TWI584921B - Pneumatic tools for steering and transposition use - Google Patents

Description

Steering switch and transposition device for pneumatic tools

The invention relates to a steering switching and transposition using device for a pneumatic tool, in particular to a steering direction of a steering switch and a transposition device which can be conveniently and safely adjusted according to a user's dominant hand.

According to the TC invention patent No. I266679, the forward reversing valve of the existing pneumatic tool is provided with a positive reversing valve, a switching valve stem, and a gripping device. a speed control button, a trigger link, a trigger and an elastic component, the positive reverse valve is rotatably disposed on the intake flow path of the pneumatic tool, the positive reverse valve is provided with a consistent perforation groove at the center and is disposed at the inner end a gas perforation, the outer end of the positive reversing valve extends outside the grip and is provided with a valve stem positioning portion, the switching valve stem includes an assembly portion and a dial control portion, and the assembly portion is coupled to the outside of the positive reversing valve The assembly portion is provided with a combined positioning portion positioned in combination with the valve stem positioning portion, the dial portion extending toward a side of the gripper, the trigger link passing through the through hole slot of the positive reverse valve, and The inner end is provided with a limit stop that can block the inner end of the positive reversing valve, so that the trigger link can not continuously slide outward, and the outer end of the trigger link protrudes outwardly with a trigger unit end, the trigger and the trigger The trigger link of the trigger link is combined, and the speed control knob can be rotated. And axially sliding groove combined with the through hole of the valve is reversed, the resilient member is provided between the control element and the trigger.

When the user with the right hand is the dominant hand holds the grip, the dial of the switching valve stem can be toggled through the right thumb, so that the pneumatic tool can be rotated forward (clockwise) via the positive reversing valve or Reverse (counterclockwise rotation) operation, while the left hand is a dominant user wants to use the existing pneumatics In time, the speed regulating disc valve is first moved toward the trigger to compress the elastic element, so that there is a space for relative movement between the switching valve stem and the positive reverse valve, so that the combined positioning of the switching valve stem The portion is separated from the valve stem positioning step of the positive reversing valve, so that the switching valve stem can be rotated relative to the positive reversing valve, so that the dialing portion of the switching valve stem rotates from the gripper with the switching valve stem One side moves to the other side, so that the left hand is a user with a dominant hand, and the dial can be conveniently moved by the thumb of the left hand to perform a forward/reverse operation on the pneumatic tool.

However, when the existing pneumatic tool is used, it can be adjusted to the user who makes the left and right hands as the dominant hand through the position-shifting steering switching and transposition using device, so that the user can dial when holding the grip with one hand. The valve stem is dynamically switched to perform the reverse rotation control, but the positive reversing valve of the prior pneumatic tool is used for the positional steering switching and the transposition using device, and the elastic member is pushed through the speed control button to push the switching valve stem to give way The combination positioning portion and the valve stem positioning portion between the switching valve stem and the positive reversing valve are set in position, and the force of the card setting position is obviously insufficient, so that the user only wants to switch the positive reversing direction of the pneumatic tool. When the thrust of the thumb is greater than the elastic force of the elastic member, the switching valve stem is separated from the positive reverse valve, and the switching valve stem is rotated to the other side of the grip, which not only causes The inconvenience in use and the change in steering have an effect on safety, and it is easy to cause loss for each member after long-term use due to poor positioning effect; further, when the cutting is performed When the valve stem is damaged after a long time of use and needs to be replaced, since the assembly part of the switching valve stem is a closed annular structure, the trigger, the elastic component and the adjustment are first removed when the switching valve stem is replaced. After the speed button is pressed, the switching valve stem can be removed from the positive reversing valve for replacement, and the time and cost required for maintenance and replacement are relatively increased. In summary, the forward reversing valve of the existing pneumatic tool is switched and switched. The transposition device has been improved.

In order to improve the forward and reverse valve of the existing pneumatic tool, the positional steering switching and the transposition use device are located in use, and are easily lost and insufficient due to poor positioning. The object of the present invention is to provide a pneumatic device that can be conveniently and safely adjusted. The steering of the tool is switched and the device is used for transposition.

Based on the above object, the technical means used in the present invention is to provide a steering switching and transposition using device for a pneumatic tool, which comprises a switching group, a speed regulating group and a trigger unit, wherein: the switching group is provided with a positive a reversing valve and a switching valve stem, the positive reversing valve is a hollow cylinder, the positive reversing valve is provided with a valve hole through an outer surface adjacent to the rear end, and the positive reversing valve is axially disposed on an outer side surface of the front end a latching seat is disposed, the switching valve stem is detachably coupled with the positive reverse valve and is provided with a latching claw and a dialing handle, and the latching claw is coupled with the latching seat and has a gap a latching groove that communicates with the notch is recessed on an outer side surface of the card pawl away from the positive reversing valve, the latching groove and the notch form an annular structure, and the dialing handle is convexly formed away from The outer surface of the notch of the notch; the speed regulation group is combined with the switching group and provided with a rotating and axial sliding speed control knob, the speed control button is provided with a set of tubes and a rotating disc, the sleeve The tube extends into the positive reversing valve via the cassette seat, the sleeve tube The outer end is disposed on the front side of the latching claw through the latching seat, and the rotating disc is combined with the outer surface of the outer end of the sleeved tube to be located on the front side of the latching claw, and the rotating disc is disposed at the card facing the latching claw a clamping rim surrounding the outer circumference of the sleeve and engaging with the latching groove and the notch of the clamping jaw, the rotating disk and the card holder and the card are axially protruded And the trigger unit is combined with the switch group and the speed control group and is provided with a trigger link, a trigger and an elastic component, and the front end of the trigger link passes through the positive reverse valve and the sleeve a tube extending to a front side of the rotating disk, the trigger being coupled to the front end of the trigger link and located at a front side of the speed control knob, and having a spacing between the trigger and the rotating disk of the speed control button The elastic component is sleeved on the outer end of the trigger link extending from the speed control knob and abuts against the rotating disk and the trigger, so that the rotating disk is pushed by the elastic component Abutting the pawl of the card, the snap ring edge of the rotating disk is located between the latching groove and the notch of the latching claw and maintaining the spacing.

Further, the card holder is a polygonal hollow body, and the card holder is concavely provided with a plurality of latching concave surfaces on the outer surface, and the latching claw forms two respectively on the inner surface facing the positive reverse valve and the card The two sides of the cymbal are combined with the concave surface of the card.

Further, the positive reversing valve is provided with a speed-adjusting positioning structure adjacent to the outer surface of the cassette seat, the speed-adjusting positioning structure is provided with a receiving convex portion and a positioning bead, and the receiving convex portion is radially protruded from the Positively reversing the outer surface of the valve and communicating with the interior of the positive reversing valve, the positioning bead is disposed in the accommodating protrusion and partially extending from the inner surface of the positive reversing valve, and the sleeve tube extends into the positive reversing valve The outer surface of the outer surface is axially recessed with at least two spaced apart bead slots, so that the positioning bead of the speed regulating positioning structure is located in one of the bead slots and is engaged with the sleeve tube, wherein each axially disposed bead groove can Further, the sleeve tube is axially slid forward and backward with respect to the forward rotation valve along the direction of the bead groove.

Preferably, the latching claw of the switching valve stem further protrudes from the two free end edges with a card abutting edge, so that the two card abutting edges simultaneously abut against one of the latching concave surfaces of the latching seat, further providing The structural strength of the card allows the switching valve stem to be firmly coupled with the positive reversing valve.

Preferably, the rotating disk is provided with a plurality of numerical symbols corresponding to the rotational speed on the outer side of the rotating ring, and the rotating disk is provided with a plurality of convex ribs on the outer surface, so that the user can easily The rotation of the rotating disk is performed.

Preferably, the rotating disk has a receiving groove surrounding the outer end of the sleeve, and the elastic member is sleeved on the trigger link. The outer end is located in the receiving slot.

Preferably, the trigger is coupled through a latch that engages the front end of the trigger link.

By the above technical means, the steering switching and transposition using device of the pneumatic tool of the present invention has at least the following effects and advantages:

1. Steering switching: When the user wants to perform a forward or reverse steering operation on the pneumatic tool, the driving direction of the pneumatic tool can be easily replaced by simply pulling the toggle handle through the thumb (forward rotation) Or reversing), it is quite convenient and easy to use, and in the process of switching, except that the elastic element located between the trigger and the speed control button provides a pushing against the speed control button and the card claw The force of the base is simultaneously coupled with the notch of the clamping jaw and the locking groove through the locking rim of the rotating disk, so that even when the pulling power of the thumb of the user is greater than the elastic force of the elastic component, The locking collar and the rotation button can be prevented from falling off or separated during the process of switching the rotation direction by the combination of the locking rim of the rotating disk and the notch of the clamping jaw and the locking groove. In this case, the switching valve stem is not moved to the other side of the grip, so that the steering can be switched conveniently and safely, and the accurate loss of the loss of each component after long-term use can be effectively avoided.

Second, the use of transposition: when it is intended to be used for transposition, it first moves the rotational speed knob along the axial direction of the trigger link toward the trigger and compresses the elastic element, so that the locking ring of the rotating disc is The latching groove of the latching pawl is separated, wherein the latching pawl can directly reversing the valve from the latching seat due to the notch of the latching pawl, and the latching pawl and the latching seat are further The concave surface of the cassette is located on the other side of the grip, and after the rotation speed button is released, the card rim of the rotating disc and the card of the claw can be transmitted through the compressed elastic member. The combination of the tongue and groove phase card enables the user of different dominant hands to control the direction of rotation of the pneumatic tool by pulling the toggle handle of the switching valve stem through the thumb, which is quite convenient and fast in transposition use. .

3. Speed adjustment: When the user adjusts the rotation speed of the pneumatic tool by rotating the rotary disk, the positioning bead of the speed regulation positioning structure and the bead groove of the sleeve tube can not only provide the user. A certain amount of rotation effect, and can avoid the situation of excessive rotation of the speed control knob.

4. Maintenance and replacement: When the switching valve stem is damaged after long-term use and needs to be replaced, since the locking claw of the switching valve stem is a U-shaped structure with a gap, it is not replaced when the switching valve stem is replaced. After the trigger, the elastic component and the speed control knob need to be disassembled, the switching valve stem can be conveniently removed from the cartridge of the positive reversing valve for replacement, thereby reducing the time and cost required for maintenance and replacement.

10‧‧‧ Forward reversing valve

11‧‧‧ valve hole

12‧‧‧Card

121‧‧‧掣 concave

13‧‧‧Speed positioning structure

131‧‧‧ accommodating convex parts

132‧‧‧ positioning beads

14‧‧‧Locating pin slot

20, 20'‧‧‧Switching stem

21, 21’‧‧‧Card claws

210‧‧‧ gap

211‧‧‧Car face

212‧‧‧ card slot

213’‧‧‧ card

22‧‧‧Drive handle

30‧‧‧Speed knob

31‧‧‧Setting

311‧‧ ‧ beads

32‧‧‧ rotating disk

321‧‧‧ card rim

322‧‧‧Digital label

323‧‧‧ ribs

324‧‧‧ 容 槽

40‧‧‧ trigger linkage

50‧‧‧ trigger

51‧‧‧ fixing bolt

60‧‧‧Flexible components

80‧‧‧ pneumatic tools

81‧‧‧ grip

82‧‧‧ gun body

83‧‧‧Airflow guidance group

1 is an external perspective view of a steering switching and indexing device of the present invention disposed on a pneumatic tool.

2 is a partially enlarged cross-sectional side view showing the steering switching and indexing device of the present invention disposed on a pneumatic tool.

3 is an external perspective view of the steering switching and indexing device of the present invention separated from the pneumatic tool.

Figure 4 is a cross-sectional side view of the steering switching and indexing device of the present invention.

Figure 5 is an exploded perspective view of the steering switching and indexing device of the present invention.

Figure 6 is another perspective exploded view of the steering switching and transposition using device of the present invention.

Figure 7 is a partially enlarged cross-sectional side view of the steering switching and indexing device of the present invention.

Figure 8 is a partially enlarged cross-sectional side view of the steering switching and indexing device of the present invention.

Fig. 9 is a schematic view showing the operation of the steering switching and transposition using device in the forward and reverse direction of the present invention.

Fig. 10 is a schematic view showing the operation of the steering switching and transposition using device for transposition use according to the present invention.

Figure 11 is a partial perspective view showing another preferred embodiment of the steering switching and indexing device of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the present invention will be further described in detail as shown in the accompanying drawings (the right hand is used as the right hand). The steering switching and transposition using device of the pneumatic tool is disposed between the grip 81 and the gun body 82 of a pneumatic tool 80 as shown in FIG. 1 and is transmitted through a positioning pin 811 as shown in FIGS. 2 and 3. The air tool 80 is fixed to the air tool 80. Further, the air tool 80 is provided with an air flow guiding group 83 between the grip 81 and the gun body 82, and a gas guiding group 83 is disposed in the gun body 82. Connected cylinder groups (not shown), wherein the positive reversing flow path configuration and operating principle of the pneumatic tool 80 belong to the prior art in the technical field, and are not the main technical features of the present invention, and therefore, are not It is to be noted that the steering switching and transposition using device of the present invention is provided with a switching group, a speed regulating group and a trigger unit, wherein: please refer to FIGS. 4 to 6 for further matching with the grip of the pneumatic tool 80. Combine 81 and locate the gun body 82 In the lower part, the switching group is provided with a positive reversing valve 10 and a switching valve stem 20, wherein the positive reversing valve 10 is disposed in the grip 81 and communicates with the interior of the gun body 82. The positive reversing valve 10 is a hollow a cylinder body, the positive reversing valve 10 is provided with a valve hole 11 at an outer surface adjacent to the rear end thereof, and the valve hole 11 can communicate with the air flow guiding group 83 of the pneumatic tool 80, so that high pressure gas can pass through the valve hole 11 and the airflow guiding group 83 enter the cylinder group of the gun body 82, thereby causing the pneumatic tool 80 to generate a forward rotation (clockwise rotation) or a reverse rotation (counterclockwise rotation), as shown in FIG. The front end of the reversing valve 10 extends out of the grip 81 and a latching seat 12 is axially protruded on the outer side of the front end. The latching seat 12 is a polygonal hollow body. Further, as shown in FIG. 5 and The cassette seat 12 is shown in Fig. 7 with a plurality of latching concave surfaces 121 recessed on the outer surface.

Preferably, as shown in FIGS. 4, 5 and 8, the forward reversing valve 10 is provided with a speed regulating positioning structure 13 adjacent to the outer surface of the cassette seat 12. The speed regulating positioning structure 13 is provided with a receiving convex portion 131. And a positioning bead 132, the accommodating protrusion 131 is radially protruded from the outer surface of the positive reversing valve 10 and is opposite to the positive reversing valve 10 The positioning bead 132 is disposed in the accommodating protrusion 131 and partially protrudes from the inner surface of the positive reversing valve 10, preferably as shown in FIGS. 2 to 4, the positive reversing valve 10 is adjacent to the The outer surface of the speed regulating positioning structure 13 is recessed with a positioning pin groove 14 so that the positioning pin 811 of the pneumatic tool 80 can fix the positive reverse valve 10 to the grip 81 via the positioning pin groove 14.

The switching valve stem 20 is detachably coupled to the positive reverse valve 10 on one side of the grip 81. The switching valve stem 20 is provided with a latching claw 21 and a dialing handle 22, and the latching pawl 21 is The latching seat 12 of the positive reversing valve 10 is snap-fitted, and the latching claw 21 has a U-shape and has a notch 210. The latching claw 21 faces the inner surface of the positive reversing valve 10 as shown in FIG. As shown in FIG. 7 , two latching faces 211 are respectively formed and engaged with the two latching concave surfaces 121 of the latching seat 12 , and the latching claws 21 are recessed on the outer side surface away from the positive reverse valve 10 . a latching groove 212 communicating with the notch 210, the latching groove 212 and the notch 210 forming an annular structure, and the dialing handle 22 is convexly formed on the outer surface of the latching claw 21 away from the notch 210, thereby The operation of the user to toggle the switching valve stem 20 is provided.

The speed regulation group is disposed under the gun body 82 in combination with the switch group, and the speed regulation group is provided with a rotating and axial sliding speed control knob 30, and the speed control button 30 is provided with a set of tubes 31 and a Rotating the disk 32, wherein the sleeve tube 31 is a hollow tube body and extends into the positive reversing valve 10 via the cassette seat 12, and the sleeve tube 31 extends into the outer surface axis of the positive reversing valve 10. At least two spaced apart bead slots 311 are provided in the recesses, so that the positioning beads 132 of the speed regulating positioning structure 13 can be located in one of the bead slots 311 as shown in FIGS. 4 and 8 to be engaged with the sleeve tube 31. The axially disposed bead groove 311 can further slide the sleeve tube 31 in the axial direction of the forward reversing valve 10 along the direction of the bead groove 311, and the outer end of the sleeve tube 31 The front side of the latching pawl 21 is extended by the latching seat 12.

The rotating disk 32 is disposed on the front side of the latching claw 21 in combination with the outer surface of the outer end of the sleeve tube 31. The rotating disk 32 is axially convexly disposed on the inner side surface of the latching claw 212 facing the latching claw 212. a locking ring 321 surrounding the outer periphery of the sleeve tube 31 and engaging with the latching groove 212 and the notch 210 of the latching claw 21, so that the rotating disc 32 is as shown in FIGS. 2 and 4 12 and the card claw 21 attached Preferably, the rotating disk 32 is provided with a plurality of numerical symbols 322 corresponding to the rotational speed on the outer side of the rotating ring 321 , and the rotating disk 32 is laterally convexly provided with a plurality of ribs 323 on the outer surface. The rotating disk 32 can be easily rotated by the user. Further, as shown in FIGS. 4 and 5, the rotating disk 32 is recessed on the outer side away from the locking ring 321 to surround the outer end of the sleeve 31. The slot 324 is accommodated.

The trigger unit is disposed under the gun body 82 in combination with the switching group and the speed regulating group. The trigger unit is provided with a trigger link 40, a trigger 50 and an elastic member 60. The inner end of the trigger link 40 Located in the grip 81 and a part of the member of the airflow guiding group 83 as shown in FIGS. 2 and 4, the front end of the trigger link 40 passes through the airflow guiding group 83, the positive reversing valve 10, and the sleeve. The tube 31 and the receiving groove 324 are extended to the front side of the rotating plate 32. The trigger 50 is coupled to the front end of the trigger link 40 and located at the front side of the speed control knob 30. Preferably, the trigger is provided. The 50 series is coupled through a fixing bolt 51 coupled to the front end of the trigger link 40, wherein the trigger 50 and the rotating disk 32 of the speed control knob 30 have a spacing as shown in FIGS. 2 and 4. The elastic member 60 is sleeved on the outer end of the trigger link 40 and extends in the receiving groove 324 to abut against the rotating disk 32 and the trigger 50, so that the rotating disk 32 The latching claw 21 is abutted against the latching claw 21 by the pushing of the elastic member 60, so that the latching rim 321 of the rotating disc 32 is located in the latching slot 212 of the latching claw 21 And maintaining the spacing between the notches 210.

Referring to FIG. 1 , the steering switching and transposition using device of the pneumatic tool of the present invention is operated when the user's dominant hand is the right hand and the grip 81 of the pneumatic tool 80 is held. The thumb is located at the dial handle 22 of the switching valve stem 20. When the user wants to perform a forward or reverse steering operation on the pneumatic tool 80, it is only necessary to pull the dial through the thumb as shown in FIG. The manner of moving the handle 22 can conveniently replace the rotation direction (forward rotation or reverse rotation) of the pneumatic tool 80, which is quite convenient and easy to use, and in the process of the toggle switching as shown in FIGS. 2 and 4, except The elastic member 60 located between the trigger 50 and the speed control knob 30 provides a force against the speed control knob 30 and the latching claw 21, and the ring edge 321 is transmitted through the rotating disc 32. The notch 210 of the latching jaw 21 and the latching slot 212 are snap-fitted, so that even when the thumb of the user is greater than the elastic component The elastic force of the 60 can also be coupled with the notch 210 and the latching slot 212 of the latching claw 21 through the snap ring 321 of the rotating disc 32, thereby effectively avoiding switching in the process of switching the rotating direction. The valve stem 20 and the rotational speed knob 30 are detached or separated, and the switching valve stem 20 is not moved to the other side of the grip 81, so that the steering can be switched conveniently and safely, and can be accurately positioned. Effectively avoid the loss of each component after prolonged use.

Furthermore, when the user with the left-handed hand is going to use the pneumatic tool 80 as described above, please refer to the reference 10, at which time, the speed knob 30 is along the axis of the trigger link 40 as shown in FIG. Moving and compressing the elastic member 60 toward the trigger 50 separates the snap ring edge 321 of the rotating disk 32 from the latching groove 212 of the latching pawl 21, wherein the latching claw 21 has a notch 210 The latching pawl 21 can be directly withdrawn from the latching seat 12 to be separated from the positive reverse valve 10, and the latching pawl 21 is engaged with the latching concave surface 121 of the latching seat 12 as shown in FIG. After the other side of the grip 81 is released, and the rotating button 30 is released, the locking rim 321 of the rotating disc 32 and the latching groove of the latching claw 21 can be transmitted through the compressed elastic member 60. The combination of the 212 phase card enables the user with the left hand to control the direction of the rotation of the pneumatic tool 80 by the left hand thumb for the toggle handle 22 of the switching valve stem 20, in the transposition use. Quite convenient and fast.

In addition, as shown in FIG. 4 and FIG. 8 , when the user adjusts the rotation speed of the pneumatic tool 80 by rotating the rotating disk 32 , the positioning beads 132 and the sleeve tube 31 passing through the speed adjusting and positioning structure 13 are respectively The manner in which the bead groove 311 is clamped not only can provide a certain amount of rotation of the user, but also can avoid the situation of excessively rotating the speed control knob 30; in addition, when the switching valve stem 20 is damaged after a long time of use, When the replacement of the valve stem 21 of the valve stem 20 is a U-shaped structure having a notch 210, the trigger 50, the elastic member 60 and the speed control button need not be disassembled when the switching valve stem 20 is replaced. After 30, the switching valve stem 20 can be easily removed from the cassette seat 12 of the positive reversing valve 10 for replacement, thereby reducing the time and cost required for maintenance and replacement.

Further, in conjunction with another preferred embodiment as shown in FIG. 11, the difference from the preferred embodiment shown in FIGS. 1 to 8 is that the latching claw 21' of the switching valve stem 20' is further at the two free ends. A rim flange 213 ′ is respectively protruded from the edge, so that the two card rims 213 ′ simultaneously abut against one of the yoke concave surfaces 121 of the yoke 12 to provide further structural strength of the clamping, so that the switching valve stem 20 is 'It can be firmly coupled with the positive reversing valve 10.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention may be made without departing from the technical scope of the present invention.

20‧‧‧Switching stem

21‧‧‧Card claws

22‧‧‧Drive handle

30‧‧‧Speed knob

322‧‧‧Digital label

323‧‧‧ ribs

50‧‧‧ trigger

80‧‧‧ pneumatic tools

81‧‧‧ grip

82‧‧‧ gun body

Claims (10)

The utility model relates to a steering switching and transposition using device of a pneumatic tool, which is provided with a switching group, a speed regulating group and a trigger unit, wherein: the switching group is provided with a positive reversing valve and a switching valve stem, and the positive reversing valve is a a hollow cylinder, the positive reversing valve is provided with a valve hole through an outer surface adjacent to the rear end, and the positive reversing valve is axially convexly disposed on an outer side surface of the front end, and the switching valve rod is detachably In combination with the positive reversing valve, and provided with a latching claw and a dialing handle, the latching pawl is coupled with the latching seat and has a notch, the latching pawl being away from the outer side of the positive reversing valve The upper recess is provided with a latching groove communicating with the notch, the latching groove and the notch forming an annular structure, and the dialing handle is convexly formed on an outer surface of the latching claw away from the notch; The switching group is combined and provided with a rotating and axially sliding speed regulating button, the speed regulating button is provided with a set of tubes and a rotating disc, and the sleeve tube extends into the positive reversing valve via the cassette seat The outer end of the sleeve is extended by the clamping seat to set the front side of the clamping jaw, the rotation In combination with the outer surface of the outer end of the sleeve tube, located on the front side of the latching claw, the rotating disc is axially convexly disposed on the inner side surface of the latching groove facing the latching claw, and surrounds the outer circumference of the sleeve tube and a card rim of the card 掣 之 及 及 及 及 及 及 及 , , , , , , , , , , , 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合 结合Combined with a trigger link, a trigger and an elastic component, the front end of the trigger link is extended to the front side of the rotating disk via the positive reversing valve and the sleeve, the trigger and the front end of the trigger link Combinedly located on the front side of the speed control button, and having a spacing between the trigger and the rotating disk of the speed control button, and the elastic element is sleeved on the outer end of the trigger link extending from the speed control button and Abutting against the rotating disk and the triggering device, the rotating disk is abutted against the clamping claw via the elastic component, so that the locking rim of the rotating disk is located in the locking groove of the clamping jaw And keep the spacing between the gaps. The steering switch and the position changing device of the pneumatic tool according to claim 1, wherein the card holder is a polygonal hollow body, and the card holder is concavely provided with a plurality of concave surfaces on the outer surface, and The latching jaws form, on the inner surface of the positive reversing valve, two latching faces that are respectively engaged with the two latching concave surfaces of the latching seat. The steering switching and transposition using device of the pneumatic tool of claim 2, wherein the positive reversing valve is provided with a speed regulating positioning structure adjacent to the outer surface of the clamping seat, and the speed regulating positioning structure is provided with a receiving convex portion. And a positioning bead, the accommodating protrusion is radially protruded from the outer surface of the positive reversing valve and communicates with the interior of the positive reversing valve, the positioning bead is disposed in the accommodating protrusion and partially protrudes from the positive reversing valve The inner surface of the sleeve is axially recessed at least two spaced apart bead slots on the outer surface of the forward reversing valve, so that the positioning bead of the speed regulating positioning structure is located in one of the bead slots The tube phase is sleeved, wherein each axially disposed bead groove can further slide the sleeve tube axially forward and backward with respect to the positive reversing valve along the direction of the bead groove. The steering switching and transposition using device of the pneumatic tool according to claim 3, wherein the latching claw of the switching valve stem further protrudes with a card edge at the two free end edges, so that the two cards are at the same time with the card One of the latches of the cymbal is abutted against the concave surface to provide further structural strength of the snap, so that the switching stem can be firmly coupled with the positive reverse valve. The steering switching and transposition using device of the pneumatic tool of claim 4, wherein the positive reversing valve is provided with a positioning pin groove adjacent to an outer surface of the speed regulating positioning structure, so that the pneumatic tool can pass through the positioning pin. The positioning pin of the slot phase is fixed to the pneumatic tool. The steering switching and transposition using device of the pneumatic tool according to claim 5, wherein the rotating disc is provided with a plurality of numerical symbols corresponding to the rotational speed on an outer side away from the clamping rim, and the rotating disc is on the outer surface. A plurality of ribs are provided at intervals to allow the user to easily rotate the rotating disk. The steering switching and transposition using device of the pneumatic tool of claim 6, wherein the rotating disc has a receiving groove surrounding the outer end of the sleeve, away from the outer side of the clamping ring, and the elastic component The trigger link is disposed on the outer end of the speed control button and is located in the receiving groove. The steering switching and indexing device of the pneumatic tool of claim 7, wherein the trigger is coupled through a fixing bolt coupled to the front end of the trigger link. The steering switching and transposition using device of the pneumatic tool according to claim 2, wherein the latching claw of the switching valve stem further protrudes with a card edge at the two free end edges, so that the two cards are at the same time with the card One of the latches of the cymbal is abutted against the concave surface to provide further structural strength of the snap, so that the switching stem can be firmly coupled with the positive reverse valve. The steering switch and the position changing device of the pneumatic tool according to claim 1 or 2, wherein the rotating disk has a receiving groove surrounding the outer end of the sleeve, and a receiving groove surrounding the outer end of the sleeve. The elastic component is sleeved on the outer end of the trigger link extending from the speed control knob and located in the receiving slot.