CN203061923U - Mechanical variable-speed engineering driller - Google Patents
Mechanical variable-speed engineering driller Download PDFInfo
- Publication number
- CN203061923U CN203061923U CN 201220755473 CN201220755473U CN203061923U CN 203061923 U CN203061923 U CN 203061923U CN 201220755473 CN201220755473 CN 201220755473 CN 201220755473 U CN201220755473 U CN 201220755473U CN 203061923 U CN203061923 U CN 203061923U
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- China
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- gear
- output shaft
- engineering driller
- speed
- moving gear
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- Expired - Fee Related
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Abstract
The utility model provides a mechanical variable-speed engineering driller and belongs to the technical field of electric tools. The mechanical variable-speed engineering driller solves the problem that an existing engineering driller is complex in internal mechanical variable-speed mechanism, not safe and the like. The mechanical variable-speed engineering driller comprises a head casing, a machine casing, a motor and an output shaft, a transmission shaft is arranged between the output shaft and a motor driving shaft, one first-stage transmission gear and two second-stage transmission gears in different sizes are arranged on the transmission shaft, the first-stage transmission gear is meshed with the driving shaft, a movable gear and a fixed gear which are different in sizes are arranged on the output shaft, and the movable gear and the fixed gear can be respectively meshed with the two second-stage transmission gears. The mechanical variable-speed engineering driller is further provided with a speed adjusting mechanism, the speed adjusting mechanism comprises a rotation pulling button and a pulling rod, the movable gear and the output shaft can be controlled by the pulling rod to be inserted with or separated from the fixed gear, and a locking mechanism is arranged between the movable gear and the output shaft. The mechanical variable-speed engineering driller changes speed by pulling the movable gear, the movable gear and the output shaft are locked through steel balls, and the mechanical variable-speed engineering driller is simple, convenient to use and safe.
Description
Technical field
The utility model belongs to the electric tool technical field, relates to a kind of engineering driller, particularly a kind of engineering driller of mechanical speed change.
Background technology
Along with improving constantly of living standards of the people, the house finishing is also more and more, and the wall boring hand-held engineerings that adopt are crept into row boring and sampling more in the decorating house process.
Traditional engineering is bored has only a kind of drilling speed mostly, because its drilling speed is single, need in use to use different engineerings to bore according to actual conditions, for example the machine rotational speed height that requirement is selected for use when boring aperture a bit, require the rotating speed of machine a little low when boring macropore, generally the client can not buy a high speed drill and a low speed brill again simultaneously, has brought very big inconvenience for people's life and work.
Existing market the hand-held engineering driller of some adjustable speeds has also appearred, but all be to adopt switch to come speed governing mostly, this speed-regulating function can not replace speed changing function; Also have plenty of the employing mechanical speed change, use gauge tap control interior size gear meshing to realize speed change, the back lacks corresponding locking mechanism but this class organization gear switches engagement, in the use, has certain tooth risk of taking off.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing hand-held engineering driller, and has proposed a kind of engineering driller of realizing speed-regulating function and possessing locking mechanism.
The purpose of this utility model can realize by following technical proposal: a kind of engineering driller of mechanical speed change, comprise head capsule, casing, motor and output shaft, output shaft and motor are separately positioned in head capsule and the casing, be provided with power transmission shaft between output shaft and the motor driving shaft, described power transmission shaft is provided with an one-level travelling gear and two secondary travelling gears that vary in size, one-level travelling gear and driving shaft engagement, output shaft is provided with two moving gears that vary in size and quiet gear, moving gear and quiet gear can mesh to drive output shaft work with above-mentioned two secondary travelling gears respectively, it is characterized in that, described engineering driller also includes speed adjusting gear, speed adjusting gear comprises rotation toggle and driving lever, one of driving lever is connected with the rotation toggle, the other end is inserted in the annular slot of offering on the above-mentioned moving gear, moving gear and output shaft circumferentially interlock and can the control lower edge of driving lever output shaft move back and forth realize with the grafting of quiet gear with separate, quiet gear and output shaft circumferentially flexibly connect, and are provided with locking mechanism between described moving gear and the output shaft.
Driving lever is arranged on the rotation toggle and departs from home position, when rotating the rotation toggle, stirring moving gear by driving lever slides along output shaft, when moving gear and the grafting of quiet gear, moving gear, quiet gear and output shaft three circumferentially link, corresponding secondary travelling gear engagement on quiet gear and the power transmission shaft, moving gear separates with corresponding secondary travelling gear.Backward rotation rotation toggle, moving gear separates with quiet gear, after treating that the moving gear slip puts in place, moving gear and quiet gear respectively with corresponding secondary travelling gear engagement, moving gear and output shaft circumferentially link, quiet gear dallies with respect to output shaft, after the moving gear motion puts in place, all can realize locking by locking mechanism.
In the engineering driller of above-mentioned a kind of mechanical speed change, described moving gear is provided with fixture block towards a side of quiet gear, and a quiet gear and moving gear side in opposite directions then is provided with the bayonet socket with above-mentioned fixture block corresponding matching.Fixture block can snap in the bayonet socket, realizes the circumferential interlock of moving gear and quiet gear.
In the engineering driller of above-mentioned a kind of mechanical speed change, the surface of described output shaft is axially arranged with the square key of protrusion, and the inner ring of moving gear offers the keyway corresponding with described square key, and square key is arranged in the keyway.
In the engineering driller of above-mentioned a kind of mechanical speed change, described locking mechanism comprises spring, steel ball and radially is opened in pin-and-hole on the output shaft, steel ball and spring are arranged in the pin-and-hole, one end of spring is connected with steel ball, the other end peaks at the pin-and-hole bottom and is in compressive state, the diameter of steel ball is greater than the aperture of pin-and-hole port, and the inner ring of above-mentioned moving gear is spaced apart to be provided with two recesses that are complementary with steel ball.Two duties of two corresponding moving gears of recess difference, after moving gear speed governing switching put in place, steel ball can snap in respectively in the corresponding recess, realizes the locking to moving gear.
Compared with prior art, the engineering driller of this mechanical speed change is stirred moving gear by operation rotation knob and carried out speed change, and is simple to operation.Realize locking by steel ball between moving gear and the output shaft, prevent that moving gear has improved security because vibrations separate with the secondary travelling gear in the use.
Description of drawings
Fig. 1 is the internal view of this engineering driller.
Fig. 2 is the structural representation of this engineering driller running part.
Fig. 3 is the internal view of this engineering driller depression angle.
Among the figure, 1, head capsule; 2, casing; 3, motor; 3a, driving shaft; 4, output shaft; 4a, square key; 4b, pin-and-hole; 5, middle cover; 6, driving lever; 7, power transmission shaft; 7a, one-level travelling gear; 7b, secondary travelling gear; 8, moving gear; 8a, Access Division; 8a1, draw-in groove; 8b, recess; 8c, fixture block; 9, steel ball; 10, spring; 11, rotation toggle; 12, attachment screw; 13, quiet gear; 13a, bayonet socket; 14, back-up ring.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Shown in Fig. 1～3, the engineering driller of this mechanical speed change comprises head capsule 1, casing 2, motor 3 and output shaft 4, link together by a middle cover 5 between head capsule 1 and the casing 2, motor 3 is arranged on casing 2 inside, the driving shaft 3a of motor 3 passes middle cover 5, output shaft 4 is arranged on head capsule 1 inside, the one end stretches out and is provided with drill bit from head capsule 1 front end, be provided with power transmission shaft 7 between the other end and the driving shaft 3a, power transmission shaft 7 is provided with an one-level travelling gear 7a and two secondary travelling gear 7b that vary in size, one-level travelling gear 7a and driving shaft 3a engagement, output shaft 4 be provided with two not of uniform size and can be respectively and above-mentioned two secondary travelling gear 7b moving gear 8 and the quiet gear 13 of corresponding engagement one by one.
One side of moving gear 8 is provided with Access Division 8a, offers an annular slot 8a1 on the 8a of Access Division, and opposite side is provided with the fixture block 8c that some circumferential intervals arrange, and quiet gear 13 offers bayonet socket 13a towards a side correspondence of moving gear 8, and fixture block 8c can be fastened in the bayonet socket 13a.The surface of output shaft 4 is axially arranged with the square key 4a of protrusion, and the inner ring of moving gear 8 offers the keyway corresponding with described square key 4a, and square key 4a is arranged in the keyway.
The inner ring of moving gear 8 is spaced apart to be provided with two groups of recess 8b, radially offer pin-and-hole 4b on the output shaft 4, be provided with steel ball 9 and spring 10 in the pin-and-hole 4b, one end of spring 10 is connected with steel ball 9, the other end peaks at pin-and-hole 4b bottom and is in compressive state, the diameter of steel ball 9 is greater than the aperture of pin-and-hole 4b port, and described steel ball 9 can be ejected pin-and-hole 4b in the elastic force effect lower part of spring 10 and snap in the above-mentioned recess 8b.
The outside portion of head capsule 1 is provided with a rotation toggle 11, rotation toggle 11 is rotationally connected with head capsule 1 by an attachment screw 12, head capsule 1 inside is provided with a driving lever 6, and one of driving lever 6 is connected with rotation toggle 11, and the other end is inserted in the annular slot 8a1 that offers on the above-mentioned moving gear 8.
During use, quiet gear 13 and less secondary travelling gear 7b engagement (as shown in Figure 1), fixture block 8c on the moving gear 8 snaps in the bayonet socket 13a on the quiet gear 13, steel ball 9 is stuck in the recess 8b on diagram right side, square key 4a on the output shaft 4 is arranged in the keyway on the moving gear 8, output shaft 4, moving gear 8 and quiet gear 13 threes circumferentially link, and the driving shaft 3a of motor 3 drives above-mentioned threes by power transmission shaft 7 and rotates synchronously, and this moment, engineering driller was with than slow-speed of revolution work.
When needing speed governing, operation rotation toggle 11 drives driving lever 6 and stirs moving gear 8 backward along output shaft 4, steel ball 9 stressed being pushed back to pin-and-hole 4b, moving gear 8 unlocks and moves backward along output shaft 4, and fixture block 8c extracts out in bayonet socket 13a, and moving gear 8 separates with quiet gear 13.After moving gear 8 motions put in place, steel ball 9 ejects again and snaps in the recess 8b in diagram left side, moving gear 8 and bigger secondary travelling gear 7b engagement, and moving gear 8 circumferentially links with output shaft 4, motor 3 drives moving gear 8 and output shaft 4 rotation works by power transmission shaft 7, and rotating speed accelerates.At this moment, quiet gear 13 still is in the state with less secondary travelling gear 7b engagement, and with respect to output shaft 4 idle running, the actual speed of output shaft 4 is determined by moving gear 8 rotating speeds under the drive of power transmission shaft 7.
For guaranteeing that steel ball 9 can accurately snap in the recess 8b, special tail end at output shaft 4 is provided with back-up ring 14, and to 8 position-limiting actions of moving gear, the spacing work of moving gear 8 opposite sides is finished by quiet gear 13.
Claims (4)
1. the engineering driller of a mechanical speed change, comprise head capsule (1), casing (2), motor (3) and output shaft (4), output shaft (4) and motor (3) are separately positioned in head capsule (1) and the casing (2), be provided with power transmission shaft (7) between output shaft (4) and motor (3) driving shaft (3a), described power transmission shaft (7) is provided with an one-level travelling gear (7a) and two secondary travelling gears (7b) that vary in size, one-level travelling gear (7a) and driving shaft (3a) engagement, output shaft (4) is provided with two moving gears that vary in size (8) and quiet gear (13), moving gear (8) can be worked to drive output shaft (4) with above-mentioned two secondary travelling gears (7b) engagement respectively with quiet gear (13), it is characterized in that, described engineering driller also includes speed adjusting gear, speed adjusting gear comprises rotation toggle (11) and driving lever (6), one of driving lever (6) is connected with rotation toggle (11), the other end is inserted in the annular slot of offering on the above-mentioned moving gear (8) (8a1), moving gear (8) and output shaft (4) circumferentially interlock and can the control lower edge of driving lever (6) output shaft (4) move back and forth realize with the grafting of quiet gear (13) with separate, quiet gear (13) circumferentially flexibly connects with output shaft (4), is provided with locking mechanism between described moving gear (8) and the output shaft (4).
2. the engineering driller of a kind of mechanical speed change according to claim 1, it is characterized in that, described moving gear (8) is provided with fixture block (8c) towards a side of quiet gear (13), and quiet gear (13) and moving gear (a 8) side in opposite directions then are provided with the bayonet socket (13a) with above-mentioned fixture block (8c) corresponding matching.
3. the engineering driller of a kind of mechanical speed change according to claim 1 and 2, it is characterized in that, the surface of described output shaft (4) is axially arranged with the square key (4a) of protrusion, and the inner ring of moving gear (8) offers the keyway corresponding with described square key (4a), and square key (4a) is arranged in the keyway.
4. the engineering driller of a kind of mechanical speed change according to claim 1 and 2, it is characterized in that, described locking mechanism comprises spring (10), steel ball (9) and radially is opened in pin-and-hole (4b) on the output shaft (4), steel ball (9) and spring (10) are arranged in the pin-and-hole (4b), one end of spring (10) is connected with steel ball (9), the other end peaks at pin-and-hole (4b) bottom and is in compressive state, the diameter of steel ball (9) is greater than the aperture of pin-and-hole (4b) port, and the inner ring of above-mentioned moving gear (8) is spaced apart to be provided with two recesses (8b) that are complementary with steel ball (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755473 CN203061923U (en) | 2012-12-31 | 2012-12-31 | Mechanical variable-speed engineering driller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755473 CN203061923U (en) | 2012-12-31 | 2012-12-31 | Mechanical variable-speed engineering driller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203061923U true CN203061923U (en) | 2013-07-17 |
Family
ID=48760749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220755473 Expired - Fee Related CN203061923U (en) | 2012-12-31 | 2012-12-31 | Mechanical variable-speed engineering driller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203061923U (en) |
-
2012
- 2012-12-31 CN CN 201220755473 patent/CN203061923U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20201231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |