first movable element 94 stops at the second rotational position shown in FIG. 5 with respect to the second movable element 95 in the rotational direction about the axis A1. When the first movable element 94 stops at the second rotational position, the inclined surface 99 and the inclined surface 119 are parallel. In addition, the second movable element 95 is stopped at the position farthest from the flange 108, that is, the second position, by the biasing force of the biasing member 109.

  When the second movable element 95 stops at the second position, the seal member 106 separates from the inner surface of the storage chamber 98, and the seal member 106 connects the passage 118 and the passage 112. Therefore, the compressed air of the pressure accumulation chamber 17 is supplied to the air chamber 87, and the pressure of the air chamber 87 is the second regulated pressure. The second pressure regulation is higher than the first pressure regulation.

  In addition, when the second movable element 95 stops at the second position, the seal member 110 contacts the inner circumferential surface of the second movable element 95, and the seal member 110 shuts the axial hole 105 and the space 113. Therefore, compressed air passing through the space 113 can be prevented from being discharged from the exhaust port 107 to the outside D1.

  Thus, the user operates the air duster 72 to switch the pressure of the air chamber 87 between the first pressure regulation and the second pressure regulation, whereby the pressure range of the pressure accumulation chamber 17 regulated by the pressure regulation valve 71 is It can be switched in two stages. The pressure range of the pressure accumulation chamber 17 corresponding to the high pressure mode is higher than the pressure range of the pressure accumulation chamber 17 corresponding to the low pressure mode.

  Next, an example in which the user operates the air duster 72 to discharge the compressed air of the pressure accumulation chamber 17 to the outside D1 will be described. The user applies an operating force in the direction of axis A 4 to the knob 114 of the air duster 72 with the finger of the hand holding the handle 13.

  The knob 114 shown in FIGS. 4 and 5 is in a state where the user does not apply an operation force in the direction of the axis A4 to the knob 114. The knob 114 is pushed by the force of the elastic member 120, and the seal member 116 is pressed against the inclined surface 122, so that the shaft member 96 and the knob 114 stop at the initial position in the direction of the axis A4 with respect to the first movable element 94. ing. When the shaft member 96 is at rest in the initial position, the seal member 116 shuts off the passage 118 and the passage 101. Therefore, the compressed air in the pressure accumulation chamber 17 is not discharged from the exhaust port 102 to the outside D1.

  The knob 114 shown in FIG. 7 is in a state in which the user applies an operation force in the direction of the axis A4 to the knob 114, that is, a state in which the knob 114 is pressed. The knob 114 operates against the force of the elastic member 120, and the knob 114 contacts the head cover 14 to stop the knob 114 and the shaft member 96 in the operating position in the direction of the axis A4 with respect to the first movable element 94. doing. When the shaft member 96 is stopped in the operating position, the seal member 116 is separated from the inclined surface 122, and the passage 118 and the passage 101 are connected. Therefore, the compressed air in the pressure accumulation chamber 17 is discharged from the exhaust port 102 to the outside D1.

  When the second movable element 95 is closest to the flange 108 and stopped as shown in FIG. 7, the seal member 106 is separated from the inner surface of the storage chamber 98, and the passage 112 and the shaft hole 100 are connected. Therefore, the compressed air in the air chamber 87 is discharged to the outside D1 via the passage 112 and the exhaust port 102. Furthermore, when the user releases the operation force in the direction of the axis A4 applied to the knob 114, the knob 114 and the shaft member 96 move in the direction of the axis A4 by the force of the elastic member 120, and the seal member 116 contacts the inclined surface 122. , The knob 114 and the shaft member 96 stop at the initial position.

  Furthermore, the seal member 117 contacts the inner surface of the second movable element 95 to form a seal surface regardless of the position of the first movable element 94 and the second movable element 95 in the direction of the axis A4. Furthermore, the axial hole 105 is always connected to the outside through the exhaust port 107. Therefore, when the second movable element 95 moves in the direction of the axis A4 with respect to the first movable element 94, it is possible to suppress an increase in the movement resistance of the second movable element 95.

  Thus, the air duster 72 has the first function and the second function. The first function is a function of discharging the compressed air of the pressure accumulation chamber 17 to the outside D1. The second function is a function of switching the state of the pressure adjustment valve 71 that adjusts the pressure of the pressure accumulation chamber 17 in a state where compressed air is supplied to the pressure accumulation chamber 17. For this reason, it is not necessary to provide a dedicated operation member for switching the state of the pressure adjustment valve 71. Therefore, the driving machine 10 can obtain at least one of the first effect, the second effect, and the third effect.

  The first effect is to suppress an increase in the number of parts provided in the housing 11. The second effect is to suppress the increase in size of the housing 11. Specifically, the knob 114, the first movable element 94, and the shaft member 96 are a part of an element that adjusts the pressure of the compressed air of the pressure accumulation chamber 17, and the compressed air of the pressure accumulation chamber 17 is outside the D1. It is part of the elements to be discharged. That is, in the air duster 72, parts of parts are made common in order to achieve different functions. Therefore, the enlargement of the housing 11 can be suppressed. Further, the number of operation members projecting in the radial direction of the handle 13, for example, in the direction intersecting with the axis C1 can be suppressed, and the housing 11 can be prevented from being enlarged in the radial direction of the handle 13. The third effect is to improve the operability of the user. Specifically, the user can operate the trigger 19 and the air duster 72 with the finger of the hand holding the handle 13 respectively.

  The comparative example 1 of a driving machine is shown by a dashed-two dotted line in FIG. The first comparative example of the driving machine has a handle 400, a pressure adjustment mechanism 401, a second operation mechanism 402 for switching the state of the pressure adjustment mechanism 401, and a plug 403. The plug 403 is provided at the end of the handle 400 in the direction of the axis C1. Further, the pressure adjustment mechanism 401 and the pressure adjustment mechanism 401 are arranged side by side in a direction intersecting the axis C1.

  In the first embodiment of the driving machine 10, a pressure control valve 71 is provided on the handle 13, and an air duster 72 is provided on the head cover 14. For this reason, the handle 13 of Embodiment 1 of the driving machine 10 is smaller than the handle 400 of Comparative Example 1 of the driving machine in the direction intersecting with the axis C1.

Second Embodiment
Embodiment 2 of the driving tool is shown in FIG. In the driving machine 10 shown in FIG. 8, the air duster 72 is disposed at the connection point between the handle 13 and the cylinder case 12. More specifically, an air duster 72 is disposed between the trigger valve 21 and the cylinder 25 in the direction of the axis C1 of the handle 13. An air duster 72 is arranged in the arrangement area of the handle 13 in the direction of the axis A1. When the air duster 72 is viewed in cross section in a plane perpendicular to the axis C1 as shown in FIG. 9, the axis A4 is disposed along the width direction of the handle 13. The storage chamber 98 is provided in the handle 13, and the exhaust port 102 is provided in the handle 13. The other configuration of the air duster 72 is the same as that of the air duster 72 shown in FIG. The other structure of the driving machine 10 shown in FIG. 8 is the same as the structure of the driving machine 10 shown in FIG.

  The air duster 72 shown in FIGS. 9, 10 and 11 can be operated in the same manner as the air duster 72 shown in FIGS. 4, 5 and 7. That is, the user can operate the air duster 72 and the trigger 19 with the finger of the hand holding the handle 13 respectively. The air duster 72 shown in FIGS. 9, 10 and 11 has the same function as the air duster 72 shown in FIGS. 4, 5 and 7. The air duster 72 shown in FIG. 9 can set the pressure of the air chamber 87 of the pressure control valve 71 of FIG. 3 to the first pressure, similarly to the air duster 72 shown in FIG. The air duster 72 shown in FIG. 10 can set the pressure of the air chamber 87 of the pressure control valve 71 of FIG. 3 to the second pressure, similarly to the air duster 72 shown in FIG.

  The air duster 72 shown in FIG. 11 can discharge the compressed air of the pressure accumulation chamber 17 to the outside D1. The operating position in the rotational direction of the knob 114 shown in FIGS. 9, 10 and 11 is the same as the operating position of the knob 114 shown in FIG.

  Thus, the driving machine 10 of the second embodiment can obtain the same effects as the driving machine 10 of the first embodiment. Further, in the driving machine 10 of the second embodiment, the air duster 72 is provided on the handle 13. For this reason, it can suppress that the space required for arrangement | positioning of the air duster 72 protrudes in the radial direction of the handle 13. The radial direction of the handle 13 is a direction intersecting with the axis C1.

  The second comparative example of the driving machine is shown by a two-dot chain line in FIG. The second comparative example of the driving machine has a handle 400, a pressure adjustment mechanism 401, a second operation mechanism 402 for switching the state of the pressure adjustment mechanism 401, and a plug 403. The plug 403 is provided at the end of the handle 400 in the direction of the axis C1. Further, the pressure adjustment mechanism 401 and the pressure adjustment mechanism 401 are arranged side by side in a direction intersecting the axis C1. Furthermore, an air duster 404 as a third operation mechanism is provided on the head cover 405. That is, the second operation mechanism 402 and the air duster 404 are provided separately and arranged at different positions.

  In the second embodiment of the driving machine 10, an air duster 72 which doubles as a second operation mechanism and a third operation mechanism is provided on the handle 13. For this reason, Embodiment 2 of the driving machine 10 can suppress a number of parts compared with the comparative example 2 of a driving machine, and can suppress an enlargement. Specifically, Embodiment 2 of the driving machine 10 is miniaturized in the direction in which the handle 13 intersects with the axis C1 with respect to Comparative Example 2 of the driving machine.

  In the second embodiment of the driving machine 10, the air duster 72 is disposed in the arrangement area of the handle 13 in the direction of the axis C1. Therefore, in the second embodiment of the driving machine 10, the head cover 14 is miniaturized in the direction of the axis C1 as compared to the second comparative example of the driving machine.

Third Embodiment
Embodiment 3 of the driving machine is shown in FIG. In the driving machine 10 shown in FIG. 12, a pressure control valve 71 and an air duster 72 are provided at the end of the handle 13 opposite to the cylinder case 12. That is, the arrangement range of the pressure adjustment valve 71 and the arrangement range of the air duster 72 at least partially overlap in the direction of the axis C1. Further, a pressure control valve 71 and an air duster 72 are disposed in the disposition area of the handle 13 in the direction of the axis A1. The trigger 19 and the trigger valve 21 are disposed between the cylinder 25 and the pressure adjustment valve 71 in the direction of the axis C1.

  The pressure control valve 71 has a casing 130, an actuating member 131, a valve seat 132, an end cover 133, and a valve body 134, as shown in FIG. The casing 130 is fixed to the handle 13. The casing 130 has a storage chamber 135 and a support hole 136. The operating member 131, the valve seat 132 and the end cover 133 are disposed in the storage chamber 135. The valve seat 132 is disposed between the actuating member 131 and the end cover 133 in the direction of the axis A5 of the housing chamber 135. The axis A5 is parallel to the axis C1. An air chamber 151 is formed between the end cover 133 and the valve seat 132. The end cover 133 has an attachment hole 137, and the plug 18 is attached to the attachment hole 137. The passage 83 of the plug 18 is connected to the air chamber 151.

  The valve seat 132 is fixed so as not to move in the storage chamber 135. The valve seat 132 has a passage 138, which is in communication with the air chamber 151. The actuating member 131 is movable in the direction of the axis A5 with respect to the casing 130. A biasing member 139 is provided in the storage chamber 135. The biasing member 139 biases the actuating member 131 closer to the valve seat 132 in the direction of the axis A5. The biasing member 139 is a metal compression spring as an example. The casing 130 has a space 164 and a passage 165. The biasing member 139 is disposed in the space 164. The passage 165 connects the space 164 and the support hole 136.

  The operating member 131 is provided with a shaft 140, and the shaft 140 is disposed across the passage 138 and the air chamber 151. A valve body 134 is attached to a portion of the shaft 140 located in the air chamber 151. The valve body 134 is made of synthetic rubber as an example. A biasing member 141 is provided in the air chamber 151. The biasing member 141 biases the valve body 134 in a direction approaching the valve seat 132. The biasing member 141 is a metal compression spring as an example.

  In the storage chamber 135, an air chamber 142 is formed between the actuating member 131 and the valve seat 132. The air chamber 142 is connected to the air chamber 151 via the passage 138. A passage 143 is provided in the casing 130, and the passage 143 connects the air chamber 142 and the pressure accumulation chamber 17. Sealing members 144 and 145 are provided in the storage chamber 135, and the sealing members 144 and 145 seal the air chamber 142.

  An air chamber 146 is formed in the housing chamber 135 between the outer surface of the actuating member 131 and the casing 130. A seal member 147 is provided in the storage chamber 135, and the seal members 144 and 147 seal the air chamber 146. The casing 130 has a passage 166 connecting the air chamber 146 and the support hole 136. Furthermore, the casing 130 has a passage 172 connecting the air chamber 142 and the support hole 136.

  The air duster 72 has a first movable element 148, a second movable element 149, a shaft member 150 and a support hole 136, as shown in FIG. The first movable element 148, the second movable element 149 and the shaft member 150 are disposed in the support hole 136. The first movable element 148 is rotatable in the support hole 136 and does not move in the direction of the axis A6. The axis A6 is the center of the support hole 136, and the axis A6 is parallel to the axis A5. Also, the first movable element 148 has a tubular shape having an axial hole 152.

  A seal member 153 is attached to the outer peripheral surface of the first movable element 148. A groove 174 is provided in the casing 130, and a part of the seal member 153 is disposed in the groove 174. The first movable element 148 is positioned in the direction of the axis A6 with respect to the casing 130 by the engagement force between the seal member 153 and the casing 130. The seal member 153 seals the support hole 136. An annular inclined surface 175 is formed at a portion of the first movable element 148 disposed in the support hole 136. The inclined surface 175 is inclined with respect to the axis A6.

  A part of the shaft member 150 in the direction of the axis A6 is disposed in the shaft hole 152. The knob 154 is attached to the shaft member 150. The knob 154 is attached to the shaft member 150 via a pin 155. The first movable element 148 has a support hole 156, and the pin 155 is disposed in the support hole 156. The knob 154 is actuatable via the pin 155 with the first movable element 148 about an axis A6. The pin 155 is movable in the support hole 156 in the direction of the axis A6. That is, the shaft member 150 can move by a predetermined amount with respect to the first movable element 148 in the direction of the axis A6.

  A biasing member 157 is provided in the shaft hole 152. The biasing member 157 biases the knob 154 away from the casing 130 in the direction of the axis A6. The biasing member 157 is a metal compression spring as an example. The shaft hole 152 is provided with a seal member 158. The seal member 158 seals between the outer peripheral surface of the shaft member 150 and the inner surface of the shaft hole 152.

  An exhaust port 159 is provided in the casing 130, and the exhaust port 159 is connected to the outside of the casing 130. The exhaust port 159 is connected to the support hole 136.

  The second movable element 149 is movable in the support hole 136 in the direction of the axis A6 and is provided so as not to rotate. The second movable element 149 has a tubular shape, and the second movable element 149 has an axial hole 160. A portion of the shaft member 150 is disposed in the shaft hole 160. The shaft member 150 is rotatable around an axis A6 with respect to the second movable element 149. Seal members 161, 162, and 163 are attached to the outer peripheral surface of the second movable element 149. An inclined surface 173 is formed at the end of the second movable element 149 closer to the first movable element 148. The inclined surface 173 is inclined with respect to the axis A6.

  The casing 130 has a wall 167, and a space 168 is formed between the wall 167 in the support hole 136 and the second movable element 149. The wall 167 has an axial hole 169, and a part of the axial member 150 is disposed in the axial hole 169. The axial hole 169 connects the pressure accumulation chamber 17 and the space 168. The seal member 170 is attached to the outer peripheral surface of the shaft member 150. When the shaft member 150 moves in the direction of the axis A 6, the seal member 170 contacts the wall 167 in the shaft hole 169 or separates from the wall 167.

  A biasing member 171 is provided in the space 168. The biasing member 171 biases the second movable element 149 closer to the first movable element 148 in the direction of the axis A6. The second movable element 149 is always in contact with the first movable element 148. The biasing member 171 is a metal compression spring as an example.

  The compressed air sent from the air hose to the passage 83 of the plug 18 flows into the pressure accumulation chamber 17 via the air chamber 151, the passage 138, the air chamber 142 and the passage 143. The actuating member 131 shown in FIG. 13 receives biasing forces F1 and F2 in directions opposite to each other in the direction of the axis A5. The biasing force F1 is determined according to the pressure of the air chamber 146 and the pressure receiving area of the actuating member 131, the pressure of the space 164 and the pressure receiving area of the actuating member 131, and the biasing force of the biasing member 139. The biasing force F2 is determined according to the pressure of the air chamber 142 connected to the pressure accumulation chamber 17 and the pressure receiving area of the actuating member 131.

  When the biasing force F2 is larger than the biasing force F1, the actuating member 131 is separated from the valve seat 132 and stopped, and the port 199 is closed. When the biasing force F2 is smaller than the biasing force F1, the actuating member 131 contacts and stops the valve seat 132, and the port 199 is open. When the biasing force F1 and the biasing force F2 are the same, the actuating member 131 is not actuated.

  When the pressure in the pressure accumulation chamber 17 exceeds the predetermined pressure, the biasing force F2 received by the actuating member 131 is larger than the biasing force F1, and the port 199 is closed. When the pressure in the pressure accumulation chamber 17 becomes lower than the predetermined pressure by use of the driving machine 10 and the biasing force F2 received by the operating member 131 becomes smaller than the biasing force F1, the operating member 131 operates in a direction approaching the valve seat 132, Port 199 is open. When the port 199 is opened, the compressed air in the air chamber 151 is supplied to the pressure accumulation chamber 17 via the port 199, the passage 138, the air chamber 142 and the passage 143, and the pressure in the pressure accumulation chamber 17 is increased.

  Then, when the pressure of the air chamber 142 connected to the pressure accumulation chamber 17 exceeds the predetermined pressure and the biasing force F2 received by the operating member 131 becomes larger than the biasing force F1, the operating member 131 separates from the valve seat 132 and the port 199 closes. . The pressure adjustment valve 71 operates the operation member 131 according to the pressure of the pressure accumulation chamber 17. The pressure adjusting valve 71 adjusts the actual pressure of the pressure accumulation chamber 17 so as to be kept within a predetermined pressure range.

  The driving machine 10 of the present disclosure has a predetermined pressure range in a plurality of stages, for example, three stages of a high pressure mode, an intermediate pressure mode, and a low pressure mode, as a user operates the air duster 72 shown in FIGS. It is switchable.

  First, when the user selects the high pressure mode, the knob 154 and the first movable element 148 are rotated, and the inclined surface 173 intersects with the inclined surface 175 as shown in FIG. Stop. Then, the second movable element 149 is pushed by the first movable element 148 and stops at the position closest to the wall 167 against the biasing force of the biasing member 171. Then, the air chamber 142 is connected to the air chamber 146 via the passage 172, the support hole 136, and the passage 166. In addition, the air chamber 142 is connected to the space 164 through the passage 172, the support hole 136, and the passage 165. The biasing force F2 received by the actuating member 131 is maximum.

  A case where the user sets the operation position of the knob 154 to the medium pressure mode will be described. The air chamber 142 communicates with the air chamber 146 via the passage 172, the support hole 136, and the passage 166. Also, the seal member 162 shuts off the passage 172 and the passage 165. When the medium pressure mode is set, the biasing force F2 received by the operating member 131 is smaller than the biasing force F2 received by the operating member 131 when the high pressure mode is set.

  The case where the user sets the operation position of the knob 154 to the low pressure mode will be described. The user rotates the knob 154 and the first movable element 148, and stops the first movable element 148 with the inclined surface 173 and the inclined surface 175 parallel as shown in FIG. Then, the biasing force of the biasing member 171 causes the second movable element 149 to stop at the position farthest from the wall 167, that is, the second position. The seal member 163 shuts off the air chamber 142 and the passage 172, and shuts off the space 164 and the passage 172. When the low pressure mode is set, the biasing force F2 received by the actuating member 131 is smaller than the biasing force F2 received by the actuating member 131 when the medium pressure mode is set.

  In this manner, the user can arbitrarily switch between the high pressure mode, the medium pressure mode, and the low pressure mode by adjusting the position of the knob 154 in the rotational direction. That is, the biasing force F2 received by the actuating member 131 can be switched in three steps, and the setting range of the pressure of the pressure accumulation chamber 17 can be set in three steps. The setting range of the pressure corresponding to the medium pressure mode is lower than the setting range of the pressure corresponding to the high pressure mode. The setting range of the pressure corresponding to the low pressure mode is lower than the setting range of the pressure corresponding to the medium pressure mode.

  Next, an example in which the user operates the air duster 72 shown in FIGS. 13 and 14 to discharge the compressed air from the pressure accumulation chamber 17 to the outside D1 will be described. The knob 154 shown in FIGS. 13 and 14 is in a state in which the user does not apply an operation force in a direction in which the knob 154 approaches the casing 130 in the direction of the axis A6. The biasing force of the biasing member 157 is transmitted to the shaft member 150 via the pin 155. The pin 155 is pressed against the inner surface of the support hole 156, and the shaft member 150 is stopped at the initial position in the direction of the axis A6 with respect to the casing 130.

  When the shaft member 150 is stopped at the initial position shown in FIGS. 13 and 14, the seal member 170 is pressed against the shaft hole 169 of the wall 167 to form a sealing surface. That is, the seal member 170 shuts off the pressure accumulation chamber 17 and the space 168. Therefore, the compressed air of the pressure accumulation chamber 17 is not discharged from the axial hole 169.

  On the other hand, when the user applies an operating force to the knob 154 and the shaft member 150 to move the knob 154 closer to the casing 130 in the direction of the axis A6, the shaft member 150 stops at the operating position shown in FIG. Then, the seal member 170 separates from the inner surface of the axial hole 169 of the wall 167. Therefore, the accumulator chamber 17 and the space 168 are connected, and the compressed air of the accumulator chamber 17 is formed between the space 168, the shaft hole 160, the first movable element 148 and the second movable element 149 in the support hole 136, It is exhausted to the outside D1 via the exhaust port 159. When the user releases the operation force on the knob 154 and the shaft member 150, the shaft member 150 is operated by the force of the biasing member 171 and stops at the initial position.

  Thus, the air duster 72 shown in FIG. 13, FIG. 14 and FIG. 15 has the first function and the second function described above. Therefore, the driving machine 10 can obtain at least one of the first effect, the second effect, and the third effect described above.

  The third comparative example of the driving machine is shown by a two-dot chain line in FIG. In the third comparative example, an air duster 404 is further provided to the head cover 405. The air duster 404 does not have the function of switching the state of the pressure adjustment mechanism. For this reason, the second operation mechanism is arranged, for example, at the arrangement position of the air duster 72 in the second embodiment of the driving machine 10.

  In the second embodiment of the driving machine 10, an air duster 72 which doubles as a second operation mechanism and a third operation mechanism is provided on the handle 13. For this reason, Embodiment 3 of the driving machine 10 can suppress a number of parts compared with Comparative Example 2 of a driving machine, and can suppress the enlargement of the housing 11. Specifically, in the third embodiment of the driving machine 10, the head cover 14 is miniaturized compared to the third comparative example of the driving machine.

Embodiment 4
Embodiment 4 of the driving machine is shown in FIG.

  An air duster 312 is provided on the head cover 14, and a second operation mechanism 313 is provided on the handle 13. The second operating mechanism 313 is disposed between the trigger valve 21 and the cylinder 25 in the direction of the axis C1. The second operation mechanism 313 is disposed in the arrangement area of the handle 13 in the direction of the axis A1. The second operating mechanism 313 has a first movable element 294, a second movable element 295, a receiving member 297, and a storage chamber 298, as shown in FIG. The storage chamber 298 is a hole provided in the handle 13. The first movable element 294, the second movable element 295 and the receiving member 297 are disposed in the storage chamber 298.

  The first movable element 294 is rotatable relative to the handle 13 about an axis A7. An annular retaining member 276 is attached to the outer peripheral surface of the first movable element 294. The stopper 276 is pressed against the inner surface of the storage chamber 298. Therefore, the first movable element 294 does not move relative to the handle 13 in the direction of the axis A7. Further, in the first movable element 294, a knob 114 is provided at a position located on the outside D1. The knob 114 is rotatable about the axis A7 with the first movable element 294.

  As shown in FIG. 17, the first movable element 294 has an annular inclined surface 299. The inclined surface 299 is inclined with respect to the axis A7. A seal member 204 is provided between the inner surface of the storage chamber 298 and the outer peripheral surface of the first movable element 294. The seal member 204 seals the storage chamber 298 and the outside D1. The first movable element 294 has a shaft 292. The shaft portion 292 is provided about the axis A7. A seal member 217 is attached to the outer peripheral surface of the shaft portion 292.

  The second movable element 295 is movable in the accommodation chamber 298 in the direction of the axis A7 and is provided so as not to rotate. The second movable element 295 has a tubular shape, and the second movable element 295 has an axial hole 205. A seal member 206 is attached to the outer peripheral surface of the second movable element 295. An inclined surface 219 is provided at an end of the second movable element 295 near the first movable element 294. The inclined surface 219 is inclined with respect to the axis A7. A portion of the shaft portion 292 is disposed in the second movable element 295, and the seal member 217 is in contact with the inner circumferential surface of the second movable element 295.

  As shown in FIG. 17, the receiving member 297 has a tubular shape, and the receiving member 297 has an exhaust port 207. The exhaust port 207 connects the shaft hole 205 and the outside D1. The receiving member 297 has an outward facing flange 208. A space 213 is formed in the receiving chamber 298 between the outward flange 208 and the second movable element 295. The biasing member 209 is disposed in the space 213. The outward flange 208 is pressed against the handle 13, and the biasing member 209 biases the second movable element 295 closer to the first movable element 294 in the direction of the axis A7. The biasing member 209 is a metal compression spring as an example.

  The seal members 210 and 211 are attached to the receiving member 297. The seal member 210 can contact the inner surface of the second movable element 295. The seal member 211 contacts the handle 13 to seal the storage chamber 298.

  As shown in FIG. 17, the passage 13 is provided in the handle 13. The passage 112 is connected to the passage 92. A passage 118 is provided in the handle 13. The passage 118 is always connected to the pressure accumulation chamber 17.

  The air duster 312 has a support hole 300, a holder 301 and a shaft member 302 as shown in FIG. The support hole 300 is a recess provided in the head cover 14. The holder 301 has a tubular shape, and the holder 301 is disposed in the support hole 300 and fixed to the head cover 14. The holder 301 has an axial hole 303, and the axial member 302 is disposed in the axial hole 303.

  The shaft member 302 is operable in the direction of the axis A8. Seal members 304, 305, 306 are attached to the outer peripheral surface of the shaft member 302. A passage 307 is provided in the holder 301, and the passage 307 is connected to the exhaust port 102. An inclined surface 308 is provided on a part of the inner surface forming the axial hole 303. The inclined surface 308 is annularly formed around the axis A8. The inclined surface 308 is inclined with respect to the axis A8. A biasing member 309 is provided in the shaft hole 303. The biasing member 309 biases the shaft member 302 toward the outside D1 in the direction of the axis A8. The biasing member 309 is a metal compression spring as an example. A button 310 is attached to a portion of the shaft member 302 disposed on the outside D1.

  An example in which the user operates the air duster 312 with the finger of the hand holding the handle 13 will be described. If the user does not apply the operation force in the direction of the axis A8 to the button 310, the shaft member 302 is stopped at the position where the seal member 305 is pressed against the inclined surface 308 as shown in FIG. . When the shaft member 302 is at rest in the initial position, the seal member 305 shuts off the passage 118 and the passage 307. Therefore, the compressed air of the pressure accumulation chamber 17 is not discharged from the exhaust port 102 to the outside D1.

  When the user applies an operating force in the direction of the axis A8 to the button 310, as shown in FIG. 20, the shaft member 302 is stopped at the operating position actuated in the direction of the axis A8 against the biasing force of the biasing member 309. When the shaft member 302 is stopped in the operating position, the seal member 305 is separated from the inclined surface 308. That is, the passage 118 and the passage 307 are connected, and the compressed air of the pressure accumulation chamber 17 is discharged from the exhaust port 102 to the outside D1.

  When the shaft member 302 is stopped at the initial position as shown in FIG. 19, the user operates the second operation mechanism 313 with the finger of the hand holding the handle 13 to adjust the pressure in the pressure accumulation chamber 17 Explain. The user can switch the setting range of the pressure of the pressure accumulation chamber 17 between the low pressure mode and the high pressure mode by rotating and stopping the knob 114 about the axis A1.

  First, when the user selects the low pressure mode, the position in the rotational direction of the knob 114 is set such that the inclined surface 299 and the inclined surface 219 intersect as shown in FIG. The position in the rotational direction of the knob 114 is a first operation position shown in the upper part of FIG. Then, the second movable element 295 is pushed toward the flange 208 against the biasing force of the biasing member 209, and the second movable element 295 is closest to the flange 208 in the direction of the axis A4, that is, Stop at the first position.

  When the second movable element 95 stops at the first position shown in FIG. 17, the seal member 206 is pressed against the inner surface of the storage chamber 298, and the seal member 206 shuts off the passage 118 and the passage 112. For this reason, the compressed air of the pressure accumulation chamber 17 is not supplied to the air chamber 87, and the pressure of the air chamber 87 is the first regulated pressure.

  The user stops the position of the knob 114 in the rotational direction at the second operation position shown in the lower part of FIG. Then, as shown in FIG. 18, the inclined surface 299 and the inclined surface 219 become parallel, and the inclined surface 299 and the inclined surface 219 come in contact with each other. Then, the second movable element 295 is stopped at the position farthest from the flange 208, that is, at the second position, by the biasing force of the biasing member 209.

  When the second movable element 295 stops at the second position, the seal member 206 separates from the inner surface of the storage chamber 298 and the passage 118 and the passage 112 are connected. For this reason, the compressed air of the pressure accumulation chamber 17 is supplied to the air chamber 87 via the space 213, the passage 112 and the passage 92. The pressure of the air chamber 87 is the second pressure control. The second pressure regulation is higher than the first pressure regulation.

  When the second movable element 295 is stopped at the second position shown in FIG. 18, the seal member 210 contacts the inner peripheral surface of the second movable element 295 to form a seal surface. The seal member 210 shuts off the shaft hole 205 and the exhaust port 207. Therefore, compressed air passing through the space 213 can be prevented from being discharged from the exhaust port 207 to the outside D1.

  According to the driving machine 10 of the fourth embodiment, the user can operate the button 310 and the knob 114 with the finger of the hand holding the handle 13. Therefore, operability is improved. In addition, the second operation mechanism 313 is disposed in the disposition area of the handle 13 in the direction of the axis A1. Therefore, it is possible to suppress that a part of the handle 13 protrudes in the radial direction, that is, in the direction of the axis A1, or upsizing.

  The comparative example 4 of a driving machine is shown by a dashed-two dotted line in FIG. The comparative example 4 of the driving machine has a handle 400, a pressure adjusting mechanism 401, a second operation mechanism 402 for switching the state of the pressure adjusting mechanism 401, and a plug 403. The plug 403 is provided at the end of the handle 400 in the direction of the axis C1. Further, the pressure adjustment mechanism 401 and the pressure adjustment mechanism 401 are arranged side by side in a direction intersecting the axis C1.

  In the first embodiment of the driving machine 10, a pressure control valve 71 is provided on the handle 13, and an air duster 72 is provided on the head cover 14. For this reason, the handle 13 of the fourth embodiment of the driving machine 10 can be miniaturized relative to the handle 400 of the fourth comparative example of the driving machine in the direction intersecting with the axis C1.

  An example of the correspondence between the matters described in the embodiment and the matters described in the claims will be described. The pressure accumulation chamber 17 is an example of a pressure accumulation chamber, and air is an example of a compressed gas. The striking unit 70 is an example of a striking unit. The cylinder upper chamber 38 is an example of a pressure chamber, and the trigger 19 and the trigger valve 21 are an example of a first operation mechanism. The pressure control valve 71 is an example of a pressure control mechanism. The air duster 72 is an example of the second operating mechanism and an example of the third operating mechanism. The second operating mechanism 313 is an example of a second operating mechanism, and the air duster 312 is an example of a third operating mechanism. The driving machine 10 is an example of a driving machine. The housing 11 is an example of a housing, and the cylinder case 12 is an example of a main body. The handle 13 is an example of a handle. The connection site between the handle 13 and the cylinder case 12 may be the handle 13, the cylinder case 12, or both of the handle 13 and the cylinder case 12. The passage 30A is an example of a path for supplying compressed gas to the pressure chamber. The axis A1 is an example of a first axis, and the axis C1 is an example of a second axis. The head cover 14 is an example of a cover.

  The driving machine is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. For example, as the compressed gas, it is possible to use an inert gas or a noble gas instead of air. The first operation mechanism includes a first operation member operated by a user and a valve operated by operation of the first operation member. The first operating member may be any of a lever, an arm, and a button. The second operating mechanism includes a second operating member operated by the user and a valve operated by the operation of the second operating member. The second operating member may be any of a knob, a lever, and a button arm. The third operating mechanism includes a third operating member operated by the user and a valve operated by the operation of the third operating member. The third operating member may be any of a knob, a lever, and a button arm. The path for supplying the compressed gas to the pressure chamber may be any of a port, a passage, an opening, and a space.

  Further, in the arrangement position of the striking portion and the handle, the first axis and the second axis intersect at 90 degrees, and the first axis and the second axis intersect at an angle different from 90 degrees. Good. The magazine may be either a linear arrangement of a plurality of nails, or a spiral arrangement of a plurality of nails.

  DESCRIPTION OF SYMBOLS 10 ... driving machine, 11 ... housing, 12 ... cylinder case, 13 ... handle, 14 ... head cover, 17 ... pressure storage chamber, 19 ... trigger, 21 ... trigger valve, 30 A ... passage, 38 ... cylinder upper chamber, 70 ... striking Part 71: pressure adjusting mechanism 72: 312 air duster 313: second operating mechanism A1, C1: axial line

Claims (11)

A pressure chamber supplied with compressed gas from the pressure storage chamber and operating the striking portion;
A first operation mechanism which is operated by a user and which connects and shuts off a path for supplying the compressed gas of the pressure accumulation chamber to the pressure chamber;
A pressure adjustment mechanism capable of adjusting the pressure of the compressed gas in the pressure accumulation chamber;
A second operation mechanism operated by the user and operating the pressure adjustment mechanism;
A third operation mechanism that is operated by the user and switches between a state in which the compressed gas is stored in the pressure accumulation chamber and a state in which the compressed gas is discharged from the pressure accumulation chamber;
A housing having the pressure accumulation chamber and the striking portion;
A driving machine equipped with
The housing is
A body operatively supporting the striking portion;
A handle that protrudes from the body and is gripped by the user with the hand;
Have
The first operation mechanism is provided at a connection portion between the handle and the main body,
The pressure adjustment mechanism is provided at an end of the handle opposite to the main body,
The driving machine in which the second operating mechanism and the third operating mechanism are integrally provided. A pressure chamber supplied with compressed gas from the pressure storage chamber and operating the striking portion;
A first operation mechanism which is operated by a user and which connects and shuts off a path for supplying the compressed gas of the pressure accumulation chamber to the pressure chamber;
A pressure adjustment mechanism capable of adjusting the pressure of the compressed gas in the pressure accumulation chamber;
A second operation mechanism operated by the user and operating the pressure adjustment mechanism;
A third operation mechanism that is operated by the user and switches between a state in which the compressed gas is stored in the pressure accumulation chamber and a state in which the compressed gas is discharged from the pressure accumulation chamber;
A housing having the pressure accumulation chamber and the striking portion;
A driving machine equipped with
The housing is
A body operatively supporting the striking portion;
A handle that protrudes from the body and is gripped by the user with the hand;
Have
The first operation mechanism is provided at a connection portion between the handle and the main body,
The pressure adjustment mechanism is provided at an end of the handle opposite to the main body,
The driving machine according to claim 1, wherein the first operation mechanism and the second operation mechanism are disposed at positions which can be operated by a hand holding the handle. The housing further comprises a cover attached to the end of the body,
The striking portion is movable in a first axial direction within the body,
The handle protrudes from the body in a second axial direction intersecting the first axis;
The driving machine according to claim 1, wherein the second operating mechanism and the third operating mechanism are provided on the cover. The striking portion is movable in a first axial direction within the body,
The handle protrudes from the body in a second axial direction intersecting the first axis;
The driving machine according to claim 1, wherein the first operation mechanism and the second operation mechanism are disposed at positions operable by a hand holding the handle.   The driving machine according to claim 4, wherein the first operating mechanism, the second operating mechanism, and the third operating mechanism are disposed at positions which can be operated by the hand holding the handle. The striking portion is movable in a first axial direction within the body,
The handle protrudes from the body in a second axial direction intersecting the first axis;
The second operation mechanism and the third operation mechanism are disposed between the connection point between the handle and the main body, and the end of the handle opposite to the main body in the second axial direction. The driving machine according to claim 1, which is The housing further comprises a cover attached to the end of the body,
The striking portion is movable in a first axial direction within the body,
The handle protrudes from the body in a second axial direction intersecting the first axis;
The driving machine according to claim 2, wherein the third operation mechanism is provided on the cover.   The pressure control mechanism is capable of switching the pressure of the compressed gas in the pressure accumulation chamber to a first pressure and a second pressure higher than the first pressure. The driving machine described in the paragraph.   The integration of the second operating mechanism and the third operating mechanism includes that at least one of the parts of the second operating mechanism and at least one of the parts of the third operating mechanism are common. The driving machine according to any one of Items 1, 3, 4, 5, and 6.   The driving machine according to claim 3, wherein the handle is disposed between the first operating mechanism and the third operating mechanism in the first axial direction.   The driving machine according to claim 5 or 6, wherein the second operating mechanism and the third operating mechanism are disposed in the disposition area of the handle in the first axial direction.

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