TWM523558U - Switching mechanism of forward and reverse rotation valve of power tool - Google Patents

Description

Switching mechanism of power tool positive reversing valve

The present invention relates to a switching mechanism, and more particularly to a switching mechanism for a user to reconfigure a power tool positive reversing valve according to a dominant hand.

A tool for drilling or screwing a power tool, wherein the pneumatic tool is a power tool that is rotationally driven by compressed air; wherein the positive reverse valve is used in a pneumatic tool to adjust the driving force of the air motor. The switching valve and the switching valve for rotating the rotary motor in the direction of rotation.

However, since the plate of the conventional pneumatic tool is disposed on one side of the positive reversing valve, if the position of the slab is in the direction of the non-dominant hand, it may cause problems such as increased construction time and construction failure, so that The construction process is inconvenient, and if there is a specific situation that needs to be changed, in which, if the pneumatic tool can only use a certain hand and cannot be used in alternate left and right hands, it is not only significant for the constructor. The trouble and inconvenience, and the construction site where the equipment is insufficient or the transportation is inconvenient, will cause great troubles in construction, and the impediment to the progress of the project, and the inefficiency of the uneconomic phenomenon, the lack of improvement is necessary.

For the above reasons, the purpose of the present invention is to provide a switching mechanism, and more particularly to a switching mechanism in which a user can reconfigure a power tool forward reversing valve according to a dominant hand.

In order to achieve the foregoing objective, the present invention provides a switching mechanism for a power tool positive reversing valve, which is disposed in a casing, and includes: a lever, a knob, a copper sleeve, a plurality of discs and a latch; The sleeve is disposed in the outer casing, and the copper sleeve has a groove perpendicular to the axial center, wherein one end of the copper sleeve has a protrusion; the lever is disposed in the copper sleeve, and the center of the lever has a hollow hole and at least a engaging portion, and one end of the lever has a connecting surface, the connecting surface has a dial protruding from one side, wherein the connecting surface has at least one missing slot, and the protruding portion is disposed in the missing slot; The segment disk is disposed on the connecting surface and has a coupling hole; and the knob is disposed in the hollow hole of the lever, and one end of the knob is fixed in the coupling hole of the segment disk; wherein the pin is inserted through the pin The through hole of one of the outer casings allows the latch to engage with the recess of the copper sleeve and the engaging portion of the lever to achieve the function of locking the fixed lever.

In an embodiment of the present invention, the connecting mask has a groove, a ball and a spring are disposed in the groove for pushing the segment disk so that the segment disk does not rotate by the user to move the lever To maintain the correct number of segments to display.

When the user needs to change the hand, the pin can be pulled out, the lever is rotated to the other side, and the pin is inserted into one of the through holes of the outer casing, so that the pin engages with the groove of the copper sleeve, and the power can be depressed. The trigger button of the tool causes the pressure gas to enter the intake passage from the opening of the positive reversing valve to drive the pneumatic tool to rotate.

With the groove design of the bolt and the copper sleeve, the user can adjust the position of the lever in the power tool according to the habit of using the hand to overcome the conventional situation that the hand can not be used during the construction process, so it is easier to carry out. Handheld operation is more convenient to use.

100‧‧‧Switching mechanism for positive reversing valve

200‧‧‧ Shell

201, 202‧‧‧through holes

210‧‧‧ lever

211‧‧‧ hollow hole

212‧‧‧Links

2121‧‧‧ Groove

213‧‧ ‧ dial

214, 215‧‧ ‧ missing slot

216, 217‧‧ ‧ Included

220‧‧‧ knob

221‧‧‧ first end

222‧‧‧Perforation

230‧‧‧ copper sleeve

231‧‧‧ Groove

232‧‧‧Protruding

240‧‧‧ latch

250‧‧‧ Segments

251‧‧‧Contact hole

260‧‧ ‧ spring

261‧‧‧ balls

270‧‧‧C type buckle

300‧‧‧Layer button

310‧‧‧ Positioning axis

1 is a perspective exploded view showing a preferred embodiment of the present invention; FIG. 2 is an exploded perspective view showing a preferred embodiment of the present invention, and FIG. 3 is a perspective view showing a preferred embodiment of the present invention. 4A is a combination view showing a preferred embodiment of the present invention; FIG. 4B is a cross-sectional view showing a preferred embodiment of the present invention; FIG. 4B is a view showing a preferred embodiment of the present invention; A schematic diagram of the actuation of the embodiment; and FIG. 7 is a front view showing the reverse of the preferred embodiment of the present invention disposed in the power tool.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

Figure 1 is a perspective exploded view showing a preferred embodiment of the present invention. As shown in FIG. 1 , the present invention provides a switching mechanism 100 for a power tool forward reversing valve, comprising: a lever 210, a knob 220, a copper sleeve 230, a plurality of discs 250 and a latch 240 (shown in FIG. 2 ).

The two sides of the lever 210 have two engaging portions 216 and 217, and a hollow hole 211 is defined in the center. The one end of the lever 210 has a connecting surface 212. The connecting surface 212 has a protruding surface on one side. A dial 213 is provided to facilitate the user to switch the reverse rotation, wherein the joint surface 212 has at least one notch 214, 215.

The number of the discs 250 is disposed on the connecting surface 212, and the center of the plurality of discs 250 has a coupling hole 251; the knob 220 is disposed in the hollow hole 211 of the lever 210 and is combined with the number of discs 250 251 fixed.

In the present embodiment, the fixing manner is such that the first end 221 of the knob 220 passes through the coupling hole 251 of the segment number disk 250 and is clamped to the first end through the C-shaped buckle 270. 221, in order to achieve a fixed function, however, the manner of fixing is not limited to this, the manufacturer can change according to requirements. In the present embodiment, the first end 221 has a rectangular cross section, and the coupling hole 251 fixed to the first end 221 has a corresponding shape, so that the knob 220 cannot rotate in the coupling hole 251. However, the shape of the cross section is not limited thereto, and the manufacturer may change it to a hexagon or other shape as needed, and change the coupling hole 251 to a corresponding shape together to achieve the function of the card fixing.

In the present embodiment, the connecting surface 212 further has a recess 2121. A ball 261 and a spring 260 are disposed in the recess 2121. The thrust of the spring 260 causes the ball 261 to push the disc 250, wherein Since the segment disk 250 and the first end 221 are fixed, when the user rotates the dial 213, the segment disk 250 does not rotate to maintain the correct number of segments.

The copper sleeve 230 is sleeved on the outside of the lever 210, and the copper sleeve 230 has at least one recess 231 extending perpendicularly to the axial center of the copper sleeve 230. The one end of the copper sleeve 230 has a protrusion 232. The protruding portion 232 is disposed in the notch 214 of the lever 210.

2 is an exploded perspective view showing the preferred embodiment of the present invention disposed in a power tool. As shown in FIG. 2, the switching mechanism 100 of the power tool of the present invention is disposed in a casing 200 of a power tool. The copper sleeve 230 is fixed on the outer casing 200. The outer casing 200 has a through hole 201. And 202, the switching mechanism is inserted through the through holes 201 and 202 to lock the switching mechanism of the positive reverse valve. In the present embodiment, the knob 220 has a through hole 222 at the center thereof, so that the positioning shaft 310 of the trigger button 300 is passed through.

3 and 4A are front and combined views showing the forward rotation of the preferred embodiment of the present invention in a power tool. As shown in FIG. 3 and FIG. 4A, the extending direction of the dial 213 is horizontal. The direction of the line is rotated about 45 degrees clockwise. At this time, the opening of the positive reversing valve inside the pneumatic tool is aligned with the forward rotation passage (not shown). When the user presses the trigger button 300, the pressure gas can be positively pressurized. The opening of the reverse valve enters the forward rotation inlet passage and drives the pneumatic tool to rotate forward (not shown).

Specifically, the lever 210 is first rotated to the desired position, and the lever 210 is pushed inward. At this time, the protrusion 232 is disposed in the slot 214, and the pin 240 is transmitted through the through hole of the housing 200. The 201 is inserted and passed through the recess 231 of the copper sleeve 230 and the engaging portion 217 which is engaged with the side of the lever 210, and finally passes through the through hole 202 at the other end of the outer casing 200, so that the latch 240 is engaged in the recess. 231 and the engaging portion 217 of the lever 210 prevent the protruding portion 232 from being disengaged from the notch 214 of the copper sleeve 230 when the lever 210 is rotated, so as to achieve the function of locking the fixed lever 210.

Figure 4B is a cross-sectional view showing 4A of the preferred embodiment of the present invention. As shown in FIG. 4B, the protruding portion 232 is disposed in the notch 214, and the angle of rotation of the dial 213 is the distance between the protruding portion 232 and the ends of the inner wall of the notch 214. Wherein, in the present embodiment, the lever 210 has two notches 214, 215, and the notches 214, 215 are disposed at positions opposite to each other, but the number of slots is not limited thereto, and the manufacturer can follow the dial 213 The position and distance of the required rotation to change the length of the missing groove and increase the number of missing slots.

5 and 6 are schematic views showing the operation of the preferred embodiment of the present invention. As shown in FIGS. 5 and 6, when the user needs to replace the dominant hand, the latch 240 can be pulled out first. At this time, the lever 210 can be axially moved in the copper sleeve 230, and the user can move the lever 210 toward A first direction (indicated by an arrow in the figure) is moved to disengage the protruding portion 232 from the notch 214 of the lever 210, and then the dial 213 is dialed to the other side, and the lever 210 is pushed back to make the protruding portion 232 The pin 240 is inserted into the through hole 201, 202, and the pin 240 is inserted into the groove 2121 of the copper sleeve 230 and the engaging portion 216 of the lever 210 to prevent the pin 260 from being caught. The lever 210 protrudes while rotating The portion 232 is separated from the notch 215.

Fig. 7 is a front elevational view showing the reverse of the preferred embodiment of the present invention in a power tool. As shown in FIG. 7, the extending direction of the lever 210 is about 45 degrees counterclockwise in the direction of the horizontal line. At this time, the opening of the positive reversing valve inside the pneumatic tool is aligned with the reverse intake passage (not shown), when the user presses When the trigger button 300 is pressed, the pressure gas can be reversed from the opening of the positive reversing valve to reverse the intake passage to reverse the pneumatic tool (not shown).

In the present embodiment, the power tool is a pneumatic tool, but the type of the power tool is not limited thereto, and the manufacturer can change it according to requirements.

The switching mechanism of the power tool of the present invention is designed by the latch and the engaging portion and the copper sleeve protruding portion and the missing slot, so that the user can reconfigure the position of the dial according to the habit of his dominant hand to overcome the habit. Knowing that it is not possible to change hands during the construction process, it is easier to carry out the handheld operation, which is more convenient to use and achieve the purpose of creation.

It can be seen from the above embodiments that the switching mechanism of the power tool positive reversing valve provided by the present invention has industrial utilization value, but the above description is only a description of the preferred embodiment of the present invention, and those skilled in the art can Other improvements are possible in light of the above description, but such changes are still within the spirit of the present invention and the scope of the patents defined below.

100‧‧‧Switching mechanism for positive reversing valve

210‧‧‧ lever

211‧‧‧ hollow hole

212‧‧‧Links

2121‧‧‧ Groove

213‧‧ ‧ dial

214, 215‧‧ ‧ missing slot

216, 217‧‧ ‧ Included

220‧‧‧ knob

221‧‧‧ first end

222‧‧‧Perforation

230‧‧‧ copper sleeve

231‧‧‧ Groove

232‧‧‧Protruding

250‧‧‧ Segments

251‧‧‧Contact hole

260‧‧ ‧ spring

261‧‧‧ balls

270‧‧‧C type buckle

Claims (2)

A switching mechanism for a power tool positive reversing valve is disposed in a casing, comprising: a copper sleeve fixed to the outer casing, having a groove perpendicularly penetrating the axial center, wherein one end of the copper sleeve has a protrusion a lever, disposed in the copper sleeve, having a hollow hole and at least one engaging portion, and one end of the lever has a connecting surface, the connecting surface has a dial protruding from one side, wherein The connecting surface has at least one notch; a plurality of disks disposed on the connecting surface and having a coupling hole; a knob disposed in the hollow hole of the lever, wherein one end of the knob and the number of the segment The engaging hole of the disk is fixed; and a latch is inserted through the through hole of the outer casing and engaged with the engaging portion of the lever; wherein the protruding portion is disposed in the notch. The switching mechanism of the power tool forward reversing valve according to claim 1, wherein the connecting mask has a groove, and a ball and a spring are disposed in the groove.