TWM522812U - Easy to control pneumatic tool - Google Patents

Description

Easy to handle pneumatic tools

The present invention relates to a tool, and more particularly to a pneumatic tool.

Referring to Figure 1, the pneumatic tool 1 has become a necessary tool for many workplaces because it can convert high-pressure gas power into mechanical force for easily driving workpieces, such as locking or loosening bolts. The pneumatic tool 1 generally includes an output shaft 11 for outputting power, an impact mechanism (not shown) mounted in the outer casing 12 and coupled to the output shaft 11, and a high-pressure gas to be delivered thereto. a gas control mechanism 13 of the impact mechanism, the cylinder chamber of the impact mechanism has a first air inlet and a second air inlet, and the high pressure gas can be switched to the first air inlet or the second through the control air control mechanism 13 In the manner of the port, the impact mechanism is driven to generate a mechanical force that drives the output shaft 11 to pivot counterclockwise or clockwise. The gas control mechanism 13 has a gas control rod 131 exposed on the surface of the outer casing 12, although the gas control rod 131 is operative to switch the high pressure gas into the first air inlet and the second air inlet, but During the use of the pneumatic tool, when the user wants to switch the power direction, the air intake switch 132 of the pneumatic tool 1 is first released, and then the air control lever 131 is pulled by another hand, except for the inconvenient one-hand operation. It also causes work delays.

Therefore, the object of the present invention is to provide a pneumatic tool that is easy to handle with one hand.

Thus, the novel easy-to-operate pneumatic tool includes an outer casing defining an accommodation space therein, an impact mechanism mounted in the accommodation space, and a gas control mechanism mounted to the outer casing. The impact mechanism includes a cylinder block having a first air inlet port and a second air inlet port spaced apart from each other. The gas control mechanism includes a gas control column, an elastic member, and a gas control valve seat. The gas control column is inserted into the outer casing and extends into the accommodating space, and is opposite to the outer casing at a first gas supply position that can be pressed and pressed, and a second gas supply position radially retracted into the outer casing. Change between. The elastic member is fixedly mounted between the outer casing and the air control column by elastically resetting the air column to the first air supply position. The air control valve seat is axially mounted in the accommodating space and coupled to the air control column, and defines an inner connecting port with the first air inlet and the second air inlet. The air passage may be driven by the air control column whose displacement is changed between the first air supply position and the second air supply position, and pivotally switch between the first air inlet and the second air inlet. .

The utility model has the advantages that the control valve seat of the gas control mechanism and the transmission structure design of the gas control column make the pneumatic tool of the present invention convenient to be held by one hand, and convenient to switch the power direction with one hand. , is a very convenient and practical and innovative design.

Referring to Figures 2, 3 and 4, an embodiment of the presently versatile pneumatic tool includes a housing 3, an impact mechanism 4 mounted in the housing 3, a cartridge exposed to the front end of the housing 3, and the impact mechanism 4 A transmission-connected output shaft 5, and a gas control mechanism 6 mounted in the outer casing 3 and coupled to the impact mechanism 4. For convenience of explanation, in the following description, the direction indicated by the output shaft 5 shown in FIG. 2 is defined as the front side, and the left and right sides of the pneumatic tool are defined accordingly.

2, 4, and 5, the housing 3 defines an accommodating space 30 for the impact mechanism 4 and the air control mechanism 6, and is provided in the accommodating space 30 for the air control mechanism 6 The limit wall structure 33 of the mounting limit has a top surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface. The receiving space 30 and the fixing hole 32 perpendicular to the insertion hole 31.

The impact mechanism 4 includes a cylinder block 41, a rotor (not shown) mounted in the cylinder block 41, and an impact unit (not shown) attached to the front end of the cylinder block 41 and coupled to the rotor. The impact unit is operatively coupled to the output shaft 5. The cylinder block 41 has a first air inlet 411 and a second air inlet 412 which are exposed on the rear end surface and spaced around the axial center thereof, and can be poured into the first air inlet 411 and the second air inlet 412. The high pressure gas drives the rotor to rotate in different directions, thereby driving the impact unit to generate mechanical forces in different directions. Since the impact mechanism 4 can be driven by high pressure gas, it is a well-known technique to drive the output shaft 5 to rotate forward or reverse the output power, and it is not a modification of the present invention, and therefore will not be described in detail.

The air control mechanism 6 includes a gas control valve seat 61 axially mounted in the accommodating space 30 against the rear end of the cylinder block 41, and a cartridge inserted into the insertion hole 31 and extending downward into the accommodating valve seat 31. The air control column 62 of the space 30, an elastic member 63 installed between the air control column 62 and the outer casing 3, and a positioning pin 64 inserted and fixed in the fixing hole 32 and inserted into the air control column 62 And an air inlet switch 65 attached to the rear end portion of the outer casing 3 and connected to the air control valve seat 61.

The rear end of the air inlet switch 65 can be mounted and coupled to a gas pressure source (not shown), and has a switch pressing piece 651 which is exposed on the side of the outer casing 3 and can be pressed, and can be pressed when the switch pressing piece 651 is pressed. The high pressure gas from the air pressure source is introduced into the gas control valve seat 61. Since the air intake switch 65 is a conventional member and is not an improvement point of the present invention, it will not be described in detail.

The air control valve seat 61 is pivotally mounted in the accommodating space 30 axially relative to the outer casing 3, and rotatably abuts against the rear end of the cylinder block 41, and defines a front and rear through and can The high-pressure gas introduced into the air inlet switch 65 is injected into the air passage 611 of the cylinder block 41. The air passage 611 has an eccentricity disposed on the front end surface of the air control valve seat 61, and is used for the first air inlet 411 and the first air inlet 411. The gas inlet port 612 is connected to the gas inlet port 612, and the gas control valve seat 61 is driven by the gas control column 62, and pivots between the first gas inlet port 411 and the second gas inlet port 412. Switch.

The control valve seat 61 has a linking section 613 extending axially forward and backward and connected to the intake switch 65, and a radial expansion from the front end of the linking section 613 and abutting against the rear end of the cylinder block 41. The air control section 616 is eccentrically disposed on the front end surface of the air control section 616. The interlocking section 613 has a linking structure 614 disposed on an outer peripheral surface thereof and coupled to the air control column 62. The interlocking structure 614 has a plurality of strip-shaped interlocking teeth 615 extending axially forward and backward and spaced around the axial center thereof. .

The air control column 62 is pivotally inserted into the insertion hole 31 and is axially perpendicular to the control valve seat 61 to the side of the control valve seat 61, and is opposite to the outer casing 3 a displacement change between a first air supply position that can be pressed down, and a second air supply position that is retracted into the insertion hole 31, and can synchronously drive the control valve seat 61 to switch to the first The air inlet 411 communicates with the second air inlet 412. The elastic member 63 is a spring. The elastic top support is mounted between the bottom end of the air control column 62 and the outer casing 3, and the air control column 62 can be elastically moved to the first air supply position.

The air control column 62 has a transmission shaft portion 621 that can be driven to be pivotally and axially displaced downwardly into the insertion hole 31, and a radially outwardly coupled connection to the top end of the transmission shaft portion 621 and exposed to The head portion 626 is pressed outside the insertion hole 31. The outer surface of the transmission shaft portion 621 is provided with a transmission structure 622 coupled to the linkage structure 614, a limiting guide groove 624 extending up and down along the axial direction thereof, and a horizontally extending horizontally extending communication guide band along the circumference thereof. A positioning slot 625 at the top of the slot 624. The transmission structure 622 has a plurality of transmission teeth 623 axially spaced along the transmission shaft portion 621 and extending along the circumference of the transmission shaft portion 621, and the card is engaged by the transmission teeth 623. Card teeth 615. The top surface of the pressing head 626 is concavely provided with an abutting slope 627 extending to the periphery thereof, and the pressing inclined surface 627 can be driven by the finger 901 (shown in FIG. 3) to be driven by the pushing, and the driving shaft portion is synchronously linked. 621 pivots.

The positioning pin 64 is insertably fixed to the limiting guiding slot 624 along the limiting guiding slot 624, so that the air control column 62 cannot be driven to rotate at the first air supply position and the first The upper and lower displacement limits between the two gas supply positions. In addition, when the air control column 62 is operated to move down to the second air supply position, the positioning pin 64 is located opposite to the positioning slot 625. At this time, the air control column 62 can be further driven relative to the positioning. The pin 64 pivots, and the positioning pin 625 is used to position the positioning pin 64 relative to the embedded position, thereby being positioned at the second air supply position.

Referring to Figures 3, 5 and 6, when the pneumatic tool of the present invention is used, the user can hold the hand 900 to the outer casing 3 and press the switch pressing piece 651 to inject the high-pressure gas of the connected high-pressure gas source. The control valve seat 61 is inserted. When the gas control column 62 is located at the first gas supply position, the gas control valve seat 61 is connected to the first gas inlet port 411, and the guided high pressure gas drives the impact mechanism 4 to drive the output shaft 5 to a specific The direction is rotated. When the output shaft 5 is to be reversed, the air control column 62 can be pressed by the finger 901 to drive the air control column 62 to be retracted to the second air supply position. At this time, the air control column 62 drives the air control valve. The valve seat 61 is synchronously pivotally changed to communicate with the second air inlet 412, and the impact mechanism 4 can be driven to drive the output shaft 5 to reverse.

Referring to FIG. 7 , when the output shaft 5 needs to be maintained in the reverse state for a long time, the finger 901 pressing the abutting ramp 627 can be pushed to drive the pressing head 626 to pivot about its axis, so that the positioning pin is rotated. The relative displacement of the 64 is embedded in the positioning groove 625 of the transmission shaft portion 621, so that the air control column 62 can be positioned in the second air supply position without axial displacement. When the running direction of the output shaft 5 is to be switched again, the pressing head 626 is only required to be reversely driven by the finger 901, and the positioning pin 64 is disengaged from the positioning slot 625 and moved into the limiting guiding slot 624 to be utilized. The returning elastic force of the elastic member 63 resets the air column 62 to the first air supply position by elastically, and completes the direction switching.

In summary, the control valve seat 61 of the gas control mechanism 6, the control air column 62 and the transmission structure 622 of the positioning pin 64 are designed to make the pneumatic tool of the present invention convenient to be held by one hand. It is a convenient, practical and innovative design to facilitate the switching of the power direction with one hand. Therefore, it is indeed possible to achieve the purpose of the present invention.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

3‧‧‧ Shell
30‧‧‧ accommodating space
31‧‧‧Packing holes
32‧‧‧Fixed holes
33‧‧‧Limited wall structure
4‧‧‧ Impact mechanism
41‧‧‧Cylinder seat
411‧‧‧ first air inlet
412‧‧‧second air inlet
5‧‧‧ Output shaft
6‧‧‧Gas control mechanism
61‧‧‧Control valve seat
611‧‧‧Airway
612‧‧‧ control port
613‧‧‧ linkage section
614‧‧‧ linkage structure
615‧‧‧ linkage teeth
616‧‧‧Control section
62‧‧‧ gas column
621‧‧‧Drive shaft
622‧‧‧ Transmission structure
623‧‧‧Drive teeth
624‧‧‧limit guide
625‧‧‧ positioning slot
626‧‧‧Press the head
627‧‧‧Resist the slope
63‧‧‧Flexible parts
64‧‧‧Locating pins
65‧‧‧Intake switch
651‧‧‧Switching tablets
900‧‧‧Hands
901‧‧‧ fingers

Other features and advantages of the present invention will be apparent from the description of the drawings, wherein: Figure 1 is a perspective view of a conventional pneumatic tool; Figure 2 is a perspective view of one embodiment of the presently operatively operable pneumatic tool Figure 3 is a side elevational view of the embodiment, schematically illustrating the state in which it is held in use; Figure 4 is an exploded perspective view of the embodiment; Figure 5 is a partial cross-sectional view of the embodiment showing a gas column located in a Figure 6 is a view similar to Figure 5, illustrating the case where the gas column is in a second gas supply position; and Figure 7 is a view similar to Figure 6 illustrating the gas column inlay The case when the card is positioned at the second air supply position by a positioning pin.

3‧‧‧ Shell

31‧‧‧Packing holes

32‧‧‧Fixed holes

4‧‧‧ Impact mechanism

41‧‧‧Cylinder seat

411‧‧‧ first air inlet

412‧‧‧second air inlet

5‧‧‧ Output shaft

615‧‧‧ linkage teeth

616‧‧‧Control section

62‧‧‧ gas column

621‧‧‧Drive shaft

622‧‧‧ Transmission structure

623‧‧‧Drive teeth

624‧‧‧limit guide

625‧‧‧ positioning slot

6‧‧‧Gas control mechanism

61‧‧‧Control valve seat

611‧‧‧Airway

612‧‧‧ control port

613‧‧‧ linkage section

614‧‧‧ linkage structure

626‧‧‧Press the head

627‧‧‧Resist the slope

63‧‧‧Flexible parts

64‧‧‧Locating pins

65‧‧‧Intake switch

651‧‧‧Switching tablets

Claims (6)

An easy-to-operate pneumatic tool comprising: a housing defining an accommodation space therein; an impact mechanism mounted in the housing space, including a cylinder block having a first air inlet spaced apart from a second air inlet; and a gas control mechanism, comprising: a gas control column inserted into the outer casing and extending into the accommodating space, and being opposite to the outer casing at a first gas supply position capable of being pressed and pressed And a change between the second air supply position and the second air supply position, wherein an elastic member is fixedly mounted between the outer casing and the air control column, and the air control column is elastically displaced to the first air supply position, and a gas control valve seat can be axially mounted in the accommodating space and coupled to the gas control column, and defines an inner connecting port with the first air inlet and the second air inlet The air passage may be driven by the air control column whose displacement is changed between the first air supply position and the second air supply position, and pivotally switch between the first air inlet and the second air inlet. . An easy-to-manipulate pneumatic tool according to claim 1, wherein the air control column is inserted into the outer casing axially perpendicular to the outer casing, and has a transmission shaft portion extending into the accommodating space, the transmission shaft The outer surface is provided with a transmission structure extending along the axial direction thereof, and the outer surface of the control valve seat is provided with a linkage structure extending around its axis and engaging with the transmission structure. The easy-to-manipulate pneumatic tool of claim 2, wherein the transmission structure of the transmission shaft portion has a plurality of axially spaced transmission gear teeth, and the linkage structure of the control valve seat has a plurality of axes around the shaft The interlocking teeth are arranged to be engaged with each other and the engaging teeth of the driving teeth are engaged with each other. The easy-to-manipulate pneumatic tool of claim 3, wherein the air control mechanism further includes a positioning pin that is perpendicular to the air control column and extends into the housing space, and the linkage structure The interlocking teeth are spaced along their axial direction and spaced around their axes. The air column is pivotally inserted around the axis of the housing, and the drive teeth of the transmission structure are around its axis. The core extends axially spaced apart and is pivotally snapped relative to the control valve seat to the interlocking latches, and the control air column located at the second air supply position is pivotally engaged The locating pin is detachably positioned at the second air supply position. An easy-to-manipulate pneumatic tool according to claim 4, wherein the outer surface of the transmission shaft portion is recessed with an axially extending limit guide groove, and one of the top end of the limit guide groove is laterally extended along the circumference thereof. a positioning slot, wherein the positioning pin is relatively displaceable and the insertion limit is located in the limiting guide groove, so that the air control column is not pivotally movable relative to the second air supply position and the second air supply position The gas column in the second gas supply position is driven to be pivoted relative to the positioning pin, and the positioning pin is positioned to be positioned relative to the card and positioned at the second gas supply position. The easy-to-manipulate pneumatic tool of claim 4 or 5, wherein the air control column further has a pressing head that is radially outwardly fixed to the top end of the transmission shaft and exposed outside the outer casing, and The top surface of the pressing head is concavely provided with an abutting slope extending toward the periphery thereof.