CN201752884U - Novel rotational speed regulating mechanism - Google Patents
Novel rotational speed regulating mechanism Download PDFInfo
- Publication number
- CN201752884U CN201752884U CN2010201693692U CN201020169369U CN201752884U CN 201752884 U CN201752884 U CN 201752884U CN 2010201693692 U CN2010201693692 U CN 2010201693692U CN 201020169369 U CN201020169369 U CN 201020169369U CN 201752884 U CN201752884 U CN 201752884U
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- stator
- spacer
- stem
- suction port
- rotating speed
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Abstract
A rotational speed regulating mechanism comprises a gas inlet joint and a rotary sleeve. A bushing with a larger outer diameter is arranged in the front of the gas inlet joint; a rod-shaped portion with a smaller outer diameter is arranged at the back of the gas inlet joint; a step is formed between the bushing and the rod-shaped portion; the rotary sleeve sleeved on the outer side of the gas inlet joint can rotate relative to the gas inlet joint; a sleeve body is arranged in the front of the rotary sleeve; a rod is arranged at the back of the rotary sleeve; an annular step surface with a fixed positioning sheet is arranged on the inner side of the sleeve body; a wave washer and a fixing sheet are sequentially fixedly sleeved on the step formed between the rod-shaped portion and the bushing; the wave washer, the fixing sheet and the positioning sheet are sequentially clamped between the step of the gas inlet joint and the step surface of the rotary sleeve; and a rotary positioning mechanism is arranged between the fixing sheet and the positioning sheet. The rotational speed regulating mechanism can conveniently and accurately control flow of inlet gas, has obvious gears of the gas flow, can still keep fine contact along with less abrasion after being repeatedly used, and has longer service life.
Description
Technical field
The utility model relates to a kind of air tool rotating speed adjusting mechanism.
Background technology
In the existing pneumatic tool, usually all reach the running speed of control air chamber rotor by the mode of control gas flow size, this step is finished by the flow controller of different structure designs, known many rotating speed controlling organizations, the valve rods that are set as special shape that adopt more, be hubbed in the gas passage of pneumatic tool between between air chamber and the inner inlet channel of lever, change by the rotation of valve rod again from inlet channel and enter gas flow in the air chamber, to reach the purpose that changes the rotor running speed, but the used valve rod shape of this technology is special, in manufacturer is not simple and easy, and its sperm quality of finishing also difficulty keep, moreover, because the precision of valve rod is not good, its whole rotating speed Kong child mechanism is placed on the centre position of pneumatic tool gas passage in addition, therefore, when gases at high pressure fill in inlet channel, existing pressure will cause portion gas to produce the situation that leaks.Therefore some having occurred can make things convenient for adjustments of gas flow and the flow regulator that is easy to process simple in structure to occur, such as Chinese patent CN2705647Y disclosed a kind of " air tool air flow control valve ", comprise that a breather pipe has a body and is formed with one first spiral shell portion, and be provided with first sealing successively, one crosses hermetic seal portion and with second sealing, between one air admission hole conducting to the first sealing and the mistake hermetic seal portion, one steam vent conducting is to crossing between the hermetic seal portion and second sealing, but having a body, an air-control revolving sleeve have one first screw spiral shell to move the first spiral shell portion in breather pipe, offer one first sealing in regular turn, one crosses hermetic seal portion and one second sealing, one first seal is in order to first sealing of sealing breather pipe and first sealing of air-control revolving sleeve, one second seal is in order to second sealing of sealing air-control revolving sleeve and second sealing of breather pipe, one control seal is in order to the hermetic seal portion of crossing of crossing hermetic seal portion and breather pipe of sealing air-control revolving sleeve, but the control seal is used for spiral shell conducting control gas between the movable air admission hole that makes breather pipe and steam vent when moving, such control throughput control valve, though convenient processing, but parts more complicated, the gear control of regulation and control gas flow is not obvious, and, after of long duration, first, second, control seal and breather pipe, all can produce wearing and tearing between the air-control revolving sleeve and produce the gap, cause the instability of flow-control.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in structure, flow-control gear obviously and the pneumatic tool rotating speed adjusting mechanism of long service life at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of rotating speed adjusting mechanism is characterized in that: comprise
Inlet suction port, its front portion is the bigger sleeve of external diameter, the rear portion is the less stem of external diameter, form step between the two, gas channel in the described inlet suction port is divided into mutual disconnected inlet channel and outlet passageway, the outside of stem has air admission hole that is communicated with inlet channel and the venthole that is communicated with outlet passageway, and described air admission hole and described venthole are set up in parallel along the major axis of stem;
Be placed in the described inlet suction port outside and can be with respect to the rotary sleeve of inlet suction port rotation, the front portion of described rotary sleeve is that a body rear portion is a body of rod, the inboard of described body has a circular step face and is fixed with spacer, the internal diameter of the described body of rod and the external diameter of described stem are complementary, and the described body of rod has a through hole and can expose to described air admission hole of small part and described venthole;
On the step that forms between described stem and the sleeve successively socket be fixed with wave washer and stator, described wave washer, stator and spacer are stuck between the step surface of the step of inlet suction port and rotary sleeve successively, are provided with rotary positioning mechanism between described stator and the spacer.
Preferably, described through hole can expose whole described air admission hole and described venthole simultaneously, the marginal texture symmetry of described through hole, and the edge is a waveform.
More preferably, described rotary positioning mechanism is two axisymmetric projections in the center with respect to stator that have on the face relative with described stator on six the groove A that are equally spaced that have on the face relative with spacer on the described stator and the described spacer, and described projection and described groove A are complementary and can be fixed mutually in twos.
In order to prevent this rotating speed adjusting mechanism gas leakage, can control gas flow better, the stem of described inlet suction port is provided with groove B and is socketed with little O type circle.
As a variation of the present utility model, the position of described groove A and described projection setting can exchange.
In order to prolong the service life of this rotating speed adjusting mechanism, the face that described stator is relative with described spacer is processed through metal fever and is handled.
Compared with prior art, advantage of the present utility model is to control the flow that enters gas easily and accurately, and the gear of gas flow size is obvious, after using repeatedly, still can keep excellent contact, rarer wearing and tearing make this rotating speed adjusting mechanism have long service life.
Description of drawings
Fig. 1 is the exploded view of the rotating speed adjusting mechanism of the utility model embodiment.
Fig. 2 is the schematic diagram after the rotating speed adjusting mechanism of the utility model embodiment removes housing.
Fig. 3 is the cutaway view of the rotating speed adjusting mechanism of the utility model embodiment.
Fig. 4 is the schematic diagram of spacer and stator in the rotating speed adjusting mechanism of the utility model embodiment.
Fig. 5 is the schematic diagram of rotary sleeve in the rotating speed adjusting mechanism of the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Rotating speed adjusting mechanism of the present utility model as shown in Figure 1, comprises housing 1, inlet suction port 2, little O type circle 3, wave washer 4, stator 5, spacer 6, rotary sleeve 7 and rotary sleeve O type circle 8 compositions.Described rotary sleeve 7 front portions are the bigger body of diameter 72, the rear portion is a body of rod 71, the inboard of described body 72 also has a step surface and is used for ccontaining and stationary positioned sheet 6, spacer 6 is an annular flake, its structure as shown in Figure 4, described spacer 6 wherein the one side have two locator protrusions 61, these two locator protrusions 61 are symmetricly set in the two ends of spacer 6 central shafts, described spacer 6 fixes with rotary sleeve 7, and has facing laterally of locator protrusions 61.
The inlet suction port 2 front portions sleeve 24 bigger that be diameter with respect to rear portion stem 25, have a groove B23 on the described stem 25 and be used for ccontaining little O type circle 3, the rear side of stem 25 has screw thread 26, stem 25 forms a step surface with the transition position of sleeve 24, wave washer 4, after stator 5 is placed on this stem 25 successively and is fixed on the step surface between stem 25 and the sleeve 24, put the rotary sleeve 7 of the spacer 6 of having packed into again in inlet suction port 2 outsides, wave washer 4, stator 5 and spacer 6 just in time are stuck between the step surface of the step surface of inlet suction port 2 and rotary sleeve 7 successively.Shown in Fig. 2,3, the stem 25 of inlet suction port 2 is positioned at the body of rod 71 of rotary sleeve 7, the external diameter of the internal diameter of the body of rod 71 of rotary sleeve 7 and the stem 25 of inlet suction port 2 is complementary inlet suction port 2 and rotary sleeve 7 can be relatively rotated, and the screw thread 26 of stem 25 rear sides stretches out from rotary sleeve 7 rear sides.
Above-mentioned stator 5 also is with annular flake, and this stator 5 has 6 groove A51 that are equally spaced in the face of on the face of spacer 6.Projection 61 on this groove A51 and the spacer 6 is complementary, because wave washer 4 has certain elasticity, in the process of rotary sleeve 7 with respect to inlet suction port 2 rotation, among these 2 projections 61 and 6 the groove A51 two the relative position between rotary sleeve 7 and the inlet suction port 2 of being fixed that is complementary in twos.Projection 61 on the described spacer 6 has constituted a rotary positioning mechanism with the groove A51 on the described stator 5.And stator 5 and spacer 6 relative faces are handled through METAL HEATING PROCESS, even under the situation of repeatedly spin friction, this metal covering still can not wear and tear, and has increased the service life of rotating speed adjusting mechanism yet.And the number of this projection and groove A and position those skilled in the art also can make the change design according to above-mentioned principle, and those skilled in the art also can adopt other rotary positioning mechanism, such as the position of the setting that can exchange projection and groove A, other rotary positioning mechanism is set between spacer 6 and stator 5.
As shown in Figure 3, the body of rod 71 of rotary sleeve 7 is placed in the outside of the stem 25 of inlet suction port 2, and the gas channel of stem 25 inside is divided into two mutual disconnected pipelines, is respectively admission line 27 and outlet pipe 28.Have two holes along the adjacent setting of major axis of stem 25 on the stem 25, one is that 21, one of air admission holes are venthole 22, and wherein, air admission hole 21 is communicated with admission line 27, and venthole 22 is communicated with outlet pipe 28.The through hole with a symmetry 73 of the body of rod 71 can expose air admission hole 21 and venthole 22 simultaneously, and the edge of through hole 73 is a waveform, in the position as shown in Fig. 2,3, this through hole 73 can expose whole air admission hole 21 and venthole 22 simultaneously, can from air admission hole 21 flow out from the air-flow that admission line 27 flows into this moment, space by through hole 73 exposes returns from venthole 22 in the outlet pipe 28, and the flow maximum of air-flow; When turning to certain position, the air admission hole 21 and the venthole 22 of 73 exposed portions serve of this through hole, the flow of air-flow reduces relatively, after turning over certain position again, through hole 73 will can not expose air admission hole 21 and venthole 22, have space owing to be not to fit fully between the body of rod 71 and the stem 25 this moment, and a spot of air-flow still can flow out from the air admission hole 21 of admission line 27 and enter outlet pipe 27 from venthole 22.Therefore, by the setting between such inlet suction port 2 and the rotary sleeve 7, can carry out the flow-control and and then the control rotating speed of air-flow.And because groove A51 and the projection 61 on the spacer 6 on the stator 5 on the inlet suction port 2 can be mated in twos in rotation and be fixed and this projection groove all is that stator or spacer along annular evenly distributes, therefore the sensation of the commentaries on classics shelves when rotation rotary sleeve 7 will be more obvious, is easy to user's control.
After inlet suction port 2 and rotary sleeve 7 installations, again after O type circle 8 is loaded onto in the body of rod 71 outsides of rotary sleeve, socket upper shell 1, the pneumatic tool of just can packing into uses, certainly those skilled in the art also can be according to the shape and the size of individual's air tool structural design housing 1, perhaps even omit this housing, directly this rotating speed adjusting mechanism is placed in the pneumatic tool.
In addition to the implementation, the utility model also includes other embodiments, and the technical scheme that all employing equivalents or equivalent substitute mode form all should fall within the protection domain of the utility model claim.
Claims (6)
1. a rotating speed adjusting mechanism is characterized in that: comprise
Inlet suction port (2), its front portion is the bigger sleeve of external diameter (24), the rear portion is the less stem of external diameter (25), form step between the two, gas channel in the described inlet suction port (2) is divided into mutual disconnected inlet channel (27) and outlet passageway (28), the outside of stem (25) has air admission hole (21) that is communicated with inlet channel (27) and the venthole (22) that is communicated with outlet passageway (28), and described air admission hole (21) is set up in parallel with the major axis of described venthole (22) along stem (25);
Be placed in described inlet suction port (2) outside and can be with respect to the rotary sleeve (7) of inlet suction port (2) rotation, the front portion of described rotary sleeve is that a body (72) rear portion is a body of rod (71), the inboard of described body (72) has a circular step face and is fixed with spacer (6), the external diameter of the internal diameter of the described body of rod (71) and described stem (25) is complementary, and the described body of rod (71) has a through hole (73) and can expose to described air admission hole of small part (21) and described venthole (22);
On the step that forms between described stem (25) and the sleeve (24) successively socket be fixed with wave washer (4) and stator (5), described wave washer (4), stator (5) and spacer (6) are stuck between the step surface of the step of inlet suction port (2) and rotary sleeve (7) successively, are provided with rotary positioning mechanism between described stator (5) and the spacer (6).
2. rotating speed adjusting mechanism as claimed in claim 1 is characterized in that: described through hole (73) can expose whole described air admission hole (21) and described venthole (22) simultaneously, the marginal texture symmetry of described through hole (73), and the edge is a waveform.
3. rotating speed adjusting mechanism as claimed in claim 1, it is characterized in that: described rotary positioning mechanism is that six the groove A (51) that are equally spaced that have on upward relative with spacer (6) face of described stator (5) go up two axisymmetric projections in center (61) with respect to stator (5) that have on the face relative with described stator (5) with described spacer (6), and described projection (61) is complementary with described groove A (51) and can be fixed mutually in twos.
4. rotating speed adjusting mechanism as claimed in claim 1 is characterized in that: the stem (25) of described inlet suction port (2) is provided with groove B (23) and is socketed with little O type circle (3).
5. rotating speed adjusting mechanism as claimed in claim 3 is characterized in that: described groove A (51) can exchange with the position that described projection (61) is provided with.
6. as each described rotating speed regulating mechanism of claim 1-5, it is characterized in that: the face that described stator (5) is relative with described spacer (6) is processed through metal fever and is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201693692U CN201752884U (en) | 2010-04-22 | 2010-04-22 | Novel rotational speed regulating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201693692U CN201752884U (en) | 2010-04-22 | 2010-04-22 | Novel rotational speed regulating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201752884U true CN201752884U (en) | 2011-03-02 |
Family
ID=43620617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201693692U Expired - Lifetime CN201752884U (en) | 2010-04-22 | 2010-04-22 | Novel rotational speed regulating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201752884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248505A (en) * | 2011-06-27 | 2011-11-23 | 奇瑞汽车股份有限公司 | Pneumatic tool adapter capable of protecting threads and pneumatic hydraulic pulse wrench |
-
2010
- 2010-04-22 CN CN2010201693692U patent/CN201752884U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248505A (en) * | 2011-06-27 | 2011-11-23 | 奇瑞汽车股份有限公司 | Pneumatic tool adapter capable of protecting threads and pneumatic hydraulic pulse wrench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110302 Effective date of abandoning: 20120201 |