CN203156714U - Impacting switching structure of electric tool gear box - Google Patents
Impacting switching structure of electric tool gear box Download PDFInfo
- Publication number
- CN203156714U CN203156714U CN 201320045866 CN201320045866U CN203156714U CN 203156714 U CN203156714 U CN 203156714U CN 201320045866 CN201320045866 CN 201320045866 CN 201320045866 U CN201320045866 U CN 201320045866U CN 203156714 U CN203156714 U CN 203156714U
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- impact
- switching
- electric tool
- impacting
- axle bed
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Abstract
The utility mode discloses an impacting switching structure of an electric tool gear box. The impacting switching structure of the electric tool gear box comprises a driving shaft seat, an impacting block, a switching ring and at least two rolling balls, wherein at least two through holes are formed in the outer side of the driving shaft seat; the impacting block is installed in a cavity of the driving shaft seat, and at least two grooves are formed in the outer side of the impacting block; the switching ring can axially move and is sleeved on the outer side of the driving shaft seat in a rotating mode, and a protruding part which makes contact with the outer side of the driving shaft seat is formed in the inner wall of the switching ring; the rolling balls are installed in the corresponding through holes and located between the driving shaft seat and the switching ring, in a non-impacting state, the rolling balls abut against the protruding part and are clamped in the corresponding grooves in a torsion resistant mode, and in an impacting state, the rolling balls are separated from the corresponding grooves and located in a gap between the driving shaft seat and the switching ring. Under the condition that the length of the gear box is not increased, the switching ring is axially moved to make the rolling balls locate at different positions, switching of an impacting function and a non-impacting function is achieved, the structure is simple, and switching is smooth.
Description
Technical field
The utility model relates to the electric tool technical field, relates in particular to a kind of impact switching construction of drill type electric tool gear-box.
Background technology
Existing drill type electric tool has several mode of operations usually, and these several mode of operations are that electric drill, electric screw are criticized respectively, percussion drill and impact wrench.The drill type electric tool gear-box generally has beater mechanism, this beater mechanism comprises initiatively impact block and passive impact block, initiatively impact block is driven by the power transmission shaft rotation of gear reduction, passive impact block is connected in working shaft, passive impact block can be driven in rotation with the engagement of active impact block, wherein, initiatively impact block selectively breaks away from engagement with passive impact block when the suffered load of working shaft increases to particular value, and then under the rotation of power transmission shaft drives, mesh again with passive impact block again, thereby on direction of rotation, working shaft is imposed intermittent impact.In addition, drill type electric tool gear-box tool also is provided with the impact switching mechanism that matches with beater mechanism, the drill mode that this impact switching mechanism can stop percussion action that drill type electric tool is limited in not impact is even initiatively impact block is meshed with passive impact block and relative rotation does not take place.Yet there is following shortcoming in the impact switching mechanism of existing electric tool gear-box: 1, complex structure; 2, switching has some setbacks, and has reduced operating efficiency; 3, influence the length of gear-box.
The utility model content
The purpose of this utility model is to provide at the deficiencies in the prior art a kind of simple in structure, impact switching construction of switching smooth and easy, as not increase gear-box length electric tool gear-box.
The purpose of this utility model realizes by following technical measures: a kind of impact switching construction of electric tool gear-box, and this structure comprises: a transmission axle bed, the outside of described transmission axle bed offers at least two through holes; One impact block, described impact block are installed in the cavity of described transmission axle bed, and its outside offers at least two grooves; All ring changes, described switching ring can move axially and be sheathed on rotationally the outside of described transmission axle bed, forms on its inwall and the contacted protuberance in the outside of described transmission axle bed; And at least two balls, described ball is installed on corresponding described through hole and between described transmission axle bed and described switching ring, described ball is replaced mutually with described protuberance under non-impact conditions and antitorque is connected in corresponding described groove, and described ball breaks away from corresponding described groove and is in the gap between described transmission axle bed and the described switching ring under impact conditions.
Furthermore, in the technical scheme of the impact switching construction of above-mentioned electric tool gear-box, described groove is arranged at the exterior bottom of described impact block and extends along the axial direction of described impact block.
Furthermore, in the technical scheme of the impact switching construction of above-mentioned electric tool gear-box, described groove and described ball are complementary, and each described groove is symmetry mutually.
Furthermore, in the technical scheme of the impact switching construction of above-mentioned electric tool gear-box, described through hole and described ball are complementary, and each described through hole is symmetry mutually.
Furthermore, in the technical scheme of the impact switching construction of above-mentioned electric tool gear-box, described ball is set to steel ball.
Furthermore, in the technical scheme of the impact switching construction of above-mentioned electric tool gear-box, the outside of described switching ring offers cannelure.
The beneficial effects of the utility model are: the utility model is compared with the impact switching construction of existing electric tool gear-box, under the situation that does not increase gear-box length, be provided with and switch ring and ball, switch ring by moving axially, make ball be in different positions, realize the function conversion of impact and non-impact, simple in structure, switch smooth and easy.
Description of drawings
Fig. 1 is stereochemical structure exploded view of the present utility model.
Fig. 2 is the cutaway view of the utility model under impact conditions.
Fig. 3 is the cutaway view of the utility model under non-impact conditions.
The specific embodiment
In order to set forth thought of the present utility model and purpose, below in conjunction with the drawings and specific embodiments the utility model is further described.
As shown in Figure 1, there is shown a kind of impact switching construction of electric tool gear-box, be used for realizing the function conversion of impact and non-impact, this structure comprises a transmission axle bed 1, an impact block 2, all ring changes 3 and two balls 4, as preferably, ball 4 is set to steel ball.
Wherein, transmission axle bed 1 is fixedlyed connected with the power transmission shaft 5 of gear reduction, and the outside of transmission axle bed 1 offers two through holes 11, and through hole 11 is complementary with ball 4, and two through holes 11 are symmetrical mutually.Impact block 2 is installed in the cavity of transmission axle bed 1, and the outside of impact block 2 offers two grooves 21, and groove 21 is arranged at the exterior bottom of impact block 2 and extends along the axial direction of impact block 2, and groove 21 is complementary with ball 4, and two grooves 21 are symmetry mutually.In the electric tool gear-box, impact block 2 drives with power transmission shaft 5 and is connected, impact block 2 can be by being arranged at power transmission shaft 5 V-shaped groove and the drive of spin 6, follow power transmission shaft 5 and rotate, ball set 12, pad 10, spring 9, pad 8 and buffer gasket 7 are installed between impact block 2 and the transmission axle bed 1 successively.In addition, impact block 2 can be meshed with the passive impact block (not shown) on the working shaft, because the percussion action of electric tool gear-box is for existing known technology, so do not repeat them here.
As Fig. 1, Fig. 2 and shown in Figure 3, switching ring 3 can move axially and be sheathed on rotationally the outside of transmission axle bed 1, form and the contacted protuberance 31 in the outside of transmission axle bed 1 on the inwall of switching ring 3, switch the position of inwall except protuberance 31 and the outside generation gap F of transmission axle bed 1 of ring 3, the outside of switching ring 3 offers cannelure 32, cannelure 32 can be connected with thrust unit (not shown), is conducive to switch ring 3 and moves axially.Ball 4 is installed on corresponding through hole 11 and encircles between 3 at transmission axle bed 1 and switching.
Operation principle:
When impact conditions, ball 4 can break away from corresponding groove 21 automatically and enter among transmission axle bed 1 and the gap F that switches between the ring 3, thereby assurance impact block 2 can freely rotate and move axially working shaft is imposed intermittent impact; When non-impact conditions, switching ring 3 axially moves up, ball 4 is replaced mutually with protuberance 31 and antitorque the corresponding groove 21 that is connected in, ball 4 links together transmission axle bed 1 and impact block 2, impact block 2 can't rotate and move axially with respect to transmission axle bed 1, but can rotate with transmission axle bed 1.
In sum, compare with the impact switching construction of existing electric tool gear-box, the utility model is under the situation that does not increase gear-box length, switch ring 3 by moving axially, make ball 4 be in different positions, realize the function conversion of impact and non-impact, simple in structure, switch smooth and easy.
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 patent claim, 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, so the equivalence that all structures according to the utility model patent claim, feature and principle are done changes or modifies, and is included in the utility model patent claim.
Claims (6)
1. the impact switching construction of an electric tool gear-box is characterized in that, this structure comprises:
One transmission axle bed (1), the outside of described transmission axle bed (1) offers at least two through holes (11);
One impact block (2), described impact block (2) are installed in the cavity of described transmission axle bed (1), and its outside offers at least two grooves (21);
All ring changes (3), described switching ring (3) can move axially and be sheathed on rotationally the outside of described transmission axle bed (1), forms the contacted protuberance in the outside (31) with described transmission axle bed (1) on its inwall; And
At least two balls (4), described ball (4) be installed on corresponding described through hole (11) and be positioned at described transmission axle bed (1) and described switching ring (3) between, described ball (4) is replaced mutually with described protuberance (31) under non-impact conditions and antitorque is connected in corresponding described groove (21), and described ball (4) breaks away from corresponding described groove (21) and is in the gap between described transmission axle bed (1) and the described switching ring (3) under impact conditions.
2. the impact switching construction of electric tool gear-box according to claim 1 is characterized in that, described groove (21) is arranged at the exterior bottom of described impact block (2) and extends along the axial direction of described impact block (2).
3. the impact switching construction of electric tool gear-box according to claim 1 is characterized in that, described groove (21) is complementary with described ball (4), and each described groove (21) is symmetry mutually.
4. the impact switching construction of electric tool gear-box according to claim 1 is characterized in that, described through hole (11) is complementary with described ball (4), and each described through hole (11) is symmetry mutually.
5. the impact switching construction of electric tool gear-box according to claim 1 is characterized in that, described ball (4) is set to steel ball.
6. the impact switching construction of electric tool gear-box according to claim 1 is characterized in that, the outside of described switching ring (3) offers cannelure (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045866 CN203156714U (en) | 2013-01-24 | 2013-01-24 | Impacting switching structure of electric tool gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045866 CN203156714U (en) | 2013-01-24 | 2013-01-24 | Impacting switching structure of electric tool gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203156714U true CN203156714U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320045866 Expired - Fee Related CN203156714U (en) | 2013-01-24 | 2013-01-24 | Impacting switching structure of electric tool gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203156714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522263A (en) * | 2013-10-18 | 2014-01-22 | 东莞百事得电动工具有限公司 | Impact switching device of electric tool gearbox |
-
2013
- 2013-01-24 CN CN 201320045866 patent/CN203156714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522263A (en) * | 2013-10-18 | 2014-01-22 | 东莞百事得电动工具有限公司 | Impact switching device of electric tool gearbox |
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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: 20130828 Termination date: 20210124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |