CN210661282U - False triggering prevention device of electric tool spindle self-locking mechanism - Google Patents
False triggering prevention device of electric tool spindle self-locking mechanism Download PDFInfo
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- CN210661282U CN210661282U CN201921375728.7U CN201921375728U CN210661282U CN 210661282 U CN210661282 U CN 210661282U CN 201921375728 U CN201921375728 U CN 201921375728U CN 210661282 U CN210661282 U CN 210661282U
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- self
- locking
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- spindle
- locking mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 46
- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims abstract description 88
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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Abstract
The utility model discloses a false triggering prevention device of a self-locking mechanism of a main shaft of an electric tool, which comprises a blocking piece and an elastic element, wherein the blocking piece comprises a rotating part, a connecting part and a blocking part which are sequentially connected with each other; when the blocking piece is in a rotating state, the blocking part is used for covering the self-locking hole so as to prevent the self-locking pin from being inserted into the self-locking hole; when the blocking piece is in a static state, the blocking part does not cover the self-locking hole. By adopting the arrangement, the structure is simple, the number of parts is small, the occupied space is small, the false triggering of the self-locking mechanism of the main shaft of the electric tool can be prevented, a series of serious adverse consequences can be avoided, and the safety of equipment and personnel can be ensured.
Description
Technical Field
The utility model relates to an electric tool field, in particular to electric tool main shaft self-locking mechanism prevent false triggering device.
Background
The reduction gearbox of most power tools is provided with a self-locking pin which can move in the axial direction of the main shaft of the reduction gearbox and engage with a corresponding hole on the gear to prevent the gear from continuing to rotate. When the working head is disassembled and assembled, the switch of the self-locking pin is manually triggered, the self-locking pin is inserted into the corresponding hole in the gear, so that the gear and the spindle are in a stop state, and the self-locking pin and the corresponding hole in the gear are the spindle self-locking mechanism of the electric tool.
However, the anti-triggering device is not arranged on the self-locking mechanism of the main shaft of the electric tool, and when the electric tool is in the running process or the electric tool is turned off but the working head is not completely stopped rotating, the self-locking mechanism is accidentally triggered, so that a series of serious adverse results can be caused, for example, the large gear and the self-locking pin are damaged due to inertia force, the driving gear and the driven gear are broken, and the motor is blocked and rotates; even working heads such as grinding blades, saw blades and the like cause accidental injury accidents and the like due to inertial fragmentation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to set up in order to overcome among the prior art electric tool main shaft self-locking mechanism and prevent trigger device, under electric tool operation in-process or working head not stop the pivoted state completely yet, trigger to electric tool main shaft self-locking mechanism accident, can lead to the defect of a series of bad consequences, provide an electric tool main shaft self-locking mechanism's the device that prevents the spurious triggering.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a device for preventing false triggering of a self-locking mechanism of a main shaft of an electric tool is used for preventing the accidental triggering of the self-locking mechanism of the main shaft of the electric tool, the self-locking mechanism of the main shaft of the electric tool comprises a self-locking pin and a gear, the gear is used for being connected with the main shaft, the gear is provided with at least one self-locking hole, the self-locking pin is inserted into the self-locking hole to realize locking, or the self-locking pin is separated from the self-locking hole to realize unlocking, and the device is characterized in that the device for preventing false triggering of the self-locking mechanism of the main shaft of the electric tool comprises a blocking piece and an elastic element, the blocking piece comprises a rotating part, a connecting part and a blocking part which are sequentially connected with each other, one end of the elastic element is connected to the gear, the other end of the elastic element is connected, the self-locking surface is the surface where the self-locking hole is located on the gear; when the blocking piece is in a rotating state, the blocking part is used for covering the self-locking hole so as to prevent the self-locking pin from being inserted into the self-locking hole;
when the blocking piece is in a static state, the blocking part does not cover the self-locking hole.
In the scheme, the self-locking surface of the gear is a surface provided with a self-locking hole on the gear, the gear is connected with a rotatable blocking piece and an elastic element, when the gear is in a rotating state, the blocking part of the blocking piece rotates around the rotating part under centrifugal force to cover the self-locking hole on the gear, the self-locking pin is prevented from being inserted into the self-locking hole, and at the moment, the elastic element is in a compression state. When the gear stops and does not rotate, the blocking part rotates around the rotating part to the direction close to the main shaft under the restoring force of the elastic element, the self-locking hole is not covered by the blocking part, and the self-locking pin can be inserted into the self-locking hole to lock the main shaft. By adopting the arrangement, the structure is simple, the number of parts is small, the occupied space is small, the false triggering of the self-locking mechanism of the main shaft of the electric tool can be prevented, a series of serious adverse consequences can be avoided, and the safety of equipment and personnel can be ensured.
Preferably, the blocking part is provided with a first notch, when the blocking part is in a static state, the first notch is overlapped with the self-locking hole and exposes the self-locking hole, when the blocking part is in a rotating state, the first notch deviates from the self-locking hole, and the self-locking hole is covered by the blocking part.
In this scheme, set up first breach on the block portion, when the gear does not rotate, just expose first breach from the lockhole, first breach has the effect of stepping down for the locking of self-locking round pin to the main shaft is more accurate.
Preferably, a second notch is arranged on one side of the blocking piece close to the main shaft, and the second notch is matched with the outer surface of the main shaft and is used for abutting against the main shaft.
In this scheme, set up the second breach on blockking that is used for matcing with the main shaft, like this under quiescent condition, blockking that can just stop to lean on at second breach and main shaft, first breach just makes from the lockhole expose, consequently sets up the second breach and is convenient for the location.
Preferably, a groove is formed in the self-locking surface of the gear, and the blocking piece and the elastic element are both arranged in the groove.
In this scheme, set up blockking piece and elastic element in the recess, under the pivoted condition, the lateral wall of recess can restrict the stop part in order to prevent that the stop part from rotatory can't cover the self-locking hole. By adopting the arrangement, the structure is simple, and the blocking part can be limited.
Preferably, the rotating part is provided with a through hole, and the rotating part penetrates through the through hole through a pin shaft to be rotatably connected with the bottom surface of the groove.
In this scheme, through round pin axle with rotation portion and gear rotatable coupling to realize that the part that blocks can be rotatory round rotation portion, simple structure, spare part is few.
Preferably, a resilient groove is formed on one side of the connecting portion facing the elastic element, one end of the elastic element is connected to the gear, and the other end of the elastic element is connected to the groove bottom of the resilient groove.
In this scheme, set up the resilience groove on connecting portion, firstly be convenient for when the gear stops, elastic element exerts the resilience force to stopping the piece and makes stopping portion automatic re-setting, secondly the resilience groove can also play direction and positioning action to the spring for it is more accurate to stop the cover and expose of lockhole certainly to stop.
Preferably, the elastic element is a spring.
Preferably, the number of the blocking pieces corresponds to the number of the self-locking holes.
In the scheme, the number of the blocking pieces corresponds to the number of the self-locking holes, so that the accuracy of preventing false triggering is improved.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: the utility model discloses a mistake trigger prevention device of electric tool main shaft self-locking mechanism sets up mistake trigger prevention device of electric tool main shaft self-locking mechanism on electric tool's gear, and at electric tool operation in-process, the self-locking hole on the gear is shielded, prevents that electric tool main shaft self-locking mechanism from being triggered by accident. By adopting the arrangement, the structure is simple, the number of parts is small, the occupied space is small, the false triggering of the self-locking mechanism of the main shaft of the electric tool can be prevented, a series of serious adverse consequences can be avoided, and the safety of equipment and personnel can be ensured.
Drawings
Fig. 1 is a schematic top view of a self-locking mechanism of a spindle of an electric tool according to a preferred embodiment of the present invention, illustrating a structure of the device for preventing false triggering when the spindle is in a rotating state.
Fig. 2 is a schematic view of a cross-sectional structure of the anti-false triggering device of the self-locking mechanism of the spindle of the electric tool according to the preferred embodiment of the present invention along the axis direction of the spindle on the connection line of two self-locking holes of the spindle in a rotating state.
Fig. 3 is a schematic view of a cross-sectional structure of the mis-triggering prevention device of the self-locking mechanism of the spindle of the electric tool according to the preferred embodiment of the present invention along the axis direction of the spindle on the connection line of the two pins of the spindle in the rotation state.
Fig. 4 is a schematic cross-sectional view of the anti-false triggering device of the self-locking mechanism of the spindle of the electric tool according to the preferred embodiment of the present invention along the axis direction of the spindle on the connection line of the two self-locking holes when the spindle is in the stop state.
Fig. 5 is a schematic top view of the anti-false triggering device of the self-locking mechanism of the spindle of the electric tool according to the preferred embodiment of the present invention, when the spindle is in a stopped state.
Description of reference numerals:
Rotating part 101
Through hole 1011
Connecting part 102
Gear 40
Self-locking hole 402
Self-locking surface 403
Self-locking pin 50
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 5, the present invention provides a device for preventing false triggering of a self-locking mechanism of a spindle of an electric tool, for preventing accidental triggering of the self-locking mechanism of the spindle 30 of the electric tool, the self-locking mechanism of the spindle 30 of the electric tool comprises a self-locking pin 50 and a gear 40, the gear 40 is used for being connected with the spindle 30, the gear 40 is provided with at least one self-locking hole 402, the self-locking pin 50 is inserted into the self-locking hole 402 to achieve locking, or the self-locking pin 50 is separated from the self-locking hole 402 to achieve unlocking, the device for preventing false triggering of the spindle self-locking mechanism of the electric tool comprises a blocking member 10 and an elastic element, the blocking member 10 comprises a rotating part 101, a connecting part 102 and a blocking part 103 which are sequentially connected with each other, one end of the elastic element is connected with the gear 40, the, the self-locking surface 403 of the gear is a surface provided with a self-locking hole on the gear, so that the blocking member 10 has a rotating state and a static state; when the blocking member 10 is in the rotation state, the blocking portion 103 is used to cover the self-locking hole 402 to prevent the self-locking pin 50 from being inserted into the self-locking hole 402; when the blocking member 10 is in the rest state, the blocking portion 103 does not cover the self-locking hole 402.
The gear 40 is connected with the rotatable blocking member 10 and the elastic element, when the gear 40 is in a rotating state, the blocking portion 103 of the blocking member 10 rotates around the rotating portion 101 under the centrifugal force to cover the self-locking hole 402 on the gear 40, and the self-locking pin 50 is prevented from being inserted into the self-locking hole 402, and at this time, the elastic element is in a compressed state. When the gear 40 stops and does not rotate, the blocking portion 103 rotates around the rotating portion 101 toward the main shaft 30 under the restoring force of the elastic element, the self-locking hole 402 is not covered by the blocking portion 103, and the self-locking pin 50 can be inserted into the self-locking hole 402 to lock the main shaft 30. By adopting the arrangement, the structure is simple, the number of parts is small, the occupied space is small, the false triggering of the self-locking mechanism of the electric tool spindle 30 can be prevented, a series of serious adverse consequences can be avoided, and the safety of equipment and personnel can be ensured.
As shown in fig. 1 and 5, the blocking portion 103 is provided with a first notch 104, when the blocking member 10 is in a static state, the first notch 104 overlaps with the self-locking hole 402 and is exposed from the self-locking hole 402, and when the blocking member 10 is in a rotating state, the first notch 104 deviates from the self-locking hole 402, and the self-locking hole 402 is covered by the blocking portion 103. The first notch 104 is formed in the blocking portion 103, and when the gear 40 does not rotate, the self-locking hole 402 just exposes the first notch 104, and the first notch 104 has a yielding function, so that the self-locking pin 50 can be locked on the spindle 30 more accurately.
The shape and position of the first notch 104 are not limited, and may be a semicircular notch along the edge of the blocking member 10 on the side of the blocking portion 103 away from the main shaft 30, or may be a circular notch located at the middle position of the blocking portion 103, depending on the shape and size of the blocking member 10. Of course, in the present embodiment, the latter is employed.
As shown in fig. 1 and 5, a second notch 105 is disposed on a side of the blocking member 10 close to the main shaft 30, and the second notch 105 is adapted to an outer surface of the main shaft 30 and is used for abutting against the main shaft 30. The second notch 105 is disposed on the blocking member 10 for matching with the main shaft 30, so that in a static state, the blocking member 10 can just stop at the second notch 104 to abut against the main shaft 30, and the first notch 105 just exposes the self-locking hole 402, so that the second notch 105 is disposed for positioning.
As shown in fig. 2, 3 and 4, a groove 401 is provided on the self-locking surface 403 of the gear 40, and the blocking member 10 and the elastic element are both disposed in the groove 401. Wherein, the blocking member 10 and the elastic element are disposed in the groove 401, and in a rotating state, the side wall of the groove 401 can limit the blocking portion 103 to prevent the blocking portion 103 from rotating to cover the self-locking hole 402. With the arrangement, the structure is simple, and the blocking part 103 can be limited.
The rotating part 101 has a through hole 1011, and the rotating part 101 is rotatably connected to the bottom surface of the recess 401 through the through hole 1011 by the pin 60. Wherein, through round pin axle 60 with rotation portion 101 and gear 40 rotatable coupling to realize that stop part 103 can rotate around rotation portion 101, simple structure, spare part is few.
As shown in fig. 1 and 5, the connecting portion 102 is provided with a resilient groove 106 on a side facing the elastic member, one end of the elastic member is connected to the gear 40, and the other end of the elastic member is connected to a groove bottom of the resilient groove 106. The connecting portion 102 is provided with the resilient groove 106, so that when the gear 40 stops, the resilient element exerts resilient force on the blocking member 10 to enable the blocking portion 103 to automatically reset, and the resilient groove 106 can also play a guiding and positioning role on the spring 20, so that the blocking member 10 can cover and expose the self-locking hole 402 more accurately.
The resilient element is a spring 20. The number of the stoppers 10 corresponds to the number of the self-locking holes 402. The number of the blocking pieces 10 corresponds to the number of the self-locking holes 402, which is beneficial to improving the accuracy of preventing false triggering.
As shown in fig. 1 to 5, in the present embodiment, two self-locking holes 402 are provided on the gear 40 of the electric tool connected to the main shaft 30, the self-locking pin 50 is connected to the reduction gear box, the self-locking pin 50 is movable in the axial direction thereof and inserted into the self-locking hole 402 to restrict the rotation of the main shaft 30, the self-locking pin 50 is disengaged from the self-locking hole 402, and the main shaft 30 is unlocked. A groove 401 is formed on the self-locking surface 403 of the gear 40, in this embodiment, the blocking member 10 is a semicircular false triggering prevention pad, one end of the blocking member 10 is connected to the bottom surface of the groove 401 through a pin 60, and the blocking member 10 can rotate around the pin 60. The anti-false triggering gasket is provided with a rebound groove 106 at one side of the end connected with the gear 40 facing the side wall of the groove 401, and the shape of the rebound groove 106 is not limited. A spring 20 is connected to the bottom of the rebound groove, and the other end of the spring 20 is connected to the side wall of the groove 401. The other end of the blocking member 10 is provided with a first notch 104, a second notch 105 is formed in the middle of one side of the blocking member 10 close to the spindle 30, the second notch 105 can be just coupled with the spindle 30, the first notch 104 is used for yielding the self-locking hole 402, and the second notch 105 is used for positioning the blocking member 10.
As will be understood by continuing to refer to fig. 1 to 5, the operation principle of the false triggering prevention device of the electric tool spindle self-locking mechanism in the embodiment is as follows: when the main shaft 30 is in a rotating state, the gear 40 rotates along with the main shaft 30, at this time, the blocking portion 103 of the blocking member 10 rotates in a direction away from the main shaft 30 under centrifugal force, at this time, the first notch 104 deviates from the self-locking hole 402, the blocking portion 103 shields the self-locking hole 402, the spring 20 is in a compressed state, and even if a switch of the self-locking mechanism of the main shaft 30 is triggered by mistake, the self-locking pin 50 cannot be inserted into the self-locking hole 402. When the power tool is turned off and the spindle 30 completely stops rotating, the spring 20 applies a resilience force to the bottom of the resilient slot 106 under the resilience force of the spring 20, the blocking portion 103 of the blocking member 10 rotates in a direction approaching the spindle 30 under the resilience force, the second notch 105 is coupled to the spindle 30, the first notch 104 is exposed from the locking hole 402, and the self-locking pin 50 can be inserted into the self-locking hole 402 to lock the spindle 30 of the power tool.
It should be noted that all electric tools in which the axis of the self-locking pin in the main shaft self-locking mechanism and the axis of the main shaft are parallel to each other can use the utility model provides a device for preventing the false triggering of the main shaft self-locking mechanism of the electric tools to prevent the accidental triggering of the main shaft self-locking mechanism, for example, electric tools such as miter saws, angle grinders, polishing machines, etc. The utility model discloses an electric tool main shaft self-locking mechanism prevent the false triggering device, simple structure, spare part is few, does not occupy unnecessary space, can prevent that electric tool main shaft self-locking mechanism is unexpected to be triggered moreover, safe and reliable.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. The utility model provides a device for preventing false triggering of an electric tool spindle self-locking mechanism, which comprises a self-locking pin and a gear, the gear is used for being connected with the main shaft, at least one self-locking hole is formed in the gear, the self-locking pin is inserted into the self-locking hole to lock the main shaft, or the self-locking pin is separated from the self-locking hole to unlock the main shaft, it is characterized in that the false triggering prevention device of the electric tool spindle self-locking mechanism comprises a blocking piece and an elastic element, the blocking piece comprises a rotating part, a connecting part and a blocking part which are sequentially connected with each other, one end of the elastic element is connected with the gear, the other end of the elastic element is connected with the connecting part, and the rotating part is rotatably connected with the self-locking surface of the gear, so that the blocking piece has a rotating state and a static state;
when the blocking piece is in a rotating state, the blocking part is used for covering the self-locking hole so as to prevent the self-locking pin from being inserted into the self-locking hole;
when the blocking piece is in a static state, the blocking part does not cover the self-locking hole.
2. The device for preventing false triggering of a spindle self-locking mechanism of an electric tool according to claim 1, wherein the blocking portion is provided with a first notch, the first notch overlaps with the self-locking hole and exposes the self-locking hole when the blocking member is in a static state, and the first notch deviates from the self-locking hole when the blocking member is in a rotating state, and the self-locking hole is covered by the blocking portion.
3. The device for preventing false triggering of a self-locking mechanism of a spindle of an electric tool according to claim 1, wherein a second notch is provided on a side of the blocking member adjacent to the spindle, and the second notch is adapted to an outer surface of the spindle and is used for abutting against the spindle.
4. The mis-trigger prevention device of a self-locking mechanism of a spindle of an electric tool as claimed in claim 1, wherein the self-locking surface is provided with a groove, and the blocking member and the elastic element are both disposed in the groove.
5. The device for preventing false triggering of a self-locking mechanism of a spindle of an electric tool according to claim 4, wherein the rotating part is provided with a through hole, and the rotating part is rotatably connected with the bottom surface of the groove by a pin shaft penetrating through the through hole.
6. The mis-trigger prevention device of a self-locking mechanism of a spindle of a power tool as claimed in claim 1, wherein the connection part is provided with a resilient groove on a side thereof facing the elastic member, one end of the elastic member is connected to the gear, and the other end of the elastic member is connected to a groove bottom of the resilient groove.
7. The mis-trigger prevention device of a self-locking mechanism of a spindle of a power tool as claimed in claim 1, wherein the elastic member is a spring.
8. The mis-trigger prevention device of the self-locking mechanism of the spindle of the power tool as claimed in any one of claims 1 to 7, wherein the number of the blocking members corresponds to the number of the self-locking holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921375728.7U CN210661282U (en) | 2019-08-22 | 2019-08-22 | False triggering prevention device of electric tool spindle self-locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921375728.7U CN210661282U (en) | 2019-08-22 | 2019-08-22 | False triggering prevention device of electric tool spindle self-locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210661282U true CN210661282U (en) | 2020-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921375728.7U Withdrawn - After Issue CN210661282U (en) | 2019-08-22 | 2019-08-22 | False triggering prevention device of electric tool spindle self-locking mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN210661282U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594388A (en) * | 2019-08-22 | 2019-12-20 | 锐奇控股股份有限公司 | False triggering prevention device of electric tool spindle self-locking mechanism |
| CN110594388B (en) * | 2019-08-22 | 2024-05-10 | 锐奇控股股份有限公司 | Error triggering prevention device for main shaft self-locking mechanism of electric tool |
-
2019
- 2019-08-22 CN CN201921375728.7U patent/CN210661282U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594388A (en) * | 2019-08-22 | 2019-12-20 | 锐奇控股股份有限公司 | False triggering prevention device of electric tool spindle self-locking mechanism |
| CN110594388B (en) * | 2019-08-22 | 2024-05-10 | 锐奇控股股份有限公司 | Error triggering prevention device for main shaft self-locking mechanism of electric tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200602 Effective date of abandoning: 20240510 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200602 Effective date of abandoning: 20240510 |