CN202684876U - Novel gear case for electric tool - Google Patents
Novel gear case for electric tool Download PDFInfo
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- CN202684876U CN202684876U CN 201220203377 CN201220203377U CN202684876U CN 202684876 U CN202684876 U CN 202684876U CN 201220203377 CN201220203377 CN 201220203377 CN 201220203377 U CN201220203377 U CN 201220203377U CN 202684876 U CN202684876 U CN 202684876U
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- gear
- trip stop
- electric tool
- output
- trip
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Abstract
The utility model relates to the field of electric tools, in particular to a novel gear case for an electric tool. The gear case is characterized in that the conventional transmission mechanism that an internal gear axial trip stop mechanism and a planetary transmission frame drive an output shaft is replaced with an output transmission mechanism that a side trip stop mechanism and an internal gear drive the output shaft. The gear case comprises a gear case front shell, a gear case rear shell, a trip stop mechanism and an output transmission mechanism; the trip stop mechanism comprises a trip stop elastic sheet, a trip stop plate and pin rollers; the pin rollers slide on the outer circumference of the trip stop plate and penetrate through positioning holes in the gear case front shell to be pressed against the trip stop elastic sheet; the output transmission mechanism consists of the output shaft, an output internal gear and transmission gear sets; the output shaft is directly connected with the output internal gear; and the transmission gear sets are meshed with an internal gear groove of the output internal gear. Compared with the conventional gear case for the electric tool, the gear case has the advantages that the whole length is reduced under the condition of the same outer diameter, the output torsion is large at the same transmission ratio, and the gear case is high in efficiency, convenient to produce and assemble and low in cost.
Description
Technical field
The utility model relates to the electric tool technical field, relates in particular to a kind of Novel electric tool gear-box.
Background technology
Electric tool is generally electric drill instrument, power hand tool or electric lock, unloads screw tool etc., and this kind electric tool is provided with gear-box, cooperates running with motor by the transmission mechanism of gear-box, and screw etc. is holed, locks, unloaded to object.
Fig. 1 is existing electric tool gearbox, this electric tool gearbox comprises tooth case shell 12, torsion mechanism, trip-stop mechanism and transmission mechanism, torsion mechanism comprises torsion lid 13, Compress Spring 14, adjust screw 15, torsion mechanism is rotatably connected in tooth case shell 12, trip-stop mechanism comprises internal gear 16, steel ball 17, steel ball pad 18, locating dowel 19 and retainer spring 20, be provided with the trip stop circle on the end face of internal gear 16, the trip stop circle is formed with a plurality of lug bosses 21, steel ball 17 is arranged in the first holding part 22 of tooth case shell 12, steel ball 17 1 ends rely on steel ball pad 18, one side pressure is against the trip stop circle, locating dowel 19 and retainer spring 20 are arranged at the second holding part 23 of tooth case shell 12, locating dowel 19 can only axially move under the active force of retainer spring 20, locating dowel 19 relies on the gear groove 28 of torsion lid 13, and transmission mechanism comprises and the integrated Gear Planet Transmission frame 24 of output shaft, transmission fluted disc 25, planetary gearsets 26 and motor gear 27.
During work, when Gear Planet Transmission frame 24 is subject to resistance, resistance passes to internal gear 16, internal gear 16 stressed rotations, when lug boss 21 effect of internal gear 16 trip stop circles to the power of steel ball 17 greater than 18 effects of steel ball pad during to the power of steel ball 17, produce trip stop, at this moment torsion lid 13 can be turned to different positions, so that the outputting torsion of regulating electric instrument gear-box.Since this electric tool gearbox adopts be traditional inner gear shaft to the transmission mechanism of trip-stop mechanism and the output of Gear Planet Transmission frame band moving axis, so complex structure, it is inconvenient to produce assembling, entire length is large, and outputting torsion is little.
In addition, patent announcement number has also disclosed the electric tool gearbox that has adopted above-mentioned trip-stop mechanism and transmission mechanism for the Chinese patent of " CN2693386 " and " CN201544203 ".So existing electric tool gearbox remains to be improved.
The utility model content
The purpose of this utility model is to provide for the deficiencies in the prior art that a kind of and existing electric tool gearbox compares that entire length reduces in the situation of same outer diameter as, outputting torsion is large during same gear ratios, efficient is higher, produce electric tool gearbox easy to assembly.
To achieve these goals, the technical scheme that adopts of the utility model is:
A kind of Novel electric tool gear-box, it comprises the gear-box fore shell, gear-box back cover and trip-stop mechanism, described trip-stop mechanism comprises the trip stop shell fragment, trip stop dish and roller, described gear-box fore shell and described gear-box back cover are by described trip stop shell fragment engagement connection, described roller slides on the periphery wall of described trip stop dish, and the locating hole that passes described gear-box fore shell is resisted against described trip stop shell fragment, be provided with the output transmission mechanism between described trip stop dish and the described gear-box fore shell, described output transmission mechanism is by output shaft, output inner gear and driving gear set consist of, described output shaft connects described output inner gear, and described driving gear set is meshed with the internal spline of described output inner gear.
In technique scheme, the periphery wall equal intervals of described trip stop dish is provided with a plurality of lug bosses, and the top of described trip stop dish is provided with the fixed axis for fixing described driving gear set.
In technique scheme, described trip stop shell fragment comprises be used to the clamping part that engages described gear-box fore shell and described gear-box back cover and the shell fragment section that leans with described roller.
In technique scheme, be provided with the input driver structure between described trip stop dish and the described gear-box back cover, described input driver structure comprises second layer fluted disc, planetary gearsets and motor gear, the centre bore that the gear part of described second layer fluted disc upper end is passed described trip stop dish is meshed with described driving gear set, described planetary gearsets is socketed on the axial region of described second layer fluted disc lower end, and described motor gear is meshed with described planetary gearsets.
In technique scheme, be provided with the internal spline that is meshed with described planetary gearsets on the inwall of described gear-box back cover.
In technique scheme, this electric tool gearbox also comprises torsion mechanism, and described torsion mechanism is socketed on described gear-box fore shell.
In technique scheme, described torsion mechanism comprises the first fastener, gear shell fragment, the second fastener, steel ball pad, steel ball, oilite bushing and torsion lid, described gear shell fragment is installed on the gear groove that described torsion covers end by described the first fastener, and described the second fastener, described steel ball pad, described steel ball and described oilite bushing are installed on respectively in the delivery outlet of described gear-box fore shell.
In technique scheme, described torsion regulates that two kinds of modes, the first are arranged is to be provided with the shelves post section that length increases progressively successively on the inwall of described torsion lid; The second is to be provided with internal thread part on the inwall of described torsion lid, and is furnished with the adjustment screw, and described adjustment turnbuckle is connected to the axially directed groove of described gear-box fore shell, and described adjustment screw is provided with the external thread part that matches with described threaded portion on the surface.
The utility model beneficial effect is: the output transmission mechanism that the utility model has adopted side trip-stop mechanism and internal gear to drive output shaft has substituted traditional inner gear shaft to the transmission mechanism of trip-stop mechanism and the output of Gear Planet Transmission frame band moving axis, electric tool gearbox of the present utility model is compared with existing electric tool gearbox, entire length reduces in the situation of same outer diameter as, outputting torsion is large during same gear ratios, efficient is higher, it is more convenient to produce assembling, and cost is lower.
Description of drawings
Fig. 1 is the partial sectional view of existing electric tool gearbox.
Fig. 2 is the decomposing schematic representation of embodiment one of the present utility model.
Fig. 3 is the half sectional view of embodiment one of the present utility model.
Fig. 4 is the decomposing schematic representation of embodiment two of the present utility model.
Fig. 5 is the half sectional view of embodiment two of the present utility model.
Fig. 6 is the partial structurtes schematic diagram of embodiment one of the present utility model and embodiment two.
Fig. 7 is the structural representation of many grades of torsion lid of the present utility model.
Fig. 8 is the structural representation of six grades of torsion lid of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment one
A kind of novel electric tool gearbox of present embodiment is for the outputting torsion of adjusting electric tool.As shown in Figures 2 and 3, it comprises gear-box fore shell 1, gear-box back cover 2, trip-stop mechanism 3, output transmission mechanism 4, input driver structure 5 and torsion mechanism 6.
Such as Fig. 2 and shown in Figure 7, this torsion mechanism 6 is socketed on gear-box fore shell 1, torsion mechanism 6 comprises the first fastener 61, gear shell fragment 62, the second fastener 63, steel ball pad 64, steel ball 65, oilite bushing 66 and torsion lid 67, the first fastener 61 and the second fastener 63 are C type clasp, the first fastener 61 is installed on respectively in the delivery outlet of gear-box fore shell 1 by with the delivery outlet snapping of gear-box fore shell 1 gear shell fragment 62 being installed on gear groove 671, the second fasteners 63, steel ball pad 64, steel ball 65 and the oilite bushing 66 that torsion covers 67 upper ends.
Wherein, be provided with internal thread part 673 on the inwall of the torsion lid 67 of present embodiment, present embodiment describes the utility model with the electric tool gearbox of gear more than, and torsion lid 67 is preferably many grades of torsion lids, and many grades of torsion cover end and are provided with a plurality of gear grooves 671.In order to be connected with torsion lid 67, this torsion mechanism 6 also comprises adjusts screw 68, adjust the axially directed groove that screw 68 is socketed on gear-box fore shell 1, be provided with the external thread part 681 that matches with internal thread part 673 on the periphery wall of adjustment screw 68, adjustment screw 68 moves along the axial direction of gear-box fore shell 1.Need to prove that torsion lid 67 can also be selected the torsion lid 67 with internal thread part 673 of other gears, non-present embodiment is limited.
As shown in Figures 2 and 3, as improvement of the present utility model, be provided with output transmission mechanism 4 between gear-box fore shell 1 and the trip-stop mechanism 3, output transmission mechanism 4 is by output shaft 41, output inner gear 42 and driving gear set 43 consist of, output shaft 41 connects output inner gear 42, driving gear set 43 is meshed with the internal spline of output inner gear 42, driving gear set 43 is connected in trip-stop mechanism 3 simultaneously, this output transmission mechanism 4 has adopted output inner gear 42 to drive output shaft 41 outputting torsions, compare with existing electric tool gearbox, outputting torsion is larger during same gear ratios, export structure is simple simultaneously, causes the output length of this electric tool gearbox also to reduce.
Such as Fig. 2, Fig. 3 and shown in Figure 6, as further improvement of the utility model, trip-stop mechanism 3 comprises trip stop shell fragment 31, trip stop dish 32 and roller 33, the adjustment screw 68 of torsion mechanism 6 is crimped on the trip stop shell fragment 31, trip stop shell fragment 31 is made by the material with favorable elasticity, such as metal clips etc., concrete, trip stop shell fragment 31 comprise clamping part 311 and with shell fragment section 312, the clamping part 311 of trip stop shell fragment 31 is with gear-box fore shell 1 and 2 engagings of gear-box back cover, wherein, roller 33 quantity of present embodiment are better three, and roller 33 is slidingly connected to the periphery wall of trip stop dish 32, and the locating hole 11 that passes gear-box fore shell 1 is resisted against the shell fragment section 312 of trip stop shell fragment 31, certainly, roller 33 also can replace to other equivalent assemblies, and non-present embodiment is limited.
Wherein, the periphery wall equal intervals of trip stop dish 32 is provided with a plurality of lug bosses 321 that cooperate trip stop with roller 33, and the top of trip stop dish 32 is provided with the fixed axis 322 for fixed conveyor gear train 43.Trip-stop mechanism 3 of the present utility model has adopted the from the side mode of trip stop, with existing electric tool gearbox in the situation of same outer diameter as, electric tool gearbox entire length of the present utility model has reduced, structure is simpler.
As shown in Figures 2 and 3, be provided with input driver structure 5 between trip stop dish 32 and the gear-box back cover 2, input driver structure 5 comprises second layer fluted disc 51, planetary gearsets 52 and motor gear 53, the centre bore that the gear part 511 of second layer fluted disc 51 upper ends is passed trip stop dish 32 is meshed with driving gear set 52, planetary gearsets 52 is socketed on the axial region 512 of second layer fluted disc 51 lower ends, and motor gear 53 is meshed with planetary gearsets 52.
Be provided with the internal spline that is meshed with planetary gearsets 52 on the inwall of gear-box back cover 2, gear-box back cover 2 is fixedly connected with motor 9 by fixture 8, and fixture 8 is preferably the motor screw, and motor pad 7 also is installed on the fixture 8.
The course of work of the electric tool gearbox of present embodiment is:
During normal operation, motor 9 drives all parts in input driver structure 5 and the output transmission mechanism 4, transferring power is to output shaft 41, by output shaft 41 outputting torsions to machining tools such as electric drill or electric screwdrivers, simultaneously, the pressure that ball 33 is subject to trip stop shell fragment 31 is pressed on the periphery wall of trip stop dish 32, and trip stop dish 32 can not rotate because of the effect of lug boss 321; When output shaft 41 is subject to extraneous resistance, pass to trip stop dish 32 by output inner gear 42, if trip stop dish 32 lug boss 321 effects this moment to the power of ball 33 greater than the power of trip stop shell fragment 31 effects to ball 33, lug boss 321 slips over ball 33, produce trip stop, the simultaneously adjusting of the outputting torsion of each gear is to drive adjustment screw 68 when covering 67 rotation by torsion to do downward moving axially, adjusting screw 68 this moment, to be pressed in fulcrum and the ball 33 of trip stop shell fragment 31 more approaching, make the lug boss 321 of trip stop dish 32 will slip over the power that ball 33 need to be larger, the torsion of each gear is progressively strengthened.
Embodiment two
A kind of novel electric tool gearbox of present embodiment, such as Fig. 4, Fig. 5 and shown in Figure 8, it trip-stop mechanism that comprises 3, input mechanism 5 and output mechanism 4 are identical with structure and the operation principle of above-described embodiment one, do not repeat them here, its difference is: present embodiment does not need to use adjustment screw 68, the interior wall construction of torsion lid 67 changes column structure into by the helical structure among the embodiment one, is provided with the shelves post section 672 that some length increase progressively successively on the inwall of this torsion lid 67.
Present embodiment describes the utility model with the electric tool gearbox of six gears.This torsion lid 67 is preferably six grades of torsion lids, is provided with three groups of shelves post sections 672 on the inwall of these six grades of torsion lids, and every group of 672, six grades of torsion of shelves post section that have six length to increase progressively successively cover end and are provided with six gear grooves.Need to prove that torsion lid 67 also can be selected the torsion lid 67 with grade post section 672 of other gears, the quantity that only needs to change shelves post section 672 and gear groove 671 just can change gear, is limited so this torsion covers 67 non-present embodiments.
The course of work of the electric tool gearbox of present embodiment is:
When output shaft 41 is subject to extraneous resistance, pass to trip stop dish 32 by output inner gear 42, if trip stop dish 32 lug boss 321 effects this moment to the power of ball 33 greater than the power of trip stop shell fragment 31 effects to ball 33, lug boss 321 slips over ball 33, produce trip stop, the simultaneously adjusting of the outputting torsion of six gears is the shelves post sections 672 that drive inwall when covering 67 rotation by torsion, the shelves post section 672 of different length is crimped on respectively trip stop shell fragment 31 successively, if it is more approaching that shelves post section 672 is pressed in fulcrum and the ball 33 of trip stop shell fragment 31, the lug boss 321 of trip stop dish 32 will slip over 33 larger power of needs of ball so, and the torsion of six gears is progressively strengthened.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection domain; although with reference to preferred embodiment the utility model has been done to explain; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (10)
1. novel electric tool gearbox, comprise gear-box fore shell (1), gear-box back cover (2) and trip-stop mechanism (3), it is characterized in that: described trip-stop mechanism (3) comprises trip stop shell fragment (31), trip stop dish (32) and roller (33), described gear-box fore shell (1) and described gear-box back cover (2) are by described trip stop shell fragment (31) engagement connection, described roller (33) slides on the periphery wall of described trip stop dish (32), and the locating hole (11) that passes described gear-box fore shell (1) is resisted against described trip stop shell fragment (31), be provided with output transmission mechanism (4) between described trip stop dish (32) and the described gear-box fore shell (1), described output transmission mechanism (4) is by output shaft (41), output inner gear (42) and driving gear set (43) consist of, described output shaft (41) connects described output inner gear (42), and described driving gear set (43) is meshed with the internal spline of described output inner gear (42).
2. a kind of novel electric tool gearbox according to claim 1, it is characterized in that: the periphery wall equal intervals of described trip stop dish (32) is provided with a plurality of lug bosses (321), and the top of described trip stop dish (32) is provided with the fixed axis (322) for fixing described driving gear set (43).
3. a kind of novel electric tool gearbox according to claim 1 is characterized in that: described trip stop shell fragment (31) comprises be used to the clamping part (311) that engages described gear-box fore shell (1) and described gear-box back cover (2) and the shell fragment section (312) that leans with described roller (33).
4. a kind of novel electric tool gearbox according to claim 1, it is characterized in that: be provided with input driver structure (5) between described trip stop dish (32) and the described gear-box back cover (2), described input driver structure (5) comprises second layer fluted disc (51), planetary gearsets (52) and motor gear (53), the centre bore that the gear part (511) of described second layer fluted disc (51) upper end is passed described trip stop dish (32) is meshed with described driving gear set (52), described planetary gearsets (52) is socketed on the axial region (512) of described second layer fluted disc (51) lower end, and described motor gear (53) is meshed with described planetary gearsets (52).
5. a kind of novel electric tool gearbox according to claim 4 is characterized in that: be provided with the internal spline that is meshed with described planetary gearsets (52) on the inwall of described gear-box back cover (2).
6. the described a kind of novel electric tool gearbox of any one in 5 according to claim 1, it is characterized in that: this electric tool gearbox also comprises torsion mechanism (6), and described torsion mechanism (6) is socketed on described gear-box fore shell (1).
7. a kind of novel electric tool gearbox according to claim 6, it is characterized in that: described torsion mechanism (6) comprises the first fastener (61), gear shell fragment (62), the second fastener (63), steel ball pad (64), steel ball (65), oilite bushing (66) and torsion lid (67), described gear shell fragment (62) is installed on the gear groove (671) that described torsion covers (67) upper end, described the second fastener (63) by described the first fastener (61), described steel ball pad (64), described steel ball (65) and described oilite bushing (66) are installed on respectively in the delivery outlet of described gear-box fore shell (1).
8. a kind of novel electric tool gearbox according to claim 7 is characterized in that: be provided with the shelves post section (672) that length increases progressively successively on the inwall of described torsion lid (67).
9. a kind of novel electric tool gearbox according to claim 7 is characterized in that: be provided with internal thread part (673) on the inwall of described torsion lid (67)
10. a kind of novel electric tool gearbox according to claim 9, it is characterized in that: described torsion mechanism (6) also comprises adjusts screw (68), described adjustment screw (68) is socketed on the axially directed groove of described gear-box fore shell (1), is provided with the external thread part (681) that matches with described internal thread part (673) on the periphery wall of described adjustment screw (68).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220203377 CN202684876U (en) | 2012-05-02 | 2012-05-02 | Novel gear case for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220203377 CN202684876U (en) | 2012-05-02 | 2012-05-02 | Novel gear case for electric tool |
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| Publication Number | Publication Date |
|---|---|
| CN202684876U true CN202684876U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220203377 Expired - Fee Related CN202684876U (en) | 2012-05-02 | 2012-05-02 | Novel gear case for electric tool |
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| CN (1) | CN202684876U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285075A (en) * | 2013-05-08 | 2015-01-14 | 谐波传动系统有限公司 | Flexible outer teeth gear, wave gear device, and fastening method for flexible outer teeth gear |
| CN111550547A (en) * | 2020-04-23 | 2020-08-18 | 深圳市大科电机有限公司 | Bidirectional high-speed driving assembly |
| 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 |
-
2012
- 2012-05-02 CN CN 201220203377 patent/CN202684876U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285075A (en) * | 2013-05-08 | 2015-01-14 | 谐波传动系统有限公司 | Flexible outer teeth gear, wave gear device, and fastening method for flexible outer teeth gear |
| CN111550547A (en) * | 2020-04-23 | 2020-08-18 | 深圳市大科电机有限公司 | Bidirectional high-speed driving assembly |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130502 |