CN211333059U - Gapless main shaft locking device - Google Patents
Gapless main shaft locking device Download PDFInfo
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- CN211333059U CN211333059U CN201921584384.0U CN201921584384U CN211333059U CN 211333059 U CN211333059 U CN 211333059U CN 201921584384 U CN201921584384 U CN 201921584384U CN 211333059 U CN211333059 U CN 211333059U
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- arc surface
- power output
- shaft
- output disc
- power take
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Abstract
The utility model discloses a zero clearance main shaft locking device, including the output shaft, the power take off dish, retaining ring and stop pin, the power take off dish is connected to drive arrangement, the surface of power take off dish sets up the protruding spacer column that makes progress, be provided with the packing block between two adjacent spacer columns, the stop pin sets up between spacer column and packing block, the retaining ring sets up in the power take off dish, and locate the spacer column, packing block and stop pin cover in the inner circle of retaining ring, power take off dish central authorities are provided with the through-hole, output shaft one end sets up to the multiaspect axle, the adjacent two sides of multiaspect axle are locking plane and arc surface respectively, the multiaspect axle passes the mesopore that spacer column, packing block and stop pin formed and the through-hole of power take off dish; the locking pin is in contact with the plane of the multi-plane shaft, and the spacing column and the filling block are in contact with the arc surface. The utility model discloses can effectively reduce the noise of scram, the locking reliability is high, and the whole structure assembly degree of difficulty is low.
Description
Technical Field
The utility model belongs to the technical field of electric tool technique and specifically relates to indicate a zero clearance main shaft locking device.
Background
The electric tool is driven by electricity, and comprises a plug-in type, a charging type or a charging and plug-in dual-purpose type, and the electric tool can clamp a drill bit to drill a hole or clamp a screw driver head to assemble and disassemble a screw. The rechargeable electric tool sometimes cannot drive a drill bit or a screwdriver to rotate due to insufficient electric power, but cannot be charged immediately for use; the plug-in drill bit is also used as a "hand drill" when it is unable to be used due to sudden power failure.
In the electric tool structure, the driving gear combined with the driving shaft of the motor is directly meshed with the gear set and then is driven by the power output disc combined with the main shaft in a meshed mode, so when the electric tool is used as a manual drill to apply force and rotate, in order to solve the problem that when the power output disc is transmitted to the driving gear combined with the driving shaft of the motor through the gear set to rotate and is turned into a driving gear instead, a drill bit or a screw driver head idles in place, a structure that a plurality of rollers are arranged on an inner ring of a fixing ring to contact the side face of the main shaft is also provided, and when the power output stops and the main shaft is driven, the main shaft drives the rollers to. However, due to factors such as the machining precision of the main shaft and the concentricity assembling error of the main shaft and the fixing ring, the structure can not ensure the average stress of all the rollers, the locking reliability is low, and the noise is generated by the collision between the main shaft and the rollers due to the inertia when the gearbox is in emergency stop.
The gapless spindle locking device of taiwan patent M383473 is to solve the above noise problem, and mainly includes an elastic retaining mechanism disposed in the inner ring of the fixing ring, an elastic portion capable of elastic deformation provided along the radial direction of the ball, and a damping force provided by the elastic deformation of the elastic portion to eliminate noise. However, such structures have the problems of complicated structure, high assembly requirements, reduced reliability of the structure when the elastic part is subjected to plastic deformation due to factors such as fatigue in use, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a gapless main shaft locking device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gapless spindle locking device comprises an output shaft, a power output disc, a stop ring and a locking pin, wherein the power output disc is connected to a driving device, spacing columns protruding upwards are arranged on the surface of the power output disc along the circumferential direction, a filling block is arranged between every two adjacent spacing columns, the locking pin is arranged between the spacing columns and the filling block, the stop ring is arranged on the power output disc, the spacing columns, the filling blocks and the locking pin are sleeved in an inner ring of the stop ring, a through hole is formed in the center of the power output disc, one end of the output shaft is provided with a multi-surface shaft, two adjacent surfaces of the multi-surface shaft are respectively a locking plane and an arc surface, and the multi-surface shaft penetrates through a middle hole formed by the spacing columns, the filling blocks and the locking pin and the through hole of the power output disc; the locking pin is in contact with the locking plane of the multi-faced shaft, and the spacing column and the filling block are in contact with the arc surface.
The filling block is provided with an inner arc surface and an outer arc surface, the inner arc surface is attached to the arc surface, and the outer arc surface is attached to the inner ring surface of the stop ring.
And a connecting column is arranged on the surface of the power output disc connected with the driving device.
The connecting column and the power output disc are of an integral structure.
The power output disc is provided with a first inserting hole, and the connecting column is inserted into the first inserting hole and fixed in the first inserting hole.
The power output disc is provided with a second plug hole, the spacing columns are arranged to be cylinders, and the spacing columns are inserted into the second plug hole and fixed in the second plug hole.
The spacing column and the power output disc are of an integrated structure, the spacing column is provided with an inner arc surface and an outer arc surface, the inner arc surface is attached to the arc surface, and the outer arc surface is attached to the inner ring surface of the stop ring.
Compared with the prior art, the utility model discloses beneficial effect:
when the power output disc is driven, the power output disc drives the output shaft to rotate to output torque, and meanwhile, the spacing columns of the power output disc push the locking pins and the filling blocks to rotate together; when the gearbox stops suddenly, the filling block pushes the locking pin out of the center of the locking plane of the output shaft, and the gap between the locking pin and the multi-surface shaft and the stop ring is small, so that the output shaft can stop rotating in a short time, the sudden stop noise can be effectively reduced, the locking reliability is high, and the whole structure is low in assembly difficulty.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is an exploded schematic view of embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a power output disc of example 1 of the present invention;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 5 is an exploded schematic view of embodiment 2 of the present invention;
fig. 6 is a schematic structural view of a power output disc according to example 2 of the present invention;
fig. 7 is a schematic structural view of the output shaft of the present invention;
fig. 8 is a schematic structural view of the filling block of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3 and 7 to 8, a gapless spindle locking device includes an output shaft 1, a power output disc 2, a stop ring 3 and a locking pin 4, the power output disc 2 is connected to a driving device, the surface of the power output disc 2 is provided with spacing columns 5 protruding upwards along the circumferential direction, a filling block 6 is arranged between two adjacent spacing columns 5, the locking pin 4 is arranged between the spacing columns 5 and the filling block 6, the stop ring 3 is arranged on the power output disc 2, the spacing column 5, the filling block 6 and the locking pin 4 are sleeved in the inner ring of the stop ring 3, a through hole 21 is formed in the center of the power output disc 2, one end of the output shaft 1 is provided with a multi-surface shaft 11, two adjacent surfaces of the multi-surface shaft 11 are a locking plane 111 and an arc surface 112 respectively, and the multi-surface shaft 11 penetrates through a middle hole formed by the spacing column 5, the filling block 6 and the locking pin 4 and the through hole 21 of the power output disc 2; the locking pin 4 is in contact with the locking flat surface 111 of the multi-faced shaft 11, and the spacer 5 and the packing block 6 are in contact with the arc surface 112.
The filling block 6 is provided with an inner arc surface 61 and an outer arc surface 62, wherein the inner arc surface 61 is attached to the arc surface 112, and the outer arc surface 62 is attached to the inner ring surface of the stop ring 3.
The surface of the power take-off disc 2 connected to the drive device is provided with a connection post 7, and in this embodiment, the power take-off disc 2 is provided with a first insertion hole 22, and the connection post 7 is inserted into the first insertion hole 22 and fixed to the first insertion hole 22.
In the present embodiment, the pto disk 2 is provided with the second insertion hole 23, the spacer 5 is provided as a cylindrical body, and the spacer 5 is inserted into the second insertion hole 23 and fixed to the second insertion hole 23.
Example 2
As shown in fig. 4 to 8, a gapless spindle locking device comprises an output shaft 1, a power output disc 2, a stop ring 3 and a locking pin 4, wherein the power output disc 2 is connected to a driving device, spacers 5 protruding upwards are arranged on the surface of the power output disc 2 along the circumferential direction, a filling block 6 is arranged between every two adjacent spacers 5, the locking pin 4 is arranged between the spacers 5 and the filling block 6, the stop ring 3 is arranged on the power output disc 2, the spacers 5, the filling block 6 and the locking pin 4 are sleeved in an inner ring of the stop ring 3, a through hole 21 is arranged in the center of the power output disc 2, one end of the output shaft 1 is provided with a multi-surface shaft 11, two adjacent surfaces of the multi-surface shaft 11 are a locking plane 111 and an arc surface 112 respectively, and the multi-surface shaft 11 penetrates through a middle hole formed by the spacers 5, the filling block 6 and the locking pin 4; the locking pin 4 is in contact with the locking flat surface 111 of the multi-faced shaft 11, and the spacer 5 and the packing block 6 are in contact with the arc surface 112.
The filling block 6 is provided with an inner arc surface 61 and an outer arc surface 62, wherein the inner arc surface 61 is attached to the arc surface 112, and the outer arc surface 62 is attached to the inner ring surface of the stop ring 3.
The surface of the power output disc 2 connected with the driving device is provided with a connecting column 7, and in the embodiment, the connecting column 7 and the power output disc 2 are of an integral structure.
In this embodiment, the spacer 5 and the pto drive disk 2 are of an integral structure, and the spacer 5 is provided with an inner arc surface 51 and an outer arc surface 52, the inner arc surface 51 is attached to the arc surface 112, and the outer arc surface 52 is attached to the inner ring surface of the stopper ring 3.
The principle of quick locking: when the gearbox is stopped suddenly, the filling block 6 pushes the locking pin 4 to the outside of the center of the locking plane 111 of the output shaft 4, and the clearance between the locking pin 4 and the multi-surface shaft 11 and the stop ring 3 is small, so that the output shaft 1 can stop rotating in a very short time.
The above detailed description is directed to specific illustrations of possible embodiments of the present invention, which are not intended to limit the scope of the invention, but rather are intended to be covered by the scope of the invention in any equivalent implementation or modification that does not depart from the spirit of the invention.
Claims (7)
1. A gapless spindle lock comprising an output shaft, a power take-off disk, a stop ring and a locking pin, wherein the power take-off disk is connected to a driving device, and a spacer column protruding upwards is arranged on the surface of the power take-off disk along the circumferential direction, characterized in that: a filling block is arranged between every two adjacent spacers, the locking pin is arranged between the spacers and the filling block, the stop ring is arranged on the power output disc, the spacers, the filling block and the locking pin are sleeved in an inner ring of the stop ring, a through hole is formed in the center of the power output disc, one end of the output shaft is provided with a multi-surface shaft, two adjacent surfaces of the multi-surface shaft are respectively a locking plane and an arc surface, and the multi-surface shaft penetrates through a middle hole formed by the spacers, the filling block and the locking pin and the through hole of the power output disc; the locking pin is in contact with the locking plane of the multi-faced shaft, and the spacing column and the filling block are in contact with the arc surface.
2. The slackless spindle lock assembly of claim 1, further comprising: the filling block is provided with an inner arc surface and an outer arc surface, the inner arc surface is attached to the arc surface, and the outer arc surface is attached to the inner ring surface of the stop ring.
3. The slackless spindle lock assembly of claim 1, further comprising: and a connecting column is arranged on the surface of the power output disc connected with the driving device.
4. The slackless spindle lock assembly of claim 3, further comprising: the connecting column and the power output disc are of an integral structure.
5. The slackless spindle lock assembly of claim 3, further comprising: the power output disc is provided with a first inserting hole, and the connecting column is inserted into the first inserting hole and fixed in the first inserting hole.
6. The slackless spindle lock assembly of claim 1, further comprising: the power output disc is provided with a second plug hole, the spacing columns are arranged to be cylinders, and the spacing columns are inserted into the second plug hole and fixed in the second plug hole.
7. The slackless spindle lock assembly of claim 1, further comprising: the spacing column and the power output disc are of an integrated structure, the spacing column is provided with an inner arc surface and an outer arc surface, the inner arc surface is attached to the arc surface, and the outer arc surface is attached to the inner ring surface of the stop ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584384.0U CN211333059U (en) | 2019-09-23 | 2019-09-23 | Gapless main shaft locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584384.0U CN211333059U (en) | 2019-09-23 | 2019-09-23 | Gapless main shaft locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211333059U true CN211333059U (en) | 2020-08-25 |
Family
ID=72094697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921584384.0U Active CN211333059U (en) | 2019-09-23 | 2019-09-23 | Gapless main shaft locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211333059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3970917A1 (en) * | 2020-03-02 | 2022-03-23 | Best select Industrial (SuZhou) Co., Ltd | Gapless spindle locking device of improved structure |
-
2019
- 2019-09-23 CN CN201921584384.0U patent/CN211333059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3970917A1 (en) * | 2020-03-02 | 2022-03-23 | Best select Industrial (SuZhou) Co., Ltd | Gapless spindle locking device of improved structure |
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