TWM540025U - Speed control device of pneumatic tool - Google Patents

Description

Speed control device for pneumatic tools

The present invention relates to a speed control device for a pneumatic tool, and relates to a technical field related to the improvement of a speed control device for a pneumatic tool.

According to the prior art pneumatic tool 4 (shown in FIG. 1), the speed control device 5 includes a directional valve 51, a valve sleeve 52, a dial knob 53, a speed control valve 54, a pressure valve lever 55, and a trigger button 56. And a spring 57 and the like, which are mainly arranged by adjusting a plurality of different size control holes 5411, 5412, and 5413 of the speed control valve body 541 of the speed regulating valve 54 to align the air inlet 521 of the valve sleeve 52. For the purpose of adjusting the speed, the speed control valve 54 is processed by a regulating valve body 541 and an adjusting button 542, respectively, or integrally formed, due to complicated structure, troublesome manufacturing and high cost, and the speed regulating valve 54 is When the user rotates the adjustment, it is also difficult to accurately position the speed adjustment holes 5411, 5412, and 5413 that are expected to be adjusted to the air intake holes 521 of the valve sleeve 52, thereby causing inconvenience in adjusting the positioning action.

In view of this, the creator has finally created and designed a speed control device for pneumatic tools through continuous research and improvement.

The main purpose of this creation is to provide a speed control device for a pneumatic tool. By adjusting the distance between the speed control dial and the dial control knob, the distance between the front end of the valve body and the air inlet of the valve sleeve can be adjusted, and then the adjustment can be adjusted. The amount of intake air is relatively large, and the speed is adjustable. The utility model has the advantages of simple structure, low manufacturing cost and convenient adjustment operation.

A speed control device for a pneumatic tool, including a directional valve, The valve sleeve, the dial knob, the speed control dial, the pressing valve stem, the trigger button, the compression spring and the like are mainly composed of at least two respectively disposed between the front end surface of the dial control knob and the rear end surface of the speed control dial. a positioning group, each positioning group includes at least three positioning concave portions and at least two positioning convex portions, so that each positioning convex portion can be respectively positioned in one of at least three adjacent positioning concave portions of the positioning group, that is, Selecting to change the distance between the speed control dial and the dial control knob, and relatively adjusting the distance between the front end of the valve body of the pressing valve stem fixed by the trigger button and the air inlet of the valve sleeve, thereby adjusting the air intake amount, which can be relatively achieved. The purpose of adjusting the speed is practical and progressive due to the simple structure, low manufacturing cost, and convenient and easy adjustment operation.

[study]

(4) ‧‧‧ pneumatic tools

(5) ‧ ‧ speed control device

(51)‧‧‧ directional valve

(52)‧‧‧ valve sleeve

(521)‧‧‧Air intake

(53)‧‧‧ dial knob

(54) ‧ ‧ speed control valve

(541)‧‧‧Speed valve body

(5411) (5412) (5413) ‧ ‧ speed control holes

(542)‧‧‧Adjustment button

(55)‧‧‧Press the valve stem

(56)‧‧‧Layer button

(57) ‧ ‧ spring

[this creation]

(1) ‧‧‧Operation Department

(10)‧‧‧Air motor

(11)‧‧‧Reversing the intake passage

(12) ‧‧‧ Forward air intake

(2) ‧‧‧ grip

(20) (38) ‧ ‧ sales

(21)‧‧‧Intake passage

(3) ‧ ‧ speed control structure

(31) ‧ ‧ directional valve

(312)‧‧‧ Air guiding slots

(314)‧‧‧Axial perforation

(32)‧‧‧ valve sleeve

(323)‧‧‧ Vents

(324)‧‧‧ Air intake

(321) (322) ‧‧‧ Through Hole

(33)‧‧‧ dial knob

(330) (340)‧‧‧ shaft holes

(331) (332) (333) (334) ‧ ‧ positioning recess

(34)‧‧‧Speed turntable

(341)‧‧‧ Positioning convex

(35)‧‧‧Press the valve stem

(351)‧‧‧ valve body

(3511) ‧‧‧ front end

(352) (353) ‧ ‧ small airtight ring

(354) ‧ ‧ airtight ring

(36)‧‧‧Layer button

(37)‧‧‧Compressed springs

(A) ‧ ‧ positioning group

(D2) (D3) (D4) ‧ ‧ spacing

(W2) (W3) (W4) ‧ ‧ distance

Fig. 1 is a partially exploded perspective view of a conventional pneumatic tool.

Fig. 2 is a perspective view showing a part of the exploded state of the present embodiment.

Figure 3 is a partial cross-sectional view showing the combined plane of the present embodiment.

Fig. 4 is an enlarged perspective view showing another angle of the present embodiment.

Fig. 5 is an enlarged perspective view showing another angle of the dial knob of the present embodiment.

Fig. 6 is a plan enlarged view of the dial knob of the present embodiment.

Fig. 7 is an enlarged perspective view showing another angle of the dial knob of the present embodiment.

Fig. 8 is an enlarged perspective view showing another angle of the dial knob of the present embodiment.

Fig. 9 is an enlarged perspective view showing another angle of the dial knob of the present embodiment.

Figure 10 is a partially enlarged cross-sectional view showing the state in which the trigger button has not been pressed in the present embodiment.

Figure 11 is an enlarged plan view showing a portion of the front view plane in which the speed control dial is rotated in the present embodiment.

FIG. 12 is a partially enlarged cross-sectional view showing the change of the distance between the front end of the valve body of the valve stem and the air inlet of the valve sleeve after the speed dial is rotated and the trigger button is pressed.

Figure 13 is an enlarged plan view showing a portion of the front view plane in which the speed control dial is rotated in the present embodiment.

Fig. 14 is a partially enlarged cross-sectional view showing the change of the distance between the front end of the valve body of the valve stem and the air inlet of the valve sleeve after the speed dial is rotated and the trigger button is pressed.

Figure 15 is an enlarged plan view showing a portion of the front view plane in which the speed control dial is rotated in the present embodiment.

Fig. 16 is a partially enlarged cross-sectional view showing the change of the distance between the front end of the valve body of the valve stem and the air inlet of the valve sleeve after the speed dial is rotated and the trigger button is pressed.

Figure 17 is a perspective enlarged view of another angle of the speed control car in the present embodiment.

As shown in FIG. 2 to FIG. 17, the present invention provides a speed control device for a pneumatic tool, wherein: the pneumatic tool comprises: an actuating portion 1 (refer to FIG. 2 to FIG. 3), which is driven by a pressurized gas to drive a pneumatic device. The motor 10 (refer to FIG. 3) drives the actuating portion 1, and the rear end thereof is respectively provided with a reverse air inlet passage 11 (refer to FIG. 4) and a forward rotation air inlet passage 12; a grip 2 is provided for the user to hold, And an intake passage 21 (refer to FIG. 3); the speed control structure 3 includes: a directional valve 31 (refer to FIG. 2, FIG. 10), which is fixed by a first fixing component such as a pin 20 (refer to FIG. 2). Provided at the intersection of the upper portion of the grip 2 and the actuating portion 1, there is an air guiding slot 312 (refer to FIG. 10) to communicate with the intake passage 21 of the grip 2 (refer to FIG. 10), the directional valve 31 and has an axial through hole 314 (refer to FIG. 2, FIG. 10); A valve sleeve 32 is sleeved on the outside of the directional control valve 31. The valve sleeve 32 is respectively provided with an air inlet 324 (refer to FIG. 10) and a venting opening 323, and the valve sleeve 32 corresponds to the operating portion 1 The reverse air inlet passage 11 and the forward rotation air inlet passage 12 are respectively provided with a through hole 321, 322 (refer to FIG. 2); a dial knob 33 has a shaft hole 330 (refer to FIG. 2, FIG. 10), and the circumference of the front end surface thereof At least two positioning groups A (see FIG. 5, FIG. 8 to FIG. 9) are arranged in the direction, and each positioning group A includes adjacent at least three positioning concave portions 331, 332, 333, and 334 (refer to FIG. 5 and FIG. 8). ~ FIG. 9), in this embodiment, three sets of positioning groups A are arranged, each positioning group A includes four adjacent positioning recesses 331, 332, 333, 334, and each positioning concave portion 331, 332, 333, The 334 series respectively have positioning grooves with different depths; a speed adjusting wheel 34 is provided with a shaft hole 340 (refer to FIG. 2), and the rear end surface of the speed adjusting wheel 34 is arranged at least at intervals in the circumferential direction to provide two positioning convex portions 341 (another Referring to FIG. 16 to FIG. 17 ), three positioning protrusions 341 are disposed at intervals in the embodiment, and the three positioning protrusions 341 are respectively positioned on the positioning group A of the dial knob 33 . One of at least three adjacent positioning recesses 331, 332, 333, and 334, and then adjusting the speed dial 34 (refer to FIGS. 14 to 15) to adjust the speed dial 34 and the dial knob 33 The distance D2, D3, D4 (refer to FIG. 12, FIG. 14, FIG. 16); a pressing valve stem 35 (refer to FIG. 2, FIG. 10) is inserted through the axial through hole 314 of the aligning valve 31, and has one end thereof The valve body 351 of the air inlet 324 of the valve sleeve 32 can be closed, and the rear side of the valve body 351 is provided with a gas-tight ring 354 (refer to FIG. 10) for sealing the air inlet 324, the pressure valve stem The other end of the 35 extends and passes through the axial through hole 314 of the directional control valve 31 (refer to FIG. 10), the shaft hole 330 of the dial knob 33 and the shaft hole 340 of the speed control dial 34, and then engages and fixes a trigger button 36. In addition, the pressing valve stem 35 is disposed at a portion of the axial through hole 314 of the directional control valve 31, and is provided with one or more small airtight rings 352, 353 (refer to FIG. 10); a trigger button 36 (refer to FIG. 2, FIG. 10). ), through the second fixed component If the pin 38 is fixed to the other end of the pressing valve stem 35, and a compression spring 37 is disposed between the trigger button 36 and the speed regulating dial 34, the trigger button 36 is pressed to have an elastic restoring force.

With the composition of the foregoing members, the compression spring 37 acts between the trigger button 36 and the speed control dial 34, and the rear end of the speed control dial 34 is held against the front end of the dial knob 33 by the top support of the compression spring 37. The surface (refer to FIG. 10), at this time, the air inlet 324 of the valve sleeve 32 can be sealed by the airtight ring 354 provided by the valve body 351 of the pressing link 35, and is fixed together with the trigger button 36 when the user presses the trigger button 36. The valve stem 35 is pressed rearwardly, so that the airtight ring 354 of the valve body is disengaged from the air inlet 324 of the valve sleeve 32, so that the pressurized gas can pass through the air inlet 324 through the air inlet passage 21 (refer to FIG. 12, FIG. 14. FIG. 16); when the user wants to adjust the speed, the rotation speed adjustment dial 34 (refer to FIG. 11, FIG. 13, FIG. 15) is rotated, so that each positioning convex portion 341 is respectively positioned on each of the dial knobs 33. When one of the positioning groups A positions the recesses 331, 332, 333, 334 (refer to FIG. 5 to FIG. 9), the distance between the speed dial 34 and the dial knob can be selected to be changed from D2, D3, and D4 (refer to FIG. 12, 14 and 16), the front end 3511 of the valve body 351 and the valve of the pressing valve stem 35 fixed by the trigger button 36 are also adjusted. The distances of 32 are W2, W3 and W4, and the size of the intake air can be adjusted to achieve the adjustable speed. The structure is simple, the manufacturing cost is low, and the adjustment and positioning operation is convenient and easy, but practical and progressive. .

In summary, the present invention is provided by at least two positioning groups A respectively disposed between the front end surface of the dial knob 33 and the rear end surface of the speed control dial 34, and each positioning group A includes adjacent at least three positioning recesses. 331, 332, 333, 334 and at least two positioning protrusions 341, such that each positioning protrusion 341 can be respectively positioned in one of the at least three adjacent positioning recesses 331, 332, 333, 334 of the positioning group A Means, the distance between the speed dial 34 and the dial knob 33 can be changed, D2, D3, D4 (refer to FIG. 12, FIG. 14, FIG. 16), and the pressing valve rod 35 fixed by the trigger button 36 can be adjusted. Valve body 351 The distance between the front end 3511 and the air inlet 324 of the valve sleeve 32 is W2, W3, W4 (refer to FIG. 12, FIG. 14, FIG. 16), and the amount of intake air can be adjusted to achieve the purpose of adjustable speed, and the structure is simple. The manufacturing cost is low, and the adjustment operation is convenient and easy, and practical and progressive.

Furthermore, substantially the same technical application can achieve the aforementioned intended purpose and effect. For example, at least two positioning groups (not shown) are arranged in the circumferential direction of the rear end surface of the speed regulating dial 34, and each positioning group includes at least three adjacent ones. Positioning recesses (not shown), each of the positioning recesses has a different depth of the positioning groove; and the circumferential direction of the front end surface of the dial knob 33 is at least spaced apart from each other to provide two positioning protrusions (not shown), the at least two The positioning protrusions are respectively positioned on one of the at least three adjacent positioning recesses of the positioning group of the speed control dial 34, and then the rotation speed adjustment knob 34 can be adjusted to the speed control dial 34 and the dial knob 33 distances.

Therefore, the creation of this case does have its practical and effective effect. If you apply for a new type of patent, you should ask the review board of the bureau to investigate and grant the patent.

However, the above descriptions are only preferred embodiments of the present invention. When it is not possible to limit the scope of the implementation of the present invention, the equivalent changes and modifications made by the scope of the patent application of this creation should still be the patents covered by the present creation. Within the scope.

(2) ‧‧‧ grip

(21)‧‧‧Intake passage

(3) ‧ ‧ speed control structure

(31) ‧ ‧ directional valve

(324)‧‧‧ Air intake

(312)‧‧‧ Air guiding slots

(32)‧‧‧ valve sleeve

(33)‧‧‧ dial knob

(331) (333) ‧ ‧ positioning recess

(34)‧‧‧Speed turntable

(341)‧‧‧ Positioning convex

(35)‧‧‧Press the valve stem

(351)‧‧‧ valve body

(3511) ‧‧‧ front end

(352) (353) ‧ ‧ small airtight ring

(354) ‧ ‧ airtight ring

(36)‧‧‧Layer button

(37)‧‧‧Compressed springs

(38) ‧ ‧ sales

(D4) ‧‧‧ spacing

(W4) ‧ ‧ distance

Claims (2)

A speed control device for a pneumatic tool, wherein: the pneumatic tool comprises: an actuating portion driven by a pressurized gas to drive a pneumatic motor to drive the actuating portion, the rear end of which is provided with a forward-rotating intake passage and a reversal An air intake passage; a grip for the user to hold, and an intake passage; the speed control structure includes: a directional valve fixedly disposed inside the grip through the first fixing member The intersection of the actuating portion has an air guiding slot for communicating with the intake passage of the grip, the adjusting valve has an axial perforation; and a valve sleeve is sleeved on the outside of the adjusting valve, The valve sleeve is respectively provided with an air inlet and a venting hole, and the valve sleeve is provided with a through hole corresponding to the reverse air inlet passage and the forward rotation air inlet passage of the actuating portion; a dial knob has a shaft hole and a front end thereof At least two positioning groups are arranged in the circumferential direction of the surface, each positioning group includes at least three positioning concave portions adjacent to each other, and each positioning concave portion has different positioning grooves of different depths; a speed regulating turntable is provided with a shaft hole , the rear end of the speed dial Two positioning protrusions are disposed at least in the circumferential direction, and the positioning protrusions are respectively positioned on one of at least three adjacent positioning recesses of the positioning group of the dial knob, and the rotating speed adjusting wheel is adjusted through rotation. The distance between the speed regulating dial and the dial control knob can be adjusted; a pressing valve stem is inserted through the axial through hole of the adjusting valve, and one end thereof has a valve body that can close the air inlet of the valve sleeve, and the valve body An airtight ring for sealing the air inlet is provided on a rear side thereof, and the other end of the pressing valve rod extends and penetrates the axial hole of the adjusting valve, the shaft hole of the dial knob and the speed regulating dial a shaft hole, and then engage a trigger button, In addition, the pressing valve stem is disposed at an axial perforation portion of the directional control valve, and one or more small airtight rings are disposed; a trigger button is fixed to the other end of the pressing valve rod through the second fixing component, and the trigger button is A compression spring is arranged between the speed control dials to make the trigger button have an elastic restoring force after being pressed. A speed control device for a pneumatic tool, wherein: the pneumatic tool comprises: an actuating portion driven by a pressurized gas to drive a pneumatic motor to drive the actuating portion, the rear end of which is provided with a forward-rotating intake passage and a reversal An air intake passage; a grip for the user to hold, and an intake passage; the speed control structure includes: a directional valve fixed to the upper portion of the grip through the first fixing member and The intersection of the actuating portion has an air guiding slot for communicating with the intake passage of the grip, the adjusting valve has an axial perforation; a valve sleeve is sleeved outside the steering valve, the valve The sleeve is respectively provided with an air inlet and a venting hole, and the valve sleeve is provided with a through hole corresponding to the reverse air inlet passage and the forward rotation air inlet passage of the actuating portion; and a speed regulating turntable is provided with a shaft hole, the adjusting At least two positioning groups are arranged in the circumferential direction of the rear end surface of the speed dial, each positioning group includes at least three positioning concave portions adjacent to each other, each positioning concave portion has a positioning groove with different depths; a dial knob has a shaft hole , the circumferential side of the front face The at least two positioning protrusions are respectively disposed at least one of the at least three positioning positioning portions of the positioning group of the speed control turntable, and the rotating speed adjusting wheel is adjusted by rotation. The distance between the speed regulating dial and the dial control knob can be adjusted; a pressing valve stem is inserted through the axial through hole of the adjusting valve, and one end thereof has a valve body that can close the air inlet of the valve sleeve, and the valve body On the back side An airtight ring for sealing the air inlet, the other end of the pressing valve rod extends and passes through the axial hole of the directional control valve, the shaft hole of the dial knob and the shaft hole of the speed control dial, Re-joining and fixing a trigger button, and the pressing valve stem is disposed at an axial perforation portion of the directional control valve to be provided with one or more small airtight rings; a trigger button is transmitted through the second fixing member and pressing the other end of the valve stem Fixed, and a compression spring is arranged between the trigger button and the speed control dial, so that the trigger button has an elastic restoring force after being pressed.