CN207814354U - A kind of electric tool gearbox speed switching device - Google Patents
A kind of electric tool gearbox speed switching device Download PDFInfo
- Publication number
- CN207814354U CN207814354U CN201721691840.2U CN201721691840U CN207814354U CN 207814354 U CN207814354 U CN 207814354U CN 201721691840 U CN201721691840 U CN 201721691840U CN 207814354 U CN207814354 U CN 207814354U
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- Prior art keywords
- gear
- speed switching
- drive shaft
- electric tool
- switching device
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- 238000005192 partition Methods 0.000 abstract description 2
- 238000009960 carding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 1
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Abstract
The utility model belongs to drive technology field, a kind of especially electric tool gearbox speed switching device, including tooth tank shell, changeover module, drive shaft, planetary gear set, internal gear, drive disk and PTO drive disk, the changeover module is for driving drive shaft to move up and down, described drive shaft one end is provided with external gear, the drive disk is provided with inner gear ring, and the external gear is engaged with the planetary gear set or the inner gear ring respectively.Since the speed switching of the utility model is without using quick-wear parts such as speed change gear ring, partitions, therefore, the structure of the utility model has the advantages that with long service life, in addition, since moving up and down for drive shaft can be realized by simple operations changeover module in the utility model, and then realize speed switching, also have the advantages that easy to operate.
Description
Technical field
The utility model belongs to drive technology field, especially a kind of electric tool gearbox speed switching device.
Background technology
Current drill type electric tool usually has several speed operating modes, thus generally has speed switching mechanism,
To realize the output of different rotating speeds.
More typical, the speed switching mechanism of some electric tools realizes that structure is usually speed change by speed change gear ring
Gear ring coordinates with spacing washer clutch, and when speed change gear ring is engaged with spacing washer, rotation is restricted, to realize that low speed is defeated
Go out, speed change gear ring is free to rotate to realize speedy carding process when being detached with spacing washer.
However, above-mentioned speed switching mechanism, in use, due to speed change gear ring and the frequent clutch of spacing washer
Operation, the easy impact wear in engaging portion are especially operated in high torque, or in operating when progress speed switching, easily lead to part knot
Structure bursts apart failure, influences service life and use reliability.
Invention content
The main purpose of the utility model is that a kind of electric tool gearbox speed switching device is proposed, with structure
Simply, advantage with long service life.
A kind of electric tool gearbox speed switching device, including tooth tank shell, changeover module, drive shaft, planetary gear
Group, internal gear, drive disk and PTO drive disk, the changeover module is for driving drive shaft to move up and down, the drive shaft one
End is provided with external gear, and the drive disk is provided with inner gear ring, the external gear respectively with the planetary gear set or described
Inner gear ring engages.
The changeover module includes that switching ring, gear lever and switch plate, the switching ring set are located at outside the tooth tank shell
Week, the propeller shaft sleeve are connected to the switch plate, and the switch plate is peripherally disposed first groove, the switching ring week
To second groove is provided with, the gear lever is set to the second groove, and is contacted with the first groove.
The gear lever includes the straightway of arc section and the arc section both ends.
A wherein straightway for the gear lever is set to the first groove, and another straightway is set to second ditch
Slot.
The planetary gear set includes planetary gear, and the external gear of the drive shaft is engaged with the planetary gear.
The PTO drive disk is provided with pin, the drive disk be provided with the matched location hole of the pin, it is described
Pin is inserted into the location hole.
The utility model advantageous effect：When the utility model is used, drive shaft is made to move up and down by changeover module, due to
The end set of drive shaft has external gear, when the external gear of drive shaft is engaged with planetary gear set, drive shaft, planetary gear set and
Internal gear three works together, realizes the deceleration output of gear-box；The external gear of drive shaft is engaged with the inner gear ring of drive disk
When, realize the speedy carding process of gear-box；Since the speed switching of the utility model is without using rapid wears zero such as speed change gear ring, partitions
Part, therefore, the structure of the utility model have the advantages that it is with long service life, in addition, since the utility model passes through simple operations
Moving up and down for drive shaft can be realized in changeover module, and then realizes speed switching, also has the advantages that easy to operate.
Description of the drawings
Fig. 1 is the decomposition diagram of the utility model.
Fig. 2 is the structural schematic diagram that the utility model is in output of slowing down.
Fig. 3 is the structural schematic diagram that the utility model is in speedy carding process.
Fig. 1 to Fig. 3 includes：1 --- tooth tank shell, 2 --- changeover module, 21 --- switching ring, 211 --- the second ditch
Slot, 22 --- gear lever, 221 --- arc section, 222 --- straightway, 23 --- switch plate, 231 --- first groove,
3 --- drive shaft, 31 --- external gear, 4 --- planetary gear set, 5 --- internal gear, 6 --- drive disk, 61 --- internal gear
Circle, 62 --- location hole, 7 --- PTO drive disk, 71 --- pin.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
A kind of electric tool gearbox speed switching device, including tooth tank shell 1, changeover module 2, drive shaft 3, planet tooth
Wheel group 4, internal gear 5, drive disk 6 and PTO drive disk 7, changeover module 2 is for driving drive shaft 3 to move up and down, changeover module 2
Including switching ring 21, gear lever 22 and switch plate 23, switching ring 21 is set in 1 periphery of tooth tank shell, and drive shaft 3 is socketed on switching
Disk 23, switch plate 23 is peripherally disposed to have first groove 231, switching ring 21 to be circumferentially provided with second groove 211, gear lever
22 are set to second groove 211, and are contacted with first groove 231, and 3 one end of drive shaft is provided with external gear 31, and drive disk 6 is set
It is equipped with inner gear ring 61, external gear 31 is engaged with planetary gear set 4 or inner gear ring 61 respectively.
Preferably, gear lever 22 includes the straightway 222 at 221 both ends of arc section 221 and arc section.
Preferably, a wherein straightway 222 for gear lever 22 is set to first groove 231, and another straightway 222 is set to
Second groove 211.
Planetary gear set 4 includes four planetary gears, and each two planetary gear partners, the external gear 31 of drive shaft 3
It is engaged with four planetary gears.
PTO drive disk 7 is provided with pin 71, and drive disk 6 is provided with to be inserted with 71 matched location hole 62 of pin, pin 71
Enter location hole 62.
Operation principle：When work, rotation switching ring 21 switches the second groove 211 on ring 21 and drives gear lever 22 axial
It is mobile, it is located at due to 22 other end of gear lever in the first groove 231 of switch plate 23, gear lever 22 drives switch plate 23 and driving
Axis 3 is axially moveable, as shown in Fig. 2, when the external gear 31 of drive shaft 3 is engaged with planetary gear set 4, drive shaft 3, planetary gear
Group 4 and 5 three of internal gear work together, realize the deceleration output of gear-box；As shown in figure 3, drive shaft 3 continues to move up,
When the external gear 31 of drive shaft 3 is engaged with the inner gear ring 61 of drive disk 6, the speedy carding process of gear-box is realized.
Detailed description above is illustrated for one of the utility model possible embodiments, and only embodiment is not to limit
The scope of the claims of the utility model processed, it is all without departing from equivalence enforcement or the change for it of the utility model skill spirit, it should all wrap
Contained in the scope of protection of the utility model.
Claims (6)
1. a kind of electric tool gearbox speed switching device, including tooth tank shell, changeover module, drive shaft, planetary gear set,
Internal gear, drive disk and PTO drive disk, the changeover module is for driving drive shaft to move up and down, it is characterised in that：It is described
Drive shaft one end is provided with external gear, and the drive disk is provided with inner gear ring, the external gear respectively with the planetary gear
Group or inner gear ring engagement.
2. electric tool gearbox speed switching device according to claim 1, it is characterised in that：The changeover module packet
Switching ring, gear lever and switch plate are included, the switching ring set is located at tooth tank shell periphery, and the propeller shaft sleeve is connected to described
Switch plate, the switch plate is peripherally disposed to have first groove, the switching ring to be circumferentially provided with second groove, the change
Fast bar is set to the second groove, and is contacted with the first groove.
3. electric tool gearbox speed switching device according to claim 2, it is characterised in that：The gear lever includes
The straightway of arc section and the arc section both ends.
4. electric tool gearbox speed switching device according to claim 3, it is characterised in that：The gear lever its
In a straightway be set to the first groove, another straightway is set to the second groove.
5. electric tool gearbox speed switching device according to claim 1, it is characterised in that：The planetary gear set
Including planetary gear, the external gear of the drive shaft is engaged with the planetary gear.
6. electric tool gearbox speed switching device according to claim 1, it is characterised in that：The PTO drive disk
It is provided with pin, the drive disk is provided with is inserted into the location hole with the matched location hole of the pin, the pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721691840.2U CN207814354U (en) | 2017-12-07 | 2017-12-07 | A kind of electric tool gearbox speed switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721691840.2U CN207814354U (en) | 2017-12-07 | 2017-12-07 | A kind of electric tool gearbox speed switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814354U true CN207814354U (en) | 2018-09-04 |
Family
ID=63335371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721691840.2U Active CN207814354U (en) | 2017-12-07 | 2017-12-07 | A kind of electric tool gearbox speed switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013509A (en) * | 2022-06-17 | 2022-09-06 | 宿迁市泰宇电器有限公司 | Multifunctional electric tool speed change gear box |
-
2017
- 2017-12-07 CN CN201721691840.2U patent/CN207814354U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013509A (en) * | 2022-06-17 | 2022-09-06 | 宿迁市泰宇电器有限公司 | Multifunctional electric tool speed change gear box |
| CN115013509B (en) * | 2022-06-17 | 2023-12-01 | 宿迁市泰宇电器有限公司 | Multifunctional electric tool speed change gear box |
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