CN2189021Y - Driven mechanism for hand held drilling machine - Google Patents
Driven mechanism for hand held drilling machine Download PDFInfo
- Publication number
- CN2189021Y CN2189021Y CN 94241690 CN94241690U CN2189021Y CN 2189021 Y CN2189021 Y CN 2189021Y CN 94241690 CN94241690 CN 94241690 CN 94241690 U CN94241690 U CN 94241690U CN 2189021 Y CN2189021 Y CN 2189021Y
- Authority
- CN
- China
- Prior art keywords
- gear
- rotating shaft
- mandrel
- box
- division board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Drilling And Boring (AREA)
Abstract
The utility model discloses a transmission mechanism for a hand impact electric driller, comprising an electric machine, a rotating shaft of the electric machine, a gear, and a mandrel arranged on the gear; the rotating shaft drives the gear. The front end of the electric machine is provided with a partition plate whose front end is connected with a gear box. A bearing for positioning is arranged between the rotating shaft and the partition plate. The rotating shaft which passes through the partition plate extends into the gear box. A lining for positioning is arranged between the mandrel and the gear box. The mandrel which passes through the gear box is connected with a drill chuck. The utility model has the advantages of high precision, low noise, and long service life.
Description
The utility model relates to a kind of electric tool.
Hand-held electric impact drill of the prior art, the motor front end generally all is to rely on four root posts of the division board of its front end to fix the location, and its positioning accuracy is low, makes the stator of motor and the axiality between the rotor poor easily, influence the electric drill performance, even the iron phenomenon occurs wiping; And mandrel generally all is directly to be positioned on the shell by lining, but shell is generally made by engineering plastics, because the injection speed of plastics in forming process, die cavity temperature, pressure or the like are difficult to control, cause plastic deformation easily, thereby influence dimensional accuracy, making the increase of beating of mandrel end has increased noise, has reduced the service life of percussion drill.
The purpose of this utility model is: the transmission mechanism that the hand-held electric impact drill that a kind of precision height, noise are low, the life-span is long is provided.
The technical solution of the utility model is: a kind of transmission mechanism of hand-held electric impact drill, comprise motor, motor rotating shaft, rotating shaft driven gear, be fixed on the mandrel on the gear, the front end of described motor is provided with division board, the front end of division board is connected with gear-box; Be provided with the bearing location between described rotating shaft and the division board, rotating shaft is passed division board and is stretched in the gear-box; Be provided with the lining location between described mandrel and the gear-box, mandrel passes gear-box and is connected with drill chuck.
The utility model has the advantages that:
1. because motor front end of the present utility model, axially rely on the plane of division board and motor front end the circumferential end surfaces location, radially rely on periphery and motor front end inner hole surface location on the division board, guaranteed the axiality between motor stator and the rotor, thereby improved precision, reduced noise.
2. because division board front end of the present utility model is connected with gear-box, transmission mechanism is located in the gear-box, mandrel relies on lining to be positioned on the gear-box, thereby avoided original mandrel directly to be positioned at shortcoming on the plastic casing, having reduced the mandrel end beats, reduce noise, prolonged the service life of percussion drill.
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model.
Wherein: 1. motor; 2. rotating shaft; 3. gear; 4. mandrel; 5. division board; 6. gear-box; 7. bearing; 8. lining; 9. drill chuck.
Embodiment: as shown in Figure 1, a kind of transmission mechanism of hand-held electric impact drill, comprise motor 1, motor 1 rotating shaft 2, rotating shaft 2 driven gears 3, be fixed on the mandrel 4 on the gear 3, the front end of described motor 1 is provided with division board 5, the front end of division board 5 is connected with gear-box 6; Be provided with bearing 7 location between described rotating shaft 2 and the division board 5, rotating shaft 2 is passed division board 5 and is stretched in the gear-box 6; Be provided with lining 8 location between described mandrel 4 and the gear-box 6, mandrel 4 passes gear-box 6 and is connected with drill chuck 9.Because motor 1 front end of the present utility model, axially rely on the plane of division board 5 and the circumferential end surfaces location of motor 1 front end, radially rely on periphery and motor 1 front end inner hole surface location on the division board 5, guarantee the axiality between motor 1 stator and the rotor, thereby improved precision, reduced noise.Because division board 5 front ends of the present utility model are connected with gear-box 6, transmission mechanism is located in the gear-box 6, mandrel 4 relies on lining 8 to be positioned on the gear-box 6, thereby avoided original mandrel 4 directly to be positioned at shortcoming on the plastic casing, having reduced mandrel 4 ends beats, reduce noise, prolonged the service life of percussion drill.
Claims (1)
1, a kind of transmission mechanism of hand-held electric impact drill, comprise motor 1, motor 1 rotating shaft 2, rotating shaft 2 driven gears 3, be fixed on the mandrel 4 on the gear 3, it is characterized in that: the front end of described motor 1 is provided with division board 5, the front end of division board 5 is connected with gear-box 6; Be provided with bearing 7 location between described rotating shaft 2 and the division board 5, rotating shaft 2 is passed division board 5 and is stretched in the gear-box 6; Be provided with lining 8 location between described mandrel 4 and the gear-box 6, mandrel 4 passes gear-box 6 and is connected with drill chuck 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241690 CN2189021Y (en) | 1994-04-15 | 1994-04-15 | Driven mechanism for hand held drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241690 CN2189021Y (en) | 1994-04-15 | 1994-04-15 | Driven mechanism for hand held drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2189021Y true CN2189021Y (en) | 1995-02-08 |
Family
ID=33848412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94241690 Expired - Fee Related CN2189021Y (en) | 1994-04-15 | 1994-04-15 | Driven mechanism for hand held drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2189021Y (en) |
-
1994
- 1994-04-15 CN CN 94241690 patent/CN2189021Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |